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Proof-of-concept works for chat message/screen reader compatibility.

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This commit is contained in:
jtrobinson 2013-01-30 17:41:19 +00:00
parent e6f38b17a4
commit 2c44133c13
1 changed files with 28 additions and 73 deletions
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101
bigbluebutton-client/src/org/bigbluebutton/modules/chat/views/ChatBox.mxml
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@ -143,10 +143,7 @@
private function onCreationComplete():void {
bindToHeightToDetermineHeightOfMessageList();
//LogUtil.debug("WATERFALL-BOX BaseIndex is " + baseIndex);
//loadKeyCombos();
addContextMenuItems();
scrollTimer = new Timer(750, 2);
scrollTimer.addEventListener(TimerEvent.TIMER, onScrollTimer);
@ -181,17 +178,14 @@
}
private function focusChatBox(e:ShortcutEvent):void{
LogUtil.debug("WATERFALL: Focus Chat Box signal received.");
focusManager.setFocus(chatMessagesList);
}
private function focusColourPicker(e:ShortcutEvent):void{
LogUtil.debug("WATERFALL: Focus Colour Picker signal received.");
focusManager.setFocus(cmpColorPicker);
}
private function remoteSendMessage(e:ShortcutEvent):void{
LogUtil.debug("WATERFALL: Send Message signal received.");
sendMessages();
}
@ -340,18 +334,10 @@
// Determines for navigateMessages() whether the message to be spoken by the screen-reader needs an extra space added to the end or not
private function setDescription():Boolean{
LogUtil.debug("Starting setDescription");
//LogUtil.debug("WATERFALL: In setDesdecription; currentMessage is " + currentMessage); // It's zero when we navigate to first message
//LogUtil.debug("chatMessages.messages.length is " + chatMessages.messages.length);
//LogUtil.debug("WATERFALL: And just to check: " + chatMessages.messages.getItemAt(currentMessage).toString());
var chatHistorySpacer:Boolean = false;
//LogUtil.debug("About to enter SD if block");
if (chatMessagesList.accessibilityProperties.description == chatMessages.messages.getItemAt(currentMessage).toString()) {
//LogUtil.debug("In SD if block");
chatHistorySpacer = true;
}
LogUtil.debug("Done with setDescription");
return chatHistorySpacer;
}
@ -381,10 +367,8 @@
}
public function hotkeyCapture():void{
//trace("Entering hotkeyCapture");
this.addEventListener(KeyboardEvent.KEY_DOWN, handleKeyDown);
ResourceUtil.getInstance().addEventListener(Event.CHANGE, localeChanged); // Listen for locale changing
//trace("Leaving hotkeyCapture");
}
private function handleKeyDown(e:KeyboardEvent) :void {
@ -393,12 +377,7 @@
var keyPress:String = (e.ctrlKey ? "control+" : "") + (e.shiftKey ? "shift+" : "") + (e.altKey ? "alt+" : "") + e.keyCode;
/*if (e.keyCode < 64 || e.keyCode > 90){
LogUtil.debug("WATERFALL: KeyCode " + e.keyCode + " is nonalphabetic (probably)");
}*/
LogUtil.debug("WATERFALL: Checking if " + modifier + e.keyCode + " is a recognized ChatBox hotkey");
if (keyCombos[keyPress]) {
LogUtil.debug("Yes it is");
var event:ShortcutEvent = new ShortcutEvent(keyCombos[keyPress]);
event.otherUserID = chatWithUserID;
globalDispatcher.dispatchEvent(event);
@ -406,25 +385,17 @@
}
private function advanceMessage(e:ShortcutEvent):void{
LogUtil.debug("WATERFALL: Entering advanceMessage()");
LogUtil.debug("e.otherUserID = " + e.otherUserID + ", chatWithUserID = " + chatWithUserID);
// Recompile this in the morning and see how it goes
if (e.otherUserID == chatWithUserID){
//if (currentMessage < (chatMessages.numMessages() - 3)){
if (currentMessage < (chatMessages.numMessages() - 1)){
LogUtil.debug("Incrementing message");
currentMessage++;
} else {
chatMessagesList.accessibilityProperties.description += " ";
LogUtil.debug("We can go no further; description is " + chatMessagesList.accessibilityProperties.description);
}
LogUtil.debug("WATERFALL: About to go into navigationMaintenance()");
navigationMaintenance();
}
}
private function goBackOneMessage(e:ShortcutEvent):void {
//LogUtil.debug("WATERFALL: Entering goBackOneMessage()");
if (e.otherUserID == chatWithUserID){
if (currentMessage > 0){
currentMessage--;
@ -432,43 +403,30 @@
else{
chatMessagesList.accessibilityProperties.description += " ";
}
//LogUtil.debug("WATERFALL: About to go into navigationMaintenance()");
navigationMaintenance();
}
}
private function repeatMessage(e:ShortcutEvent):void {
//LogUtil.debug("WATERFALL: Entering repeatMessage()");
if (e.otherUserID == chatWithUserID){
chatMessagesList.accessibilityProperties.description += " ";
repeat = true;
//LogUtil.debug("WATERFALL: About to go into navigationMaintenance()");
navigationMaintenance();
}
}
private function goToLatestMessage(e:ShortcutEvent):void {
//LogUtil.debug("WATERFALL: Entering goToLatestMessage()");
if (e.otherUserID == chatWithUserID){
currentMessage = chatMessages.numMessages() - 3;
currentMessage = chatMessages.numMessages() - 1;
navToLatest = true;
spacerNeeded = setDescription();
indicatorNeeded = true;
LogUtil.debug("In golatest; currentMessage is " + currentMessage + " and numMessages is " + chatMessages.numMessages());
LogUtil.debug(navLatestString);
LogUtil.debug(chatMessages.messages.getItemAt(currentMessage).toString());
LogUtil.debug(navLatestString + " " + chatMessages.messages.getItemAt(currentMessage).toString());
chatMessagesList.accessibilityProperties.description = navLatestString + " " + chatMessages.messages.getItemAt(currentMessage).toString();
//Accessibility.updateProperties();
//LogUtil.debug("WATERFALL: About to go into navigationMaintenance()");
navigationMaintenance();
}
}
private function goToFirstMessage(e:ShortcutEvent):void {
//LogUtil.debug("WATERFALL: Entering goToFirstMessage()");
//LogUtil.debug("WATERFALL: e.otherUserID = " + e.otherUserID + ", chatWithUserID = " + chatWithUserID);
if (e.otherUserID == chatWithUserID){
currentMessage = 0;
navToFirst = true;
@ -480,19 +438,15 @@
}
private function goToLatestReadMessage(e:ShortcutEvent):void {
//LogUtil.debug("WATERFALL: Entering goToLatestReadMessage()");
if (e.otherUserID == chatWithUserID){
currentMessage = latestMessage;
chatMessagesList.accessibilityProperties.description = navRecentString;
//Accessibility.updateProperties();
//LogUtil.debug("WATERFALL: About to go into navigationMaintenance()");
navigationMaintenance();
}
}
private function navigationMaintenance():void {
// Update the latestMessage counter for new message notifications
LogUtil.debug("WATERFALL: Entering navigationMaintenance()");
if (currentMessage > latestMessage)
latestMessage = currentMessage;
@ -500,22 +454,17 @@
// Make it clear to the user that they have either navigated to or reached one end of the message history or the other.
if (currentMessage == 0){
if (!navToFirst){
LogUtil.debug("Trying to navigate before first message");
indicatorNeeded = true;
chatMessagesList.accessibilityProperties.description = reachedFirst + " " + chatMessages.messages.getItemAt(currentMessage).toString();
//Accessibility.updateProperties();
}
}
else if (currentMessage == chatMessages.numMessages() - 3){
else if (currentMessage == chatMessages.numMessages() - 1){
if (!navToLatest){
LogUtil.debug("Trying to navigate past last message");
indicatorNeeded = true;
chatMessagesList.accessibilityProperties.description = reachedLatest + " " + chatMessages.messages.getItemAt(currentMessage).toString();
//Accessibility.updateProperties();
chatMessagesList.accessibilityProperties.description = reachedLatest + " " + chatMessages.messages.getItemAt(currentMessage).toString();
}
}
else{
LogUtil.debug("In else statement");
// Set the accessibility description to the indicated message
chatMessagesList.accessibilityProperties.description = chatMessages.messages.getItemAt(currentMessage).toString();
}
@ -525,11 +474,7 @@
chatMessagesList.accessibilityProperties.description += " ";
}
}
//LogUtil.debug("WATERFALL: About to update Accessibility properties");
LogUtil.debug("WATERFALL: About to run Acc.upProp in navMaint, description is: " + chatMessagesList.accessibilityProperties.description);
Accessibility.updateProperties();
//LogUtil.debug("WATERFALL: Update successful");
navToFirst = false;
navToLatest = false;
spacerNeeded = false;
@ -538,19 +483,32 @@
LogUtil.debug("Done with navigationMaintenance(); description is now " + chatMessagesList.accessibilityProperties.description);
}
// General-purpose developer method, used during testing of ChatBox accessibility
private function chatDebugInfo(e:ShortcutEvent):void{
LogUtil.debug("----CHAT DEBUG INFORMATION----");
LogUtil.debug("chatWithUserID is: " + chatWithUserID);
LogUtil.debug("currentMessage is: " + currentMessage);
LogUtil.debug("latestMessage is: " + latestMessage);
LogUtil.debug("Focused message is: " + chatMessages.messages.getItemAt(currentMessage).toString());
LogUtil.debug("Number of messages is: " + chatMessages.messages.length);
LogUtil.debug("chatMessagesList.accessibilityProperties.description is: " + chatMessagesList.accessibilityProperties.description);
//LogUtil.debug("repeat is: " + repeat);
//LogUtil.debug("navToFirst is: " + navToFirst);
//LogUtil.debug("indicatorNeeded is: " + indicatorNeeded);
//LogUtil.debug("navToLatest is: " + navToLatest);
//LogUtil.debug(" is: " + );
var num:int = chatMessages.numMessages();
LogUtil.debug("Printing all chat messages of the " + num + " present:");
for (var i:int = 0; i < num; i++){
if (chatMessages.messages.getItemAt(i) != null)
LogUtil.debug("Message " + i + ": " + chatMessages.messages.getItemAt(i).toString());
else
LogUtil.debug("Message " + i + " is NULL");
}
/*
LogUtil.debug("chatWithUserID is: " + chatWithUserID);
LogUtil.debug("currentMessage is: " + currentMessage);
LogUtil.debug("latestMessage is: " + latestMessage);
LogUtil.debug("Focused message is: " + chatMessages.messages.getItemAt(currentMessage).toString());
LogUtil.debug("Number of messages is: " + chatMessages.messages.length);
LogUtil.debug("chatMessagesList.accessibilityProperties.description is: " + chatMessagesList.accessibilityProperties.description);
*/
//LogUtil.debug("repeat is: " + repeat);
//LogUtil.debug("navToFirst is: " + navToFirst);
//LogUtil.debug("indicatorNeeded is: " + indicatorNeeded);
//LogUtil.debug("navToLatest is: " + navToLatest);
//LogUtil.debug(" is: " + );
LogUtil.debug("------------------------------");
}
@ -599,8 +557,6 @@
}
private function handleTextAreaKeyUpEvent(e:KeyboardEvent):void {
//LogUtil.debug("Entering handle key UP with keycode " + e.keyCode);
// Chad keypress
if (e.keyCode == Keyboard.ENTER) {
sendMessages();
}
@ -622,7 +578,6 @@
}
private function focusChatInput(e:ShortcutEvent):void{
//LogUtil.debug("WATERFALL focusChatInput");
txtMsgArea.setFocus();
}
]]>