Merge branch 'develop' into feature/fix_small_issues

CHANGES.md

@@ -8,6 +8,7 @@ Improvements 🙌:
  - Cleaning chunks with lots of events as long as a threshold has been exceeded (35_000 events in DB) (#1634)
  - Creating and listening to EventInsertEntity. (#1634)
  - Handling (almost) properly the groups fetching (#1634)
+ - Improve fullscreen media display (#327)
 
 Bugfix 🐛:
  - Integration Manager: Wrong URL to review terms if URL in config contains path (#1606)
@@ -15,6 +16,8 @@ Bugfix 🐛:
  - Bug / Unwanted draft (#698)
  - All users seems to be able to see the enable encryption option in room settings (#1341)
  - Leave room only leaves the current version (#1656)
+ - Regression |  Share action menu do not work (#1647)
+ - verification issues on transition (#1555)
 
 Translations 🗣:
  -
@@ -27,7 +30,7 @@ Build 🧱:
  - Revert to build-tools 3.5.3
 
 Other changes:
- -
+ - Use `Context#withStyledAttributes` extension function (#1546)
 
 Changes in Riot.imX 0.91.4 (2020-07-06)
 ===================================================

attachment-viewer/.gitignore

@@ -0,0 +1 @@
+/build

attachment-viewer/build.gradle

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
+buildscript {
+    repositories {
+        maven {
+            url 'https://jitpack.io'
+            content {
+                // PhotoView
+                includeGroupByRegex 'com\\.github\\.chrisbanes'
+            }
+        }
+        jcenter()
+    }
+
+}
+
+android {
+    compileSdkVersion 29
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+dependencies {
+    implementation 'com.github.chrisbanes:PhotoView:2.0.0'
+
+    implementation 'io.reactivex.rxjava2:rxkotlin:2.3.0'
+    implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
+
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'androidx.core:core-ktx:1.3.0'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'com.google.android.material:material:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.1.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.1.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+
+}

attachment-viewer/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

attachment-viewer/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest package="im.vector.riotx.attachmentviewer" />

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AnimatedImageViewHolder.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.view.View
+import android.widget.ImageView
+import android.widget.ProgressBar
+
+class AnimatedImageViewHolder constructor(itemView: View) :
+        BaseViewHolder(itemView) {
+
+    val touchImageView: ImageView = itemView.findViewById(R.id.imageView)
+    val imageLoaderProgress: ProgressBar = itemView.findViewById(R.id.imageLoaderProgress)
+
+    internal val target = DefaultImageLoaderTarget(this, this.touchImageView)
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AttachmentEvents.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+sealed class AttachmentEvents {
+    data class VideoEvent(val isPlaying: Boolean, val progress: Int, val duration: Int) : AttachmentEvents()
+}
+
+interface AttachmentEventListener {
+    fun onEvent(event: AttachmentEvents)
+}
+
+sealed class AttachmentCommands {
+    object PauseVideo : AttachmentCommands()
+    object StartVideo : AttachmentCommands()
+    data class SeekTo(val percentProgress: Int) : AttachmentCommands()
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AttachmentSourceProvider.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.content.Context
+import android.view.View
+
+sealed class AttachmentInfo(open val uid: String) {
+    data class Image(override val uid: String, val url: String, val data: Any?) : AttachmentInfo(uid)
+    data class AnimatedImage(override val uid: String, val url: String, val data: Any?) : AttachmentInfo(uid)
+    data class Video(override val uid: String, val url: String, val data: Any, val thumbnail: Image?) : AttachmentInfo(uid)
+//    data class Audio(override val uid: String, val url: String, val data: Any) : AttachmentInfo(uid)
+//    data class File(override val uid: String, val url: String, val data: Any) : AttachmentInfo(uid)
+}
+
+interface AttachmentSourceProvider {
+
+    fun getItemCount(): Int
+
+    fun getAttachmentInfoAt(position: Int): AttachmentInfo
+
+    fun loadImage(target: ImageLoaderTarget, info: AttachmentInfo.Image)
+
+    fun loadImage(target: ImageLoaderTarget, info: AttachmentInfo.AnimatedImage)
+
+    fun loadVideo(target: VideoLoaderTarget, info: AttachmentInfo.Video)
+
+    fun overlayViewAtPosition(context: Context, position: Int): View?
+
+    fun clear(id: String)
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AttachmentViewerActivity.kt

@@ -0,0 +1,335 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ * Copyright (C) 2018 stfalcon.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.graphics.Color
+import android.os.Bundle
+import android.view.GestureDetector
+import android.view.MotionEvent
+import android.view.ScaleGestureDetector
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import android.widget.ImageView
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.GestureDetectorCompat
+import androidx.core.view.ViewCompat
+import androidx.core.view.isVisible
+import androidx.core.view.updatePadding
+import androidx.transition.TransitionManager
+import androidx.viewpager2.widget.ViewPager2
+import kotlinx.android.synthetic.main.activity_attachment_viewer.*
+import java.lang.ref.WeakReference
+import kotlin.math.abs
+
+abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventListener {
+
+    lateinit var pager2: ViewPager2
+    lateinit var imageTransitionView: ImageView
+    lateinit var transitionImageContainer: ViewGroup
+
+    var topInset = 0
+    var bottomInset = 0
+    var systemUiVisibility = true
+
+    private var overlayView: View? = null
+        set(value) {
+            if (value == overlayView) return
+            overlayView?.let { rootContainer.removeView(it) }
+            rootContainer.addView(value)
+            value?.updatePadding(top = topInset, bottom = bottomInset)
+            field = value
+        }
+
+    private lateinit var swipeDismissHandler: SwipeToDismissHandler
+    private lateinit var directionDetector: SwipeDirectionDetector
+    private lateinit var scaleDetector: ScaleGestureDetector
+    private lateinit var gestureDetector: GestureDetectorCompat
+
+    var currentPosition = 0
+
+    private var swipeDirection: SwipeDirection? = null
+
+    private fun isScaled() = attachmentsAdapter.isScaled(currentPosition)
+
+    private var wasScaled: Boolean = false
+    private var isSwipeToDismissAllowed: Boolean = true
+    private lateinit var attachmentsAdapter: AttachmentsAdapter
+    private var isOverlayWasClicked = false
+
+//    private val shouldDismissToBottom: Boolean
+//        get() = e == null
+//                || !externalTransitionImageView.isRectVisible
+//                || !isAtStartPosition
+
+    private var isImagePagerIdle = true
+
+    fun setSourceProvider(sourceProvider: AttachmentSourceProvider) {
+        attachmentsAdapter.attachmentSourceProvider = sourceProvider
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // This is important for the dispatchTouchEvent, if not we must correct
+        // the touch coordinates
+        window.decorView.systemUiVisibility = (
+                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                        or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                        or View.SYSTEM_UI_FLAG_IMMERSIVE)
+        window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
+        window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION, WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION)
+
+        setContentView(R.layout.activity_attachment_viewer)
+        attachmentPager.orientation = ViewPager2.ORIENTATION_HORIZONTAL
+        attachmentsAdapter = AttachmentsAdapter()
+        attachmentPager.adapter = attachmentsAdapter
+        imageTransitionView = transitionImageView
+        transitionImageContainer = findViewById(R.id.transitionImageContainer)
+        pager2 = attachmentPager
+        directionDetector = createSwipeDirectionDetector()
+        gestureDetector = createGestureDetector()
+
+        attachmentPager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
+            override fun onPageScrollStateChanged(state: Int) {
+                isImagePagerIdle = state == ViewPager2.SCROLL_STATE_IDLE
+            }
+
+            override fun onPageSelected(position: Int) {
+                onSelectedPositionChanged(position)
+            }
+        })
+
+        swipeDismissHandler = createSwipeToDismissHandler()
+        rootContainer.setOnTouchListener(swipeDismissHandler)
+        rootContainer.viewTreeObserver.addOnGlobalLayoutListener { swipeDismissHandler.translationLimit = dismissContainer.height / 4 }
+
+        scaleDetector = createScaleGestureDetector()
+
+        ViewCompat.setOnApplyWindowInsetsListener(rootContainer) { _, insets ->
+            overlayView?.updatePadding(top = insets.systemWindowInsetTop, bottom = insets.systemWindowInsetBottom)
+            topInset = insets.systemWindowInsetTop
+            bottomInset = insets.systemWindowInsetBottom
+            insets
+        }
+    }
+
+    fun onSelectedPositionChanged(position: Int) {
+        attachmentsAdapter.recyclerView?.findViewHolderForAdapterPosition(currentPosition)?.let {
+            (it as? BaseViewHolder)?.onSelected(false)
+        }
+        attachmentsAdapter.recyclerView?.findViewHolderForAdapterPosition(position)?.let {
+            (it as? BaseViewHolder)?.onSelected(true)
+            if (it is VideoViewHolder) {
+                it.eventListener = WeakReference(this)
+            }
+        }
+        currentPosition = position
+        overlayView = attachmentsAdapter.attachmentSourceProvider?.overlayViewAtPosition(this@AttachmentViewerActivity, position)
+    }
+
+    override fun onPause() {
+        attachmentsAdapter.onPause(currentPosition)
+        super.onPause()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        attachmentsAdapter.onResume(currentPosition)
+    }
+
+    override fun dispatchTouchEvent(ev: MotionEvent): Boolean {
+        // The zoomable view is configured to disallow interception when image is zoomed
+
+        // Check if the overlay is visible, and wants to handle the click
+        if (overlayView?.isVisible == true && overlayView?.dispatchTouchEvent(ev) == true) {
+            return true
+        }
+
+        // Log.v("ATTACHEMENTS", "================\ndispatchTouchEvent $ev")
+        handleUpDownEvent(ev)
+
+        // Log.v("ATTACHEMENTS", "scaleDetector is in progress ${scaleDetector.isInProgress}")
+        // Log.v("ATTACHEMENTS", "pointerCount ${ev.pointerCount}")
+        // Log.v("ATTACHEMENTS", "wasScaled $wasScaled")
+        if (swipeDirection == null && (scaleDetector.isInProgress || ev.pointerCount > 1 || wasScaled)) {
+            wasScaled = true
+//            Log.v("ATTACHEMENTS", "dispatch to pager")
+            return attachmentPager.dispatchTouchEvent(ev)
+        }
+
+        // Log.v("ATTACHEMENTS", "is current item scaled ${isScaled()}")
+        return (if (isScaled()) super.dispatchTouchEvent(ev) else handleTouchIfNotScaled(ev)).also {
+//            Log.v("ATTACHEMENTS", "\n================")
+        }
+    }
+
+    private fun handleUpDownEvent(event: MotionEvent) {
+        // Log.v("ATTACHEMENTS", "handleUpDownEvent $event")
+        if (event.action == MotionEvent.ACTION_UP) {
+            handleEventActionUp(event)
+        }
+
+        if (event.action == MotionEvent.ACTION_DOWN) {
+            handleEventActionDown(event)
+        }
+
+        scaleDetector.onTouchEvent(event)
+        gestureDetector.onTouchEvent(event)
+    }
+
+    private fun handleEventActionDown(event: MotionEvent) {
+        swipeDirection = null
+        wasScaled = false
+        attachmentPager.dispatchTouchEvent(event)
+
+        swipeDismissHandler.onTouch(rootContainer, event)
+        isOverlayWasClicked = dispatchOverlayTouch(event)
+    }
+
+    private fun handleEventActionUp(event: MotionEvent) {
+//        wasDoubleTapped = false
+        swipeDismissHandler.onTouch(rootContainer, event)
+        attachmentPager.dispatchTouchEvent(event)
+        isOverlayWasClicked = dispatchOverlayTouch(event)
+    }
+
+    private fun handleSingleTap(event: MotionEvent, isOverlayWasClicked: Boolean) {
+        // TODO if there is no overlay, we should at least toggle system bars?
+        if (overlayView != null && !isOverlayWasClicked) {
+            toggleOverlayViewVisibility()
+            super.dispatchTouchEvent(event)
+        }
+    }
+
+    private fun toggleOverlayViewVisibility() {
+        if (systemUiVisibility) {
+            // we hide
+            TransitionManager.beginDelayedTransition(rootContainer)
+            hideSystemUI()
+            overlayView?.isVisible = false
+        } else {
+            // we show
+            TransitionManager.beginDelayedTransition(rootContainer)
+            showSystemUI()
+            overlayView?.isVisible = true
+        }
+    }
+
+    private fun handleTouchIfNotScaled(event: MotionEvent): Boolean {
+//        Log.v("ATTACHEMENTS", "handleTouchIfNotScaled $event")
+        directionDetector.handleTouchEvent(event)
+
+        return when (swipeDirection) {
+            SwipeDirection.Up, SwipeDirection.Down    -> {
+                if (isSwipeToDismissAllowed && !wasScaled && isImagePagerIdle) {
+                    swipeDismissHandler.onTouch(rootContainer, event)
+                } else true
+            }
+            SwipeDirection.Left, SwipeDirection.Right -> {
+                attachmentPager.dispatchTouchEvent(event)
+            }
+            else                                      -> true
+        }
+    }
+
+    private fun handleSwipeViewMove(translationY: Float, translationLimit: Int) {
+        val alpha = calculateTranslationAlpha(translationY, translationLimit)
+        backgroundView.alpha = alpha
+        dismissContainer.alpha = alpha
+        overlayView?.alpha = alpha
+    }
+
+    private fun dispatchOverlayTouch(event: MotionEvent): Boolean =
+            overlayView
+                    ?.let { it.isVisible && it.dispatchTouchEvent(event) }
+                    ?: false
+
+    private fun calculateTranslationAlpha(translationY: Float, translationLimit: Int): Float =
+            1.0f - 1.0f / translationLimit.toFloat() / 4f * abs(translationY)
+
+    private fun createSwipeToDismissHandler()
+            : SwipeToDismissHandler = SwipeToDismissHandler(
+            swipeView = dismissContainer,
+            shouldAnimateDismiss = { shouldAnimateDismiss() },
+            onDismiss = { animateClose() },
+            onSwipeViewMove = ::handleSwipeViewMove)
+
+    private fun createSwipeDirectionDetector() =
+            SwipeDirectionDetector(this) { swipeDirection = it }
+
+    private fun createScaleGestureDetector() =
+            ScaleGestureDetector(this, ScaleGestureDetector.SimpleOnScaleGestureListener())
+
+    private fun createGestureDetector() =
+            GestureDetectorCompat(this, object : GestureDetector.SimpleOnGestureListener() {
+                override fun onSingleTapConfirmed(e: MotionEvent): Boolean {
+                    if (isImagePagerIdle) {
+                        handleSingleTap(e, isOverlayWasClicked)
+                    }
+                    return false
+                }
+
+                override fun onDoubleTap(e: MotionEvent?): Boolean {
+                    return super.onDoubleTap(e)
+                }
+            })
+
+    override fun onEvent(event: AttachmentEvents) {
+        if (overlayView is AttachmentEventListener) {
+            (overlayView as? AttachmentEventListener)?.onEvent(event)
+        }
+    }
+
+    protected open fun shouldAnimateDismiss(): Boolean = true
+
+    protected open fun animateClose() {
+        window.statusBarColor = Color.TRANSPARENT
+        finish()
+    }
+
+    fun handle(commands: AttachmentCommands) {
+        (attachmentsAdapter.recyclerView?.findViewHolderForAdapterPosition(currentPosition) as? BaseViewHolder)
+                ?.handleCommand(commands)
+    }
+
+    private fun hideSystemUI() {
+        systemUiVisibility = false
+        // Enables regular immersive mode.
+        // For "lean back" mode, remove SYSTEM_UI_FLAG_IMMERSIVE.
+        // Or for "sticky immersive," replace it with SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+        window.decorView.systemUiVisibility = (View.SYSTEM_UI_FLAG_IMMERSIVE
+                // Set the content to appear under the system bars so that the
+                // content doesn't resize when the system bars hide and show.
+                or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                // Hide the nav bar and status bar
+                or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+                or View.SYSTEM_UI_FLAG_FULLSCREEN)
+    }
+
+    // Shows the system bars by removing all the flags
+// except for the ones that make the content appear under the system bars.
+    private fun showSystemUI() {
+        systemUiVisibility = true
+        window.decorView.systemUiVisibility = (View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN)
+    }
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AttachmentsAdapter.kt

@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+
+class AttachmentsAdapter : RecyclerView.Adapter<BaseViewHolder>() {
+
+    var attachmentSourceProvider: AttachmentSourceProvider? = null
+        set(value) {
+            field = value
+            notifyDataSetChanged()
+        }
+
+    var recyclerView: RecyclerView? = null
+
+    override fun onAttachedToRecyclerView(recyclerView: RecyclerView) {
+        this.recyclerView = recyclerView
+    }
+
+    override fun onDetachedFromRecyclerView(recyclerView: RecyclerView) {
+        this.recyclerView = null
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val itemView = inflater.inflate(viewType, parent, false)
+        return when (viewType) {
+            R.layout.item_image_attachment          -> ZoomableImageViewHolder(itemView)
+            R.layout.item_animated_image_attachment -> AnimatedImageViewHolder(itemView)
+            R.layout.item_video_attachment          -> VideoViewHolder(itemView)
+            else                                    -> UnsupportedViewHolder(itemView)
+        }
+    }
+
+    override fun getItemViewType(position: Int): Int {
+        val info = attachmentSourceProvider!!.getAttachmentInfoAt(position)
+        return when (info) {
+            is AttachmentInfo.Image         -> R.layout.item_image_attachment
+            is AttachmentInfo.Video         -> R.layout.item_video_attachment
+            is AttachmentInfo.AnimatedImage -> R.layout.item_animated_image_attachment
+//            is AttachmentInfo.Audio         -> TODO()
+//            is AttachmentInfo.File          -> TODO()
+        }
+    }
+
+    override fun getItemCount(): Int {
+        return attachmentSourceProvider?.getItemCount() ?: 0
+    }
+
+    override fun onBindViewHolder(holder: BaseViewHolder, position: Int) {
+        attachmentSourceProvider?.getAttachmentInfoAt(position)?.let {
+            holder.bind(it)
+            when (it) {
+                is AttachmentInfo.Image         -> {
+                    attachmentSourceProvider?.loadImage((holder as ZoomableImageViewHolder).target, it)
+                }
+                is AttachmentInfo.AnimatedImage -> {
+                    attachmentSourceProvider?.loadImage((holder as AnimatedImageViewHolder).target, it)
+                }
+                is AttachmentInfo.Video         -> {
+                    attachmentSourceProvider?.loadVideo((holder as VideoViewHolder).target, it)
+                }
+//                else                            -> {
+// //                }
+            }
+        }
+    }
+
+    override fun onViewAttachedToWindow(holder: BaseViewHolder) {
+        holder.onAttached()
+    }
+
+    override fun onViewRecycled(holder: BaseViewHolder) {
+        holder.onRecycled()
+    }
+
+    override fun onViewDetachedFromWindow(holder: BaseViewHolder) {
+        holder.onDetached()
+    }
+
+    fun isScaled(position: Int): Boolean {
+        val holder = recyclerView?.findViewHolderForAdapterPosition(position)
+        if (holder is ZoomableImageViewHolder) {
+            return holder.touchImageView.attacher.scale > 1f
+        }
+        return false
+    }
+
+    fun onPause(position: Int) {
+        val holder = recyclerView?.findViewHolderForAdapterPosition(position) as? BaseViewHolder
+        holder?.entersBackground()
+    }
+
+    fun onResume(position: Int) {
+        val holder = recyclerView?.findViewHolderForAdapterPosition(position) as? BaseViewHolder
+        holder?.entersForeground()
+    }
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/BaseViewHolder.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+
+abstract class BaseViewHolder constructor(itemView: View) :
+        RecyclerView.ViewHolder(itemView) {
+
+    open fun onRecycled() {
+        boundResourceUid = null
+    }
+
+    open fun onAttached() {}
+    open fun onDetached() {}
+    open fun entersBackground() {}
+    open fun entersForeground() {}
+    open fun onSelected(selected: Boolean) {}
+
+    open fun handleCommand(commands: AttachmentCommands) {}
+
+    var boundResourceUid: String? = null
+
+    open fun bind(attachmentInfo: AttachmentInfo) {
+        boundResourceUid = attachmentInfo.uid
+    }
+}
+
+class UnsupportedViewHolder constructor(itemView: View) :
+        BaseViewHolder(itemView)

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/ImageLoaderTarget.kt

@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.graphics.drawable.Animatable
+import android.graphics.drawable.Drawable
+import android.widget.ImageView
+import android.widget.LinearLayout
+import androidx.core.view.isVisible
+import androidx.core.view.updateLayoutParams
+
+interface ImageLoaderTarget {
+
+    fun contextView(): ImageView
+
+    fun onResourceLoading(uid: String, placeholder: Drawable?)
+
+    fun onLoadFailed(uid: String, errorDrawable: Drawable?)
+
+    fun onResourceCleared(uid: String, placeholder: Drawable?)
+
+    fun onResourceReady(uid: String, resource: Drawable)
+}
+
+internal class DefaultImageLoaderTarget(val holder: AnimatedImageViewHolder, private val contextView: ImageView)
+    : ImageLoaderTarget {
+    override fun contextView(): ImageView {
+        return contextView
+    }
+
+    override fun onResourceLoading(uid: String, placeholder: Drawable?) {
+        if (holder.boundResourceUid != uid) return
+        holder.imageLoaderProgress.isVisible = true
+    }
+
+    override fun onLoadFailed(uid: String, errorDrawable: Drawable?) {
+        if (holder.boundResourceUid != uid) return
+        holder.imageLoaderProgress.isVisible = false
+    }
+
+    override fun onResourceCleared(uid: String, placeholder: Drawable?) {
+        if (holder.boundResourceUid != uid) return
+        holder.touchImageView.setImageDrawable(placeholder)
+    }
+
+    override fun onResourceReady(uid: String, resource: Drawable) {
+        if (holder.boundResourceUid != uid) return
+        holder.imageLoaderProgress.isVisible = false
+        // Glide mess up the view size :/
+        holder.touchImageView.updateLayoutParams {
+            width = LinearLayout.LayoutParams.MATCH_PARENT
+            height = LinearLayout.LayoutParams.MATCH_PARENT
+        }
+        holder.touchImageView.setImageDrawable(resource)
+        if (resource is Animatable) {
+            resource.start()
+        }
+    }
+
+    internal class ZoomableImageTarget(val holder: ZoomableImageViewHolder, private val contextView: ImageView) : ImageLoaderTarget {
+        override fun contextView() = contextView
+
+        override fun onResourceLoading(uid: String, placeholder: Drawable?) {
+            if (holder.boundResourceUid != uid) return
+            holder.imageLoaderProgress.isVisible = true
+        }
+
+        override fun onLoadFailed(uid: String, errorDrawable: Drawable?) {
+            if (holder.boundResourceUid != uid) return
+            holder.imageLoaderProgress.isVisible = false
+        }
+
+        override fun onResourceCleared(uid: String, placeholder: Drawable?) {
+            if (holder.boundResourceUid != uid) return
+            holder.touchImageView.setImageDrawable(placeholder)
+        }
+
+        override fun onResourceReady(uid: String, resource: Drawable) {
+            if (holder.boundResourceUid != uid) return
+            holder.imageLoaderProgress.isVisible = false
+            // Glide mess up the view size :/
+            holder.touchImageView.updateLayoutParams {
+                width = LinearLayout.LayoutParams.MATCH_PARENT
+                height = LinearLayout.LayoutParams.MATCH_PARENT
+            }
+            holder.touchImageView.setImageDrawable(resource)
+        }
+    }
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirection.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ * Copyright (C) 2018 stfalcon.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+sealed class SwipeDirection {
+    object NotDetected : SwipeDirection()
+    object Up : SwipeDirection()
+    object Down : SwipeDirection()
+    object Left : SwipeDirection()
+    object Right : SwipeDirection()
+
+    companion object {
+        fun fromAngle(angle: Double): SwipeDirection {
+            return when (angle) {
+                in 0.0..45.0    -> Right
+                in 45.0..135.0  -> Up
+                in 135.0..225.0 -> Left
+                in 225.0..315.0 -> Down
+                in 315.0..360.0 -> Right
+                else            -> NotDetected
+            }
+        }
+    }
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirectionDetector.kt

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ * Copyright (C) 2018 stfalcon.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.content.Context
+import android.view.MotionEvent
+import kotlin.math.sqrt
+
+class SwipeDirectionDetector(
+        context: Context,
+        private val onDirectionDetected: (SwipeDirection) -> Unit
+) {
+
+    private val touchSlop: Int = android.view.ViewConfiguration.get(context).scaledTouchSlop
+    private var startX: Float = 0f
+    private var startY: Float = 0f
+    private var isDetected: Boolean = false
+
+    fun handleTouchEvent(event: MotionEvent) {
+        when (event.action) {
+            MotionEvent.ACTION_DOWN                          -> {
+                startX = event.x
+                startY = event.y
+            }
+            MotionEvent.ACTION_CANCEL, MotionEvent.ACTION_UP -> {
+                if (!isDetected) {
+                    onDirectionDetected(SwipeDirection.NotDetected)
+                }
+                startY = 0.0f
+                startX = startY
+                isDetected = false
+            }
+            MotionEvent.ACTION_MOVE                          -> if (!isDetected && getEventDistance(event) > touchSlop) {
+                isDetected = true
+                onDirectionDetected(getDirection(startX, startY, event.x, event.y))
+            }
+        }
+    }
+
+    /**
+     * Given two points in the plane p1=(x1, x2) and p2=(y1, y1), this method
+     * returns the direction that an arrow pointing from p1 to p2 would have.
+     *
+     * @param x1 the x position of the first point
+     * @param y1 the y position of the first point
+     * @param x2 the x position of the second point
+     * @param y2 the y position of the second point
+     * @return the direction
+     */
+    private fun getDirection(x1: Float, y1: Float, x2: Float, y2: Float): SwipeDirection {
+        val angle = getAngle(x1, y1, x2, y2)
+        return SwipeDirection.fromAngle(angle)
+    }
+
+    /**
+     * Finds the angle between two points in the plane (x1,y1) and (x2, y2)
+     * The angle is measured with 0/360 being the X-axis to the right, angles
+     * increase counter clockwise.
+     *
+     * @param x1 the x position of the first point
+     * @param y1 the y position of the first point
+     * @param x2 the x position of the second point
+     * @param y2 the y position of the second point
+     * @return the angle between two points
+     */
+    private fun getAngle(x1: Float, y1: Float, x2: Float, y2: Float): Double {
+        val rad = Math.atan2((y1 - y2).toDouble(), (x2 - x1).toDouble()) + Math.PI
+        return (rad * 180 / Math.PI + 180) % 360
+    }
+
+    private fun getEventDistance(ev: MotionEvent): Float {
+        val dx = ev.getX(0) - startX
+        val dy = ev.getY(0) - startY
+        return sqrt((dx * dx + dy * dy).toDouble()).toFloat()
+    }
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeToDismissHandler.kt

@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ * Copyright (C) 2018 stfalcon.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.animation.Animator
+import android.animation.AnimatorListenerAdapter
+import android.annotation.SuppressLint
+import android.graphics.Rect
+import android.view.MotionEvent
+import android.view.View
+import android.view.ViewPropertyAnimator
+import android.view.animation.AccelerateInterpolator
+
+class SwipeToDismissHandler(
+        private val swipeView: View,
+        private val onDismiss: () -> Unit,
+        private val onSwipeViewMove: (translationY: Float, translationLimit: Int) -> Unit,
+        private val shouldAnimateDismiss: () -> Boolean
+) : View.OnTouchListener {
+
+    companion object {
+        private const val ANIMATION_DURATION = 200L
+    }
+
+    var translationLimit: Int = swipeView.height / 4
+    private var isTracking = false
+    private var startY: Float = 0f
+
+    @SuppressLint("ClickableViewAccessibility")
+    override fun onTouch(v: View, event: MotionEvent): Boolean {
+        when (event.action) {
+            MotionEvent.ACTION_DOWN                          -> {
+                if (swipeView.hitRect.contains(event.x.toInt(), event.y.toInt())) {
+                    isTracking = true
+                }
+                startY = event.y
+                return true
+            }
+            MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> {
+                if (isTracking) {
+                    isTracking = false
+                    onTrackingEnd(v.height)
+                }
+                return true
+            }
+            MotionEvent.ACTION_MOVE                          -> {
+                if (isTracking) {
+                    val translationY = event.y - startY
+                    swipeView.translationY = translationY
+                    onSwipeViewMove(translationY, translationLimit)
+                }
+                return true
+            }
+            else                                             -> {
+                return false
+            }
+        }
+    }
+
+    internal fun initiateDismissToBottom() {
+        animateTranslation(swipeView.height.toFloat())
+    }
+
+    private fun onTrackingEnd(parentHeight: Int) {
+        val animateTo = when {
+            swipeView.translationY < -translationLimit -> -parentHeight.toFloat()
+            swipeView.translationY > translationLimit  -> parentHeight.toFloat()
+            else                                       -> 0f
+        }
+
+        if (animateTo != 0f && !shouldAnimateDismiss()) {
+            onDismiss()
+        } else {
+            animateTranslation(animateTo)
+        }
+    }
+
+    private fun animateTranslation(translationTo: Float) {
+        swipeView.animate()
+                .translationY(translationTo)
+                .setDuration(ANIMATION_DURATION)
+                .setInterpolator(AccelerateInterpolator())
+                .setUpdateListener { onSwipeViewMove(swipeView.translationY, translationLimit) }
+                .setAnimatorListener(onAnimationEnd = {
+                    if (translationTo != 0f) {
+                        onDismiss()
+                    }
+
+                    // remove the update listener, otherwise it will be saved on the next animation execution:
+                    swipeView.animate().setUpdateListener(null)
+                })
+                .start()
+    }
+}
+
+internal fun ViewPropertyAnimator.setAnimatorListener(
+        onAnimationEnd: ((Animator?) -> Unit)? = null,
+        onAnimationStart: ((Animator?) -> Unit)? = null
+) = this.setListener(
+        object : AnimatorListenerAdapter() {
+            override fun onAnimationEnd(animation: Animator?) {
+                onAnimationEnd?.invoke(animation)
+            }
+
+            override fun onAnimationStart(animation: Animator?) {
+                onAnimationStart?.invoke(animation)
+            }
+        })
+
+internal val View?.hitRect: Rect
+    get() = Rect().also { this?.getHitRect(it) }

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/VideoLoaderTarget.kt

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.graphics.drawable.Drawable
+import android.widget.ImageView
+import androidx.core.view.isVisible
+import java.io.File
+
+interface VideoLoaderTarget {
+    fun contextView(): ImageView
+
+    fun onThumbnailResourceLoading(uid: String, placeholder: Drawable?)
+
+    fun onThumbnailLoadFailed(uid: String, errorDrawable: Drawable?)
+
+    fun onThumbnailResourceCleared(uid: String, placeholder: Drawable?)
+
+    fun onThumbnailResourceReady(uid: String, resource: Drawable)
+
+    fun onVideoFileLoading(uid: String)
+    fun onVideoFileLoadFailed(uid: String)
+    fun onVideoFileReady(uid: String, file: File)
+}
+
+internal class DefaultVideoLoaderTarget(val holder: VideoViewHolder, private val contextView: ImageView) : VideoLoaderTarget {
+    override fun contextView(): ImageView = contextView
+
+    override fun onThumbnailResourceLoading(uid: String, placeholder: Drawable?) {
+    }
+
+    override fun onThumbnailLoadFailed(uid: String, errorDrawable: Drawable?) {
+    }
+
+    override fun onThumbnailResourceCleared(uid: String, placeholder: Drawable?) {
+    }
+
+    override fun onThumbnailResourceReady(uid: String, resource: Drawable) {
+        if (holder.boundResourceUid != uid) return
+        holder.thumbnailImage.setImageDrawable(resource)
+    }
+
+    override fun onVideoFileLoading(uid: String) {
+        if (holder.boundResourceUid != uid) return
+        holder.thumbnailImage.isVisible = true
+        holder.loaderProgressBar.isVisible = true
+        holder.videoView.isVisible = false
+    }
+
+    override fun onVideoFileLoadFailed(uid: String) {
+        if (holder.boundResourceUid != uid) return
+        holder.videoFileLoadError()
+    }
+
+    override fun onVideoFileReady(uid: String, file: File) {
+        if (holder.boundResourceUid != uid) return
+        holder.thumbnailImage.isVisible = false
+        holder.loaderProgressBar.isVisible = false
+        holder.videoView.isVisible = true
+        holder.videoReady(file)
+    }
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/VideoViewHolder.kt

@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.view.View
+import android.widget.ImageView
+import android.widget.ProgressBar
+import android.widget.TextView
+import android.widget.VideoView
+import androidx.core.view.isVisible
+import io.reactivex.Observable
+import io.reactivex.android.schedulers.AndroidSchedulers
+import io.reactivex.disposables.Disposable
+import java.io.File
+import java.lang.ref.WeakReference
+import java.util.concurrent.TimeUnit
+
+// TODO, it would be probably better to use a unique media player
+// for better customization and control
+// But for now VideoView is enough, it released player when detached, we use a timer to update progress
+class VideoViewHolder constructor(itemView: View) :
+        BaseViewHolder(itemView) {
+
+    private var isSelected = false
+    private var mVideoPath: String? = null
+    private var progressDisposable: Disposable? = null
+    private var progress: Int = 0
+    private var wasPaused = false
+
+    var eventListener: WeakReference<AttachmentEventListener>? = null
+
+    val thumbnailImage: ImageView = itemView.findViewById(R.id.videoThumbnailImage)
+    val videoView: VideoView = itemView.findViewById(R.id.videoView)
+    val loaderProgressBar: ProgressBar = itemView.findViewById(R.id.videoLoaderProgress)
+    val videoControlIcon: ImageView = itemView.findViewById(R.id.videoControlIcon)
+    val errorTextView: TextView = itemView.findViewById(R.id.videoMediaViewerErrorView)
+
+    internal val target = DefaultVideoLoaderTarget(this, thumbnailImage)
+
+    override fun onRecycled() {
+        super.onRecycled()
+        progressDisposable?.dispose()
+        progressDisposable = null
+        mVideoPath = null
+    }
+
+    fun videoReady(file: File) {
+        mVideoPath = file.path
+        if (isSelected) {
+            startPlaying()
+        }
+    }
+
+    fun videoFileLoadError() {
+    }
+
+    override fun entersBackground() {
+        if (videoView.isPlaying) {
+            progress = videoView.currentPosition
+            progressDisposable?.dispose()
+            progressDisposable = null
+            videoView.stopPlayback()
+            videoView.pause()
+        }
+    }
+
+    override fun entersForeground() {
+        onSelected(isSelected)
+    }
+
+    override fun onSelected(selected: Boolean) {
+        if (!selected) {
+            if (videoView.isPlaying) {
+                progress = videoView.currentPosition
+                videoView.stopPlayback()
+            } else {
+                progress = 0
+            }
+            progressDisposable?.dispose()
+            progressDisposable = null
+        } else {
+            if (mVideoPath != null) {
+                startPlaying()
+            }
+        }
+        isSelected = true
+    }
+
+    private fun startPlaying() {
+        thumbnailImage.isVisible = false
+        loaderProgressBar.isVisible = false
+        videoView.isVisible = true
+
+        videoView.setOnPreparedListener {
+            progressDisposable?.dispose()
+            progressDisposable = Observable.interval(100, TimeUnit.MILLISECONDS)
+                    .timeInterval()
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe {
+                        val duration = videoView.duration
+                        val progress = videoView.currentPosition
+                        val isPlaying = videoView.isPlaying
+//                        Log.v("FOO", "isPlaying $isPlaying $progress/$duration")
+                        eventListener?.get()?.onEvent(AttachmentEvents.VideoEvent(isPlaying, progress, duration))
+                    }
+        }
+
+        videoView.setVideoPath(mVideoPath)
+        if (!wasPaused) {
+            videoView.start()
+            if (progress > 0) {
+                videoView.seekTo(progress)
+            }
+        }
+    }
+
+    override fun handleCommand(commands: AttachmentCommands) {
+        if (!isSelected) return
+        when (commands) {
+            AttachmentCommands.StartVideo -> {
+                wasPaused = false
+                videoView.start()
+            }
+            AttachmentCommands.PauseVideo -> {
+                wasPaused = true
+                videoView.pause()
+            }
+            is AttachmentCommands.SeekTo  -> {
+                val duration = videoView.duration
+                if (duration > 0) {
+                    val seekDuration = duration * (commands.percentProgress / 100f)
+                    videoView.seekTo(seekDuration.toInt())
+                }
+            }
+        }
+    }
+
+    override fun bind(attachmentInfo: AttachmentInfo) {
+        super.bind(attachmentInfo)
+        progress = 0
+        wasPaused = false
+    }
+}

attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/ZoomableImageViewHolder.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.attachmentviewer
+
+import android.view.View
+import android.widget.ProgressBar
+import com.github.chrisbanes.photoview.PhotoView
+
+class ZoomableImageViewHolder constructor(itemView: View) :
+        BaseViewHolder(itemView) {
+
+    val touchImageView: PhotoView = itemView.findViewById(R.id.touchImageView)
+    val imageLoaderProgress: ProgressBar = itemView.findViewById(R.id.imageLoaderProgress)
+
+    init {
+        touchImageView.setAllowParentInterceptOnEdge(false)
+        touchImageView.setOnScaleChangeListener { scaleFactor, _, _ ->
+            // Log.v("ATTACHEMENTS", "scaleFactor $scaleFactor")
+            // It's a bit annoying but when you pitch down the scaling
+            // is not exactly one :/
+            touchImageView.setAllowParentInterceptOnEdge(scaleFactor <= 1.0008f)
+        }
+        touchImageView.setScale(1.0f, true)
+        touchImageView.setAllowParentInterceptOnEdge(true)
+    }
+
+    internal val target = DefaultImageLoaderTarget.ZoomableImageTarget(this, touchImageView)
+}

attachment-viewer/src/main/res/layout/activity_attachment_viewer.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/rootContainer"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".AttachmentViewerActivity">
+
+    <View
+        android:id="@+id/backgroundView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:alpha="1"
+        android:background="@android:color/black" />
+
+    <FrameLayout
+        android:id="@+id/dismissContainer"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <FrameLayout
+            android:id="@+id/transitionImageContainer"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            tools:ignore="UselessParent"
+            tools:visibility="invisible">
+
+            <ImageView
+                android:id="@+id/transitionImageView"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                tools:ignore="ContentDescription" />
+
+        </FrameLayout>
+
+        <androidx.viewpager2.widget.ViewPager2
+            android:id="@+id/attachmentPager"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:background="@android:color/transparent"
+            android:orientation="horizontal"
+            android:visibility="visible" />
+
+    </FrameLayout>
+
+</FrameLayout>

attachment-viewer/src/main/res/layout/item_animated_image_attachment.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <ImageView
+        android:id="@+id/imageView"
+        android:visibility="visible"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+    <ProgressBar
+        android:layout_centerInParent="true"
+        android:id="@+id/imageLoaderProgress"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="40dp"
+        android:layout_height="40dp"
+        android:visibility="visible"
+        tools:visibility="gone" />
+
+</RelativeLayout>

attachment-viewer/src/main/res/layout/item_image_attachment.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <com.github.chrisbanes.photoview.PhotoView
+        android:id="@+id/touchImageView"
+        android:visibility="visible"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+    <ProgressBar
+        android:layout_centerInParent="true"
+        android:id="@+id/imageLoaderProgress"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="40dp"
+        android:layout_height="40dp"
+        android:visibility="visible"
+        tools:visibility="gone" />
+
+</RelativeLayout>

attachment-viewer/src/main/res/layout/item_video_attachment.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <ImageView
+        android:id="@+id/videoThumbnailImage"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"
+        android:scaleType="centerInside" />
+
+    <VideoView
+        android:id="@+id/videoView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_centerInParent="true" />
+
+    <ImageView
+        android:id="@+id/videoControlIcon"
+        android:layout_centerInParent="true"
+        android:visibility="gone"
+        tools:visibility="visible"
+        android:layout_width="44dp"
+        android:layout_height="44dp"
+        />
+
+    <ProgressBar
+        android:layout_centerInParent="true"
+        android:id="@+id/videoLoaderProgress"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="40dp"
+        android:layout_height="40dp"
+        android:visibility="invisible"
+        tools:visibility="visible" />
+
+    <TextView
+        android:id="@+id/videoMediaViewerErrorView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true"
+        android:layout_margin="16dp"
+        android:textSize="16sp"
+        android:visibility="gone"
+        tools:text="Error"
+        tools:visibility="visible" />
+
+</RelativeLayout>

attachment-viewer/src/main/res/layout/view_image_attachment.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/design_default_color_primary">
+
+    <TextView
+        android:id="@+id/testPage"
+        android:layout_centerInParent="true"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="1"
+        android:textSize="80sp"
+        android:textStyle="bold" />
+
+
+</RelativeLayout>

build.gradle

@@ -39,6 +39,8 @@ allprojects {
                 includeGroupByRegex "com\\.github\\.yalantis"
                 // JsonViewer
                 includeGroupByRegex 'com\\.github\\.BillCarsonFr'
+                // PhotoView
+                includeGroupByRegex 'com\\.github\\.chrisbanes'
             }
         }
         maven {

docs/voip_signaling.md

@@ -1,5 +1,6 @@
 Useful links:
 - https://codelabs.developers.google.com/codelabs/webrtc-web/#0
+- http://webrtc.github.io/webrtc-org/native-code/android/
 
 
    ╔════════════════════════════════════════════════╗

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/MatrixConfiguration.kt

@@ -33,7 +33,7 @@ data class MatrixConfiguration(
         ),
         /**
          * Optional proxy to connect to the matrix servers
-         * You can create one using for instance Proxy(proxyType, InetSocketAddress(hostname, port)
+         * You can create one using for instance Proxy(proxyType, InetSocketAddress.createUnresolved(hostname, port)
          */
         val proxy: Proxy? = null
 ) {

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/Session.kt

@@ -47,6 +47,7 @@ import im.vector.matrix.android.api.session.terms.TermsService
 import im.vector.matrix.android.api.session.typing.TypingUsersTracker
 import im.vector.matrix.android.api.session.user.UserService
 import im.vector.matrix.android.api.session.widgets.WidgetService
+import okhttp3.OkHttpClient
 
 /**
  * This interface defines interactions with a session.
@@ -205,6 +206,13 @@ interface Session :
      */
     fun removeListener(listener: Listener)
 
+    /**
+     * Will return a OkHttpClient which will manage pinned certificates and Proxy if configured.
+     * It will not add any access-token to the request.
+     * So it is exposed to let the app be able to download image with Glide or any other libraries which accept an OkHttp client.
+     */
+    fun getOkHttpClient(): OkHttpClient
+
     /**
      * A global session listener to get notified for some events.
      */

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/crypto/crosssigning/CrossSigningService.kt

@@ -61,6 +61,8 @@ interface CrossSigningService {
 
     fun canCrossSign(): Boolean
 
+    fun allPrivateKeysKnown(): Boolean
+
     fun trustUser(otherUserId: String,
                   callback: MatrixCallback<Unit>)
 

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/timeline/TimelineService.kt

@@ -39,4 +39,6 @@ interface TimelineService {
     fun getTimeLineEvent(eventId: String): TimelineEvent?
 
     fun getTimeLineEventLive(eventId: String): LiveData<Optional<TimelineEvent>>
+
+    fun getAttachmentMessages() : List<TimelineEvent>
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/crosssigning/DefaultCrossSigningService.kt

@@ -507,6 +507,13 @@ internal class DefaultCrossSigningService @Inject constructor(
                 && cryptoStore.getCrossSigningPrivateKeys()?.user != null
     }
 
+    override fun allPrivateKeysKnown(): Boolean {
+        return checkSelfTrust().isVerified()
+                && cryptoStore.getCrossSigningPrivateKeys()?.selfSigned != null
+                && cryptoStore.getCrossSigningPrivateKeys()?.user != null
+                && cryptoStore.getCrossSigningPrivateKeys()?.master != null
+    }
+
     override fun trustUser(otherUserId: String, callback: MatrixCallback<Unit>) {
         cryptoCoroutineScope.launch(coroutineDispatchers.crypto) {
             Timber.d("## CrossSigning - Mark user $userId as trusted ")

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/verification/DefaultVerificationService.kt

@@ -1234,7 +1234,7 @@ internal class DefaultVerificationService @Inject constructor(
         )
 
         // We can SCAN or SHOW QR codes only if cross-signing is enabled
-        val methodValues = if (crossSigningService.isCrossSigningVerified()) {
+        val methodValues = if (crossSigningService.isCrossSigningInitialized()) {
             // Add reciprocate method if application declares it can scan or show QR codes
             // Not sure if it ok to do that (?)
             val reciprocateMethod = methods

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/DefaultSession.kt

@@ -52,6 +52,7 @@ import im.vector.matrix.android.internal.auth.SessionParamsStore
 import im.vector.matrix.android.internal.crypto.DefaultCryptoService
 import im.vector.matrix.android.internal.di.SessionDatabase
 import im.vector.matrix.android.internal.di.SessionId
+import im.vector.matrix.android.internal.di.UnauthenticatedWithCertificate
 import im.vector.matrix.android.internal.di.WorkManagerProvider
 import im.vector.matrix.android.internal.session.identity.DefaultIdentityService
 import im.vector.matrix.android.internal.session.room.timeline.TimelineEventDecryptor
@@ -64,6 +65,7 @@ import im.vector.matrix.android.internal.util.createUIHandler
 import io.realm.RealmConfiguration
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import okhttp3.OkHttpClient
 import org.greenrobot.eventbus.EventBus
 import org.greenrobot.eventbus.Subscribe
 import org.greenrobot.eventbus.ThreadMode
@@ -113,8 +115,10 @@ internal class DefaultSession @Inject constructor(
         private val defaultIdentityService: DefaultIdentityService,
         private val integrationManagerService: IntegrationManagerService,
         private val taskExecutor: TaskExecutor,
-        private val callSignalingService: Lazy<CallSignalingService>)
-    : Session,
+        private val callSignalingService: Lazy<CallSignalingService>,
+        @UnauthenticatedWithCertificate
+        private val unauthenticatedWithCertificateOkHttpClient: Lazy<OkHttpClient>
+) : Session,
         RoomService by roomService.get(),
         RoomDirectoryService by roomDirectoryService.get(),
         GroupService by groupService.get(),
@@ -255,6 +259,10 @@ internal class DefaultSession @Inject constructor(
 
     override fun callSignalingService(): CallSignalingService = callSignalingService.get()
 
+    override fun getOkHttpClient(): OkHttpClient {
+        return unauthenticatedWithCertificateOkHttpClient.get()
+    }
+
     override fun addListener(listener: Session.Listener) {
         sessionListeners.addListener(listener)
     }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/SessionListeners.kt

@@ -22,7 +22,7 @@ import javax.inject.Inject
 
 internal class SessionListeners @Inject constructor() {
 
-    private val listeners = ArrayList<Session.Listener>()
+    private val listeners = mutableSetOf<Session.Listener>()
 
     fun addListener(listener: Session.Listener) {
         synchronized(listeners) {

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/DefaultTimelineService.kt

@@ -21,19 +21,25 @@ import androidx.lifecycle.Transformations
 import com.squareup.inject.assisted.Assisted
 import com.squareup.inject.assisted.AssistedInject
 import com.zhuinden.monarchy.Monarchy
+import im.vector.matrix.android.api.session.events.model.isImageMessage
+import im.vector.matrix.android.api.session.events.model.isVideoMessage
 import im.vector.matrix.android.api.session.room.timeline.Timeline
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.session.room.timeline.TimelineService
 import im.vector.matrix.android.api.session.room.timeline.TimelineSettings
 import im.vector.matrix.android.api.util.Optional
 import im.vector.matrix.android.api.util.toOptional
+import im.vector.matrix.android.internal.crypto.store.db.doWithRealm
 import im.vector.matrix.android.internal.database.mapper.ReadReceiptsSummaryMapper
 import im.vector.matrix.android.internal.database.mapper.TimelineEventMapper
 import im.vector.matrix.android.internal.database.model.TimelineEventEntity
+import im.vector.matrix.android.internal.database.model.TimelineEventEntityFields
 import im.vector.matrix.android.internal.database.query.where
 import im.vector.matrix.android.internal.di.SessionDatabase
 import im.vector.matrix.android.internal.task.TaskExecutor
 import im.vector.matrix.android.internal.util.fetchCopyMap
+import io.realm.Sort
+import io.realm.kotlin.where
 import org.greenrobot.eventbus.EventBus
 
 internal class DefaultTimelineService @AssistedInject constructor(@Assisted private val roomId: String,
@@ -73,10 +79,10 @@ internal class DefaultTimelineService @AssistedInject constructor(@Assisted priv
     override fun getTimeLineEvent(eventId: String): TimelineEvent? {
         return monarchy
                 .fetchCopyMap({
-                                  TimelineEventEntity.where(it, roomId = roomId, eventId = eventId).findFirst()
-                              }, { entity, _ ->
-                                  timelineEventMapper.map(entity)
-                              })
+                    TimelineEventEntity.where(it, roomId = roomId, eventId = eventId).findFirst()
+                }, { entity, _ ->
+                    timelineEventMapper.map(entity)
+                })
     }
 
     override fun getTimeLineEventLive(eventId: String): LiveData<Optional<TimelineEvent>> {
@@ -88,4 +94,16 @@ internal class DefaultTimelineService @AssistedInject constructor(@Assisted priv
             events.firstOrNull().toOptional()
         }
     }
+
+    override fun getAttachmentMessages(): List<TimelineEvent> {
+        // TODO pretty bad query.. maybe we should denormalize clear type in base?
+        return doWithRealm(monarchy.realmConfiguration) { realm ->
+            realm.where<TimelineEventEntity>()
+                    .equalTo(TimelineEventEntityFields.ROOM_ID, roomId)
+                    .sort(TimelineEventEntityFields.DISPLAY_INDEX, Sort.ASCENDING)
+                    .findAll()
+                    ?.mapNotNull { timelineEventMapper.map(it).takeIf { it.root.isImageMessage() || it.root.isVideoMessage() } }
+                    ?: emptyList()
+        }
+    }
 }

settings.gradle

@@ -1,2 +1,6 @@
-include ':vector', ':matrix-sdk-android', ':matrix-sdk-android-rx', ':diff-match-patch'
+include ':vector'
+include ':matrix-sdk-android'
+include ':matrix-sdk-android-rx'
+include ':diff-match-patch'
+include ':attachment-viewer'
 include ':multipicker'

vector/build.gradle

@@ -279,6 +279,7 @@ dependencies {
     implementation project(":matrix-sdk-android-rx")
     implementation project(":diff-match-patch")
     implementation project(":multipicker")
+    implementation project(":attachment-viewer")
     implementation 'com.android.support:multidex:1.0.3'
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
@@ -369,6 +370,10 @@ dependencies {
     implementation "com.github.piasy:GlideImageLoader:$big_image_viewer_version"
     implementation "com.github.piasy:ProgressPieIndicator:$big_image_viewer_version"
     implementation "com.github.piasy:GlideImageViewFactory:$big_image_viewer_version"
+
+    // implementation 'com.github.MikeOrtiz:TouchImageView:3.0.2'
+    implementation 'com.github.chrisbanes:PhotoView:2.0.0'
+
     implementation "com.github.bumptech.glide:glide:$glide_version"
     kapt "com.github.bumptech.glide:compiler:$glide_version"
     implementation 'com.danikula:videocache:2.7.1'

vector/src/main/AndroidManifest.xml

@@ -85,6 +85,11 @@
             </intent-filter>
         </activity>
         <activity android:name=".features.media.ImageMediaViewerActivity" />
+
+        <activity
+            android:name=".features.media.VectorAttachmentViewerActivity"
+            android:theme="@style/AppTheme.Transparent" />
+
         <activity android:name=".features.media.BigImageViewerActivity" />
         <activity
             android:name=".features.rageshake.BugReportActivity"

vector/src/main/assets/open_source_licenses.html

@@ -389,6 +389,9 @@ SOFTWARE.
     <li>
         <b>BillCarsonFr/JsonViewer</b>
     </li>
+    <li>
+        <b>Copyright (C) 2018 stfalcon.com</b>
+    </li>
 </ul>
 <pre>
 Apache License

vector/src/main/java/im/vector/riotx/VectorApplication.kt

@@ -32,8 +32,6 @@ import com.airbnb.epoxy.EpoxyAsyncUtil
 import com.airbnb.epoxy.EpoxyController
 import com.facebook.stetho.Stetho
 import com.gabrielittner.threetenbp.LazyThreeTen
-import com.github.piasy.biv.BigImageViewer
-import com.github.piasy.biv.loader.glide.GlideImageLoader
 import im.vector.matrix.android.api.Matrix
 import im.vector.matrix.android.api.MatrixConfiguration
 import im.vector.matrix.android.api.auth.AuthenticationService
@@ -44,15 +42,12 @@ import im.vector.riotx.core.di.HasVectorInjector
 import im.vector.riotx.core.di.VectorComponent
 import im.vector.riotx.core.extensions.configureAndStart
 import im.vector.riotx.core.rx.RxConfig
-import im.vector.riotx.features.call.WebRtcPeerConnectionManager
 import im.vector.riotx.features.configuration.VectorConfiguration
 import im.vector.riotx.features.lifecycle.VectorActivityLifecycleCallbacks
 import im.vector.riotx.features.notifications.NotificationDrawerManager
 import im.vector.riotx.features.notifications.NotificationUtils
-import im.vector.riotx.features.notifications.PushRuleTriggerListener
 import im.vector.riotx.features.popup.PopupAlertManager
 import im.vector.riotx.features.rageshake.VectorUncaughtExceptionHandler
-import im.vector.riotx.features.session.SessionListener
 import im.vector.riotx.features.settings.VectorPreferences
 import im.vector.riotx.features.version.VersionProvider
 import im.vector.riotx.push.fcm.FcmHelper
@@ -79,16 +74,13 @@ class VectorApplication :
     @Inject lateinit var emojiCompatWrapper: EmojiCompatWrapper
     @Inject lateinit var vectorUncaughtExceptionHandler: VectorUncaughtExceptionHandler
     @Inject lateinit var activeSessionHolder: ActiveSessionHolder
-    @Inject lateinit var sessionListener: SessionListener
     @Inject lateinit var notificationDrawerManager: NotificationDrawerManager
-    @Inject lateinit var pushRuleTriggerListener: PushRuleTriggerListener
     @Inject lateinit var vectorPreferences: VectorPreferences
     @Inject lateinit var versionProvider: VersionProvider
     @Inject lateinit var notificationUtils: NotificationUtils
     @Inject lateinit var appStateHandler: AppStateHandler
     @Inject lateinit var rxConfig: RxConfig
     @Inject lateinit var popupAlertManager: PopupAlertManager
-    @Inject lateinit var webRtcPeerConnectionManager: WebRtcPeerConnectionManager
 
     lateinit var vectorComponent: VectorComponent
 
@@ -114,7 +106,6 @@ class VectorApplication :
         logInfo()
         LazyThreeTen.init(this)
 
-        BigImageViewer.initialize(GlideImageLoader.with(applicationContext))
         EpoxyController.defaultDiffingHandler = EpoxyAsyncUtil.getAsyncBackgroundHandler()
         EpoxyController.defaultModelBuildingHandler = EpoxyAsyncUtil.getAsyncBackgroundHandler()
         registerActivityLifecycleCallbacks(VectorActivityLifecycleCallbacks(popupAlertManager))
@@ -137,8 +128,7 @@ class VectorApplication :
         if (authenticationService.hasAuthenticatedSessions() && !activeSessionHolder.hasActiveSession()) {
             val lastAuthenticatedSession = authenticationService.getLastAuthenticatedSession()!!
             activeSessionHolder.setActiveSession(lastAuthenticatedSession)
-            lastAuthenticatedSession.configureAndStart(applicationContext, pushRuleTriggerListener, sessionListener)
-            lastAuthenticatedSession.callSignalingService().addCallListener(webRtcPeerConnectionManager)
+            lastAuthenticatedSession.configureAndStart(applicationContext)
         }
         ProcessLifecycleOwner.get().lifecycle.addObserver(object : LifecycleObserver {
             @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)

vector/src/main/java/im/vector/riotx/core/animations/behavior/PercentViewBehavior.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 New Vector Ltd
+ * Copyright 2020 New Vector Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@ import android.graphics.drawable.ColorDrawable
 import android.util.AttributeSet
 import android.view.View
 import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.content.withStyledAttributes
 
 import im.vector.riotx.R
 import kotlin.math.abs
@@ -67,19 +68,19 @@ class PercentViewBehavior<V : View>(context: Context, attrs: AttributeSet) : Coo
     private var isPrepared: Boolean = false
 
     init {
-        val a = context.obtainStyledAttributes(attrs, R.styleable.PercentViewBehavior)
-        dependViewId = a.getResourceId(R.styleable.PercentViewBehavior_behavior_dependsOn, 0)
-        dependType = a.getInt(R.styleable.PercentViewBehavior_behavior_dependType, DEPEND_TYPE_WIDTH)
-        dependTarget = a.getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_dependTarget, UNSPECIFIED_INT)
-        targetX = a.getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_targetX, UNSPECIFIED_INT)
-        targetY = a.getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_targetY, UNSPECIFIED_INT)
-        targetWidth = a.getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_targetWidth, UNSPECIFIED_INT)
-        targetHeight = a.getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_targetHeight, UNSPECIFIED_INT)
-        targetBackgroundColor = a.getColor(R.styleable.PercentViewBehavior_behavior_targetBackgroundColor, UNSPECIFIED_INT)
-        targetAlpha = a.getFloat(R.styleable.PercentViewBehavior_behavior_targetAlpha, UNSPECIFIED_FLOAT)
-        targetRotateX = a.getFloat(R.styleable.PercentViewBehavior_behavior_targetRotateX, UNSPECIFIED_FLOAT)
-        targetRotateY = a.getFloat(R.styleable.PercentViewBehavior_behavior_targetRotateY, UNSPECIFIED_FLOAT)
-        a.recycle()
+        context.withStyledAttributes(attrs, R.styleable.PercentViewBehavior) {
+            dependViewId = getResourceId(R.styleable.PercentViewBehavior_behavior_dependsOn, 0)
+            dependType = getInt(R.styleable.PercentViewBehavior_behavior_dependType, DEPEND_TYPE_WIDTH)
+            dependTarget = getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_dependTarget, UNSPECIFIED_INT)
+            targetX = getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_targetX, UNSPECIFIED_INT)
+            targetY = getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_targetY, UNSPECIFIED_INT)
+            targetWidth = getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_targetWidth, UNSPECIFIED_INT)
+            targetHeight = getDimensionPixelOffset(R.styleable.PercentViewBehavior_behavior_targetHeight, UNSPECIFIED_INT)
+            targetBackgroundColor = getColor(R.styleable.PercentViewBehavior_behavior_targetBackgroundColor, UNSPECIFIED_INT)
+            targetAlpha = getFloat(R.styleable.PercentViewBehavior_behavior_targetAlpha, UNSPECIFIED_FLOAT)
+            targetRotateX = getFloat(R.styleable.PercentViewBehavior_behavior_targetRotateX, UNSPECIFIED_FLOAT)
+            targetRotateY = getFloat(R.styleable.PercentViewBehavior_behavior_targetRotateY, UNSPECIFIED_FLOAT)
+        }
     }
 
     private fun prepare(parent: CoordinatorLayout, child: View, dependency: View) {

vector/src/main/java/im/vector/riotx/core/di/ActiveSessionHolder.kt

@@ -20,8 +20,12 @@ import arrow.core.Option
 import im.vector.matrix.android.api.auth.AuthenticationService
 import im.vector.matrix.android.api.session.Session
 import im.vector.riotx.ActiveSessionDataSource
+import im.vector.riotx.features.call.WebRtcPeerConnectionManager
 import im.vector.riotx.features.crypto.keysrequest.KeyRequestHandler
 import im.vector.riotx.features.crypto.verification.IncomingVerificationRequestHandler
+import im.vector.riotx.features.notifications.PushRuleTriggerListener
+import im.vector.riotx.features.session.SessionListener
+import timber.log.Timber
 import java.util.concurrent.atomic.AtomicReference
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -30,23 +34,42 @@ import javax.inject.Singleton
 class ActiveSessionHolder @Inject constructor(private val authenticationService: AuthenticationService,
                                               private val sessionObservableStore: ActiveSessionDataSource,
                                               private val keyRequestHandler: KeyRequestHandler,
-                                              private val incomingVerificationRequestHandler: IncomingVerificationRequestHandler
+                                              private val incomingVerificationRequestHandler: IncomingVerificationRequestHandler,
+                                              private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager,
+                                              private val pushRuleTriggerListener: PushRuleTriggerListener,
+                                              private val sessionListener: SessionListener,
+                                              private val imageManager: ImageManager
 ) {
 
     private var activeSession: AtomicReference<Session?> = AtomicReference()
 
     fun setActiveSession(session: Session) {
+        Timber.w("setActiveSession of ${session.myUserId}")
         activeSession.set(session)
         sessionObservableStore.post(Option.just(session))
+
         keyRequestHandler.start(session)
         incomingVerificationRequestHandler.start(session)
+        session.addListener(sessionListener)
+        pushRuleTriggerListener.startWithSession(session)
+        session.callSignalingService().addCallListener(webRtcPeerConnectionManager)
+        imageManager.onSessionStarted(session)
     }
 
     fun clearActiveSession() {
+        // Do some cleanup first
+        getSafeActiveSession()?.let {
+            Timber.w("clearActiveSession of ${it.myUserId}")
+            it.callSignalingService().removeCallListener(webRtcPeerConnectionManager)
+            it.removeListener(sessionListener)
+        }
+
         activeSession.set(null)
         sessionObservableStore.post(Option.empty())
+
         keyRequestHandler.stop()
         incomingVerificationRequestHandler.stop()
+        pushRuleTriggerListener.stop()
     }
 
     fun hasActiveSession(): Boolean {

vector/src/main/java/im/vector/riotx/core/di/ImageManager.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.core.di
+
+import android.content.Context
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.model.GlideUrl
+import com.github.piasy.biv.BigImageViewer
+import com.github.piasy.biv.loader.glide.GlideImageLoader
+import im.vector.matrix.android.api.session.Session
+import im.vector.riotx.ActiveSessionDataSource
+import im.vector.riotx.core.glide.FactoryUrl
+import java.io.InputStream
+import javax.inject.Inject
+
+/**
+ * This class is used to configure the library we use for images
+ */
+class ImageManager @Inject constructor(
+        private val context: Context,
+        private val activeSessionDataSource: ActiveSessionDataSource
+) {
+
+    fun onSessionStarted(session: Session) {
+        // Do this call first
+        BigImageViewer.initialize(GlideImageLoader.with(context, session.getOkHttpClient()))
+
+        val glide = Glide.get(context)
+
+        // And this one. FIXME But are losing what BigImageViewer has done to add a Progress listener
+        glide.registry.replace(GlideUrl::class.java, InputStream::class.java, FactoryUrl(activeSessionDataSource))
+    }
+}

vector/src/main/java/im/vector/riotx/core/di/ScreenComponent.kt

@@ -48,6 +48,7 @@ import im.vector.riotx.features.invite.InviteUsersToRoomActivity
 import im.vector.riotx.features.invite.VectorInviteView
 import im.vector.riotx.features.link.LinkHandlerActivity
 import im.vector.riotx.features.login.LoginActivity
+import im.vector.riotx.features.media.VectorAttachmentViewerActivity
 import im.vector.riotx.features.media.BigImageViewerActivity
 import im.vector.riotx.features.media.ImageMediaViewerActivity
 import im.vector.riotx.features.media.VideoMediaViewerActivity
@@ -72,6 +73,7 @@ import im.vector.riotx.features.terms.ReviewTermsActivity
 import im.vector.riotx.features.ui.UiStateRepository
 import im.vector.riotx.features.widgets.WidgetActivity
 import im.vector.riotx.features.widgets.permissions.RoomWidgetPermissionBottomSheet
+import im.vector.riotx.features.workers.signout.SignOutBottomSheetDialogFragment
 
 @Component(
         dependencies = [
@@ -135,6 +137,7 @@ interface ScreenComponent {
     fun inject(activity: ReviewTermsActivity)
     fun inject(activity: WidgetActivity)
     fun inject(activity: VectorCallActivity)
+    fun inject(activity: VectorAttachmentViewerActivity)
 
     /* ==========================================================================================
      * BottomSheets
@@ -152,6 +155,7 @@ interface ScreenComponent {
     fun inject(bottomSheet: RoomWidgetPermissionBottomSheet)
     fun inject(bottomSheet: RoomWidgetsBottomSheet)
     fun inject(bottomSheet: CallControlsBottomSheet)
+    fun inject(bottomSheet: SignOutBottomSheetDialogFragment)
 
     /* ==========================================================================================
      * Others

vector/src/main/java/im/vector/riotx/core/di/ViewModelModule.kt

@@ -36,7 +36,6 @@ import im.vector.riotx.features.reactions.EmojiChooserViewModel
 import im.vector.riotx.features.roomdirectory.RoomDirectorySharedActionViewModel
 import im.vector.riotx.features.roomprofile.RoomProfileSharedActionViewModel
 import im.vector.riotx.features.userdirectory.UserDirectorySharedActionViewModel
-import im.vector.riotx.features.workers.signout.SignOutViewModel
 
 @Module
 interface ViewModelModule {
@@ -51,11 +50,6 @@ interface ViewModelModule {
      *  Below are bindings for the androidx view models (which extend ViewModel). Will be converted to MvRx ViewModel in the future.
      */
 
-    @Binds
-    @IntoMap
-    @ViewModelKey(SignOutViewModel::class)
-    fun bindSignOutViewModel(viewModel: SignOutViewModel): ViewModel
-
     @Binds
     @IntoMap
     @ViewModelKey(EmojiChooserViewModel::class)

vector/src/main/java/im/vector/riotx/core/extensions/Fragment.kt

@@ -16,9 +16,16 @@
 
 package im.vector.riotx.core.extensions
 
+import android.content.ActivityNotFoundException
+import android.content.Intent
 import android.os.Parcelable
 import androidx.fragment.app.Fragment
+import im.vector.riotx.R
 import im.vector.riotx.core.platform.VectorBaseFragment
+import im.vector.riotx.core.utils.toast
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
 
 fun VectorBaseFragment.addFragment(frameId: Int, fragment: Fragment) {
     parentFragmentManager.commitTransaction { add(frameId, fragment) }
@@ -89,3 +96,29 @@ fun Fragment.getAllChildFragments(): List<Fragment> {
 
 // Define a missing constant
 const val POP_BACK_STACK_EXCLUSIVE = 0
+
+fun Fragment.queryExportKeys(userId: String, requestCode: Int) {
+    // We need WRITE_EXTERNAL permission
+//    if (checkPermissions(PERMISSIONS_FOR_WRITING_FILES,
+//                    this,
+//                    PERMISSION_REQUEST_CODE_EXPORT_KEYS,
+//                    R.string.permissions_rationale_msg_keys_backup_export)) {
+    // WRITE permissions are not needed
+    val timestamp = SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()).let {
+        it.format(Date())
+    }
+    val intent = Intent(Intent.ACTION_CREATE_DOCUMENT)
+    intent.addCategory(Intent.CATEGORY_OPENABLE)
+    intent.type = "text/plain"
+    intent.putExtra(
+            Intent.EXTRA_TITLE,
+            "riot-megolm-export-$userId-$timestamp.txt"
+    )
+
+    try {
+        startActivityForResult(Intent.createChooser(intent, getString(R.string.keys_backup_setup_step1_manual_export)), requestCode)
+    } catch (activityNotFoundException: ActivityNotFoundException) {
+        activity?.toast(R.string.error_no_external_application_found)
+    }
+//    }
+}

vector/src/main/java/im/vector/riotx/core/extensions/Session.kt

@@ -24,20 +24,14 @@ import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupState
 import im.vector.matrix.android.api.session.sync.FilterService
 import im.vector.riotx.core.services.VectorSyncService
-import im.vector.riotx.features.notifications.PushRuleTriggerListener
-import im.vector.riotx.features.session.SessionListener
 import timber.log.Timber
 
-fun Session.configureAndStart(context: Context,
-                              pushRuleTriggerListener: PushRuleTriggerListener,
-                              sessionListener: SessionListener) {
+fun Session.configureAndStart(context: Context) {
+    Timber.i("Configure and start session for $myUserId")
     open()
-    addListener(sessionListener)
     setFilter(FilterService.FilterPreset.RiotFilter)
-    Timber.i("Configure and start session for ${this.myUserId}")
     startSyncing(context)
     refreshPushers()
-    pushRuleTriggerListener.startWithSession(this)
 }
 
 fun Session.startSyncing(context: Context) {
@@ -65,3 +59,12 @@ fun Session.hasUnsavedKeys(): Boolean {
     return cryptoService().inboundGroupSessionsCount(false) > 0
             && cryptoService().keysBackupService().state != KeysBackupState.ReadyToBackUp
 }
+
+fun Session.cannotLogoutSafely(): Boolean {
+    // has some encrypted chat
+    return hasUnsavedKeys()
+            // has local cross signing keys
+            || (cryptoService().crossSigningService().allPrivateKeysKnown()
+            // That are not backed up
+            && !sharedSecretStorageService.isRecoverySetup())
+}

vector/src/main/java/im/vector/riotx/core/glide/FactoryUrl.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.core.glide
+
+import com.bumptech.glide.integration.okhttp3.OkHttpUrlLoader
+import com.bumptech.glide.load.model.GlideUrl
+import com.bumptech.glide.load.model.ModelLoader
+import com.bumptech.glide.load.model.ModelLoaderFactory
+import com.bumptech.glide.load.model.MultiModelLoaderFactory
+import im.vector.riotx.ActiveSessionDataSource
+import okhttp3.OkHttpClient
+import java.io.InputStream
+
+class FactoryUrl(private val activeSessionDataSource: ActiveSessionDataSource) : ModelLoaderFactory<GlideUrl, InputStream> {
+
+    override fun build(multiFactory: MultiModelLoaderFactory): ModelLoader<GlideUrl, InputStream> {
+        val client = activeSessionDataSource.currentValue?.orNull()?.getOkHttpClient() ?: OkHttpClient()
+        return OkHttpUrlLoader(client)
+    }
+
+    override fun teardown() {
+        // Do nothing, this instance doesn't own the client.
+    }
+}

vector/src/main/java/im/vector/riotx/core/glide/VectorGlideModelLoader.kt

@@ -65,7 +65,7 @@ class VectorGlideDataFetcher(private val activeSessionHolder: ActiveSessionHolde
                              private val height: Int)
     : DataFetcher<InputStream> {
 
-    val client = OkHttpClient()
+    private val client = activeSessionHolder.getSafeActiveSession()?.getOkHttpClient() ?: OkHttpClient()
 
     override fun getDataClass(): Class<InputStream> {
         return InputStream::class.java

vector/src/main/java/im/vector/riotx/core/platform/EllipsizingTextView.kt

@@ -38,6 +38,7 @@ import android.text.TextUtils.substring
 import android.text.style.ForegroundColorSpan
 import android.util.AttributeSet
 import androidx.appcompat.widget.AppCompatTextView
+import androidx.core.content.withStyledAttributes
 import timber.log.Timber
 import java.util.ArrayList
 import java.util.regex.Pattern
@@ -71,6 +72,7 @@ class EllipsizingTextView @JvmOverloads constructor(context: Context, attrs: Att
     private var maxLines = 0
     private var lineSpacingMult = 1.0f
     private var lineAddVertPad = 0.0f
+
     /**
      * The end punctuation which will be removed when appending [.ELLIPSIS].
      */
@@ -408,9 +410,9 @@ class EllipsizingTextView @JvmOverloads constructor(context: Context, attrs: Att
     }
 
     init {
-        val a = context.obtainStyledAttributes(attrs, intArrayOf(android.R.attr.maxLines, android.R.attr.ellipsize), defStyle, 0)
-        maxLines = a.getInt(0, Int.MAX_VALUE)
-        a.recycle()
+        context.withStyledAttributes(attrs, intArrayOf(android.R.attr.maxLines, android.R.attr.ellipsize), defStyle) {
+            maxLines = getInt(0, Int.MAX_VALUE)
+        }
         setEndPunctuationPattern(DEFAULT_END_PUNCTUATION)
         val currentTextColor = currentTextColor
         val ellipsizeColor = Color.argb(ELLIPSIZE_ALPHA, Color.red(currentTextColor), Color.green(currentTextColor), Color.blue(currentTextColor))

vector/src/main/java/im/vector/riotx/core/platform/MaxHeightScrollView.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 New Vector Ltd
+ * Copyright 2020 New Vector Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +18,7 @@ package im.vector.riotx.core.platform
 
 import android.content.Context
 import android.util.AttributeSet
+import androidx.core.content.withStyledAttributes
 import androidx.core.widget.NestedScrollView
 import im.vector.riotx.R
 
@@ -34,9 +35,9 @@ class MaxHeightScrollView @JvmOverloads constructor(context: Context, attrs: Att
 
     init {
         if (attrs != null) {
-            val styledAttrs = context.obtainStyledAttributes(attrs, R.styleable.MaxHeightScrollView)
-            maxHeight = styledAttrs.getDimensionPixelSize(R.styleable.MaxHeightScrollView_maxHeight, DEFAULT_MAX_HEIGHT)
-            styledAttrs.recycle()
+            context.withStyledAttributes(attrs, R.styleable.MaxHeightScrollView) {
+                maxHeight = getDimensionPixelSize(R.styleable.MaxHeightScrollView_maxHeight, DEFAULT_MAX_HEIGHT)
+            }
         }
     }
 

vector/src/main/java/im/vector/riotx/core/ui/views/BottomSheetActionButton.kt

@@ -25,6 +25,7 @@ import android.view.View
 import android.widget.FrameLayout
 import android.widget.ImageView
 import android.widget.TextView
+import androidx.core.content.withStyledAttributes
 import androidx.core.view.isGone
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
@@ -117,16 +118,15 @@ class BottomSheetActionButton @JvmOverloads constructor(
         inflate(context, R.layout.item_verification_action, this)
         ButterKnife.bind(this)
 
-        val typedArray = context.obtainStyledAttributes(attrs, R.styleable.BottomSheetActionButton, 0, 0)
-        title = typedArray.getString(R.styleable.BottomSheetActionButton_actionTitle) ?: ""
-        subTitle = typedArray.getString(R.styleable.BottomSheetActionButton_actionDescription) ?: ""
-        forceStartPadding = typedArray.getBoolean(R.styleable.BottomSheetActionButton_forceStartPadding, false)
-        leftIcon = typedArray.getDrawable(R.styleable.BottomSheetActionButton_leftIcon)
+        context.withStyledAttributes(attrs, R.styleable.BottomSheetActionButton) {
+            title = getString(R.styleable.BottomSheetActionButton_actionTitle) ?: ""
+            subTitle = getString(R.styleable.BottomSheetActionButton_actionDescription) ?: ""
+            forceStartPadding = getBoolean(R.styleable.BottomSheetActionButton_forceStartPadding, false)
+            leftIcon = getDrawable(R.styleable.BottomSheetActionButton_leftIcon)
 
-        rightIcon = typedArray.getDrawable(R.styleable.BottomSheetActionButton_rightIcon)
+            rightIcon = getDrawable(R.styleable.BottomSheetActionButton_rightIcon)
 
-        tint = typedArray.getColor(R.styleable.BottomSheetActionButton_tint, ThemeUtils.getColor(context, android.R.attr.textColor))
-
-        typedArray.recycle()
+            tint = getColor(R.styleable.BottomSheetActionButton_tint, ThemeUtils.getColor(context, android.R.attr.textColor))
+        }
     }
 }

vector/src/main/java/im/vector/riotx/core/ui/views/KeysBackupBanner.kt

@@ -17,15 +17,14 @@
 package im.vector.riotx.core.ui.views
 
 import android.content.Context
-import androidx.preference.PreferenceManager
 import android.util.AttributeSet
 import android.view.View
 import android.view.ViewGroup
-import android.widget.AbsListView
 import android.widget.TextView
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.content.edit
 import androidx.core.view.isVisible
+import androidx.preference.PreferenceManager
 import androidx.transition.TransitionManager
 import butterknife.BindView
 import butterknife.ButterKnife
@@ -58,22 +57,12 @@ class KeysBackupBanner @JvmOverloads constructor(
     var delegate: Delegate? = null
     private var state: State = State.Initial
 
-    private var scrollState = AbsListView.OnScrollListener.SCROLL_STATE_IDLE
-        set(value) {
-            field = value
-
-            val pendingV = pendingVisibility
-
-            if (pendingV != null) {
-                pendingVisibility = null
-                visibility = pendingV
-            }
-        }
-
-    private var pendingVisibility: Int? = null
-
     init {
         setupView()
+        PreferenceManager.getDefaultSharedPreferences(context).edit {
+            putBoolean(BANNER_SETUP_DO_NOT_SHOW_AGAIN, false)
+            putString(BANNER_RECOVER_DO_NOT_SHOW_FOR_VERSION, "")
+        }
     }
 
     /**
@@ -91,7 +80,8 @@ class KeysBackupBanner @JvmOverloads constructor(
         state = newState
 
         hideAll()
-
+        val parent = parent as ViewGroup
+        TransitionManager.beginDelayedTransition(parent)
         when (newState) {
             State.Initial    -> renderInitial()
             State.Hidden     -> renderHidden()
@@ -102,22 +92,6 @@ class KeysBackupBanner @JvmOverloads constructor(
         }
     }
 
-    override fun setVisibility(visibility: Int) {
-        if (scrollState != AbsListView.OnScrollListener.SCROLL_STATE_IDLE) {
-            // Wait for scroll state to be idle
-            pendingVisibility = visibility
-            return
-        }
-
-        if (visibility != getVisibility()) {
-            // Schedule animation
-            val parent = parent as ViewGroup
-            TransitionManager.beginDelayedTransition(parent)
-        }
-
-        super.setVisibility(visibility)
-    }
-
     override fun onClick(v: View?) {
         when (state) {
             is State.Setup   -> {
@@ -166,6 +140,8 @@ class KeysBackupBanner @JvmOverloads constructor(
         ButterKnife.bind(this)
 
         setOnClickListener(this)
+        textView1.setOnClickListener(this)
+        textView2.setOnClickListener(this)
     }
 
     private fun renderInitial() {
@@ -184,9 +160,9 @@ class KeysBackupBanner @JvmOverloads constructor(
         } else {
             isVisible = true
 
-            textView1.setText(R.string.keys_backup_banner_setup_line1)
+            textView1.setText(R.string.secure_backup_banner_setup_line1)
             textView2.isVisible = true
-            textView2.setText(R.string.keys_backup_banner_setup_line2)
+            textView2.setText(R.string.secure_backup_banner_setup_line2)
             close.isVisible = true
         }
     }
@@ -218,10 +194,10 @@ class KeysBackupBanner @JvmOverloads constructor(
     }
 
     private fun renderBackingUp() {
-        // Do not render when backing up anymore
-        isVisible = false
-
-        textView1.setText(R.string.keys_backup_banner_in_progress)
+        isVisible = true
+        textView1.setText(R.string.secure_backup_banner_setup_line1)
+        textView2.isVisible = true
+        textView2.setText(R.string.keys_backup_banner_in_progress)
         loading.isVisible = true
     }
 

vector/src/main/java/im/vector/riotx/core/utils/DataSource.kt

@@ -36,6 +36,9 @@ open class BehaviorDataSource<T>(private val defaultValue: T? = null) : MutableD
 
     private val behaviorRelay = createRelay()
 
+    val currentValue: T?
+        get() = behaviorRelay.value
+
     override fun observe(): Observable<T> {
         return behaviorRelay.hide().observeOn(AndroidSchedulers.mainThread())
     }

vector/src/main/java/im/vector/riotx/features/call/WebRtcPeerConnectionManager.kt

@@ -22,6 +22,7 @@ import android.os.Build
 import androidx.annotation.RequiresApi
 import im.vector.matrix.android.api.MatrixCallback
 import im.vector.matrix.android.api.extensions.tryThis
+import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.call.CallState
 import im.vector.matrix.android.api.session.call.CallsListener
 import im.vector.matrix.android.api.session.call.EglUtils
@@ -31,7 +32,7 @@ import im.vector.matrix.android.api.session.room.model.call.CallAnswerContent
 import im.vector.matrix.android.api.session.room.model.call.CallCandidatesContent
 import im.vector.matrix.android.api.session.room.model.call.CallHangupContent
 import im.vector.matrix.android.api.session.room.model.call.CallInviteContent
-import im.vector.riotx.core.di.ActiveSessionHolder
+import im.vector.riotx.ActiveSessionDataSource
 import im.vector.riotx.core.services.BluetoothHeadsetReceiver
 import im.vector.riotx.core.services.CallService
 import im.vector.riotx.core.services.WiredHeadsetStateReceiver
@@ -71,9 +72,12 @@ import javax.inject.Singleton
 @Singleton
 class WebRtcPeerConnectionManager @Inject constructor(
         private val context: Context,
-        private val sessionHolder: ActiveSessionHolder
+        private val activeSessionDataSource: ActiveSessionDataSource
 ) : CallsListener {
 
+    private val currentSession: Session?
+        get() = activeSessionDataSource.currentValue?.orNull()
+
     interface CurrentCallListener {
         fun onCurrentCallChange(call: MxCall?)
         fun onCaptureStateChanged(mgr: WebRtcPeerConnectionManager) {}
@@ -288,15 +292,16 @@ class WebRtcPeerConnectionManager @Inject constructor(
     }
 
     private fun getTurnServer(callback: ((TurnServerResponse?) -> Unit)) {
-        sessionHolder.getActiveSession().callSignalingService().getTurnServer(object : MatrixCallback<TurnServerResponse?> {
-            override fun onSuccess(data: TurnServerResponse?) {
-                callback(data)
-            }
+        currentSession?.callSignalingService()
+                ?.getTurnServer(object : MatrixCallback<TurnServerResponse?> {
+                    override fun onSuccess(data: TurnServerResponse?) {
+                        callback(data)
+                    }
 
-            override fun onFailure(failure: Throwable) {
-                callback(null)
-            }
-        })
+                    override fun onFailure(failure: Throwable) {
+                        callback(null)
+                    }
+                })
     }
 
     fun attachViewRenderers(localViewRenderer: SurfaceViewRenderer?, remoteViewRenderer: SurfaceViewRenderer, mode: String?) {
@@ -310,7 +315,7 @@ class WebRtcPeerConnectionManager @Inject constructor(
         currentCall?.mxCall
                 ?.takeIf { it.state is CallState.Connected }
                 ?.let { mxCall ->
-                    val name = sessionHolder.getSafeActiveSession()?.getUser(mxCall.otherUserId)?.getBestName()
+                    val name = currentSession?.getUser(mxCall.otherUserId)?.getBestName()
                             ?: mxCall.roomId
                     // Start background service with notification
                     CallService.onPendingCall(
@@ -318,7 +323,7 @@ class WebRtcPeerConnectionManager @Inject constructor(
                             isVideo = mxCall.isVideoCall,
                             roomName = name,
                             roomId = mxCall.roomId,
-                            matrixId = sessionHolder.getSafeActiveSession()?.myUserId ?: "",
+                            matrixId = currentSession?.myUserId ?: "",
                             callId = mxCall.callId)
                 }
 
@@ -373,14 +378,14 @@ class WebRtcPeerConnectionManager @Inject constructor(
         val mxCall = callContext.mxCall
         // Update service state
 
-        val name = sessionHolder.getSafeActiveSession()?.getUser(mxCall.otherUserId)?.getBestName()
+        val name = currentSession?.getUser(mxCall.otherUserId)?.getBestName()
                 ?: mxCall.roomId
         CallService.onPendingCall(
                 context = context,
                 isVideo = mxCall.isVideoCall,
                 roomName = name,
                 roomId = mxCall.roomId,
-                matrixId = sessionHolder.getSafeActiveSession()?.myUserId ?: "",
+                matrixId = currentSession?.myUserId ?: "",
                 callId = mxCall.callId
         )
         executor.execute {
@@ -563,14 +568,14 @@ class WebRtcPeerConnectionManager @Inject constructor(
                     ?.let { mxCall ->
                         // Start background service with notification
 
-                        val name = sessionHolder.getSafeActiveSession()?.getUser(mxCall.otherUserId)?.getBestName()
+                        val name = currentSession?.getUser(mxCall.otherUserId)?.getBestName()
                                 ?: mxCall.otherUserId
                         CallService.onOnGoingCallBackground(
                                 context = context,
                                 isVideo = mxCall.isVideoCall,
                                 roomName = name,
                                 roomId = mxCall.roomId,
-                                matrixId = sessionHolder.getSafeActiveSession()?.myUserId ?: "",
+                                matrixId = currentSession?.myUserId ?: "",
                                 callId = mxCall.callId
                         )
                     }
@@ -631,20 +636,20 @@ class WebRtcPeerConnectionManager @Inject constructor(
         }
 
         Timber.v("## VOIP startOutgoingCall in room $signalingRoomId to $otherUserId isVideo $isVideoCall")
-        val createdCall = sessionHolder.getSafeActiveSession()?.callSignalingService()?.createOutgoingCall(signalingRoomId, otherUserId, isVideoCall) ?: return
+        val createdCall = currentSession?.callSignalingService()?.createOutgoingCall(signalingRoomId, otherUserId, isVideoCall) ?: return
         val callContext = CallContext(createdCall)
 
         audioManager.startForCall(createdCall)
         currentCall = callContext
 
-        val name = sessionHolder.getSafeActiveSession()?.getUser(createdCall.otherUserId)?.getBestName()
+        val name = currentSession?.getUser(createdCall.otherUserId)?.getBestName()
                 ?: createdCall.otherUserId
         CallService.onOutgoingCallRinging(
                 context = context.applicationContext,
                 isVideo = createdCall.isVideoCall,
                 roomName = name,
                 roomId = createdCall.roomId,
-                matrixId = sessionHolder.getSafeActiveSession()?.myUserId ?: "",
+                matrixId = currentSession?.myUserId ?: "",
                 callId = createdCall.callId)
 
         executor.execute {
@@ -693,14 +698,14 @@ class WebRtcPeerConnectionManager @Inject constructor(
         }
 
         // Start background service with notification
-        val name = sessionHolder.getSafeActiveSession()?.getUser(mxCall.otherUserId)?.getBestName()
+        val name = currentSession?.getUser(mxCall.otherUserId)?.getBestName()
                 ?: mxCall.otherUserId
         CallService.onIncomingCallRinging(
                 context = context,
                 isVideo = mxCall.isVideoCall,
                 roomName = name,
                 roomId = mxCall.roomId,
-                matrixId = sessionHolder.getSafeActiveSession()?.myUserId ?: "",
+                matrixId = currentSession?.myUserId ?: "",
                 callId = mxCall.callId
         )
 
@@ -818,14 +823,14 @@ class WebRtcPeerConnectionManager @Inject constructor(
         }
         val mxCall = call.mxCall
         // Update service state
-        val name = sessionHolder.getSafeActiveSession()?.getUser(mxCall.otherUserId)?.getBestName()
+        val name = currentSession?.getUser(mxCall.otherUserId)?.getBestName()
                 ?: mxCall.otherUserId
         CallService.onPendingCall(
                 context = context,
                 isVideo = mxCall.isVideoCall,
                 roomName = name,
                 roomId = mxCall.roomId,
-                matrixId = sessionHolder.getSafeActiveSession()?.myUserId ?: "",
+                matrixId = currentSession?.myUserId ?: "",
                 callId = mxCall.callId
         )
         executor.execute {

vector/src/main/java/im/vector/riotx/features/crypto/keys/KeysExporter.kt

@@ -17,37 +17,34 @@
 package im.vector.riotx.features.crypto.keys
 
 import android.content.Context
-import android.os.Environment
+import android.net.Uri
 import im.vector.matrix.android.api.MatrixCallback
 import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.internal.extensions.foldToCallback
 import im.vector.matrix.android.internal.util.awaitCallback
-import im.vector.riotx.core.files.addEntryToDownloadManager
-import im.vector.riotx.core.files.writeToFile
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
-import java.io.File
 
 class KeysExporter(private val session: Session) {
 
     /**
      * Export keys and return the file path with the callback
      */
-    fun export(context: Context, password: String, callback: MatrixCallback<String>) {
+    fun export(context: Context, password: String, uri: Uri, callback: MatrixCallback<Boolean>) {
         GlobalScope.launch(Dispatchers.Main) {
             runCatching {
-                val data = awaitCallback<ByteArray> { session.cryptoService().exportRoomKeys(password, it) }
                 withContext(Dispatchers.IO) {
-                    val parentDir = context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS)
-                    val file = File(parentDir, "riotx-keys-" + System.currentTimeMillis() + ".txt")
-
-                    writeToFile(data, file)
-
-                    addEntryToDownloadManager(context, file, "text/plain")
-
-                    file.absolutePath
+                    val data = awaitCallback<ByteArray> { session.cryptoService().exportRoomKeys(password, it) }
+                    val os = context.contentResolver?.openOutputStream(uri)
+                    if (os == null) {
+                        false
+                    } else {
+                        os.write(data)
+                        os.flush()
+                        true
+                    }
                 }
             }.foldToCallback(callback)
         }

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/setup/KeysBackupSetupActivity.kt

@@ -15,6 +15,8 @@
  */
 package im.vector.riotx.features.crypto.keysbackup.setup
 
+import android.app.Activity
+import android.content.ActivityNotFoundException
 import android.content.Context
 import android.content.Intent
 import androidx.appcompat.app.AlertDialog
@@ -132,36 +134,22 @@ class KeysBackupSetupActivity : SimpleFragmentActivity() {
                         this,
                         PERMISSION_REQUEST_CODE_EXPORT_KEYS,
                         R.string.permissions_rationale_msg_keys_backup_export)) {
-            ExportKeysDialog().show(this, object : ExportKeysDialog.ExportKeyDialogListener {
-                override fun onPassphrase(passphrase: String) {
-                    showWaitingView()
+            try {
+                val intent = Intent(Intent.ACTION_CREATE_DOCUMENT)
+                intent.addCategory(Intent.CATEGORY_OPENABLE)
+                intent.type = "text/plain"
+                intent.putExtra(Intent.EXTRA_TITLE, "riot-megolm-export-${session.myUserId}-${System.currentTimeMillis()}.txt")
 
-                    KeysExporter(session)
-                            .export(this@KeysBackupSetupActivity,
-                                    passphrase,
-                                    object : MatrixCallback<String> {
-                                        override fun onSuccess(data: String) {
-                                            hideWaitingView()
-
-                                            AlertDialog.Builder(this@KeysBackupSetupActivity)
-                                                    .setMessage(getString(R.string.encryption_export_saved_as, data))
-                                                    .setCancelable(false)
-                                                    .setPositiveButton(R.string.ok) { _, _ ->
-                                                        val resultIntent = Intent()
-                                                        resultIntent.putExtra(MANUAL_EXPORT, true)
-                                                        setResult(RESULT_OK, resultIntent)
-                                                        finish()
-                                                    }
-                                                    .show()
-                                        }
-
-                                        override fun onFailure(failure: Throwable) {
-                                            toast(failure.localizedMessage ?: getString(R.string.unexpected_error))
-                                            hideWaitingView()
-                                        }
-                                    })
-                }
-            })
+                startActivityForResult(
+                        Intent.createChooser(
+                                intent,
+                                getString(R.string.keys_backup_setup_step1_manual_export)
+                        ),
+                        REQUEST_CODE_SAVE_MEGOLM_EXPORT
+                )
+            } catch (activityNotFoundException: ActivityNotFoundException) {
+                toast(R.string.error_no_external_application_found)
+            }
         }
     }
 
@@ -173,6 +161,47 @@ class KeysBackupSetupActivity : SimpleFragmentActivity() {
         }
     }
 
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        if (requestCode == REQUEST_CODE_SAVE_MEGOLM_EXPORT) {
+            val uri = data?.data
+            if (resultCode == Activity.RESULT_OK && uri != null) {
+                ExportKeysDialog().show(this, object : ExportKeysDialog.ExportKeyDialogListener {
+                    override fun onPassphrase(passphrase: String) {
+                        showWaitingView()
+
+                        KeysExporter(session)
+                                .export(this@KeysBackupSetupActivity,
+                                        passphrase,
+                                        uri,
+                                        object : MatrixCallback<Boolean> {
+                                            override fun onSuccess(data: Boolean) {
+                                                if (data) {
+                                                    toast(getString(R.string.encryption_exported_successfully))
+                                                    Intent().apply {
+                                                        putExtra(MANUAL_EXPORT, true)
+                                                    }.let {
+                                                        setResult(Activity.RESULT_OK, it)
+                                                        finish()
+                                                    }
+                                                }
+                                                hideWaitingView()
+                                            }
+
+                                            override fun onFailure(failure: Throwable) {
+                                                toast(failure.localizedMessage ?: getString(R.string.unexpected_error))
+                                                hideWaitingView()
+                                            }
+                                        })
+                    }
+                })
+            } else {
+                toast(getString(R.string.unexpected_error))
+                hideWaitingView()
+            }
+        }
+        super.onActivityResult(requestCode, resultCode, data)
+    }
+
     override fun onBackPressed() {
         if (viewModel.shouldPromptOnBack) {
             if (waitingView?.isVisible == true) {
@@ -205,6 +234,7 @@ class KeysBackupSetupActivity : SimpleFragmentActivity() {
         const val KEYS_VERSION = "KEYS_VERSION"
         const val MANUAL_EXPORT = "MANUAL_EXPORT"
         const val EXTRA_SHOW_MANUAL_EXPORT = "SHOW_MANUAL_EXPORT"
+        const val REQUEST_CODE_SAVE_MEGOLM_EXPORT = 101
 
         fun intent(context: Context, showManualExport: Boolean): Intent {
             val intent = Intent(context, KeysBackupSetupActivity::class.java)

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/setup/KeysBackupSetupStep2Fragment.kt

@@ -15,13 +15,13 @@
  */
 package im.vector.riotx.features.crypto.keysbackup.setup
 
-import android.os.AsyncTask
 import android.os.Bundle
 import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import android.widget.EditText
 import android.widget.ImageView
 import androidx.lifecycle.Observer
+import androidx.lifecycle.viewModelScope
 import androidx.transition.TransitionManager
 import butterknife.BindView
 import butterknife.OnClick
@@ -33,6 +33,8 @@ import im.vector.riotx.core.extensions.showPassword
 import im.vector.riotx.core.platform.VectorBaseFragment
 import im.vector.riotx.core.ui.views.PasswordStrengthBar
 import im.vector.riotx.features.settings.VectorLocale
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import javax.inject.Inject
 
 class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment() {
@@ -117,9 +119,9 @@ class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment()
             if (newValue.isEmpty()) {
                 viewModel.passwordStrength.value = null
             } else {
-                AsyncTask.execute {
+                viewModel.viewModelScope.launch(Dispatchers.IO) {
                     val strength = zxcvbn.measure(newValue)
-                    activity?.runOnUiThread {
+                    launch(Dispatchers.Main) {
                         viewModel.passwordStrength.value = strength
                     }
                 }

vector/src/main/java/im/vector/riotx/features/crypto/recover/BootstrapCrossSigningTask.kt

@@ -32,6 +32,7 @@ import im.vector.matrix.android.api.session.securestorage.SsssKeySpec
 import im.vector.matrix.android.internal.crypto.crosssigning.toBase64NoPadding
 import im.vector.matrix.android.internal.crypto.keysbackup.model.MegolmBackupCreationInfo
 import im.vector.matrix.android.internal.crypto.keysbackup.model.rest.KeysVersion
+import im.vector.matrix.android.internal.crypto.keysbackup.model.rest.KeysVersionResult
 import im.vector.matrix.android.internal.crypto.keysbackup.util.extractCurveKeyFromRecoveryKey
 import im.vector.matrix.android.internal.crypto.model.rest.UserPasswordAuth
 import im.vector.matrix.android.internal.util.awaitCallback
@@ -84,8 +85,10 @@ class BootstrapCrossSigningTask @Inject constructor(
     override suspend fun execute(params: Params): BootstrapResult {
         val crossSigningService = session.cryptoService().crossSigningService()
 
+        Timber.d("## BootstrapCrossSigningTask: initXSOnly:${params.initOnlyCrossSigning} Starting...")
         // Ensure cross-signing is initialized. Due to migration it is maybe not always correctly initialized
         if (!crossSigningService.isCrossSigningInitialized()) {
+            Timber.d("## BootstrapCrossSigningTask: Cross signing not enabled, so initialize")
             params.progressListener?.onProgress(
                     WaitingViewData(
                             stringProvider.getString(R.string.bootstrap_crosssigning_progress_initializing),
@@ -104,8 +107,9 @@ class BootstrapCrossSigningTask @Inject constructor(
                 return handleInitializeXSigningError(failure)
             }
         } else {
-            // not sure how this can happen??
+            Timber.d("## BootstrapCrossSigningTask: Cross signing already setup, go to 4S setup")
             if (params.initOnlyCrossSigning) {
+                // not sure how this can happen??
                 return handleInitializeXSigningError(IllegalArgumentException("Cross signing already setup"))
             }
         }
@@ -119,6 +123,8 @@ class BootstrapCrossSigningTask @Inject constructor(
                         stringProvider.getString(R.string.bootstrap_crosssigning_progress_pbkdf2),
                         isIndeterminate = true)
         )
+
+        Timber.d("## BootstrapCrossSigningTask: Creating 4S key with pass: ${params.passphrase != null}")
         try {
             keyInfo = awaitCallback {
                 params.passphrase?.let { passphrase ->
@@ -141,6 +147,7 @@ class BootstrapCrossSigningTask @Inject constructor(
                 }
             }
         } catch (failure: Failure) {
+            Timber.e("## BootstrapCrossSigningTask: Creating 4S - Failed to generate key <${failure.localizedMessage}>")
             return BootstrapResult.FailedToCreateSSSSKey(failure)
         }
 
@@ -149,19 +156,24 @@ class BootstrapCrossSigningTask @Inject constructor(
                         stringProvider.getString(R.string.bootstrap_crosssigning_progress_default_key),
                         isIndeterminate = true)
         )
+
+        Timber.d("## BootstrapCrossSigningTask: Creating 4S - Set default key")
         try {
             awaitCallback<Unit> {
                 ssssService.setDefaultKey(keyInfo.keyId, it)
             }
         } catch (failure: Failure) {
             // Maybe we could just ignore this error?
+            Timber.e("## BootstrapCrossSigningTask: Creating 4S - Set default key error <${failure.localizedMessage}>")
             return BootstrapResult.FailedToSetDefaultSSSSKey(failure)
         }
 
+        Timber.d("## BootstrapCrossSigningTask: Creating 4S - gathering private keys")
         val xKeys = crossSigningService.getCrossSigningPrivateKeys()
         val mskPrivateKey = xKeys?.master ?: return BootstrapResult.MissingPrivateKey
         val sskPrivateKey = xKeys.selfSigned ?: return BootstrapResult.MissingPrivateKey
         val uskPrivateKey = xKeys.user ?: return BootstrapResult.MissingPrivateKey
+        Timber.d("## BootstrapCrossSigningTask: Creating 4S - gathering private keys success")
 
         try {
             params.progressListener?.onProgress(
@@ -170,6 +182,7 @@ class BootstrapCrossSigningTask @Inject constructor(
                             isIndeterminate = true
                     )
             )
+            Timber.d("## BootstrapCrossSigningTask: Creating 4S - Storing MSK...")
             awaitCallback<Unit> {
                 ssssService.storeSecret(
                         MASTER_KEY_SSSS_NAME,
@@ -183,6 +196,7 @@ class BootstrapCrossSigningTask @Inject constructor(
                             isIndeterminate = true
                     )
             )
+            Timber.d("## BootstrapCrossSigningTask: Creating 4S - Storing USK...")
             awaitCallback<Unit> {
                 ssssService.storeSecret(
                         USER_SIGNING_KEY_SSSS_NAME,
@@ -196,6 +210,7 @@ class BootstrapCrossSigningTask @Inject constructor(
                             stringProvider.getString(R.string.bootstrap_crosssigning_progress_save_ssk), isIndeterminate = true
                     )
             )
+            Timber.d("## BootstrapCrossSigningTask: Creating 4S - Storing SSK...")
             awaitCallback<Unit> {
                 ssssService.storeSecret(
                         SELF_SIGNING_KEY_SSSS_NAME,
@@ -204,6 +219,7 @@ class BootstrapCrossSigningTask @Inject constructor(
                 )
             }
         } catch (failure: Failure) {
+            Timber.e("## BootstrapCrossSigningTask: Creating 4S - Failed to store keys <${failure.localizedMessage}>")
             // Maybe we could just ignore this error?
             return BootstrapResult.FailedToStorePrivateKeyInSSSS(failure)
         }
@@ -215,7 +231,14 @@ class BootstrapCrossSigningTask @Inject constructor(
                 )
         )
         try {
-            if (session.cryptoService().keysBackupService().keysBackupVersion == null) {
+            Timber.d("## BootstrapCrossSigningTask: Creating 4S - Checking megolm backup")
+
+            // First ensure that in sync
+            val serverVersion = awaitCallback<KeysVersionResult?> {
+                session.cryptoService().keysBackupService().getCurrentVersion(it)
+            }
+            if (serverVersion == null) {
+                Timber.d("## BootstrapCrossSigningTask: Creating 4S - Create megolm backup")
                 val creationInfo = awaitCallback<MegolmBackupCreationInfo> {
                     session.cryptoService().keysBackupService().prepareKeysBackupVersion(null, null, it)
                 }
@@ -223,6 +246,7 @@ class BootstrapCrossSigningTask @Inject constructor(
                     session.cryptoService().keysBackupService().createKeysBackupVersion(creationInfo, it)
                 }
                 // Save it for gossiping
+                Timber.d("## BootstrapCrossSigningTask: Creating 4S - Save megolm backup key for gossiping")
                 session.cryptoService().keysBackupService().saveBackupRecoveryKey(creationInfo.recoveryKey, version = version.version)
 
                 awaitCallback<Unit> {
@@ -239,6 +263,7 @@ class BootstrapCrossSigningTask @Inject constructor(
             Timber.e("## BootstrapCrossSigningTask: Failed to init keybackup")
         }
 
+        Timber.d("## BootstrapCrossSigningTask: initXSOnly:${params.initOnlyCrossSigning} Finished")
         return BootstrapResult.Success(keyInfo)
     }
 

vector/src/main/java/im/vector/riotx/features/crypto/recover/BootstrapSharedViewModel.kt

@@ -406,7 +406,10 @@ class BootstrapSharedViewModel @AssistedInject constructor(
                         setState {
                             copy(
                                     recoveryKeyCreationInfo = bootstrapResult.keyInfo,
-                                    step = BootstrapStep.SaveRecoveryKey(false)
+                                    step = BootstrapStep.SaveRecoveryKey(
+                                            // If a passphrase was used, saving key is optional
+                                            state.passphrase != null
+                                    )
                             )
                         }
                     }

vector/src/main/java/im/vector/riotx/features/crypto/verification/VerificationBottomSheet.kt

@@ -250,7 +250,10 @@ class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment() {
             is VerificationTxState.Started,
             is VerificationTxState.WaitingOtherReciprocateConfirm -> {
                 showFragment(VerificationQRWaitingFragment::class, Bundle().apply {
-                    putParcelable(MvRx.KEY_ARG, VerificationQRWaitingFragment.Args(state.isMe, state.otherUserMxItem?.getBestName() ?: ""))
+                    putParcelable(MvRx.KEY_ARG, VerificationQRWaitingFragment.Args(
+                            isMe = state.isMe,
+                            otherUserName = state.otherUserMxItem?.getBestName() ?: ""
+                    ))
                 })
                 return@withState
             }
@@ -353,6 +356,17 @@ class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment() {
                 }
             }
         }
+        fun forSelfVerification(session: Session, outgoingRequest: String): VerificationBottomSheet {
+            return VerificationBottomSheet().apply {
+                arguments = Bundle().apply {
+                    putParcelable(MvRx.KEY_ARG, VerificationArgs(
+                            otherUserId = session.myUserId,
+                            selfVerificationMode = true,
+                            verificationId = outgoingRequest
+                    ))
+                }
+            }
+        }
 
         const val WAITING_SELF_VERIF_TAG: String = "WAITING_SELF_VERIF_TAG"
     }

vector/src/main/java/im/vector/riotx/features/home/AvatarRenderer.kt

@@ -65,19 +65,19 @@ class AvatarRenderer @Inject constructor(private val activeSessionHolder: Active
 
     @UiThread
     fun render(context: Context,
-               glideRequest: GlideRequests,
+               glideRequests: GlideRequests,
                matrixItem: MatrixItem,
                target: Target<Drawable>) {
         val placeholder = getPlaceholderDrawable(context, matrixItem)
-        buildGlideRequest(glideRequest, matrixItem.avatarUrl)
+        buildGlideRequest(glideRequests, matrixItem.avatarUrl)
                 .placeholder(placeholder)
                 .into(target)
     }
 
     @AnyThread
     @Throws
-    fun shortcutDrawable(context: Context, glideRequest: GlideRequests, matrixItem: MatrixItem, iconSize: Int): Bitmap {
-        return glideRequest
+    fun shortcutDrawable(context: Context, glideRequests: GlideRequests, matrixItem: MatrixItem, iconSize: Int): Bitmap {
+        return glideRequests
                 .asBitmap()
                 .apply {
                     val resolvedUrl = resolvedUrl(matrixItem.avatarUrl)
@@ -98,8 +98,8 @@ class AvatarRenderer @Inject constructor(private val activeSessionHolder: Active
     }
 
     @AnyThread
-    fun getCachedDrawable(glideRequest: GlideRequests, matrixItem: MatrixItem): Drawable {
-        return buildGlideRequest(glideRequest, matrixItem.avatarUrl)
+    fun getCachedDrawable(glideRequests: GlideRequests, matrixItem: MatrixItem): Drawable {
+        return buildGlideRequest(glideRequests, matrixItem.avatarUrl)
                 .onlyRetrieveFromCache(true)
                 .submit()
                 .get()
@@ -117,9 +117,9 @@ class AvatarRenderer @Inject constructor(private val activeSessionHolder: Active
 
     // PRIVATE API *********************************************************************************
 
-    private fun buildGlideRequest(glideRequest: GlideRequests, avatarUrl: String?): GlideRequest<Drawable> {
+    private fun buildGlideRequest(glideRequests: GlideRequests, avatarUrl: String?): GlideRequest<Drawable> {
         val resolvedUrl = resolvedUrl(avatarUrl)
-        return glideRequest
+        return glideRequests
                 .load(resolvedUrl)
                 .apply(RequestOptions.circleCropTransform())
     }

vector/src/main/java/im/vector/riotx/features/home/HomeActivity.kt

@@ -46,7 +46,8 @@ import im.vector.riotx.features.popup.PopupAlertManager
 import im.vector.riotx.features.popup.VerificationVectorAlert
 import im.vector.riotx.features.rageshake.VectorUncaughtExceptionHandler
 import im.vector.riotx.features.settings.VectorPreferences
-import im.vector.riotx.features.workers.signout.SignOutViewModel
+import im.vector.riotx.features.workers.signout.ServerBackupStatusViewModel
+import im.vector.riotx.features.workers.signout.ServerBackupStatusViewState
 import im.vector.riotx.push.fcm.FcmHelper
 import kotlinx.android.parcel.Parcelize
 import kotlinx.android.synthetic.main.activity_home.*
@@ -60,13 +61,16 @@ data class HomeActivityArgs(
         val accountCreation: Boolean
 ) : Parcelable
 
-class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDetectorSharedViewModel.Factory {
+class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDetectorSharedViewModel.Factory, ServerBackupStatusViewModel.Factory {
 
     private lateinit var sharedActionViewModel: HomeSharedActionViewModel
 
     private val homeActivityViewModel: HomeActivityViewModel by viewModel()
     @Inject lateinit var viewModelFactory: HomeActivityViewModel.Factory
 
+    private val serverBackupStatusViewModel: ServerBackupStatusViewModel by viewModel()
+    @Inject lateinit var  serverBackupviewModelFactory: ServerBackupStatusViewModel.Factory
+
     @Inject lateinit var activeSessionHolder: ActiveSessionHolder
     @Inject lateinit var vectorUncaughtExceptionHandler: VectorUncaughtExceptionHandler
     @Inject lateinit var pushManager: PushersManager
@@ -92,6 +96,10 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
         return unknownDeviceViewModelFactory.create(initialState)
     }
 
+    override fun create(initialState: ServerBackupStatusViewState): ServerBackupStatusViewModel {
+        return serverBackupviewModelFactory.create(initialState)
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         FcmHelper.ensureFcmTokenIsRetrieved(this, pushManager, vectorPreferences.areNotificationEnabledForDevice())
@@ -177,7 +185,11 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
                 R.string.crosssigning_verify_this_session,
                 R.string.confirm_your_identity
         ) {
-            it.navigator.waitSessionVerification(it)
+            if (event.waitForIncomingRequest) {
+                it.navigator.waitSessionVerification(it)
+            } else {
+                it.navigator.requestSelfSessionVerification(it)
+            }
         }
     }
 
@@ -230,7 +242,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
         }
 
         // Force remote backup state update to update the banner if needed
-        viewModelProvider.get(SignOutViewModel::class.java).refreshRemoteStateIfNeeded()
+        serverBackupStatusViewModel.refreshRemoteStateIfNeeded()
     }
 
     override fun configure(toolbar: Toolbar) {

vector/src/main/java/im/vector/riotx/features/home/HomeActivityViewEvents.kt

@@ -21,5 +21,5 @@ import im.vector.riotx.core.platform.VectorViewEvents
 
 sealed class HomeActivityViewEvents : VectorViewEvents {
     data class AskPasswordToInitCrossSigning(val userItem: MatrixItem.UserItem?) : HomeActivityViewEvents()
-    data class OnNewSession(val userItem: MatrixItem.UserItem?) : HomeActivityViewEvents()
+    data class OnNewSession(val userItem: MatrixItem.UserItem?, val waitForIncomingRequest: Boolean = true) : HomeActivityViewEvents()
 }

vector/src/main/java/im/vector/riotx/features/home/HomeActivityViewModel.kt

@@ -130,7 +130,14 @@ class HomeActivityViewModel @AssistedInject constructor(
                     // Cross-signing is already set up for this user, is it trusted?
                     if (!mxCrossSigningInfo.isTrusted()) {
                         // New session
-                        _viewEvents.post(HomeActivityViewEvents.OnNewSession(session.getUser(session.myUserId)?.toMatrixItem()))
+                        _viewEvents.post(
+                                HomeActivityViewEvents.OnNewSession(
+                                        session.getUser(session.myUserId)?.toMatrixItem(),
+                                        // If it's an old unverified, we should send requests
+                                        // instead of waiting for an incoming one
+                                        reAuthHelper.data != null
+                                )
+                        )
                     }
                 } else {
                     // Initialize cross-signing

vector/src/main/java/im/vector/riotx/features/home/HomeDetailFragment.kt

@@ -27,7 +27,6 @@ import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
 import com.google.android.material.bottomnavigation.BottomNavigationItemView
 import com.google.android.material.bottomnavigation.BottomNavigationMenuView
-import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupState
 import im.vector.matrix.android.api.session.group.model.GroupSummary
 import im.vector.matrix.android.api.util.toMatrixItem
 import im.vector.matrix.android.internal.crypto.model.rest.DeviceInfo
@@ -50,13 +49,10 @@ import im.vector.riotx.features.home.room.list.UnreadCounterBadgeView
 import im.vector.riotx.features.popup.PopupAlertManager
 import im.vector.riotx.features.popup.VerificationVectorAlert
 import im.vector.riotx.features.settings.VectorSettingsActivity.Companion.EXTRA_DIRECT_ACCESS_SECURITY_PRIVACY_MANAGE_SESSIONS
-import im.vector.riotx.features.workers.signout.SignOutViewModel
+import im.vector.riotx.features.workers.signout.BannerState
+import im.vector.riotx.features.workers.signout.ServerBackupStatusViewModel
+import im.vector.riotx.features.workers.signout.ServerBackupStatusViewState
 import kotlinx.android.synthetic.main.fragment_home_detail.*
-import kotlinx.android.synthetic.main.fragment_home_detail.activeCallPiP
-import kotlinx.android.synthetic.main.fragment_home_detail.activeCallPiPWrap
-import kotlinx.android.synthetic.main.fragment_home_detail.activeCallView
-import kotlinx.android.synthetic.main.fragment_home_detail.syncStateView
-import kotlinx.android.synthetic.main.fragment_room_detail.*
 import timber.log.Timber
 import javax.inject.Inject
 
@@ -66,15 +62,17 @@ private const val INDEX_ROOMS = 2
 
 class HomeDetailFragment @Inject constructor(
         val homeDetailViewModelFactory: HomeDetailViewModel.Factory,
+        private val serverBackupStatusViewModelFactory: ServerBackupStatusViewModel.Factory,
         private val avatarRenderer: AvatarRenderer,
         private val alertManager: PopupAlertManager,
         private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager
-) : VectorBaseFragment(), KeysBackupBanner.Delegate, ActiveCallView.Callback {
+) : VectorBaseFragment(), KeysBackupBanner.Delegate, ActiveCallView.Callback, ServerBackupStatusViewModel.Factory {
 
     private val unreadCounterBadgeViews = arrayListOf<UnreadCounterBadgeView>()
 
     private val viewModel: HomeDetailViewModel by fragmentViewModel()
     private val unknownDeviceDetectorSharedViewModel: UnknownDeviceDetectorSharedViewModel by activityViewModel()
+    private val serverBackupStatusViewModel: ServerBackupStatusViewModel by activityViewModel()
 
     private lateinit var sharedActionViewModel: HomeSharedActionViewModel
     private lateinit var sharedCallActionViewModel: SharedActiveCallViewModel
@@ -196,34 +194,14 @@ class HomeDetailFragment @Inject constructor(
     }
 
     private fun setupKeysBackupBanner() {
-        // Keys backup banner
-        // Use the SignOutViewModel, it observe the keys backup state and this is what we need here
-        val model = fragmentViewModelProvider.get(SignOutViewModel::class.java)
-
-        model.keysBackupState.observe(viewLifecycleOwner, Observer { keysBackupState ->
-            when (keysBackupState) {
-                null                               ->
-                    homeKeysBackupBanner.render(KeysBackupBanner.State.Hidden, false)
-                KeysBackupState.Disabled           ->
-                    homeKeysBackupBanner.render(KeysBackupBanner.State.Setup(model.getNumberOfKeysToBackup()), false)
-                KeysBackupState.NotTrusted,
-                KeysBackupState.WrongBackUpVersion ->
-                    // In this case, getCurrentBackupVersion() should not return ""
-                    homeKeysBackupBanner.render(KeysBackupBanner.State.Recover(model.getCurrentBackupVersion()), false)
-                KeysBackupState.WillBackUp,
-                KeysBackupState.BackingUp          ->
-                    homeKeysBackupBanner.render(KeysBackupBanner.State.BackingUp, false)
-                KeysBackupState.ReadyToBackUp      ->
-                    if (model.canRestoreKeys()) {
-                        homeKeysBackupBanner.render(KeysBackupBanner.State.Update(model.getCurrentBackupVersion()), false)
-                    } else {
-                        homeKeysBackupBanner.render(KeysBackupBanner.State.Hidden, false)
-                    }
-                else                               ->
-                    homeKeysBackupBanner.render(KeysBackupBanner.State.Hidden, false)
+        serverBackupStatusViewModel.subscribe(this) {
+            when (val banState = it.bannerState.invoke()) {
+                is BannerState.Setup  -> homeKeysBackupBanner.render(KeysBackupBanner.State.Setup(banState.numberOfKeys), false)
+                BannerState.BackingUp ->  homeKeysBackupBanner.render(KeysBackupBanner.State.BackingUp, false)
+                null,
+                BannerState.Hidden    -> homeKeysBackupBanner.render(KeysBackupBanner.State.Hidden, false)
             }
-        })
-
+        }.disposeOnDestroyView()
         homeKeysBackupBanner.delegate = this
     }
 
@@ -332,4 +310,8 @@ class HomeDetailFragment @Inject constructor(
             }
         }
     }
+
+    override fun create(initialState: ServerBackupStatusViewState): ServerBackupStatusViewModel {
+        return serverBackupStatusViewModelFactory.create(initialState)
+    }
 }

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt

@@ -1174,14 +1174,27 @@ class RoomDetailFragment @Inject constructor(
     }
 
     override fun onImageMessageClicked(messageImageContent: MessageImageInfoContent, mediaData: ImageContentRenderer.Data, view: View) {
-        navigator.openImageViewer(requireActivity(), mediaData, view) { pairs ->
+        navigator.openMediaViewer(
+                activity = requireActivity(),
+                roomId = roomDetailArgs.roomId,
+                mediaData = mediaData,
+                view = view
+        ) { pairs ->
             pairs.add(Pair(roomToolbar, ViewCompat.getTransitionName(roomToolbar) ?: ""))
             pairs.add(Pair(composerLayout, ViewCompat.getTransitionName(composerLayout) ?: ""))
         }
     }
 
     override fun onVideoMessageClicked(messageVideoContent: MessageVideoContent, mediaData: VideoContentRenderer.Data, view: View) {
-        navigator.openVideoViewer(requireActivity(), mediaData)
+        navigator.openMediaViewer(
+                activity = requireActivity(),
+                roomId = roomDetailArgs.roomId,
+                mediaData = mediaData,
+                view = view
+        ) { pairs ->
+            pairs.add(Pair(roomToolbar, ViewCompat.getTransitionName(roomToolbar) ?: ""))
+            pairs.add(Pair(composerLayout, ViewCompat.getTransitionName(composerLayout) ?: ""))
+        }
     }
 
 //    override fun onFileMessageClicked(eventId: String, messageFileContent: MessageFileContent) {
@@ -1199,7 +1212,7 @@ class RoomDetailFragment @Inject constructor(
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
         if (allGranted(grantResults)) {
             when (requestCode) {
-                SAVE_ATTACHEMENT_REQUEST_CODE -> {
+                SAVE_ATTACHEMENT_REQUEST_CODE           -> {
                     sharedActionViewModel.pendingAction?.let {
                         handleActions(it)
                         sharedActionViewModel.pendingAction = null
@@ -1340,13 +1353,13 @@ class RoomDetailFragment @Inject constructor(
 
     private fun onShareActionClicked(action: EventSharedAction.Share) {
         session.fileService().downloadFile(
-                FileService.DownloadMode.FOR_EXTERNAL_SHARE,
-                action.eventId,
-                action.messageContent.body,
-                action.messageContent.getFileUrl(),
-                action.messageContent.mimeType,
-                action.messageContent.encryptedFileInfo?.toElementToDecrypt(),
-                object : MatrixCallback<File> {
+                downloadMode = FileService.DownloadMode.FOR_EXTERNAL_SHARE,
+                id = action.eventId,
+                fileName = action.messageContent.body,
+                mimeType = action.messageContent.mimeType,
+                url = action.messageContent.getFileUrl(),
+                elementToDecrypt = action.messageContent.encryptedFileInfo?.toElementToDecrypt(),
+                callback = object : MatrixCallback<File> {
                     override fun onSuccess(data: File) {
                         if (isAdded) {
                             shareMedia(requireContext(), data, getMimeTypeFromUri(requireContext(), data.toUri()))

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailViewModel.kt

@@ -877,13 +877,13 @@ class RoomDetailViewModel @AssistedInject constructor(
             }
         } else {
             session.fileService().downloadFile(
-                    FileService.DownloadMode.FOR_INTERNAL_USE,
-                    action.eventId,
-                    action.messageFileContent.getFileName(),
-                    action.messageFileContent.mimeType,
-                    mxcUrl,
-                    action.messageFileContent.encryptedFileInfo?.toElementToDecrypt(),
-                    object : MatrixCallback<File> {
+                    downloadMode = FileService.DownloadMode.FOR_INTERNAL_USE,
+                    id = action.eventId,
+                    fileName = action.messageFileContent.getFileName(),
+                    mimeType = action.messageFileContent.mimeType,
+                    url = mxcUrl,
+                    elementToDecrypt = action.messageFileContent.encryptedFileInfo?.toElementToDecrypt(),
+                    callback = object : MatrixCallback<File> {
                         override fun onSuccess(data: File) {
                             _viewEvents.post(RoomDetailViewEvents.DownloadFileState(
                                     action.messageFileContent.mimeType,

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/factory/MessageItemFactory.kt

@@ -337,7 +337,7 @@ class MessageItemFactory @Inject constructor(
                 .playable(true)
                 .highlighted(highlight)
                 .mediaData(thumbnailData)
-                .clickListener { view -> callback?.onVideoMessageClicked(messageContent, videoData, view) }
+                .clickListener { view -> callback?.onVideoMessageClicked(messageContent, videoData, view.findViewById(R.id.messageThumbnailView)) }
     }
 
     private fun buildItemForTextContent(messageContent: MessageTextContent,

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/format/NoticeEventFormatter.kt

@@ -40,17 +40,20 @@ import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.session.widgets.model.WidgetContent
 import im.vector.matrix.android.internal.crypto.MXCRYPTO_ALGORITHM_MEGOLM
 import im.vector.matrix.android.internal.crypto.model.event.EncryptionEventContent
+import im.vector.riotx.ActiveSessionDataSource
 import im.vector.riotx.R
-import im.vector.riotx.core.di.ActiveSessionHolder
 import im.vector.riotx.core.resources.StringProvider
 import timber.log.Timber
 import javax.inject.Inject
 
-class NoticeEventFormatter @Inject constructor(private val sessionHolder: ActiveSessionHolder,
+class NoticeEventFormatter @Inject constructor(private val activeSessionDataSource: ActiveSessionDataSource,
                                                private val roomHistoryVisibilityFormatter: RoomHistoryVisibilityFormatter,
                                                private val sp: StringProvider) {
 
-    private fun Event.isSentByCurrentUser() = senderId != null && senderId == sessionHolder.getSafeActiveSession()?.myUserId
+    private val currentUserId: String?
+        get() = activeSessionDataSource.currentValue?.orNull()?.myUserId
+
+    private fun Event.isSentByCurrentUser() = senderId != null && senderId == currentUserId
 
     fun format(timelineEvent: TimelineEvent): CharSequence? {
         return when (val type = timelineEvent.root.getClearType()) {
@@ -449,7 +452,6 @@ class NoticeEventFormatter @Inject constructor(private val sessionHolder: Active
         val targetDisplayName = eventContent?.displayName ?: prevEventContent?.displayName ?: event.stateKey ?: ""
         return when (eventContent?.membership) {
             Membership.INVITE -> {
-                val selfUserId = sessionHolder.getSafeActiveSession()?.myUserId
                 when {
                     eventContent.thirdPartyInvite != null -> {
                         val userWhoHasAccepted = eventContent.thirdPartyInvite?.signed?.mxid ?: event.stateKey
@@ -466,7 +468,7 @@ class NoticeEventFormatter @Inject constructor(private val sessionHolder: Active
                             sp.getString(R.string.notice_room_third_party_registered_invite, userWhoHasAccepted, threePidDisplayName)
                         }
                     }
-                    event.stateKey == selfUserId          ->
+                    event.stateKey == currentUserId       ->
                         eventContent.safeReason?.let { reason ->
                             sp.getString(R.string.notice_room_invite_you_with_reason, senderDisplayName, reason)
                         } ?: sp.getString(R.string.notice_room_invite_you, senderDisplayName)

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/PollResultLineView.kt

@@ -22,6 +22,7 @@ import android.view.View
 import android.widget.ImageView
 import android.widget.LinearLayout
 import android.widget.TextView
+import androidx.core.content.withStyledAttributes
 import butterknife.BindView
 import butterknife.ButterKnife
 import im.vector.riotx.R
@@ -73,11 +74,11 @@ class PollResultLineView @JvmOverloads constructor(
         orientation = HORIZONTAL
         ButterKnife.bind(this)
 
-        val typedArray = context.obtainStyledAttributes(attrs, R.styleable.PollResultLineView, 0, 0)
-        label = typedArray.getString(R.styleable.PollResultLineView_optionName) ?: ""
-        percent = typedArray.getString(R.styleable.PollResultLineView_optionCount) ?: ""
-        optionSelected = typedArray.getBoolean(R.styleable.PollResultLineView_optionSelected, false)
-        isWinner = typedArray.getBoolean(R.styleable.PollResultLineView_optionIsWinner, false)
-        typedArray.recycle()
+        context.withStyledAttributes(attrs, R.styleable.PollResultLineView) {
+            label = getString(R.styleable.PollResultLineView_optionName) ?: ""
+            percent = getString(R.styleable.PollResultLineView_optionCount) ?: ""
+            optionSelected = getBoolean(R.styleable.PollResultLineView_optionSelected, false)
+            isWinner = getBoolean(R.styleable.PollResultLineView_optionIsWinner, false)
+        }
     }
 }

vector/src/main/java/im/vector/riotx/features/login/LoginViewModel.kt

@@ -49,9 +49,6 @@ import im.vector.riotx.core.extensions.exhaustive
 import im.vector.riotx.core.platform.VectorViewModel
 import im.vector.riotx.core.resources.StringProvider
 import im.vector.riotx.core.utils.ensureTrailingSlash
-import im.vector.riotx.features.call.WebRtcPeerConnectionManager
-import im.vector.riotx.features.notifications.PushRuleTriggerListener
-import im.vector.riotx.features.session.SessionListener
 import im.vector.riotx.features.signout.soft.SoftLogoutActivity
 import timber.log.Timber
 import java.util.concurrent.CancellationException
@@ -64,13 +61,10 @@ class LoginViewModel @AssistedInject constructor(
         private val applicationContext: Context,
         private val authenticationService: AuthenticationService,
         private val activeSessionHolder: ActiveSessionHolder,
-        private val pushRuleTriggerListener: PushRuleTriggerListener,
         private val homeServerConnectionConfigFactory: HomeServerConnectionConfigFactory,
-        private val sessionListener: SessionListener,
         private val reAuthHelper: ReAuthHelper,
-        private val stringProvider: StringProvider,
-        private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager)
-    : VectorViewModel<LoginViewState, LoginAction, LoginViewEvents>(initialState) {
+        private val stringProvider: StringProvider
+) : VectorViewModel<LoginViewState, LoginAction, LoginViewEvents>(initialState) {
 
     @AssistedInject.Factory
     interface Factory {
@@ -667,8 +661,7 @@ class LoginViewModel @AssistedInject constructor(
 
     private fun onSessionCreated(session: Session) {
         activeSessionHolder.setActiveSession(session)
-        session.configureAndStart(applicationContext, pushRuleTriggerListener, sessionListener)
-        session.callSignalingService().addCallListener(webRtcPeerConnectionManager)
+        session.configureAndStart(applicationContext)
         setState {
             copy(
                     asyncLoginAction = Success(Unit)

vector/src/main/java/im/vector/riotx/features/media/AttachmentOverlayView.kt

@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.media
+
+import android.content.Context
+import android.graphics.Color
+import android.util.AttributeSet
+import android.view.View
+import android.widget.ImageView
+import android.widget.SeekBar
+import android.widget.TextView
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.constraintlayout.widget.Group
+import im.vector.riotx.R
+import im.vector.riotx.attachmentviewer.AttachmentEventListener
+import im.vector.riotx.attachmentviewer.AttachmentEvents
+
+class AttachmentOverlayView @JvmOverloads constructor(
+        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
+) : ConstraintLayout(context, attrs, defStyleAttr), AttachmentEventListener {
+
+    var onShareCallback: (() -> Unit)? = null
+    var onBack: (() -> Unit)? = null
+    var onPlayPause: ((play: Boolean) -> Unit)? = null
+    var videoSeekTo: ((progress: Int) -> Unit)? = null
+
+    private val counterTextView: TextView
+    private val infoTextView: TextView
+    private val shareImage: ImageView
+    private val overlayPlayPauseButton: ImageView
+    private val overlaySeekBar: SeekBar
+
+    var isPlaying = false
+
+    val videoControlsGroup: Group
+
+    var suspendSeekBarUpdate = false
+
+    init {
+        View.inflate(context, R.layout.merge_image_attachment_overlay, this)
+        setBackgroundColor(Color.TRANSPARENT)
+        counterTextView = findViewById(R.id.overlayCounterText)
+        infoTextView = findViewById(R.id.overlayInfoText)
+        shareImage = findViewById(R.id.overlayShareButton)
+        videoControlsGroup = findViewById(R.id.overlayVideoControlsGroup)
+        overlayPlayPauseButton = findViewById(R.id.overlayPlayPauseButton)
+        overlaySeekBar = findViewById(R.id.overlaySeekBar)
+        findViewById<ImageView>(R.id.overlayBackButton).setOnClickListener {
+            onBack?.invoke()
+        }
+        findViewById<ImageView>(R.id.overlayShareButton).setOnClickListener {
+            onShareCallback?.invoke()
+        }
+        findViewById<ImageView>(R.id.overlayPlayPauseButton).setOnClickListener {
+            onPlayPause?.invoke(!isPlaying)
+        }
+
+        overlaySeekBar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
+            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
+                if (fromUser) {
+                    videoSeekTo?.invoke(progress)
+                }
+            }
+
+            override fun onStartTrackingTouch(seekBar: SeekBar?) {
+                suspendSeekBarUpdate = true
+            }
+
+            override fun onStopTrackingTouch(seekBar: SeekBar?) {
+                suspendSeekBarUpdate = false
+            }
+        })
+    }
+
+    fun updateWith(counter: String, senderInfo: String) {
+        counterTextView.text = counter
+        infoTextView.text = senderInfo
+    }
+
+    override fun onEvent(event: AttachmentEvents) {
+        when (event) {
+            is AttachmentEvents.VideoEvent -> {
+                overlayPlayPauseButton.setImageResource(if (!event.isPlaying) R.drawable.ic_play_arrow else R.drawable.ic_pause)
+                if (!suspendSeekBarUpdate) {
+                    val safeDuration = (if (event.duration == 0) 100 else event.duration).toFloat()
+                    val percent = ((event.progress / safeDuration) * 100f).toInt().coerceAtMost(100)
+                    isPlaying = event.isPlaying
+                    overlaySeekBar.progress = percent
+                }
+            }
+        }
+    }
+}

vector/src/main/java/im/vector/riotx/features/media/BaseAttachmentProvider.kt

@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.media
+
+import android.content.Context
+import android.graphics.drawable.Drawable
+import android.view.View
+import android.widget.ImageView
+import com.bumptech.glide.request.target.CustomViewTarget
+import com.bumptech.glide.request.transition.Transition
+import im.vector.matrix.android.api.MatrixCallback
+import im.vector.matrix.android.api.session.file.FileService
+import im.vector.riotx.attachmentviewer.AttachmentInfo
+import im.vector.riotx.attachmentviewer.AttachmentSourceProvider
+import im.vector.riotx.attachmentviewer.ImageLoaderTarget
+import im.vector.riotx.attachmentviewer.VideoLoaderTarget
+import java.io.File
+
+abstract class BaseAttachmentProvider(val imageContentRenderer: ImageContentRenderer, val fileService: FileService) : AttachmentSourceProvider {
+
+    interface InteractionListener {
+        fun onDismissTapped()
+        fun onShareTapped()
+        fun onPlayPause(play: Boolean)
+        fun videoSeekTo(percent: Int)
+    }
+
+    var interactionListener: InteractionListener? = null
+
+    protected var overlayView: AttachmentOverlayView? = null
+
+    override fun overlayViewAtPosition(context: Context, position: Int): View? {
+        if (position == -1) return null
+        if (overlayView == null) {
+            overlayView = AttachmentOverlayView(context)
+            overlayView?.onBack = {
+                interactionListener?.onDismissTapped()
+            }
+            overlayView?.onShareCallback = {
+                interactionListener?.onShareTapped()
+            }
+            overlayView?.onPlayPause = { play ->
+                interactionListener?.onPlayPause(play)
+            }
+            overlayView?.videoSeekTo = { percent ->
+                interactionListener?.videoSeekTo(percent)
+            }
+        }
+        return overlayView
+    }
+
+    override fun loadImage(target: ImageLoaderTarget, info: AttachmentInfo.Image) {
+        (info.data as? ImageContentRenderer.Data)?.let {
+            imageContentRenderer.render(it, target.contextView(), object : CustomViewTarget<ImageView, Drawable>(target.contextView()) {
+                override fun onLoadFailed(errorDrawable: Drawable?) {
+                    target.onLoadFailed(info.uid, errorDrawable)
+                }
+
+                override fun onResourceCleared(placeholder: Drawable?) {
+                    target.onResourceCleared(info.uid, placeholder)
+                }
+
+                override fun onResourceReady(resource: Drawable, transition: Transition<in Drawable>?) {
+                    target.onResourceReady(info.uid, resource)
+                }
+            })
+        }
+    }
+
+    override fun loadImage(target: ImageLoaderTarget, info: AttachmentInfo.AnimatedImage) {
+        (info.data as? ImageContentRenderer.Data)?.let {
+            imageContentRenderer.render(it, target.contextView(), object : CustomViewTarget<ImageView, Drawable>(target.contextView()) {
+                override fun onLoadFailed(errorDrawable: Drawable?) {
+                    target.onLoadFailed(info.uid, errorDrawable)
+                }
+
+                override fun onResourceCleared(placeholder: Drawable?) {
+                    target.onResourceCleared(info.uid, placeholder)
+                }
+
+                override fun onResourceReady(resource: Drawable, transition: Transition<in Drawable>?) {
+                    target.onResourceReady(info.uid, resource)
+                }
+            })
+        }
+    }
+
+    override fun loadVideo(target: VideoLoaderTarget, info: AttachmentInfo.Video) {
+        val data = info.data as? VideoContentRenderer.Data ?: return
+//        videoContentRenderer.render(data,
+//                holder.thumbnailImage,
+//                holder.loaderProgressBar,
+//                holder.videoView,
+//                holder.errorTextView)
+        imageContentRenderer.render(data.thumbnailMediaData, target.contextView(), object : CustomViewTarget<ImageView, Drawable>(target.contextView()) {
+            override fun onLoadFailed(errorDrawable: Drawable?) {
+                target.onThumbnailLoadFailed(info.uid, errorDrawable)
+            }
+
+            override fun onResourceCleared(placeholder: Drawable?) {
+                target.onThumbnailResourceCleared(info.uid, placeholder)
+            }
+
+            override fun onResourceReady(resource: Drawable, transition: Transition<in Drawable>?) {
+                target.onThumbnailResourceReady(info.uid, resource)
+            }
+        })
+
+        target.onVideoFileLoading(info.uid)
+        fileService.downloadFile(
+                downloadMode = FileService.DownloadMode.FOR_INTERNAL_USE,
+                id = data.eventId,
+                mimeType = data.mimeType,
+                elementToDecrypt = data.elementToDecrypt,
+                fileName = data.filename,
+                url = data.url,
+                callback = object : MatrixCallback<File> {
+                    override fun onSuccess(data: File) {
+                        target.onVideoFileReady(info.uid, data)
+                    }
+
+                    override fun onFailure(failure: Throwable) {
+                        target.onVideoFileLoadFailed(info.uid)
+                    }
+                }
+        )
+    }
+
+    override fun clear(id: String) {
+        // TODO("Not yet implemented")
+    }
+
+    abstract fun getFileForSharing(position: Int, callback: ((File?) -> Unit))
+}

vector/src/main/java/im/vector/riotx/features/media/DataAttachmentRoomProvider.kt

@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.media
+
+import android.content.Context
+import android.view.View
+import androidx.core.view.isVisible
+import im.vector.matrix.android.api.MatrixCallback
+import im.vector.matrix.android.api.session.events.model.isVideoMessage
+import im.vector.matrix.android.api.session.file.FileService
+import im.vector.matrix.android.api.session.room.Room
+import im.vector.riotx.attachmentviewer.AttachmentInfo
+import im.vector.riotx.core.date.VectorDateFormatter
+import im.vector.riotx.core.extensions.localDateTime
+import java.io.File
+
+class DataAttachmentRoomProvider(
+        private val attachments: List<AttachmentData>,
+        private val room: Room?,
+        private val initialIndex: Int,
+        imageContentRenderer: ImageContentRenderer,
+        private val dateFormatter: VectorDateFormatter,
+        fileService: FileService) : BaseAttachmentProvider(imageContentRenderer, fileService) {
+
+    override fun getItemCount(): Int = attachments.size
+
+    override fun getAttachmentInfoAt(position: Int): AttachmentInfo {
+        return attachments[position].let {
+            when (it) {
+                is ImageContentRenderer.Data -> {
+                    if (it.mimeType == "image/gif") {
+                        AttachmentInfo.AnimatedImage(
+                                uid = it.eventId,
+                                url = it.url ?: "",
+                                data = it
+                        )
+                    } else {
+                        AttachmentInfo.Image(
+                                uid = it.eventId,
+                                url = it.url ?: "",
+                                data = it
+                        )
+                    }
+                }
+                is VideoContentRenderer.Data -> {
+                    AttachmentInfo.Video(
+                            uid = it.eventId,
+                            url = it.url ?: "",
+                            data = it,
+                            thumbnail = AttachmentInfo.Image(
+                                    uid = it.eventId,
+                                    url = it.thumbnailMediaData.url ?: "",
+                                    data = it.thumbnailMediaData
+                            )
+                    )
+                }
+                else                         -> throw IllegalArgumentException()
+            }
+        }
+    }
+
+    override fun overlayViewAtPosition(context: Context, position: Int): View? {
+        super.overlayViewAtPosition(context, position)
+        val item = attachments[position]
+        val timeLineEvent = room?.getTimeLineEvent(item.eventId)
+        if (timeLineEvent != null) {
+            val dateString = timeLineEvent.root.localDateTime().let {
+                "${dateFormatter.formatMessageDay(it)} at ${dateFormatter.formatMessageHour(it)} "
+            }
+            overlayView?.updateWith("${position + 1} of ${attachments.size}", "${timeLineEvent.senderInfo.displayName} $dateString")
+            overlayView?.videoControlsGroup?.isVisible = timeLineEvent.root.isVideoMessage()
+        } else {
+            overlayView?.updateWith("", "")
+        }
+        return overlayView
+    }
+
+    override fun getFileForSharing(position: Int, callback: (File?) -> Unit) {
+        val item = attachments[position]
+        fileService.downloadFile(
+                downloadMode = FileService.DownloadMode.FOR_EXTERNAL_SHARE,
+                id = item.eventId,
+                fileName = item.filename,
+                mimeType = item.mimeType,
+                url = item.url ?: "",
+                elementToDecrypt = item.elementToDecrypt,
+                callback = object : MatrixCallback<File> {
+                    override fun onSuccess(data: File) {
+                        callback(data)
+                    }
+
+                    override fun onFailure(failure: Throwable) {
+                        callback(null)
+                    }
+                }
+        )
+    }
+}

vector/src/main/java/im/vector/riotx/features/media/ImageContentRenderer.kt

@@ -19,11 +19,13 @@ package im.vector.riotx.features.media
 import android.graphics.drawable.Drawable
 import android.net.Uri
 import android.os.Parcelable
+import android.view.View
 import android.widget.ImageView
 import com.bumptech.glide.load.DataSource
 import com.bumptech.glide.load.engine.GlideException
 import com.bumptech.glide.load.resource.bitmap.RoundedCorners
 import com.bumptech.glide.request.RequestListener
+import com.bumptech.glide.request.target.CustomViewTarget
 import com.bumptech.glide.request.target.Target
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView.ORIENTATION_USE_EXIF
 import com.github.piasy.biv.view.BigImageView
@@ -42,21 +44,29 @@ import java.io.File
 import javax.inject.Inject
 import kotlin.math.min
 
+interface AttachmentData : Parcelable {
+    val eventId: String
+    val filename: String
+    val mimeType: String?
+    val url: String?
+    val elementToDecrypt: ElementToDecrypt?
+}
+
 class ImageContentRenderer @Inject constructor(private val activeSessionHolder: ActiveSessionHolder,
                                                private val dimensionConverter: DimensionConverter) {
 
     @Parcelize
     data class Data(
-            val eventId: String,
-            val filename: String,
-            val mimeType: String?,
-            val url: String?,
-            val elementToDecrypt: ElementToDecrypt?,
+            override val eventId: String,
+            override val filename: String,
+            override val mimeType: String?,
+            override val url: String?,
+            override val elementToDecrypt: ElementToDecrypt?,
             val height: Int?,
             val maxHeight: Int,
             val width: Int?,
             val maxWidth: Int
-    ) : Parcelable {
+    ) : AttachmentData {
 
         fun isLocalFile() = url.isLocalFile()
     }
@@ -93,6 +103,25 @@ class ImageContentRenderer @Inject constructor(private val activeSessionHolder:
                 .into(imageView)
     }
 
+    fun render(data: Data, contextView: View, target: CustomViewTarget<*, Drawable>) {
+        val req = if (data.elementToDecrypt != null) {
+            // Encrypted image
+            GlideApp
+                    .with(contextView)
+                    .load(data)
+        } else {
+            // Clear image
+            val resolvedUrl = activeSessionHolder.getActiveSession().contentUrlResolver().resolveFullSize(data.url)
+            GlideApp
+                    .with(contextView)
+                    .load(resolvedUrl)
+        }
+
+        req.override(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
+                .fitCenter()
+                .into(target)
+    }
+
     fun renderFitTarget(data: Data, mode: Mode, imageView: ImageView, callback: ((Boolean) -> Unit)? = null) {
         val size = processSize(data, mode)
 
@@ -122,6 +151,45 @@ class ImageContentRenderer @Inject constructor(private val activeSessionHolder:
                 .into(imageView)
     }
 
+    fun renderThumbnailDontTransform(data: Data, imageView: ImageView, callback: ((Boolean) -> Unit)? = null) {
+        // a11y
+        imageView.contentDescription = data.filename
+
+        val req = if (data.elementToDecrypt != null) {
+            // Encrypted image
+            GlideApp
+                    .with(imageView)
+                    .load(data)
+        } else {
+            // Clear image
+            val resolvedUrl = activeSessionHolder.getActiveSession().contentUrlResolver().resolveFullSize(data.url)
+            GlideApp
+                    .with(imageView)
+                    .load(resolvedUrl)
+        }
+
+        req.listener(object : RequestListener<Drawable> {
+            override fun onLoadFailed(e: GlideException?,
+                                      model: Any?,
+                                      target: Target<Drawable>?,
+                                      isFirstResource: Boolean): Boolean {
+                callback?.invoke(false)
+                return false
+            }
+
+            override fun onResourceReady(resource: Drawable?,
+                                         model: Any?,
+                                         target: Target<Drawable>?,
+                                         dataSource: DataSource?,
+                                         isFirstResource: Boolean): Boolean {
+                callback?.invoke(true)
+                return false
+            }
+        })
+                .dontTransform()
+                .into(imageView)
+    }
+
     private fun createGlideRequest(data: Data, mode: Mode, imageView: ImageView, size: Size): GlideRequest<Drawable> {
         return if (data.elementToDecrypt != null) {
             // Encrypted image

vector/src/main/java/im/vector/riotx/features/media/ImageMediaViewerActivity.kt

@@ -91,6 +91,8 @@ class ImageMediaViewerActivity : VectorBaseActivity() {
             encryptedImageView.isVisible = false
             // Postpone transaction a bit until thumbnail is loaded
             supportPostponeEnterTransition()
+
+            // We are not passing the exact same image that in the
             imageContentRenderer.renderFitTarget(mediaData, ImageContentRenderer.Mode.THUMBNAIL, imageTransitionView) {
                 // Proceed with transaction
                 scheduleStartPostponedTransition(imageTransitionView)
@@ -134,13 +136,13 @@ class ImageMediaViewerActivity : VectorBaseActivity() {
 
     private fun onShareActionClicked() {
         session.fileService().downloadFile(
-                FileService.DownloadMode.FOR_EXTERNAL_SHARE,
-                mediaData.eventId,
-                mediaData.filename,
-                mediaData.mimeType,
-                mediaData.url,
-                mediaData.elementToDecrypt,
-                object : MatrixCallback<File> {
+                downloadMode = FileService.DownloadMode.FOR_EXTERNAL_SHARE,
+                id = mediaData.eventId,
+                fileName = mediaData.filename,
+                mimeType = mediaData.mimeType,
+                url = mediaData.url,
+                elementToDecrypt = mediaData.elementToDecrypt,
+                callback = object : MatrixCallback<File> {
                     override fun onSuccess(data: File) {
                         shareMedia(this@ImageMediaViewerActivity, data, getMimeTypeFromUri(this@ImageMediaViewerActivity, data.toUri()))
                     }

vector/src/main/java/im/vector/riotx/features/media/RoomEventsAttachmentProvider.kt

@@ -0,0 +1,175 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.media
+
+import android.content.Context
+import android.view.View
+import androidx.core.view.isVisible
+import im.vector.matrix.android.api.MatrixCallback
+import im.vector.matrix.android.api.session.Session
+import im.vector.matrix.android.api.session.events.model.isVideoMessage
+import im.vector.matrix.android.api.session.events.model.toModel
+import im.vector.matrix.android.api.session.file.FileService
+import im.vector.matrix.android.api.session.room.Room
+import im.vector.matrix.android.api.session.room.model.message.MessageContent
+import im.vector.matrix.android.api.session.room.model.message.MessageImageContent
+import im.vector.matrix.android.api.session.room.model.message.MessageVideoContent
+import im.vector.matrix.android.api.session.room.model.message.MessageWithAttachmentContent
+import im.vector.matrix.android.api.session.room.model.message.getFileUrl
+import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
+import im.vector.matrix.android.internal.crypto.attachments.toElementToDecrypt
+import im.vector.riotx.attachmentviewer.AttachmentInfo
+import im.vector.riotx.core.date.VectorDateFormatter
+import im.vector.riotx.core.extensions.localDateTime
+import java.io.File
+import javax.inject.Inject
+
+class RoomEventsAttachmentProvider(
+        private val attachments: List<TimelineEvent>,
+        private val initialIndex: Int,
+        imageContentRenderer: ImageContentRenderer,
+        private val dateFormatter: VectorDateFormatter,
+        fileService: FileService
+) : BaseAttachmentProvider(imageContentRenderer, fileService) {
+
+    override fun getItemCount(): Int {
+        return attachments.size
+    }
+
+    override fun getAttachmentInfoAt(position: Int): AttachmentInfo {
+        return attachments[position].let {
+            val content = it.root.getClearContent().toModel<MessageContent>() as? MessageWithAttachmentContent
+            if (content is MessageImageContent) {
+                val data = ImageContentRenderer.Data(
+                        eventId = it.eventId,
+                        filename = content.body,
+                        mimeType = content.mimeType,
+                        url = content.getFileUrl(),
+                        elementToDecrypt = content.encryptedFileInfo?.toElementToDecrypt(),
+                        maxHeight = -1,
+                        maxWidth = -1,
+                        width = null,
+                        height = null
+                )
+                if (content.mimeType == "image/gif") {
+                    AttachmentInfo.AnimatedImage(
+                            uid = it.eventId,
+                            url = content.url ?: "",
+                            data = data
+                    )
+                } else {
+                    AttachmentInfo.Image(
+                            uid = it.eventId,
+                            url = content.url ?: "",
+                            data = data
+                    )
+                }
+            } else if (content is MessageVideoContent) {
+                val thumbnailData = ImageContentRenderer.Data(
+                        eventId = it.eventId,
+                        filename = content.body,
+                        mimeType = content.mimeType,
+                        url = content.videoInfo?.thumbnailFile?.url
+                                ?: content.videoInfo?.thumbnailUrl,
+                        elementToDecrypt = content.videoInfo?.thumbnailFile?.toElementToDecrypt(),
+                        height = content.videoInfo?.height,
+                        maxHeight = -1,
+                        width = content.videoInfo?.width,
+                        maxWidth = -1
+                )
+                val data = VideoContentRenderer.Data(
+                        eventId = it.eventId,
+                        filename = content.body,
+                        mimeType = content.mimeType,
+                        url = content.getFileUrl(),
+                        elementToDecrypt = content.encryptedFileInfo?.toElementToDecrypt(),
+                        thumbnailMediaData = thumbnailData
+                )
+                AttachmentInfo.Video(
+                        uid = it.eventId,
+                        url = content.getFileUrl() ?: "",
+                        data = data,
+                        thumbnail = AttachmentInfo.Image(
+                                uid = it.eventId,
+                                url = content.videoInfo?.thumbnailFile?.url
+                                        ?: content.videoInfo?.thumbnailUrl ?: "",
+                                data = thumbnailData
+
+                        )
+                )
+            } else {
+                AttachmentInfo.Image(
+                        uid = it.eventId,
+                        url = "",
+                        data = null
+                )
+            }
+        }
+    }
+
+    override fun overlayViewAtPosition(context: Context, position: Int): View? {
+        super.overlayViewAtPosition(context, position)
+        val item = attachments[position]
+        val dateString = item.root.localDateTime().let {
+            "${dateFormatter.formatMessageDay(it)} at ${dateFormatter.formatMessageHour(it)} "
+        }
+        overlayView?.updateWith("${position + 1} of ${attachments.size}", "${item.senderInfo.displayName} $dateString")
+        overlayView?.videoControlsGroup?.isVisible = item.root.isVideoMessage()
+        return overlayView
+    }
+
+    override fun getFileForSharing(position: Int, callback: (File?) -> Unit) {
+        attachments[position].let { timelineEvent ->
+
+            val messageContent = timelineEvent.root.getClearContent().toModel<MessageContent>()
+                    as? MessageWithAttachmentContent
+                    ?: return@let
+            fileService.downloadFile(
+                    downloadMode = FileService.DownloadMode.FOR_EXTERNAL_SHARE,
+                    id = timelineEvent.eventId,
+                    fileName = messageContent.body,
+                    mimeType = messageContent.mimeType,
+                    url = messageContent.getFileUrl(),
+                    elementToDecrypt = messageContent.encryptedFileInfo?.toElementToDecrypt(),
+                    callback = object : MatrixCallback<File> {
+                        override fun onSuccess(data: File) {
+                           callback(data)
+                        }
+
+                        override fun onFailure(failure: Throwable) {
+                            callback(null)
+                        }
+                    }
+            )
+        }
+    }
+}
+
+class AttachmentProviderFactory @Inject constructor(
+        private val imageContentRenderer: ImageContentRenderer,
+        private val vectorDateFormatter: VectorDateFormatter,
+        private val session: Session
+) {
+
+    fun createProvider(attachments: List<TimelineEvent>, initialIndex: Int): RoomEventsAttachmentProvider {
+        return RoomEventsAttachmentProvider(attachments, initialIndex, imageContentRenderer, vectorDateFormatter, session.fileService())
+    }
+
+    fun createProvider(attachments: List<AttachmentData>, room: Room?, initialIndex: Int): DataAttachmentRoomProvider {
+        return DataAttachmentRoomProvider(attachments, room, initialIndex, imageContentRenderer, vectorDateFormatter, session.fileService())
+    }
+}

vector/src/main/java/im/vector/riotx/features/media/VectorAttachmentViewerActivity.kt

@@ -0,0 +1,277 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package im.vector.riotx.features.media
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.os.Parcelable
+import android.view.View
+import android.view.ViewTreeObserver
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
+import androidx.core.net.toUri
+import androidx.core.transition.addListener
+import androidx.core.view.ViewCompat
+import androidx.core.view.isInvisible
+import androidx.core.view.isVisible
+import androidx.lifecycle.Lifecycle
+import androidx.transition.Transition
+import im.vector.riotx.R
+import im.vector.riotx.attachmentviewer.AttachmentCommands
+import im.vector.riotx.attachmentviewer.AttachmentViewerActivity
+import im.vector.riotx.core.di.ActiveSessionHolder
+import im.vector.riotx.core.di.DaggerScreenComponent
+import im.vector.riotx.core.di.HasVectorInjector
+import im.vector.riotx.core.di.ScreenComponent
+import im.vector.riotx.core.di.VectorComponent
+import im.vector.riotx.core.intent.getMimeTypeFromUri
+import im.vector.riotx.core.utils.shareMedia
+import im.vector.riotx.features.themes.ActivityOtherThemes
+import im.vector.riotx.features.themes.ThemeUtils
+import kotlinx.android.parcel.Parcelize
+import timber.log.Timber
+import javax.inject.Inject
+import kotlin.system.measureTimeMillis
+
+class VectorAttachmentViewerActivity : AttachmentViewerActivity(), BaseAttachmentProvider.InteractionListener {
+
+    @Parcelize
+    data class Args(
+            val roomId: String?,
+            val eventId: String,
+            val sharedTransitionName: String?
+    ) : Parcelable
+
+    @Inject
+    lateinit var sessionHolder: ActiveSessionHolder
+
+    @Inject
+    lateinit var dataSourceFactory: AttachmentProviderFactory
+
+    @Inject
+    lateinit var imageContentRenderer: ImageContentRenderer
+
+    private lateinit var screenComponent: ScreenComponent
+
+    private var initialIndex = 0
+    private var isAnimatingOut = false
+
+    var currentSourceProvider: BaseAttachmentProvider? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        Timber.i("onCreate Activity ${this.javaClass.simpleName}")
+        val vectorComponent = getVectorComponent()
+        screenComponent = DaggerScreenComponent.factory().create(vectorComponent, this)
+        val timeForInjection = measureTimeMillis {
+            screenComponent.inject(this)
+        }
+        Timber.v("Injecting dependencies into ${javaClass.simpleName} took $timeForInjection ms")
+        ThemeUtils.setActivityTheme(this, getOtherThemes())
+
+        val args = args() ?: throw IllegalArgumentException("Missing arguments")
+
+        if (savedInstanceState == null && addTransitionListener()) {
+            args.sharedTransitionName?.let {
+                ViewCompat.setTransitionName(imageTransitionView, it)
+                transitionImageContainer.isVisible = true
+
+                // Postpone transaction a bit until thumbnail is loaded
+                val mediaData: Parcelable? = intent.getParcelableExtra(EXTRA_IMAGE_DATA)
+                if (mediaData is ImageContentRenderer.Data) {
+                    // will be shown at end of transition
+                    pager2.isInvisible = true
+                    supportPostponeEnterTransition()
+                    imageContentRenderer.renderThumbnailDontTransform(mediaData, imageTransitionView) {
+                        // Proceed with transaction
+                        scheduleStartPostponedTransition(imageTransitionView)
+                    }
+                } else if (mediaData is VideoContentRenderer.Data) {
+                    // will be shown at end of transition
+                    pager2.isInvisible = true
+                    supportPostponeEnterTransition()
+                    imageContentRenderer.renderThumbnailDontTransform(mediaData.thumbnailMediaData, imageTransitionView) {
+                        // Proceed with transaction
+                        scheduleStartPostponedTransition(imageTransitionView)
+                    }
+                }
+            }
+        }
+
+        val session = sessionHolder.getSafeActiveSession() ?: return Unit.also { finish() }
+
+        val room = args.roomId?.let { session.getRoom(it) }
+
+        val inMemoryData = intent.getParcelableArrayListExtra<AttachmentData>(EXTRA_IN_MEMORY_DATA)
+        if (inMemoryData != null) {
+            val sourceProvider = dataSourceFactory.createProvider(inMemoryData, room, initialIndex)
+            val index = inMemoryData.indexOfFirst { it.eventId == args.eventId }
+            initialIndex = index
+            sourceProvider.interactionListener = this
+            setSourceProvider(sourceProvider)
+            this.currentSourceProvider = sourceProvider
+            if (savedInstanceState == null) {
+                pager2.setCurrentItem(index, false)
+                // The page change listener is not notified of the change...
+                pager2.post {
+                    onSelectedPositionChanged(index)
+                }
+            }
+        } else {
+            val events = room?.getAttachmentMessages()
+                    ?: emptyList()
+            val index = events.indexOfFirst { it.eventId == args.eventId }
+            initialIndex = index
+
+            val sourceProvider = dataSourceFactory.createProvider(events, index)
+            sourceProvider.interactionListener = this
+            setSourceProvider(sourceProvider)
+            this.currentSourceProvider = sourceProvider
+            if (savedInstanceState == null) {
+                pager2.setCurrentItem(index, false)
+                // The page change listener is not notified of the change...
+                pager2.post {
+                    onSelectedPositionChanged(index)
+                }
+            }
+        }
+
+        window.statusBarColor = ContextCompat.getColor(this, R.color.black_alpha)
+        window.navigationBarColor = ContextCompat.getColor(this, R.color.black_alpha)
+    }
+
+    private fun getOtherThemes() = ActivityOtherThemes.VectorAttachmentsPreview
+
+    override fun shouldAnimateDismiss(): Boolean {
+        return currentPosition != initialIndex
+    }
+
+    override fun onBackPressed() {
+        if (currentPosition == initialIndex) {
+            // show back the transition view
+            // TODO, we should track and update the mapping
+            transitionImageContainer.isVisible = true
+        }
+        isAnimatingOut = true
+        super.onBackPressed()
+    }
+
+    override fun animateClose() {
+        if (currentPosition == initialIndex) {
+            // show back the transition view
+            // TODO, we should track and update the mapping
+            transitionImageContainer.isVisible = true
+        }
+        isAnimatingOut = true
+        ActivityCompat.finishAfterTransition(this)
+    }
+
+    // ==========================================================================================
+    // PRIVATE METHODS
+    // ==========================================================================================
+
+    /**
+     * Try and add a [Transition.TransitionListener] to the entering shared element
+     * [Transition]. We do this so that we can load the full-size image after the transition
+     * has completed.
+     *
+     * @return true if we were successful in adding a listener to the enter transition
+     */
+    private fun addTransitionListener(): Boolean {
+        val transition = window.sharedElementEnterTransition
+
+        if (transition != null) {
+            // There is an entering shared element transition so add a listener to it
+            transition.addListener(
+                    onEnd = {
+                        // The listener is also called when we are exiting
+                        // so we use a boolean to avoid reshowing pager at end of dismiss transition
+                        if (!isAnimatingOut) {
+                            transitionImageContainer.isVisible = false
+                            pager2.isInvisible = false
+                        }
+                    },
+                    onCancel = {
+                        if (!isAnimatingOut) {
+                            transitionImageContainer.isVisible = false
+                            pager2.isInvisible = false
+                        }
+                    }
+            )
+            return true
+        }
+
+        // If we reach here then we have not added a listener
+        return false
+    }
+
+    private fun args() = intent.getParcelableExtra<Args>(EXTRA_ARGS)
+
+    private fun getVectorComponent(): VectorComponent {
+        return (application as HasVectorInjector).injector()
+    }
+
+    private fun scheduleStartPostponedTransition(sharedElement: View) {
+        sharedElement.viewTreeObserver.addOnPreDrawListener(
+                object : ViewTreeObserver.OnPreDrawListener {
+                    override fun onPreDraw(): Boolean {
+                        sharedElement.viewTreeObserver.removeOnPreDrawListener(this)
+                        supportStartPostponedEnterTransition()
+                        return true
+                    }
+                })
+    }
+
+    companion object {
+        const val EXTRA_ARGS = "EXTRA_ARGS"
+        const val EXTRA_IMAGE_DATA = "EXTRA_IMAGE_DATA"
+        const val EXTRA_IN_MEMORY_DATA = "EXTRA_IN_MEMORY_DATA"
+
+        fun newIntent(context: Context,
+                      mediaData: AttachmentData,
+                      roomId: String?,
+                      eventId: String,
+                      inMemoryData: List<AttachmentData>,
+                      sharedTransitionName: String?) = Intent(context, VectorAttachmentViewerActivity::class.java).also {
+            it.putExtra(EXTRA_ARGS, Args(roomId, eventId, sharedTransitionName))
+            it.putExtra(EXTRA_IMAGE_DATA, mediaData)
+            if (inMemoryData.isNotEmpty()) {
+                it.putParcelableArrayListExtra(EXTRA_IN_MEMORY_DATA, ArrayList(inMemoryData))
+            }
+        }
+    }
+
+    override fun onDismissTapped() {
+        animateClose()
+    }
+
+    override fun onPlayPause(play: Boolean) {
+        handle(if (play) AttachmentCommands.StartVideo else AttachmentCommands.PauseVideo)
+    }
+
+    override fun videoSeekTo(percent: Int) {
+        handle(AttachmentCommands.SeekTo(percent))
+    }
+
+    override fun onShareTapped() {
+        this.currentSourceProvider?.getFileForSharing(currentPosition) { data ->
+            if (data != null && lifecycle.currentState.isAtLeast(Lifecycle.State.RESUMED)) {
+                shareMedia(this@VectorAttachmentViewerActivity, data, getMimeTypeFromUri(this@VectorAttachmentViewerActivity, data.toUri()))
+            }
+        }
+    }
+}

vector/src/main/java/im/vector/riotx/features/media/VideoContentRenderer.kt

@@ -16,7 +16,6 @@
 
 package im.vector.riotx.features.media
 
-import android.os.Parcelable
 import android.widget.ImageView
 import android.widget.ProgressBar
 import android.widget.TextView
@@ -38,13 +37,13 @@ class VideoContentRenderer @Inject constructor(private val activeSessionHolder:
 
     @Parcelize
     data class Data(
-            val eventId: String,
-            val filename: String,
-            val mimeType: String?,
-            val url: String?,
-            val elementToDecrypt: ElementToDecrypt?,
+            override val eventId: String,
+            override val filename: String,
+            override val mimeType: String?,
+            override val url: String?,
+            override val elementToDecrypt: ElementToDecrypt?,
             val thumbnailMediaData: ImageContentRenderer.Data
-    ) : Parcelable
+    ) : AttachmentData
 
     fun render(data: Data,
                thumbnailView: ImageView,
@@ -70,7 +69,7 @@ class VideoContentRenderer @Inject constructor(private val activeSessionHolder:
                                 downloadMode = FileService.DownloadMode.FOR_INTERNAL_USE,
                                 id = data.eventId,
                                 fileName = data.filename,
-                                mimeType = null,
+                                mimeType = data.mimeType,
                                 url = data.url,
                                 elementToDecrypt = data.elementToDecrypt,
                                 callback = object : MatrixCallback<File> {

vector/src/main/java/im/vector/riotx/features/media/VideoMediaViewerActivity.kt

@@ -79,13 +79,13 @@ class VideoMediaViewerActivity : VectorBaseActivity() {
 
     private fun onShareActionClicked() {
         session.fileService().downloadFile(
-                FileService.DownloadMode.FOR_EXTERNAL_SHARE,
-                mediaData.eventId,
-                mediaData.filename,
-                mediaData.mimeType,
-                mediaData.url,
-                mediaData.elementToDecrypt,
-                object : MatrixCallback<File> {
+                downloadMode = FileService.DownloadMode.FOR_EXTERNAL_SHARE,
+                id = mediaData.eventId,
+                fileName = mediaData.filename,
+                mimeType = mediaData.mimeType,
+                url = mediaData.url,
+                elementToDecrypt = mediaData.elementToDecrypt,
+                callback = object : MatrixCallback<File> {
                     override fun onSuccess(data: File) {
                         shareMedia(this@VideoMediaViewerActivity, data, getMimeTypeFromUri(this@VideoMediaViewerActivity, data.toUri()))
                     }

vector/src/main/java/im/vector/riotx/features/navigation/DefaultNavigator.kt

@@ -19,7 +19,6 @@ package im.vector.riotx.features.navigation
 import android.app.Activity
 import android.content.Context
 import android.content.Intent
-import android.os.Build
 import android.view.View
 import android.view.Window
 import androidx.core.app.ActivityOptionsCompat
@@ -50,11 +49,9 @@ import im.vector.riotx.features.home.room.detail.RoomDetailArgs
 import im.vector.riotx.features.home.room.detail.widget.WidgetRequestCodes
 import im.vector.riotx.features.home.room.filtered.FilteredRoomsActivity
 import im.vector.riotx.features.invite.InviteUsersToRoomActivity
+import im.vector.riotx.features.media.AttachmentData
 import im.vector.riotx.features.media.BigImageViewerActivity
-import im.vector.riotx.features.media.ImageContentRenderer
-import im.vector.riotx.features.media.ImageMediaViewerActivity
-import im.vector.riotx.features.media.VideoContentRenderer
-import im.vector.riotx.features.media.VideoMediaViewerActivity
+import im.vector.riotx.features.media.VectorAttachmentViewerActivity
 import im.vector.riotx.features.roomdirectory.RoomDirectoryActivity
 import im.vector.riotx.features.roomdirectory.createroom.CreateRoomActivity
 import im.vector.riotx.features.roomdirectory.roompreview.RoomPreviewActivity
@@ -90,7 +87,8 @@ class DefaultNavigator @Inject constructor(
 
     override fun performDeviceVerification(context: Context, otherUserId: String, sasTransactionId: String) {
         val session = sessionHolder.getSafeActiveSession() ?: return
-        val tx = session.cryptoService().verificationService().getExistingTransaction(otherUserId, sasTransactionId) ?: return
+        val tx = session.cryptoService().verificationService().getExistingTransaction(otherUserId, sasTransactionId)
+                ?: return
         (tx as? IncomingSasVerificationTransaction)?.performAccept()
         if (context is VectorBaseActivity) {
             VerificationBottomSheet.withArgs(
@@ -117,6 +115,27 @@ class DefaultNavigator @Inject constructor(
         }
     }
 
+    override fun requestSelfSessionVerification(context: Context) {
+        val session = sessionHolder.getSafeActiveSession() ?: return
+        val otherSessions = session.cryptoService()
+                .getCryptoDeviceInfo(session.myUserId)
+                .filter { it.deviceId != session.sessionParams.deviceId }
+                .map { it.deviceId }
+        if (context is VectorBaseActivity) {
+            if (otherSessions.isNotEmpty()) {
+                val pr = session.cryptoService().verificationService().requestKeyVerification(
+                        supportedVerificationMethodsProvider.provide(),
+                        session.myUserId,
+                        otherSessions)
+                VerificationBottomSheet.forSelfVerification(session, pr.transactionId ?: pr.localId)
+                        .show(context.supportFragmentManager, VerificationBottomSheet.WAITING_SELF_VERIF_TAG)
+            } else {
+                VerificationBottomSheet.forSelfVerification(session)
+                        .show(context.supportFragmentManager, VerificationBottomSheet.WAITING_SELF_VERIF_TAG)
+            }
+        }
+    }
+
     override fun waitSessionVerification(context: Context) {
         val session = sessionHolder.getSafeActiveSession() ?: return
         if (context is VectorBaseActivity) {
@@ -200,7 +219,14 @@ class DefaultNavigator @Inject constructor(
     }
 
     override fun openKeysBackupSetup(context: Context, showManualExport: Boolean) {
-        context.startActivity(KeysBackupSetupActivity.intent(context, showManualExport))
+        // if cross signing is enabled we should propose full 4S
+        sessionHolder.getSafeActiveSession()?.let { session ->
+            if (session.cryptoService().crossSigningService().canCrossSign() && context is VectorBaseActivity) {
+                BootstrapBottomSheet.show(context.supportFragmentManager, false)
+            } else {
+                context.startActivity(KeysBackupSetupActivity.intent(context, showManualExport))
+            }
+        }
     }
 
     override fun openKeysBackupManager(context: Context) {
@@ -217,7 +243,8 @@ class DefaultNavigator @Inject constructor(
                 ?.let { avatarUrl ->
                     val intent = BigImageViewerActivity.newIntent(activity, matrixItem.getBestName(), avatarUrl)
                     val options = sharedElement?.let {
-                        ActivityOptionsCompat.makeSceneTransitionAnimation(activity, it, ViewCompat.getTransitionName(it) ?: "")
+                        ActivityOptionsCompat.makeSceneTransitionAnimation(activity, it, ViewCompat.getTransitionName(it)
+                                ?: "")
                     }
                     activity.startActivity(intent, options?.toBundle())
                 }
@@ -245,27 +272,32 @@ class DefaultNavigator @Inject constructor(
         context.startActivity(WidgetActivity.newIntent(context, widgetArgs))
     }
 
-    override fun openImageViewer(activity: Activity, mediaData: ImageContentRenderer.Data, view: View, options: ((MutableList<Pair<View, String>>) -> Unit)?) {
-        val intent = ImageMediaViewerActivity.newIntent(activity, mediaData, ViewCompat.getTransitionName(view))
-        val pairs = ArrayList<Pair<View, String>>()
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+    override fun openMediaViewer(activity: Activity,
+                                 roomId: String,
+                                 mediaData: AttachmentData,
+                                 view: View,
+                                 inMemory: List<AttachmentData>,
+                                 options: ((MutableList<Pair<View, String>>) -> Unit)?) {
+        VectorAttachmentViewerActivity.newIntent(activity,
+                mediaData,
+                roomId,
+                mediaData.eventId,
+                inMemory,
+                ViewCompat.getTransitionName(view)).let { intent ->
+            val pairs = ArrayList<Pair<View, String>>()
             activity.window.decorView.findViewById<View>(android.R.id.statusBarBackground)?.let {
                 pairs.add(Pair(it, Window.STATUS_BAR_BACKGROUND_TRANSITION_NAME))
             }
             activity.window.decorView.findViewById<View>(android.R.id.navigationBarBackground)?.let {
                 pairs.add(Pair(it, Window.NAVIGATION_BAR_BACKGROUND_TRANSITION_NAME))
             }
+
+            pairs.add(Pair(view, ViewCompat.getTransitionName(view) ?: ""))
+            options?.invoke(pairs)
+
+            val bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(activity, *pairs.toTypedArray()).toBundle()
+            activity.startActivity(intent, bundle)
         }
-        pairs.add(Pair(view, ViewCompat.getTransitionName(view) ?: ""))
-        options?.invoke(pairs)
-
-        val bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(activity, *pairs.toTypedArray()).toBundle()
-        activity.startActivity(intent, bundle)
-    }
-
-    override fun openVideoViewer(activity: Activity, mediaData: VideoContentRenderer.Data) {
-        val intent = VideoMediaViewerActivity.newIntent(activity, mediaData)
-        activity.startActivity(intent)
     }
 
     private fun startActivity(context: Context, intent: Intent, buildTask: Boolean) {

vector/src/main/java/im/vector/riotx/features/navigation/Navigator.kt

@@ -24,11 +24,10 @@ import androidx.fragment.app.Fragment
 import im.vector.matrix.android.api.session.room.model.roomdirectory.PublicRoom
 import im.vector.matrix.android.api.session.room.model.thirdparty.RoomDirectoryData
 import im.vector.matrix.android.api.session.terms.TermsService
-import im.vector.matrix.android.api.util.MatrixItem
 import im.vector.matrix.android.api.session.widgets.model.Widget
+import im.vector.matrix.android.api.util.MatrixItem
 import im.vector.riotx.features.home.room.detail.widget.WidgetRequestCodes
-import im.vector.riotx.features.media.ImageContentRenderer
-import im.vector.riotx.features.media.VideoContentRenderer
+import im.vector.riotx.features.media.AttachmentData
 import im.vector.riotx.features.settings.VectorSettingsActivity
 import im.vector.riotx.features.share.SharedData
 import im.vector.riotx.features.terms.ReviewTermsActivity
@@ -41,6 +40,8 @@ interface Navigator {
 
     fun requestSessionVerification(context: Context, otherSessionId: String)
 
+    fun requestSelfSessionVerification(context: Context)
+
     fun waitSessionVerification(context: Context)
 
     fun upgradeSessionSecurity(context: Context, initCrossSigningOnly: Boolean)
@@ -92,7 +93,10 @@ interface Navigator {
 
     fun openRoomWidget(context: Context, roomId: String, widget: Widget)
 
-    fun openImageViewer(activity: Activity, mediaData: ImageContentRenderer.Data, view: View, options: ((MutableList<Pair<View, String>>) -> Unit)?)
-
-    fun openVideoViewer(activity: Activity, mediaData: VideoContentRenderer.Data)
+    fun openMediaViewer(activity: Activity,
+                        roomId: String,
+                        mediaData: AttachmentData,
+                        view: View,
+                        inMemory: List<AttachmentData> = emptyList(),
+                        options: ((MutableList<Pair<View, String>>) -> Unit)?)
 }

vector/src/main/java/im/vector/riotx/features/notifications/NotificationDrawerManager.kt

@@ -22,10 +22,11 @@ import android.os.HandlerThread
 import androidx.annotation.WorkerThread
 import androidx.core.app.NotificationCompat
 import androidx.core.app.Person
+import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.content.ContentUrlResolver
+import im.vector.riotx.ActiveSessionDataSource
 import im.vector.riotx.BuildConfig
 import im.vector.riotx.R
-import im.vector.riotx.core.di.ActiveSessionHolder
 import im.vector.riotx.core.resources.StringProvider
 import im.vector.riotx.features.settings.VectorPreferences
 import me.gujun.android.span.span
@@ -46,7 +47,7 @@ class NotificationDrawerManager @Inject constructor(private val context: Context
                                                     private val notificationUtils: NotificationUtils,
                                                     private val vectorPreferences: VectorPreferences,
                                                     private val stringProvider: StringProvider,
-                                                    private val activeSessionHolder: ActiveSessionHolder,
+                                                    private val activeSessionDataSource: ActiveSessionDataSource,
                                                     private val iconLoader: IconLoader,
                                                     private val bitmapLoader: BitmapLoader,
                                                     private val outdatedDetector: OutdatedEventDetector?) {
@@ -68,6 +69,10 @@ class NotificationDrawerManager @Inject constructor(private val context: Context
 
     private var currentRoomId: String? = null
 
+    // TODO Multi-session: this will have to be improved
+    private val currentSession: Session?
+        get() = activeSessionDataSource.currentValue?.orNull()
+
     /**
     Should be called as soon as a new event is ready to be displayed.
     The notification corresponding to this event will not be displayed until
@@ -204,7 +209,7 @@ class NotificationDrawerManager @Inject constructor(private val context: Context
     private fun refreshNotificationDrawerBg() {
         Timber.v("refreshNotificationDrawerBg()")
 
-        val session = activeSessionHolder.getSafeActiveSession() ?: return
+        val session = currentSession ?: return
 
         val user = session.getUser(session.myUserId)
         // myUserDisplayName cannot be empty else NotificationCompat.MessagingStyle() will crash
@@ -474,7 +479,7 @@ class NotificationDrawerManager @Inject constructor(private val context: Context
                 val file = File(context.applicationContext.cacheDir, ROOMS_NOTIFICATIONS_FILE_NAME)
                 if (!file.exists()) file.createNewFile()
                 FileOutputStream(file).use {
-                    activeSessionHolder.getSafeActiveSession()?.securelyStoreObject(eventList, KEY_ALIAS_SECRET_STORAGE, it)
+                    currentSession?.securelyStoreObject(eventList, KEY_ALIAS_SECRET_STORAGE, it)
                 }
             } catch (e: Throwable) {
                 Timber.e(e, "## Failed to save cached notification info")
@@ -487,7 +492,7 @@ class NotificationDrawerManager @Inject constructor(private val context: Context
             val file = File(context.applicationContext.cacheDir, ROOMS_NOTIFICATIONS_FILE_NAME)
             if (file.exists()) {
                 FileInputStream(file).use {
-                    val events: ArrayList<NotifiableEvent>? = activeSessionHolder.getSafeActiveSession()?.loadSecureSecret(it, KEY_ALIAS_SECRET_STORAGE)
+                    val events: ArrayList<NotifiableEvent>? = currentSession?.loadSecureSecret(it, KEY_ALIAS_SECRET_STORAGE)
                     if (events != null) {
                         return events.toMutableList()
                     }

vector/src/main/java/im/vector/riotx/features/notifications/OutdatedEventDetector.kt

@@ -15,10 +15,12 @@
  */
 package im.vector.riotx.features.notifications
 
-import im.vector.riotx.core.di.ActiveSessionHolder
+import im.vector.riotx.ActiveSessionDataSource
 import javax.inject.Inject
 
-class OutdatedEventDetector @Inject constructor(private val activeSessionHolder: ActiveSessionHolder) {
+class OutdatedEventDetector @Inject constructor(
+        private val activeSessionDataSource: ActiveSessionDataSource
+) {
 
     /**
      * Returns true if the given event is outdated.
@@ -26,10 +28,12 @@ class OutdatedEventDetector @Inject constructor(private val activeSessionHolder:
      * other device.
      */
     fun isMessageOutdated(notifiableEvent: NotifiableEvent): Boolean {
+        val session = activeSessionDataSource.currentValue?.orNull() ?: return false
+
         if (notifiableEvent is NotifiableMessageEvent) {
             val eventID = notifiableEvent.eventId
             val roomID = notifiableEvent.roomId
-            val room = activeSessionHolder.getSafeActiveSession()?.getRoom(roomID) ?: return false
+            val room = session.getRoom(roomID) ?: return false
             return room.isEventRead(eventID)
         }
         return false

vector/src/main/java/im/vector/riotx/features/notifications/PushRuleTriggerListener.kt

@@ -30,17 +30,17 @@ class PushRuleTriggerListener @Inject constructor(
         private val notificationDrawerManager: NotificationDrawerManager
 ) : PushRuleService.PushRuleListener {
 
-    var session: Session? = null
+    private var session: Session? = null
 
     override fun onMatchRule(event: Event, actions: List<Action>) {
         Timber.v("Push rule match for event ${event.eventId}")
-        if (session == null) {
+        val safeSession = session ?: return Unit.also {
             Timber.e("Called without active session")
-            return
         }
+
         val notificationAction = actions.toNotificationAction()
         if (notificationAction.shouldNotify) {
-            val notifiableEvent = resolver.resolveEvent(event, session!!)
+            val notifiableEvent = resolver.resolveEvent(event, safeSession)
             if (notifiableEvent == null) {
                 Timber.v("## Failed to resolve event")
                 // TODO

vector/src/main/java/im/vector/riotx/features/popup/PopupAlertManager.kt

@@ -26,6 +26,7 @@ import com.tapadoo.alerter.Alerter
 import com.tapadoo.alerter.OnHideAlertListener
 import dagger.Lazy
 import im.vector.riotx.R
+import im.vector.riotx.core.platform.VectorBaseActivity
 import im.vector.riotx.features.home.AvatarRenderer
 import im.vector.riotx.features.themes.ThemeUtils
 import timber.log.Timber
@@ -83,7 +84,7 @@ class PopupAlertManager @Inject constructor(private val avatarRenderer: Lazy<Ava
                 setLightStatusBar()
             }
         }
-        if (currentAlerter?.shouldBeDisplayedIn?.invoke(activity) == false) {
+        if (currentAlerter?.shouldBeDisplayedIn?.invoke(activity) == false || activity !is VectorBaseActivity) {
             return
         }
 

vector/src/main/java/im/vector/riotx/features/reactions/widget/ReactionButton.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 New Vector Ltd
+ * Copyright 2020 New Vector Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,6 +34,7 @@ import android.widget.TextView
 import androidx.annotation.ColorInt
 import androidx.annotation.ColorRes
 import androidx.core.content.ContextCompat
+import androidx.core.content.withStyledAttributes
 import im.vector.riotx.EmojiCompatWrapper
 import im.vector.riotx.R
 import im.vector.riotx.core.di.HasScreenInjector
@@ -44,7 +45,8 @@ import javax.inject.Inject
  * An animated reaction button.
  * Displays a String reaction (emoji), with a count, and that can be selected or not (toggle)
  */
-class ReactionButton @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null,
+class ReactionButton @JvmOverloads constructor(context: Context,
+                                               attrs: AttributeSet? = null,
                                                defStyleAttr: Int = 0)
     : FrameLayout(context, attrs, defStyleAttr), View.OnClickListener, View.OnLongClickListener {
 
@@ -109,42 +111,41 @@ class ReactionButton @JvmOverloads constructor(context: Context, attrs: Attribut
         countTextView?.text = TextUtils.formatCountToShortDecimal(reactionCount)
 
 //        emojiView?.typeface = this.emojiTypeFace ?: Typeface.DEFAULT
+        context.withStyledAttributes(attrs, R.styleable.ReactionButton, defStyleAttr) {
+            onDrawable = ContextCompat.getDrawable(context, R.drawable.rounded_rect_shape)
+            offDrawable = ContextCompat.getDrawable(context, R.drawable.rounded_rect_shape_off)
 
-        val array = context.obtainStyledAttributes(attrs, R.styleable.ReactionButton, defStyleAttr, 0)
+            circleStartColor = getColor(R.styleable.ReactionButton_circle_start_color, 0)
 
-        onDrawable = ContextCompat.getDrawable(context, R.drawable.rounded_rect_shape)
-        offDrawable = ContextCompat.getDrawable(context, R.drawable.rounded_rect_shape_off)
+            if (circleStartColor != 0) {
+                circleView.startColor = circleStartColor
+            }
 
-        circleStartColor = array.getColor(R.styleable.ReactionButton_circle_start_color, 0)
+            circleEndColor = getColor(R.styleable.ReactionButton_circle_end_color, 0)
 
-        if (circleStartColor != 0) {
-            circleView.startColor = circleStartColor
+            if (circleEndColor != 0) {
+                circleView.endColor = circleEndColor
+            }
+
+            dotPrimaryColor = getColor(R.styleable.ReactionButton_dots_primary_color, 0)
+            dotSecondaryColor = getColor(R.styleable.ReactionButton_dots_secondary_color, 0)
+
+            if (dotPrimaryColor != 0 && dotSecondaryColor != 0) {
+                dotsView.setColors(dotPrimaryColor, dotSecondaryColor)
+            }
+
+            getString(R.styleable.ReactionButton_emoji)?.let {
+                reactionString = it
+            }
+
+            reactionCount = getInt(R.styleable.ReactionButton_reaction_count, 0)
+
+            val status = getBoolean(R.styleable.ReactionButton_toggled, false)
+            setChecked(status)
         }
 
-        circleEndColor = array.getColor(R.styleable.ReactionButton_circle_end_color, 0)
-
-        if (circleEndColor != 0) {
-            circleView.endColor = circleEndColor
-        }
-
-        dotPrimaryColor = array.getColor(R.styleable.ReactionButton_dots_primary_color, 0)
-        dotSecondaryColor = array.getColor(R.styleable.ReactionButton_dots_secondary_color, 0)
-
-        if (dotPrimaryColor != 0 && dotSecondaryColor != 0) {
-            dotsView.setColors(dotPrimaryColor, dotSecondaryColor)
-        }
-
-        array.getString(R.styleable.ReactionButton_emoji)?.let {
-            reactionString = it
-        }
-
-        reactionCount = array.getInt(R.styleable.ReactionButton_reaction_count, 0)
-
-        val status = array.getBoolean(R.styleable.ReactionButton_toggled, false)
-        setChecked(status)
         setOnClickListener(this)
         setOnLongClickListener(this)
-        array.recycle()
     }
 
     private fun getDrawableFromResource(array: TypedArray, styleableIndexId: Int): Drawable? {

vector/src/main/java/im/vector/riotx/features/roomprofile/uploads/RoomUploadsViewModel.kt

@@ -158,13 +158,13 @@ class RoomUploadsViewModel @AssistedInject constructor(
             try {
                 val file = awaitCallback<File> {
                     session.fileService().downloadFile(
-                            FileService.DownloadMode.FOR_EXTERNAL_SHARE,
-                            action.uploadEvent.eventId,
-                            action.uploadEvent.contentWithAttachmentContent.body,
-                            action.uploadEvent.contentWithAttachmentContent.getFileUrl(),
-                            action.uploadEvent.contentWithAttachmentContent.mimeType,
-                            action.uploadEvent.contentWithAttachmentContent.encryptedFileInfo?.toElementToDecrypt(),
-                            it)
+                            downloadMode = FileService.DownloadMode.FOR_EXTERNAL_SHARE,
+                            id = action.uploadEvent.eventId,
+                            fileName = action.uploadEvent.contentWithAttachmentContent.body,
+                            mimeType = action.uploadEvent.contentWithAttachmentContent.mimeType,
+                            url = action.uploadEvent.contentWithAttachmentContent.getFileUrl(),
+                            elementToDecrypt = action.uploadEvent.contentWithAttachmentContent.encryptedFileInfo?.toElementToDecrypt(),
+                            callback = it)
                 }
                 _viewEvents.post(RoomUploadsViewEvents.FileReadyForSaving(file, action.uploadEvent.contentWithAttachmentContent.body))
             } catch (failure: Throwable) {

vector/src/main/java/im/vector/riotx/features/roomprofile/uploads/media/RoomUploadsMediaFragment.kt

@@ -20,23 +20,34 @@ import android.os.Bundle
 import android.util.DisplayMetrics
 import android.view.View
 import androidx.core.content.ContextCompat
+import androidx.core.util.Pair
+import androidx.core.view.ViewCompat
 import androidx.recyclerview.widget.GridLayoutManager
 import com.airbnb.mvrx.Fail
 import com.airbnb.mvrx.Loading
 import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
+import com.google.android.material.appbar.AppBarLayout
+import im.vector.matrix.android.api.session.room.model.message.MessageImageContent
+import im.vector.matrix.android.api.session.room.model.message.MessageVideoContent
+import im.vector.matrix.android.api.session.room.model.message.getFileUrl
+import im.vector.matrix.android.internal.crypto.attachments.toElementToDecrypt
 import im.vector.riotx.R
 import im.vector.riotx.core.extensions.cleanup
 import im.vector.riotx.core.extensions.trackItemsVisibilityChange
 import im.vector.riotx.core.platform.StateView
 import im.vector.riotx.core.platform.VectorBaseFragment
 import im.vector.riotx.core.utils.DimensionConverter
+import im.vector.riotx.features.media.AttachmentData
 import im.vector.riotx.features.media.ImageContentRenderer
 import im.vector.riotx.features.media.VideoContentRenderer
 import im.vector.riotx.features.roomprofile.uploads.RoomUploadsAction
+import im.vector.riotx.features.roomprofile.uploads.RoomUploadsFragment
 import im.vector.riotx.features.roomprofile.uploads.RoomUploadsViewModel
+import im.vector.riotx.features.roomprofile.uploads.RoomUploadsViewState
 import kotlinx.android.synthetic.main.fragment_generic_state_view_recycler.*
+import kotlinx.android.synthetic.main.fragment_room_uploads.*
 import javax.inject.Inject
 
 class RoomUploadsMediaFragment @Inject constructor(
@@ -76,12 +87,86 @@ class RoomUploadsMediaFragment @Inject constructor(
         controller.listener = null
     }
 
-    override fun onOpenImageClicked(view: View, mediaData: ImageContentRenderer.Data) {
-        navigator.openImageViewer(requireActivity(), mediaData, view, null)
+    // It's very strange i can't just access
+    // the app bar using find by id...
+    private fun trickFindAppBar(): AppBarLayout? {
+        return activity?.supportFragmentManager?.fragments
+                ?.filterIsInstance<RoomUploadsFragment>()
+                ?.firstOrNull()
+                ?.roomUploadsAppBar
     }
 
-    override fun onOpenVideoClicked(view: View, mediaData: VideoContentRenderer.Data) {
-        navigator.openVideoViewer(requireActivity(), mediaData)
+    override fun onOpenImageClicked(view: View, mediaData: ImageContentRenderer.Data) = withState(uploadsViewModel) { state ->
+        val inMemory = getItemsArgs(state)
+        navigator.openMediaViewer(
+                activity = requireActivity(),
+                roomId = state.roomId,
+                mediaData = mediaData,
+                view = view,
+                inMemory = inMemory
+        ) { pairs ->
+            trickFindAppBar()?.let {
+                pairs.add(Pair(it, ViewCompat.getTransitionName(it) ?: ""))
+            }
+        }
+    }
+
+    private fun getItemsArgs(state: RoomUploadsViewState): List<AttachmentData> {
+        return state.mediaEvents.mapNotNull {
+            when (val content = it.contentWithAttachmentContent) {
+                is MessageImageContent -> {
+                    ImageContentRenderer.Data(
+                            eventId = it.eventId,
+                            filename = content.body,
+                            mimeType = content.mimeType,
+                            url = content.getFileUrl(),
+                            elementToDecrypt = content.encryptedFileInfo?.toElementToDecrypt(),
+                            maxHeight = -1,
+                            maxWidth = -1,
+                            width = null,
+                            height = null
+                    )
+                }
+                is MessageVideoContent -> {
+                    val thumbnailData = ImageContentRenderer.Data(
+                            eventId = it.eventId,
+                            filename = content.body,
+                            mimeType = content.mimeType,
+                            url = content.videoInfo?.thumbnailFile?.url
+                                    ?: content.videoInfo?.thumbnailUrl,
+                            elementToDecrypt = content.videoInfo?.thumbnailFile?.toElementToDecrypt(),
+                            height = content.videoInfo?.height,
+                            maxHeight = -1,
+                            width = content.videoInfo?.width,
+                            maxWidth = -1
+                    )
+                    VideoContentRenderer.Data(
+                            eventId = it.eventId,
+                            filename = content.body,
+                            mimeType = content.mimeType,
+                            url = content.getFileUrl(),
+                            elementToDecrypt = content.encryptedFileInfo?.toElementToDecrypt(),
+                            thumbnailMediaData = thumbnailData
+                    )
+                }
+                else                   -> null
+            }
+        }
+    }
+
+    override fun onOpenVideoClicked(view: View, mediaData: VideoContentRenderer.Data) = withState(uploadsViewModel) { state ->
+        val inMemory = getItemsArgs(state)
+        navigator.openMediaViewer(
+                activity = requireActivity(),
+                roomId = state.roomId,
+                mediaData = mediaData,
+                view = view,
+                inMemory = inMemory
+        ) { pairs ->
+            trickFindAppBar()?.let {
+                pairs.add(Pair(it, ViewCompat.getTransitionName(it) ?: ""))
+            }
+        }
     }
 
     override fun loadMore() {

vector/src/main/java/im/vector/riotx/features/roomprofile/uploads/media/UploadsImageItem.kt

@@ -18,11 +18,13 @@ package im.vector.riotx.features.roomprofile.uploads.media
 
 import android.view.View
 import android.widget.ImageView
+import androidx.core.view.ViewCompat
 import com.airbnb.epoxy.EpoxyAttribute
 import com.airbnb.epoxy.EpoxyModelClass
 import im.vector.riotx.R
 import im.vector.riotx.core.epoxy.VectorEpoxyHolder
 import im.vector.riotx.core.epoxy.VectorEpoxyModel
+import im.vector.riotx.core.utils.DebouncedClickListener
 import im.vector.riotx.features.media.ImageContentRenderer
 
 @EpoxyModelClass(layout = R.layout.item_uploads_image)
@@ -35,8 +37,13 @@ abstract class UploadsImageItem : VectorEpoxyModel<UploadsImageItem.Holder>() {
 
     override fun bind(holder: Holder) {
         super.bind(holder)
-        holder.view.setOnClickListener { listener?.onItemClicked(holder.imageView, data) }
+        holder.view.setOnClickListener(
+                DebouncedClickListener(View.OnClickListener { _ ->
+                    listener?.onItemClicked(holder.imageView, data)
+                })
+        )
         imageContentRenderer.render(data, holder.imageView, IMAGE_SIZE_DP)
+        ViewCompat.setTransitionName(holder.imageView, "imagePreview_${id()}")
     }
 
     class Holder : VectorEpoxyHolder() {

vector/src/main/java/im/vector/riotx/features/roomprofile/uploads/media/UploadsVideoItem.kt

@@ -18,11 +18,13 @@ package im.vector.riotx.features.roomprofile.uploads.media
 
 import android.view.View
 import android.widget.ImageView
+import androidx.core.view.ViewCompat
 import com.airbnb.epoxy.EpoxyAttribute
 import com.airbnb.epoxy.EpoxyModelClass
 import im.vector.riotx.R
 import im.vector.riotx.core.epoxy.VectorEpoxyHolder
 import im.vector.riotx.core.epoxy.VectorEpoxyModel
+import im.vector.riotx.core.utils.DebouncedClickListener
 import im.vector.riotx.features.media.ImageContentRenderer
 import im.vector.riotx.features.media.VideoContentRenderer
 
@@ -36,8 +38,13 @@ abstract class UploadsVideoItem : VectorEpoxyModel<UploadsVideoItem.Holder>() {
 
     override fun bind(holder: Holder) {
         super.bind(holder)
-        holder.view.setOnClickListener { listener?.onItemClicked(holder.imageView, data) }
+        holder.view.setOnClickListener(
+            DebouncedClickListener(View.OnClickListener { _ ->
+                listener?.onItemClicked(holder.imageView, data)
+            })
+        )
         imageContentRenderer.render(data.thumbnailMediaData, holder.imageView, IMAGE_SIZE_DP)
+        ViewCompat.setTransitionName(holder.imageView, "videoPreview_${id()}")
     }
 
     class Holder : VectorEpoxyHolder() {

vector/src/main/java/im/vector/riotx/features/settings/VectorSettingsSecurityPrivacyFragment.kt

@@ -34,16 +34,16 @@ import im.vector.matrix.android.internal.crypto.model.ImportRoomKeysResult
 import im.vector.matrix.android.internal.crypto.model.rest.DeviceInfo
 import im.vector.matrix.android.internal.crypto.model.rest.DevicesListResponse
 import im.vector.riotx.R
+import im.vector.riotx.core.di.ActiveSessionHolder
 import im.vector.riotx.core.dialogs.ExportKeysDialog
+import im.vector.riotx.core.extensions.queryExportKeys
 import im.vector.riotx.core.intent.ExternalIntentData
 import im.vector.riotx.core.intent.analyseIntent
 import im.vector.riotx.core.intent.getFilenameFromUri
 import im.vector.riotx.core.platform.SimpleTextWatcher
 import im.vector.riotx.core.preference.VectorPreference
-import im.vector.riotx.core.utils.PERMISSIONS_FOR_WRITING_FILES
 import im.vector.riotx.core.utils.PERMISSION_REQUEST_CODE_EXPORT_KEYS
 import im.vector.riotx.core.utils.allGranted
-import im.vector.riotx.core.utils.checkPermissions
 import im.vector.riotx.core.utils.openFileSelection
 import im.vector.riotx.core.utils.toast
 import im.vector.riotx.features.crypto.keys.KeysExporter
@@ -52,7 +52,8 @@ import im.vector.riotx.features.crypto.keysbackup.settings.KeysBackupManageActiv
 import javax.inject.Inject
 
 class VectorSettingsSecurityPrivacyFragment @Inject constructor(
-        private val vectorPreferences: VectorPreferences
+        private val vectorPreferences: VectorPreferences,
+        private val activeSessionHolder: ActiveSessionHolder
 ) : VectorSettingsBaseFragment() {
 
     override var titleRes = R.string.settings_security_and_privacy
@@ -119,38 +120,69 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
     }
 
     private fun refreshXSigningStatus() {
-            val xSigningIsEnableInAccount = session.cryptoService().crossSigningService().isCrossSigningInitialized()
-            val xSigningKeysAreTrusted = session.cryptoService().crossSigningService().checkUserTrust(session.myUserId).isVerified()
-            val xSigningKeyCanSign = session.cryptoService().crossSigningService().canCrossSign()
+        val crossSigningKeys = session.cryptoService().crossSigningService().getMyCrossSigningKeys()
+        val xSigningIsEnableInAccount = crossSigningKeys != null
+        val xSigningKeysAreTrusted = session.cryptoService().crossSigningService().checkUserTrust(session.myUserId).isVerified()
+        val xSigningKeyCanSign = session.cryptoService().crossSigningService().canCrossSign()
 
-            if (xSigningKeyCanSign) {
-                mCrossSigningStatePreference.setIcon(R.drawable.ic_shield_trusted)
-                mCrossSigningStatePreference.summary = getString(R.string.encryption_information_dg_xsigning_complete)
-            } else if (xSigningKeysAreTrusted) {
-                mCrossSigningStatePreference.setIcon(R.drawable.ic_shield_custom)
-                mCrossSigningStatePreference.summary = getString(R.string.encryption_information_dg_xsigning_trusted)
-            } else if (xSigningIsEnableInAccount) {
-                mCrossSigningStatePreference.setIcon(R.drawable.ic_shield_black)
-                mCrossSigningStatePreference.summary = getString(R.string.encryption_information_dg_xsigning_not_trusted)
-            } else {
-                mCrossSigningStatePreference.setIcon(android.R.color.transparent)
-                mCrossSigningStatePreference.summary = getString(R.string.encryption_information_dg_xsigning_disabled)
-            }
+        if (xSigningKeyCanSign) {
+            mCrossSigningStatePreference.setIcon(R.drawable.ic_shield_trusted)
+            mCrossSigningStatePreference.summary = getString(R.string.encryption_information_dg_xsigning_complete)
+        } else if (xSigningKeysAreTrusted) {
+            mCrossSigningStatePreference.setIcon(R.drawable.ic_shield_custom)
+            mCrossSigningStatePreference.summary = getString(R.string.encryption_information_dg_xsigning_trusted)
+        } else if (xSigningIsEnableInAccount) {
+            mCrossSigningStatePreference.setIcon(R.drawable.ic_shield_black)
+            mCrossSigningStatePreference.summary = getString(R.string.encryption_information_dg_xsigning_not_trusted)
+        } else {
+            mCrossSigningStatePreference.setIcon(android.R.color.transparent)
+            mCrossSigningStatePreference.summary = getString(R.string.encryption_information_dg_xsigning_disabled)
+        }
 
-            mCrossSigningStatePreference.isVisible = true
+        mCrossSigningStatePreference.isVisible = true
     }
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
         if (allGranted(grantResults)) {
             if (requestCode == PERMISSION_REQUEST_CODE_EXPORT_KEYS) {
-                exportKeys()
+                queryExportKeys(activeSessionHolder.getSafeActiveSession()?.myUserId ?: "", REQUEST_CODE_SAVE_MEGOLM_EXPORT)
             }
         }
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
+        if (requestCode == REQUEST_CODE_SAVE_MEGOLM_EXPORT) {
+            val uri = data?.data
+            if (resultCode == Activity.RESULT_OK && uri != null) {
+                activity?.let { activity ->
+                    ExportKeysDialog().show(activity, object : ExportKeysDialog.ExportKeyDialogListener {
+                        override fun onPassphrase(passphrase: String) {
+                            displayLoadingView()
 
+                            KeysExporter(session)
+                                    .export(requireContext(),
+                                            passphrase,
+                                            uri,
+                                            object : MatrixCallback<Boolean> {
+                                                override fun onSuccess(data: Boolean) {
+                                                    if (data) {
+                                                        requireActivity().toast(getString(R.string.encryption_exported_successfully))
+                                                    } else {
+                                                        requireActivity().toast(getString(R.string.unexpected_error))
+                                                    }
+                                                    hideLoadingView()
+                                                }
+
+                                                override fun onFailure(failure: Throwable) {
+                                                    onCommonDone(failure.localizedMessage)
+                                                }
+                                            })
+                        }
+                    })
+                }
+            }
+        }
         if (resultCode == Activity.RESULT_OK) {
             when (requestCode) {
                 REQUEST_E2E_FILE_REQUEST_CODE -> importKeys(data)
@@ -169,7 +201,7 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
         }
 
         exportPref.onPreferenceClickListener = Preference.OnPreferenceClickListener {
-            exportKeys()
+            queryExportKeys(activeSessionHolder.getSafeActiveSession()?.myUserId ?: "", REQUEST_CODE_SAVE_MEGOLM_EXPORT)
             true
         }
 
@@ -179,46 +211,6 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
         }
     }
 
-    /**
-     * Manage the e2e keys export.
-     */
-    private fun exportKeys() {
-        // We need WRITE_EXTERNAL permission
-        if (checkPermissions(PERMISSIONS_FOR_WRITING_FILES,
-                        this,
-                        PERMISSION_REQUEST_CODE_EXPORT_KEYS,
-                        R.string.permissions_rationale_msg_keys_backup_export)) {
-            activity?.let { activity ->
-                ExportKeysDialog().show(activity, object : ExportKeysDialog.ExportKeyDialogListener {
-                    override fun onPassphrase(passphrase: String) {
-                        displayLoadingView()
-
-                        KeysExporter(session)
-                                .export(requireContext(),
-                                        passphrase,
-                                        object : MatrixCallback<String> {
-                                            override fun onSuccess(data: String) {
-                                                if (isAdded) {
-                                                    hideLoadingView()
-
-                                                    AlertDialog.Builder(activity)
-                                                            .setMessage(getString(R.string.encryption_export_saved_as, data))
-                                                            .setCancelable(false)
-                                                            .setPositiveButton(R.string.ok, null)
-                                                            .show()
-                                                }
-                                            }
-
-                                            override fun onFailure(failure: Throwable) {
-                                                onCommonDone(failure.localizedMessage)
-                                            }
-                                        })
-                    }
-                })
-            }
-        }
-    }
-
     /**
      * Manage the e2e keys import.
      */
@@ -515,6 +507,7 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
 
     companion object {
         private const val REQUEST_E2E_FILE_REQUEST_CODE = 123
+        private const val REQUEST_CODE_SAVE_MEGOLM_EXPORT = 124
 
         private const val PUSHER_PREFERENCE_KEY_BASE = "PUSHER_PREFERENCE_KEY_BASE"
         private const val DEVICES_PREFERENCE_KEY_BASE = "DEVICES_PREFERENCE_KEY_BASE"

vector/src/main/java/im/vector/riotx/features/settings/crosssigning/CrossSigningSettingsFragment.kt

@@ -51,7 +51,7 @@ class CrossSigningSettingsFragment @Inject constructor(
                     Unit
                 }
                 CrossSigningSettingsViewEvents.VerifySession -> {
-                    navigator.waitSessionVerification(requireActivity())
+                    navigator.requestSelfSessionVerification(requireActivity())
                 }
                 CrossSigningSettingsViewEvents.SetUpRecovery -> {
                     navigator.upgradeSessionSecurity(requireActivity(), false)

vector/src/main/java/im/vector/riotx/features/themes/ActivityOtherThemes.kt

@@ -38,4 +38,10 @@ sealed class ActivityOtherThemes(@StyleRes val dark: Int,
             R.style.AppTheme_AttachmentsPreview,
             R.style.AppTheme_AttachmentsPreview
     )
+
+    object VectorAttachmentsPreview : ActivityOtherThemes(
+            R.style.AppTheme_Transparent,
+            R.style.AppTheme_Transparent,
+            R.style.AppTheme_Transparent
+    )
 }

vector/src/main/java/im/vector/riotx/features/workers/signout/ServerBackupStatusViewModel.kt

@@ -0,0 +1,177 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.workers.signout
+
+import androidx.lifecycle.MutableLiveData
+import com.airbnb.mvrx.ActivityViewModelContext
+import com.airbnb.mvrx.Async
+import com.airbnb.mvrx.FragmentViewModelContext
+import com.airbnb.mvrx.MvRxState
+import com.airbnb.mvrx.MvRxViewModelFactory
+import com.airbnb.mvrx.Uninitialized
+import com.airbnb.mvrx.ViewModelContext
+import com.squareup.inject.assisted.Assisted
+import com.squareup.inject.assisted.AssistedInject
+import im.vector.matrix.android.api.session.Session
+import im.vector.matrix.android.api.session.crypto.crosssigning.MASTER_KEY_SSSS_NAME
+import im.vector.matrix.android.api.session.crypto.crosssigning.MXCrossSigningInfo
+import im.vector.matrix.android.api.session.crypto.crosssigning.SELF_SIGNING_KEY_SSSS_NAME
+import im.vector.matrix.android.api.session.crypto.crosssigning.USER_SIGNING_KEY_SSSS_NAME
+import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupState
+import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupStateListener
+import im.vector.matrix.android.api.util.Optional
+import im.vector.matrix.android.internal.crypto.store.PrivateKeysInfo
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountData
+import im.vector.matrix.rx.rx
+import im.vector.riotx.core.platform.EmptyAction
+import im.vector.riotx.core.platform.EmptyViewEvents
+import im.vector.riotx.core.platform.VectorViewModel
+import io.reactivex.Observable
+import io.reactivex.functions.Function4
+import io.reactivex.subjects.PublishSubject
+import java.util.concurrent.TimeUnit
+
+data class ServerBackupStatusViewState(
+        val bannerState: Async<BannerState> = Uninitialized
+) : MvRxState
+
+/**
+ * The state representing the view
+ * It can take one state at a time
+ */
+sealed class BannerState {
+
+    object Hidden : BannerState()
+
+    // Keys backup is not setup, numberOfKeys is the number of locally stored keys
+    data class Setup(val numberOfKeys: Int) : BannerState()
+
+    // Keys are backing up
+    object BackingUp : BannerState()
+}
+
+class ServerBackupStatusViewModel @AssistedInject constructor(@Assisted initialState: ServerBackupStatusViewState,
+                                                              private val session: Session)
+    : VectorViewModel<ServerBackupStatusViewState, EmptyAction, EmptyViewEvents>(initialState), KeysBackupStateListener {
+
+    @AssistedInject.Factory
+    interface Factory {
+        fun create(initialState: ServerBackupStatusViewState): ServerBackupStatusViewModel
+    }
+
+    companion object : MvRxViewModelFactory<ServerBackupStatusViewModel, ServerBackupStatusViewState> {
+
+        @JvmStatic
+        override fun create(viewModelContext: ViewModelContext, state: ServerBackupStatusViewState): ServerBackupStatusViewModel? {
+            val factory = when (viewModelContext) {
+                is FragmentViewModelContext -> viewModelContext.fragment as? Factory
+                is ActivityViewModelContext -> viewModelContext.activity as? Factory
+            }
+            return factory?.create(state) ?: error("You should let your activity/fragment implements Factory interface")
+        }
+    }
+
+    // Keys exported manually
+    val keysExportedToFile = MutableLiveData<Boolean>()
+    val keysBackupState = MutableLiveData<KeysBackupState>()
+
+    private val keyBackupPublishSubject: PublishSubject<KeysBackupState> = PublishSubject.create()
+
+    init {
+        session.cryptoService().keysBackupService().addListener(this)
+
+        keysBackupState.value = session.cryptoService().keysBackupService().state
+
+        Observable.combineLatest<List<UserAccountData>, Optional<MXCrossSigningInfo>, KeysBackupState, Optional<PrivateKeysInfo>, BannerState>(
+                session.rx().liveAccountData(setOf(MASTER_KEY_SSSS_NAME, USER_SIGNING_KEY_SSSS_NAME, SELF_SIGNING_KEY_SSSS_NAME)),
+                session.rx().liveCrossSigningInfo(session.myUserId),
+                keyBackupPublishSubject,
+                session.rx().liveCrossSigningPrivateKeys(),
+                Function4 { _, crossSigningInfo, keyBackupState, pInfo ->
+                    // first check if 4S is already setup
+                    if (session.sharedSecretStorageService.isRecoverySetup()) {
+                        // 4S is already setup sp we should not display anything
+                        return@Function4 when (keyBackupState) {
+                            KeysBackupState.BackingUp -> BannerState.BackingUp
+                            else                      -> BannerState.Hidden
+                        }
+                    }
+
+                    // So recovery is not setup
+                    // Check if cross signing is enabled and local secrets known
+                    if (crossSigningInfo.getOrNull()?.isTrusted() == true
+                            && pInfo.getOrNull()?.master != null
+                            && pInfo.getOrNull()?.selfSigned != null
+                            && pInfo.getOrNull()?.user != null
+                    ) {
+                        // So 4S is not setup and we have local secrets,
+                        return@Function4 BannerState.Setup(numberOfKeys = getNumberOfKeysToBackup())
+                    }
+
+                    BannerState.Hidden
+                }
+        )
+                .throttleLast(1000, TimeUnit.MILLISECONDS) // we don't want to flicker or catch transient states
+                .distinctUntilChanged()
+                .execute { async ->
+                    copy(
+                            bannerState = async
+                    )
+                }
+
+        keyBackupPublishSubject.onNext(session.cryptoService().keysBackupService().state)
+    }
+
+    /**
+     * Safe way to get the current KeysBackup version
+     */
+    fun getCurrentBackupVersion(): String {
+        return session.cryptoService().keysBackupService().currentBackupVersion ?: ""
+    }
+
+    /**
+     * Safe way to get the number of keys to backup
+     */
+    fun getNumberOfKeysToBackup(): Int {
+        return session.cryptoService().inboundGroupSessionsCount(false)
+    }
+
+    /**
+     * Safe way to tell if there are more keys on the server
+     */
+    fun canRestoreKeys(): Boolean {
+        return session.cryptoService().keysBackupService().canRestoreKeys()
+    }
+
+    override fun onCleared() {
+        super.onCleared()
+        session.cryptoService().keysBackupService().removeListener(this)
+    }
+
+    override fun onStateChange(newState: KeysBackupState) {
+        keyBackupPublishSubject.onNext(session.cryptoService().keysBackupService().state)
+        keysBackupState.value = newState
+    }
+
+    fun refreshRemoteStateIfNeeded() {
+        if (keysBackupState.value == KeysBackupState.Disabled) {
+            session.cryptoService().keysBackupService().checkAndStartKeysBackup()
+        }
+    }
+
+    override fun handle(action: EmptyAction) {}
+}

vector/src/main/java/im/vector/riotx/features/workers/signout/SignOutBottomSheetDialogFragment.kt

@@ -28,19 +28,27 @@ import android.widget.ProgressBar
 import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
-import androidx.lifecycle.Observer
-import androidx.transition.TransitionManager
 import butterknife.BindView
+import com.airbnb.mvrx.Loading
+import com.airbnb.mvrx.Success
+import com.airbnb.mvrx.fragmentViewModel
+import com.airbnb.mvrx.withState
 import com.google.android.material.bottomsheet.BottomSheetBehavior
 import com.google.android.material.bottomsheet.BottomSheetDialog
+import im.vector.matrix.android.api.MatrixCallback
 import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupState
 import im.vector.riotx.R
+import im.vector.riotx.core.di.ScreenComponent
+import im.vector.riotx.core.dialogs.ExportKeysDialog
+import im.vector.riotx.core.extensions.queryExportKeys
 import im.vector.riotx.core.platform.VectorBaseBottomSheetDialogFragment
-import im.vector.riotx.core.utils.toast
-import im.vector.riotx.features.crypto.keysbackup.settings.KeysBackupManageActivity
 import im.vector.riotx.features.crypto.keysbackup.setup.KeysBackupSetupActivity
+import im.vector.riotx.features.crypto.recover.BootstrapBottomSheet
+import timber.log.Timber
+import javax.inject.Inject
 
-class SignOutBottomSheetDialogFragment : VectorBaseBottomSheetDialogFragment() {
+// TODO this needs to be refactored to current standard and remove legacy
+class SignOutBottomSheetDialogFragment : VectorBaseBottomSheetDialogFragment(), SignoutCheckViewModel.Factory {
 
     @BindView(R.id.bottom_sheet_signout_warning_text)
     lateinit var sheetTitle: TextView
@@ -48,14 +56,20 @@ class SignOutBottomSheetDialogFragment : VectorBaseBottomSheetDialogFragment() {
     @BindView(R.id.bottom_sheet_signout_backingup_status_group)
     lateinit var backingUpStatusGroup: ViewGroup
 
-    @BindView(R.id.keys_backup_setup)
-    lateinit var setupClickableView: View
+    @BindView(R.id.setupRecoveryButton)
+    lateinit var setupRecoveryButton: SignoutBottomSheetActionButton
 
-    @BindView(R.id.keys_backup_activate)
-    lateinit var activateClickableView: View
+    @BindView(R.id.setupMegolmBackupButton)
+    lateinit var setupMegolmBackupButton: SignoutBottomSheetActionButton
 
-    @BindView(R.id.keys_backup_dont_want)
-    lateinit var dontWantClickableView: View
+    @BindView(R.id.exportManuallyButton)
+    lateinit var exportManuallyButton: SignoutBottomSheetActionButton
+
+    @BindView(R.id.exitAnywayButton)
+    lateinit var exitAnywayButton: SignoutBottomSheetActionButton
+
+    @BindView(R.id.signOutButton)
+    lateinit var signOutButton: SignoutBottomSheetActionButton
 
     @BindView(R.id.bottom_sheet_signout_icon_progress_bar)
     lateinit var backupProgress: ProgressBar
@@ -66,8 +80,8 @@ class SignOutBottomSheetDialogFragment : VectorBaseBottomSheetDialogFragment() {
     @BindView(R.id.bottom_sheet_backup_status_text)
     lateinit var backupStatusTex: TextView
 
-    @BindView(R.id.bottom_sheet_signout_button)
-    lateinit var signoutClickableView: View
+    @BindView(R.id.signoutExportingLoading)
+    lateinit var signoutExportingLoading: View
 
     @BindView(R.id.root_layout)
     lateinit var rootLayout: ViewGroup
@@ -78,62 +92,44 @@ class SignOutBottomSheetDialogFragment : VectorBaseBottomSheetDialogFragment() {
         fun newInstance() = SignOutBottomSheetDialogFragment()
 
         private const val EXPORT_REQ = 0
+        private const val QUERY_EXPORT_KEYS = 1
     }
 
     init {
         isCancelable = true
     }
 
-    private lateinit var viewModel: SignOutViewModel
+    @Inject
+    lateinit var viewModelFactory: SignoutCheckViewModel.Factory
+
+    override fun create(initialState: SignoutCheckViewState): SignoutCheckViewModel {
+        return viewModelFactory.create(initialState)
+    }
+
+    private val viewModel: SignoutCheckViewModel by fragmentViewModel(SignoutCheckViewModel::class)
+
+    override fun injectWith(injector: ScreenComponent) {
+        injector.inject(this)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        viewModel.refreshRemoteStateIfNeeded()
+    }
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
 
-        viewModel = fragmentViewModelProvider.get(SignOutViewModel::class.java)
-
-        setupClickableView.setOnClickListener {
-            context?.let { context ->
-                startActivityForResult(KeysBackupSetupActivity.intent(context, true), EXPORT_REQ)
-            }
+        setupRecoveryButton.action = {
+            BootstrapBottomSheet.show(parentFragmentManager, false)
         }
 
-        activateClickableView.setOnClickListener {
-            context?.let { context ->
-                startActivity(KeysBackupManageActivity.intent(context))
-            }
-        }
-
-        signoutClickableView.setOnClickListener {
-            this.onSignOut?.run()
-        }
-
-        dontWantClickableView.setOnClickListener { _ ->
+        exitAnywayButton.action = {
             context?.let {
                 AlertDialog.Builder(it)
                         .setTitle(R.string.are_you_sure)
                         .setMessage(R.string.sign_out_bottom_sheet_will_lose_secure_messages)
-                        .setPositiveButton(R.string.backup) { _, _ ->
-                            when (viewModel.keysBackupState.value) {
-                                KeysBackupState.NotTrusted -> {
-                                    context?.let { context ->
-                                        startActivity(KeysBackupManageActivity.intent(context))
-                                    }
-                                }
-                                KeysBackupState.Disabled   -> {
-                                    context?.let { context ->
-                                        startActivityForResult(KeysBackupSetupActivity.intent(context, true), EXPORT_REQ)
-                                    }
-                                }
-                                KeysBackupState.BackingUp,
-                                KeysBackupState.WillBackUp -> {
-                                    // keys are already backing up please wait
-                                    context?.toast(R.string.keys_backup_is_not_finished_please_wait)
-                                }
-                                else                       -> {
-                                    // nop
-                                }
-                            }
-                        }
+                        .setPositiveButton(R.string.backup, null)
                         .setNegativeButton(R.string.action_sign_out) { _, _ ->
                             onSignOut?.run()
                         }
@@ -141,71 +137,143 @@ class SignOutBottomSheetDialogFragment : VectorBaseBottomSheetDialogFragment() {
             }
         }
 
-        viewModel.keysExportedToFile.observe(viewLifecycleOwner, Observer {
-            val hasExportedToFile = it ?: false
-            if (hasExportedToFile) {
-                // We can allow to sign out
-
-                sheetTitle.text = getString(R.string.action_sign_out_confirmation_simple)
-
-                signoutClickableView.isVisible = true
-                dontWantClickableView.isVisible = false
-                setupClickableView.isVisible = false
-                activateClickableView.isVisible = false
-                backingUpStatusGroup.isVisible = false
+        exportManuallyButton.action = {
+            withState(viewModel) { state ->
+                queryExportKeys(state.userId, QUERY_EXPORT_KEYS)
             }
-        })
+        }
 
-        viewModel.keysBackupState.observe(viewLifecycleOwner, Observer {
-            if (viewModel.keysExportedToFile.value == true) {
-                // ignore this
-                return@Observer
-            }
-            TransitionManager.beginDelayedTransition(rootLayout)
+        setupMegolmBackupButton.action = {
+            startActivityForResult(KeysBackupSetupActivity.intent(requireContext(), true), EXPORT_REQ)
+        }
+
+        viewModel.observeViewEvents {
             when (it) {
-                KeysBackupState.ReadyToBackUp -> {
-                    signoutClickableView.isVisible = true
-                    dontWantClickableView.isVisible = false
-                    setupClickableView.isVisible = false
-                    activateClickableView.isVisible = false
-                    backingUpStatusGroup.isVisible = true
+                is SignoutCheckViewModel.ViewEvents.ExportKeys -> {
+                    it.exporter
+                            .export(requireContext(),
+                                    it.passphrase,
+                                    it.uri,
+                                    object : MatrixCallback<Boolean> {
+                                        override fun onSuccess(data: Boolean) {
+                                            if (data) {
+                                                viewModel.handle(SignoutCheckViewModel.Actions.KeySuccessfullyManuallyExported)
+                                            } else {
+                                                viewModel.handle(SignoutCheckViewModel.Actions.KeyExportFailed)
+                                            }
+                                        }
 
+                                        override fun onFailure(failure: Throwable) {
+                                            Timber.e("## Failed to export manually keys ${failure.localizedMessage}")
+                                            viewModel.handle(SignoutCheckViewModel.Actions.KeyExportFailed)
+                                        }
+                                    })
+                }
+            }
+        }
+    }
+
+    override fun invalidate() = withState(viewModel) { state ->
+        signoutExportingLoading.isVisible = false
+        if (state.crossSigningSetupAllKeysKnown && !state.backupIsSetup) {
+            sheetTitle.text = getString(R.string.sign_out_bottom_sheet_warning_no_backup)
+            backingUpStatusGroup.isVisible = false
+            // we should show option to setup 4S
+            setupRecoveryButton.isVisible = true
+            setupMegolmBackupButton.isVisible = false
+            signOutButton.isVisible = false
+            // We let the option to ignore and quit
+            exportManuallyButton.isVisible = true
+            exitAnywayButton.isVisible = true
+        } else if (state.keysBackupState == KeysBackupState.Unknown || state.keysBackupState == KeysBackupState.Disabled) {
+            sheetTitle.text = getString(R.string.sign_out_bottom_sheet_warning_no_backup)
+            backingUpStatusGroup.isVisible = false
+            // no key backup and cannot setup full 4S
+            // we propose to setup
+            // we should show option to setup 4S
+            setupRecoveryButton.isVisible = false
+            setupMegolmBackupButton.isVisible = true
+            signOutButton.isVisible = false
+            // We let the option to ignore and quit
+            exportManuallyButton.isVisible = true
+            exitAnywayButton.isVisible = true
+        } else {
+            // so keybackup is setup
+            // You should wait until all are uploaded
+            setupRecoveryButton.isVisible = false
+
+            when (state.keysBackupState) {
+                KeysBackupState.ReadyToBackUp -> {
+                    sheetTitle.text = getString(R.string.action_sign_out_confirmation_simple)
+
+                    // Ok all keys are backedUp
+                    backingUpStatusGroup.isVisible = true
                     backupProgress.isVisible = false
                     backupCompleteImage.isVisible = true
                     backupStatusTex.text = getString(R.string.keys_backup_info_keys_all_backup_up)
 
-                    sheetTitle.text = getString(R.string.action_sign_out_confirmation_simple)
+                    hideViews(setupMegolmBackupButton, exportManuallyButton, exitAnywayButton)
+                    // You can signout
+                    signOutButton.isVisible = true
                 }
-                KeysBackupState.BackingUp,
-                KeysBackupState.WillBackUp    -> {
-                    backingUpStatusGroup.isVisible = true
-                    sheetTitle.text = getString(R.string.sign_out_bottom_sheet_warning_backing_up)
-                    dontWantClickableView.isVisible = true
-                    setupClickableView.isVisible = false
-                    activateClickableView.isVisible = false
 
+                KeysBackupState.WillBackUp,
+                KeysBackupState.BackingUp     -> {
+                    sheetTitle.text = getString(R.string.sign_out_bottom_sheet_warning_backing_up)
+
+                    // save in progress
+                    backingUpStatusGroup.isVisible = true
                     backupProgress.isVisible = true
                     backupCompleteImage.isVisible = false
                     backupStatusTex.text = getString(R.string.sign_out_bottom_sheet_backing_up_keys)
+
+                    hideViews(setupMegolmBackupButton, setupMegolmBackupButton, signOutButton, exportManuallyButton)
+                    exitAnywayButton.isVisible = true
                 }
                 KeysBackupState.NotTrusted    -> {
-                    backingUpStatusGroup.isVisible = false
-                    dontWantClickableView.isVisible = true
-                    setupClickableView.isVisible = false
-                    activateClickableView.isVisible = true
                     sheetTitle.text = getString(R.string.sign_out_bottom_sheet_warning_backup_not_active)
+                    // It's not trusted and we know there are unsaved keys..
+                    backingUpStatusGroup.isVisible = false
+
+                    exportManuallyButton.isVisible = true
+                    // option to enter pass/key
+                    setupMegolmBackupButton.isVisible = true
+                    exitAnywayButton.isVisible = true
                 }
                 else                          -> {
-                    backingUpStatusGroup.isVisible = false
-                    dontWantClickableView.isVisible = true
-                    setupClickableView.isVisible = true
-                    activateClickableView.isVisible = false
-                    sheetTitle.text = getString(R.string.sign_out_bottom_sheet_warning_no_backup)
+                    // mmm.. strange state
+
+                    exitAnywayButton.isVisible = true
                 }
             }
+        }
 
-            // updateSignOutSection()
-        })
+        // final call if keys have been exported
+        when (state.hasBeenExportedToFile) {
+            is Loading -> {
+                signoutExportingLoading.isVisible = true
+                hideViews(setupRecoveryButton,
+                        setupMegolmBackupButton,
+                        exportManuallyButton,
+                        backingUpStatusGroup,
+                        signOutButton)
+                exitAnywayButton.isVisible = true
+            }
+            is Success -> {
+                if (state.hasBeenExportedToFile.invoke()) {
+                    sheetTitle.text = getString(R.string.action_sign_out_confirmation_simple)
+                    hideViews(setupRecoveryButton,
+                            setupMegolmBackupButton,
+                            exportManuallyButton,
+                            backingUpStatusGroup,
+                            exitAnywayButton)
+                    signOutButton.isVisible = true
+                }
+            }
+            else       -> {
+            }
+        }
+        super.invalidate()
     }
 
     override fun getLayoutResId() = R.layout.bottom_sheet_logout_and_backup
@@ -228,10 +296,26 @@ class SignOutBottomSheetDialogFragment : VectorBaseBottomSheetDialogFragment() {
         super.onActivityResult(requestCode, resultCode, data)
 
         if (resultCode == Activity.RESULT_OK) {
-            if (requestCode == EXPORT_REQ) {
-                val manualExportDone = data?.getBooleanExtra(KeysBackupSetupActivity.MANUAL_EXPORT, false)
-                viewModel.keysExportedToFile.value = manualExportDone
+            if (requestCode == QUERY_EXPORT_KEYS) {
+                val uri = data?.data
+                if (resultCode == Activity.RESULT_OK && uri != null) {
+                    activity?.let { activity ->
+                        ExportKeysDialog().show(activity, object : ExportKeysDialog.ExportKeyDialogListener {
+                            override fun onPassphrase(passphrase: String) {
+                                viewModel.handle(SignoutCheckViewModel.Actions.ExportKeys(passphrase, uri))
+                            }
+                        })
+                    }
+                }
+            } else if (requestCode == EXPORT_REQ) {
+                if (data?.getBooleanExtra(KeysBackupSetupActivity.MANUAL_EXPORT, false) == true) {
+                    viewModel.handle(SignoutCheckViewModel.Actions.KeySuccessfullyManuallyExported)
+                }
             }
         }
     }
+
+    private fun hideViews(vararg views: View) {
+        views.forEach { it.isVisible = false }
+    }
 }

vector/src/main/java/im/vector/riotx/features/workers/signout/SignOutUiWorker.kt

@@ -21,7 +21,7 @@ import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.FragmentActivity
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ActiveSessionHolder
-import im.vector.riotx.core.extensions.hasUnsavedKeys
+import im.vector.riotx.core.extensions.cannotLogoutSafely
 import im.vector.riotx.core.extensions.vectorComponent
 import im.vector.riotx.features.MainActivity
 import im.vector.riotx.features.MainActivityArgs
@@ -33,7 +33,7 @@ class SignOutUiWorker(private val activity: FragmentActivity) {
     fun perform(context: Context) {
         activeSessionHolder = context.vectorComponent().activeSessionHolder()
         val session = activeSessionHolder.getActiveSession()
-        if (session.hasUnsavedKeys()) {
+        if (session.cannotLogoutSafely()) {
             // The backup check on logout flow has to be displayed if there are keys in the store, and the keys backup state is not Ready
             val signOutDialog = SignOutBottomSheetDialogFragment.newInstance()
             signOutDialog.onSignOut = Runnable {

vector/src/main/java/im/vector/riotx/features/workers/signout/SignOutViewModel.kt

@@ -1,74 +0,0 @@
-/*
- * Copyright 2019 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package im.vector.riotx.features.workers.signout
-
-import androidx.lifecycle.MutableLiveData
-import androidx.lifecycle.ViewModel
-import im.vector.matrix.android.api.session.Session
-import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupState
-import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupStateListener
-import javax.inject.Inject
-
-class SignOutViewModel @Inject constructor(private val session: Session) : ViewModel(), KeysBackupStateListener {
-    // Keys exported manually
-    var keysExportedToFile = MutableLiveData<Boolean>()
-
-    var keysBackupState = MutableLiveData<KeysBackupState>()
-
-    init {
-        session.cryptoService().keysBackupService().addListener(this)
-
-        keysBackupState.value = session.cryptoService().keysBackupService().state
-    }
-
-    /**
-     * Safe way to get the current KeysBackup version
-     */
-    fun getCurrentBackupVersion(): String {
-        return session.cryptoService().keysBackupService().currentBackupVersion ?: ""
-    }
-
-    /**
-     * Safe way to get the number of keys to backup
-     */
-    fun getNumberOfKeysToBackup(): Int {
-        return session.cryptoService().inboundGroupSessionsCount(false)
-    }
-
-    /**
-     * Safe way to tell if there are more keys on the server
-     */
-    fun canRestoreKeys(): Boolean {
-        return session.cryptoService().keysBackupService().canRestoreKeys()
-    }
-
-    override fun onCleared() {
-        super.onCleared()
-
-        session.cryptoService().keysBackupService().removeListener(this)
-    }
-
-    override fun onStateChange(newState: KeysBackupState) {
-        keysBackupState.value = newState
-    }
-
-    fun refreshRemoteStateIfNeeded() {
-        if (keysBackupState.value == KeysBackupState.Disabled) {
-            session.cryptoService().keysBackupService().checkAndStartKeysBackup()
-        }
-    }
-}

vector/src/main/java/im/vector/riotx/features/workers/signout/SignoutBottomSheetActionButton.kt

@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.workers.signout
+
+import android.content.Context
+import android.content.res.ColorStateList
+import android.graphics.drawable.Drawable
+import android.util.AttributeSet
+import android.view.View
+import android.widget.ImageView
+import android.widget.LinearLayout
+import android.widget.TextView
+import androidx.core.view.isVisible
+import butterknife.BindView
+import butterknife.ButterKnife
+import im.vector.riotx.R
+import im.vector.riotx.core.extensions.setTextOrHide
+import im.vector.riotx.features.themes.ThemeUtils
+
+class SignoutBottomSheetActionButton @JvmOverloads constructor(
+        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
+) : LinearLayout(context, attrs, defStyleAttr) {
+
+    @BindView(R.id.actionTitleText)
+    lateinit var actionTextView: TextView
+
+    @BindView(R.id.actionIconImageView)
+    lateinit var iconImageView: ImageView
+
+    @BindView(R.id.signedOutActionClickable)
+    lateinit var clickableZone: View
+
+    var action: (() -> Unit)? = null
+
+    var title: String? = null
+        set(value) {
+            field = value
+            actionTextView.setTextOrHide(value)
+        }
+
+    var leftIcon: Drawable? = null
+        set(value) {
+            field = value
+            if (value == null) {
+                iconImageView.isVisible = false
+                iconImageView.setImageDrawable(null)
+            } else {
+                iconImageView.isVisible = true
+                iconImageView.setImageDrawable(value)
+            }
+        }
+
+    var tint: Int? = null
+        set(value) {
+            field = value
+            iconImageView.imageTintList = value?.let { ColorStateList.valueOf(value) }
+        }
+
+    var textColor: Int? = null
+        set(value) {
+            field = value
+            textColor?.let { actionTextView.setTextColor(it) }
+        }
+
+    init {
+        inflate(context, R.layout.item_signout_action, this)
+        ButterKnife.bind(this)
+
+        val typedArray = context.obtainStyledAttributes(attrs, R.styleable.SignoutBottomSheetActionButton, 0, 0)
+        title = typedArray.getString(R.styleable.SignoutBottomSheetActionButton_actionTitle) ?: ""
+        leftIcon = typedArray.getDrawable(R.styleable.SignoutBottomSheetActionButton_leftIcon)
+        tint = typedArray.getColor(R.styleable.SignoutBottomSheetActionButton_iconTint, ThemeUtils.getColor(context, android.R.attr.textColor))
+        textColor = typedArray.getColor(R.styleable.SignoutBottomSheetActionButton_textColor, ThemeUtils.getColor(context, android.R.attr.textColor))
+
+        typedArray.recycle()
+
+        clickableZone.setOnClickListener {
+            action?.invoke()
+        }
+    }
+}