From 3a2ed60274ea6e7969c187fb1be4a3c69971f6be Mon Sep 17 00:00:00 2001 From: Nabeel Shahzad Date: Sun, 11 Jun 2017 18:20:43 -0500 Subject: [PATCH] add pjax support --- app/Http/Kernel.php | 1 + composer.json | 3 +- composer.lock | 166 ++++-- public/vendor/pjax/jquery.pjax.js | 903 ++++++++++++++++++++++++++++++ 4 files changed, 1015 insertions(+), 58 deletions(-) create mode 100644 public/vendor/pjax/jquery.pjax.js diff --git a/app/Http/Kernel.php b/app/Http/Kernel.php index ff56c8f9..cadc8cd7 100755 --- a/app/Http/Kernel.php +++ b/app/Http/Kernel.php @@ -15,6 +15,7 @@ class Kernel extends HttpKernel */ protected $middleware = [ \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class, + \Spatie\Pjax\Middleware\FilterIfPjax::class, ]; /** diff --git a/composer.json b/composer.json index 074a2475..962161ae 100755 --- a/composer.json +++ b/composer.json @@ -16,7 +16,8 @@ "jlapp/swaggervel": "dev-master", "doctrine/dbal": "~2.3", "zizaco/entrust": "5.2.x-dev", - "prettus/l5-repository": "^2.6" + "prettus/l5-repository": "^2.6", + "spatie/laravel-pjax": "^1.3" }, "require-dev": { "fzaninotto/faker": "~1.4", diff --git a/composer.lock b/composer.lock index fe0b73f8..40a89203 100644 --- a/composer.lock +++ b/composer.lock @@ -4,7 +4,7 @@ "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file", "This file is @generated automatically" ], - "content-hash": "e5d6a4a09e901eae8c895fe8c97979cc", + "content-hash": "528d419a11eb2963be54a289afa2fbbc", "packages": [ { "name": "barryvdh/laravel-ide-helper", @@ -2003,6 +2003,58 @@ ], "time": "2017-03-26T20:37:53+00:00" }, + { + "name": "spatie/laravel-pjax", + "version": "1.3.1", + "source": { + "type": "git", + "url": "https://github.com/spatie/laravel-pjax.git", + "reference": "30e1509517a6371a5774a29e99e2db204cb7fc5b" + }, + "dist": { + "type": "zip", + "url": "https://api.github.com/repos/spatie/laravel-pjax/zipball/30e1509517a6371a5774a29e99e2db204cb7fc5b", + "reference": "30e1509517a6371a5774a29e99e2db204cb7fc5b", + "shasum": "" + }, + "require": { + "illuminate/http": "^5.1", + "illuminate/support": "^5.1", + "php": "^5.5.0|^7.0", + "symfony/css-selector": "^2.7|^3.0", + "symfony/dom-crawler": "^2.7|^3.0" + }, + "require-dev": { + "phpunit/phpunit": "4.*", + "scrutinizer/ocular": "~1.1" + }, + "type": "library", + "autoload": { + "psr-4": { + "Spatie\\Pjax\\": "src" + } + }, + "notification-url": "https://packagist.org/downloads/", + "license": [ + "MIT" + ], + "authors": [ + { + "name": "Freek Van der Herten", + "email": "freek@spatie.be", + "homepage": "https://spatie.be", + "role": "Developer" + } + ], + "description": "A pjax middleware for Laravel 5", + "homepage": "https://github.com/spatie/laravel-pjax", + "keywords": [ + "laravel-pjax", + "pjax", + "spatie" + ], + "time": "2016-02-18T15:16:46+00:00" + }, { "name": "swiftmailer/swiftmailer", "version": "v5.4.8", @@ -2291,6 +2343,62 @@ "homepage": "https://symfony.com", "time": "2017-06-01T21:01:25+00:00" }, + { + "name": "symfony/dom-crawler", + "version": "v3.1.10", + "source": { + "type": "git", + "url": "https://github.com/symfony/dom-crawler.git", + "reference": "7eede2a901a19928494194f7d1815a77b9a473a0" + }, + "dist": { + "type": "zip", + "url": "https://api.github.com/repos/symfony/dom-crawler/zipball/7eede2a901a19928494194f7d1815a77b9a473a0", + "reference": "7eede2a901a19928494194f7d1815a77b9a473a0", + "shasum": "" + }, + "require": { + "php": ">=5.5.9", + "symfony/polyfill-mbstring": "~1.0" + }, + "require-dev": { + "symfony/css-selector": "~2.8|~3.0" + }, + "suggest": { + "symfony/css-selector": "" + }, + "type": "library", + "extra": { + "branch-alias": { + "dev-master": "3.1-dev" + } + }, + "autoload": { + "psr-4": { + "Symfony\\Component\\DomCrawler\\": "" + }, + "exclude-from-classmap": [ + "/Tests/" + ] + }, + "notification-url": "https://packagist.org/downloads/", + "license": [ + "MIT" + ], + "authors": [ + { + "name": "Fabien Potencier", + "email": "fabien@symfony.com" + }, + { + "name": "Symfony Community", + "homepage": "https://symfony.com/contributors" + } + ], + "description": "Symfony DomCrawler Component", + "homepage": "https://symfony.com", + "time": "2017-01-21T17:13:55+00:00" + }, { "name": "symfony/event-dispatcher", "version": "v3.3.2", @@ -4624,62 +4732,6 @@ "homepage": "https://github.com/sebastianbergmann/version", "time": "2016-10-03T07:35:21+00:00" }, - { - "name": "symfony/dom-crawler", - "version": "v3.1.10", - "source": { - "type": "git", - "url": "https://github.com/symfony/dom-crawler.git", - "reference": "7eede2a901a19928494194f7d1815a77b9a473a0" - }, - "dist": { - "type": "zip", - "url": "https://api.github.com/repos/symfony/dom-crawler/zipball/7eede2a901a19928494194f7d1815a77b9a473a0", - "reference": "7eede2a901a19928494194f7d1815a77b9a473a0", - "shasum": "" - }, - "require": { - "php": ">=5.5.9", - "symfony/polyfill-mbstring": "~1.0" - }, - "require-dev": { - "symfony/css-selector": "~2.8|~3.0" - }, - "suggest": { - "symfony/css-selector": "" - }, - "type": "library", - "extra": { - "branch-alias": { - "dev-master": "3.1-dev" - } - }, - "autoload": { - "psr-4": { - "Symfony\\Component\\DomCrawler\\": "" - }, - "exclude-from-classmap": [ - "/Tests/" - ] - }, - "notification-url": "https://packagist.org/downloads/", - "license": [ - "MIT" - ], - "authors": [ - { - "name": "Fabien Potencier", - "email": "fabien@symfony.com" - }, - { - "name": "Symfony Community", - "homepage": "https://symfony.com/contributors" - } - ], - "description": "Symfony DomCrawler Component", - "homepage": "https://symfony.com", - "time": "2017-01-21T17:13:55+00:00" - }, { "name": "symfony/yaml", "version": "v3.3.2", diff --git a/public/vendor/pjax/jquery.pjax.js b/public/vendor/pjax/jquery.pjax.js new file mode 100644 index 00000000..d57269d4 --- /dev/null +++ b/public/vendor/pjax/jquery.pjax.js @@ -0,0 +1,903 @@ +/*! + * Copyright 2012, Chris Wanstrath + * Released under the MIT License + * https://github.com/defunkt/jquery-pjax + */ + +(function($){ + +// When called on a container with a selector, fetches the href with +// ajax into the container or with the data-pjax attribute on the link +// itself. +// +// Tries to make sure the back button and ctrl+click work the way +// you'd expect. +// +// Exported as $.fn.pjax +// +// Accepts a jQuery ajax options object that may include these +// pjax specific options: +// +// +// container - String selector for the element where to place the response body. +// push - Whether to pushState the URL. Defaults to true (of course). +// replace - Want to use replaceState instead? That's cool. +// +// For convenience the second parameter can be either the container or +// the options object. +// +// Returns the jQuery object +function fnPjax(selector, container, options) { + options = optionsFor(container, options) + return this.on('click.pjax', selector, function(event) { + var opts = options + if (!opts.container) { + opts = $.extend({}, options) + opts.container = $(this).attr('data-pjax') + } + handleClick(event, opts) + }) +} + +// Public: pjax on click handler +// +// Exported as $.pjax.click. +// +// event - "click" jQuery.Event +// options - pjax options +// +// Examples +// +// $(document).on('click', 'a', $.pjax.click) +// // is the same as +// $(document).pjax('a') +// +// Returns nothing. +function handleClick(event, container, options) { + options = optionsFor(container, options) + + var link = event.currentTarget + var $link = $(link) + + if (link.tagName.toUpperCase() !== 'A') + throw "$.fn.pjax or $.pjax.click requires an anchor element" + + // Middle click, cmd click, and ctrl click should open + // links in a new tab as normal. + if ( event.which > 1 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey ) + return + + // Ignore cross origin links + if ( location.protocol !== link.protocol || location.hostname !== link.hostname ) + return + + // Ignore case when a hash is being tacked on the current URL + if ( link.href.indexOf('#') > -1 && stripHash(link) == stripHash(location) ) + return + + // Ignore event with default prevented + if (event.isDefaultPrevented()) + return + + var defaults = { + url: link.href, + container: $link.attr('data-pjax'), + target: link + } + + var opts = $.extend({}, defaults, options) + var clickEvent = $.Event('pjax:click') + $link.trigger(clickEvent, [opts]) + + if (!clickEvent.isDefaultPrevented()) { + pjax(opts) + event.preventDefault() + $link.trigger('pjax:clicked', [opts]) + } +} + +// Public: pjax on form submit handler +// +// Exported as $.pjax.submit +// +// event - "click" jQuery.Event +// options - pjax options +// +// Examples +// +// $(document).on('submit', 'form', function(event) { +// $.pjax.submit(event, '[data-pjax-container]') +// }) +// +// Returns nothing. +function handleSubmit(event, container, options) { + options = optionsFor(container, options) + + var form = event.currentTarget + var $form = $(form) + + if (form.tagName.toUpperCase() !== 'FORM') + throw "$.pjax.submit requires a form element" + + var defaults = { + type: ($form.attr('method') || 'GET').toUpperCase(), + url: $form.attr('action'), + container: $form.attr('data-pjax'), + target: form + } + + if (defaults.type !== 'GET' && window.FormData !== undefined) { + defaults.data = new FormData(form) + defaults.processData = false + defaults.contentType = false + } else { + // Can't handle file uploads, exit + if ($form.find(':file').length) { + return + } + + // Fallback to manually serializing the fields + defaults.data = $form.serializeArray() + } + + pjax($.extend({}, defaults, options)) + + event.preventDefault() +} + +// Loads a URL with ajax, puts the response body inside a container, +// then pushState()'s the loaded URL. +// +// Works just like $.ajax in that it accepts a jQuery ajax +// settings object (with keys like url, type, data, etc). +// +// Accepts these extra keys: +// +// container - String selector for where to stick the response body. +// push - Whether to pushState the URL. Defaults to true (of course). +// replace - Want to use replaceState instead? That's cool. +// +// Use it just like $.ajax: +// +// var xhr = $.pjax({ url: this.href, container: '#main' }) +// console.log( xhr.readyState ) +// +// Returns whatever $.ajax returns. +function pjax(options) { + options = $.extend(true, {}, $.ajaxSettings, pjax.defaults, options) + + if ($.isFunction(options.url)) { + options.url = options.url() + } + + var hash = parseURL(options.url).hash + + var containerType = $.type(options.container) + if (containerType !== 'string') { + throw "expected string value for 'container' option; got " + containerType + } + var context = options.context = $(options.container) + if (!context.length) { + throw "the container selector '" + options.container + "' did not match anything" + } + + // We want the browser to maintain two separate internal caches: one + // for pjax'd partial page loads and one for normal page loads. + // Without adding this secret parameter, some browsers will often + // confuse the two. + if (!options.data) options.data = {} + if ($.isArray(options.data)) { + options.data.push({name: '_pjax', value: options.container}) + } else { + options.data._pjax = options.container + } + + function fire(type, args, props) { + if (!props) props = {} + props.relatedTarget = options.target + var event = $.Event(type, props) + context.trigger(event, args) + return !event.isDefaultPrevented() + } + + var timeoutTimer + + options.beforeSend = function(xhr, settings) { + // No timeout for non-GET requests + // Its not safe to request the resource again with a fallback method. + if (settings.type !== 'GET') { + settings.timeout = 0 + } + + xhr.setRequestHeader('X-PJAX', 'true') + xhr.setRequestHeader('X-PJAX-Container', options.container) + + if (!fire('pjax:beforeSend', [xhr, settings])) + return false + + if (settings.timeout > 0) { + timeoutTimer = setTimeout(function() { + if (fire('pjax:timeout', [xhr, options])) + xhr.abort('timeout') + }, settings.timeout) + + // Clear timeout setting so jquerys internal timeout isn't invoked + settings.timeout = 0 + } + + var url = parseURL(settings.url) + if (hash) url.hash = hash + options.requestUrl = stripInternalParams(url) + } + + options.complete = function(xhr, textStatus) { + if (timeoutTimer) + clearTimeout(timeoutTimer) + + fire('pjax:complete', [xhr, textStatus, options]) + + fire('pjax:end', [xhr, options]) + } + + options.error = function(xhr, textStatus, errorThrown) { + var container = extractContainer("", xhr, options) + + var allowed = fire('pjax:error', [xhr, textStatus, errorThrown, options]) + if (options.type == 'GET' && textStatus !== 'abort' && allowed) { + locationReplace(container.url) + } + } + + options.success = function(data, status, xhr) { + var previousState = pjax.state + + // If $.pjax.defaults.version is a function, invoke it first. + // Otherwise it can be a static string. + var currentVersion = typeof $.pjax.defaults.version === 'function' ? + $.pjax.defaults.version() : + $.pjax.defaults.version + + var latestVersion = xhr.getResponseHeader('X-PJAX-Version') + + var container = extractContainer(data, xhr, options) + + var url = parseURL(container.url) + if (hash) { + url.hash = hash + container.url = url.href + } + + // If there is a layout version mismatch, hard load the new url + if (currentVersion && latestVersion && currentVersion !== latestVersion) { + locationReplace(container.url) + return + } + + // If the new response is missing a body, hard load the page + if (!container.contents) { + locationReplace(container.url) + return + } + + pjax.state = { + id: options.id || uniqueId(), + url: container.url, + title: container.title, + container: options.container, + fragment: options.fragment, + timeout: options.timeout + } + + if (options.push || options.replace) { + window.history.replaceState(pjax.state, container.title, container.url) + } + + // Only blur the focus if the focused element is within the container. + var blurFocus = $.contains(context, document.activeElement) + + // Clear out any focused controls before inserting new page contents. + if (blurFocus) { + try { + document.activeElement.blur() + } catch (e) { /* ignore */ } + } + + if (container.title) document.title = container.title + + fire('pjax:beforeReplace', [container.contents, options], { + state: pjax.state, + previousState: previousState + }) + context.html(container.contents) + + // FF bug: Won't autofocus fields that are inserted via JS. + // This behavior is incorrect. So if theres no current focus, autofocus + // the last field. + // + // http://www.w3.org/html/wg/drafts/html/master/forms.html + var autofocusEl = context.find('input[autofocus], textarea[autofocus]').last()[0] + if (autofocusEl && document.activeElement !== autofocusEl) { + autofocusEl.focus() + } + + executeScriptTags(container.scripts) + + var scrollTo = options.scrollTo + + // Ensure browser scrolls to the element referenced by the URL anchor + if (hash) { + var name = decodeURIComponent(hash.slice(1)) + var target = document.getElementById(name) || document.getElementsByName(name)[0] + if (target) scrollTo = $(target).offset().top + } + + if (typeof scrollTo == 'number') $(window).scrollTop(scrollTo) + + fire('pjax:success', [data, status, xhr, options]) + } + + + // Initialize pjax.state for the initial page load. Assume we're + // using the container and options of the link we're loading for the + // back button to the initial page. This ensures good back button + // behavior. + if (!pjax.state) { + pjax.state = { + id: uniqueId(), + url: window.location.href, + title: document.title, + container: options.container, + fragment: options.fragment, + timeout: options.timeout + } + window.history.replaceState(pjax.state, document.title) + } + + // Cancel the current request if we're already pjaxing + abortXHR(pjax.xhr) + + pjax.options = options + var xhr = pjax.xhr = $.ajax(options) + + if (xhr.readyState > 0) { + if (options.push && !options.replace) { + // Cache current container element before replacing it + cachePush(pjax.state.id, [options.container, cloneContents(context)]) + + window.history.pushState(null, "", options.requestUrl) + } + + fire('pjax:start', [xhr, options]) + fire('pjax:send', [xhr, options]) + } + + return pjax.xhr +} + +// Public: Reload current page with pjax. +// +// Returns whatever $.pjax returns. +function pjaxReload(container, options) { + var defaults = { + url: window.location.href, + push: false, + replace: true, + scrollTo: false + } + + return pjax($.extend(defaults, optionsFor(container, options))) +} + +// Internal: Hard replace current state with url. +// +// Work for around WebKit +// https://bugs.webkit.org/show_bug.cgi?id=93506 +// +// Returns nothing. +function locationReplace(url) { + window.history.replaceState(null, "", pjax.state.url) + window.location.replace(url) +} + + +var initialPop = true +var initialURL = window.location.href +var initialState = window.history.state + +// Initialize $.pjax.state if possible +// Happens when reloading a page and coming forward from a different +// session history. +if (initialState && initialState.container) { + pjax.state = initialState +} + +// Non-webkit browsers don't fire an initial popstate event +if ('state' in window.history) { + initialPop = false +} + +// popstate handler takes care of the back and forward buttons +// +// You probably shouldn't use pjax on pages with other pushState +// stuff yet. +function onPjaxPopstate(event) { + + // Hitting back or forward should override any pending PJAX request. + if (!initialPop) { + abortXHR(pjax.xhr) + } + + var previousState = pjax.state + var state = event.state + var direction + + if (state && state.container) { + // When coming forward from a separate history session, will get an + // initial pop with a state we are already at. Skip reloading the current + // page. + if (initialPop && initialURL == state.url) return + + if (previousState) { + // If popping back to the same state, just skip. + // Could be clicking back from hashchange rather than a pushState. + if (previousState.id === state.id) return + + // Since state IDs always increase, we can deduce the navigation direction + direction = previousState.id < state.id ? 'forward' : 'back' + } + + var cache = cacheMapping[state.id] || [] + var containerSelector = cache[0] || state.container + var container = $(containerSelector), contents = cache[1] + + if (container.length) { + if (previousState) { + // Cache current container before replacement and inform the + // cache which direction the history shifted. + cachePop(direction, previousState.id, [containerSelector, cloneContents(container)]) + } + + var popstateEvent = $.Event('pjax:popstate', { + state: state, + direction: direction + }) + container.trigger(popstateEvent) + + var options = { + id: state.id, + url: state.url, + container: containerSelector, + push: false, + fragment: state.fragment, + timeout: state.timeout, + scrollTo: false + } + + if (contents) { + container.trigger('pjax:start', [null, options]) + + pjax.state = state + if (state.title) document.title = state.title + var beforeReplaceEvent = $.Event('pjax:beforeReplace', { + state: state, + previousState: previousState + }) + container.trigger(beforeReplaceEvent, [contents, options]) + container.html(contents) + + container.trigger('pjax:end', [null, options]) + } else { + pjax(options) + } + + // Force reflow/relayout before the browser tries to restore the + // scroll position. + container[0].offsetHeight // eslint-disable-line no-unused-expressions + } else { + locationReplace(location.href) + } + } + initialPop = false +} + +// Fallback version of main pjax function for browsers that don't +// support pushState. +// +// Returns nothing since it retriggers a hard form submission. +function fallbackPjax(options) { + var url = $.isFunction(options.url) ? options.url() : options.url, + method = options.type ? options.type.toUpperCase() : 'GET' + + var form = $('
', { + method: method === 'GET' ? 'GET' : 'POST', + action: url, + style: 'display:none' + }) + + if (method !== 'GET' && method !== 'POST') { + form.append($('', { + type: 'hidden', + name: '_method', + value: method.toLowerCase() + })) + } + + var data = options.data + if (typeof data === 'string') { + $.each(data.split('&'), function(index, value) { + var pair = value.split('=') + form.append($('', {type: 'hidden', name: pair[0], value: pair[1]})) + }) + } else if ($.isArray(data)) { + $.each(data, function(index, value) { + form.append($('', {type: 'hidden', name: value.name, value: value.value})) + }) + } else if (typeof data === 'object') { + var key + for (key in data) + form.append($('', {type: 'hidden', name: key, value: data[key]})) + } + + $(document.body).append(form) + form.submit() +} + +// Internal: Abort an XmlHttpRequest if it hasn't been completed, +// also removing its event handlers. +function abortXHR(xhr) { + if ( xhr && xhr.readyState < 4) { + xhr.onreadystatechange = $.noop + xhr.abort() + } +} + +// Internal: Generate unique id for state object. +// +// Use a timestamp instead of a counter since ids should still be +// unique across page loads. +// +// Returns Number. +function uniqueId() { + return (new Date).getTime() +} + +function cloneContents(container) { + var cloned = container.clone() + // Unmark script tags as already being eval'd so they can get executed again + // when restored from cache. HAXX: Uses jQuery internal method. + cloned.find('script').each(function(){ + if (!this.src) $._data(this, 'globalEval', false) + }) + return cloned.contents() +} + +// Internal: Strip internal query params from parsed URL. +// +// Returns sanitized url.href String. +function stripInternalParams(url) { + url.search = url.search.replace(/([?&])(_pjax|_)=[^&]*/g, '').replace(/^&/, '') + return url.href.replace(/\?($|#)/, '$1') +} + +// Internal: Parse URL components and returns a Locationish object. +// +// url - String URL +// +// Returns HTMLAnchorElement that acts like Location. +function parseURL(url) { + var a = document.createElement('a') + a.href = url + return a +} + +// Internal: Return the `href` component of given URL object with the hash +// portion removed. +// +// location - Location or HTMLAnchorElement +// +// Returns String +function stripHash(location) { + return location.href.replace(/#.*/, '') +} + +// Internal: Build options Object for arguments. +// +// For convenience the first parameter can be either the container or +// the options object. +// +// Examples +// +// optionsFor('#container') +// // => {container: '#container'} +// +// optionsFor('#container', {push: true}) +// // => {container: '#container', push: true} +// +// optionsFor({container: '#container', push: true}) +// // => {container: '#container', push: true} +// +// Returns options Object. +function optionsFor(container, options) { + if (container && options) { + options = $.extend({}, options) + options.container = container + return options + } else if ($.isPlainObject(container)) { + return container + } else { + return {container: container} + } +} + +// Internal: Filter and find all elements matching the selector. +// +// Where $.fn.find only matches descendants, findAll will test all the +// top level elements in the jQuery object as well. +// +// elems - jQuery object of Elements +// selector - String selector to match +// +// Returns a jQuery object. +function findAll(elems, selector) { + return elems.filter(selector).add(elems.find(selector)) +} + +function parseHTML(html) { + return $.parseHTML(html, document, true) +} + +// Internal: Extracts container and metadata from response. +// +// 1. Extracts X-PJAX-URL header if set +// 2. Extracts inline tags +// 3. Builds response Element and extracts fragment if set +// +// data - String response data +// xhr - XHR response +// options - pjax options Object +// +// Returns an Object with url, title, and contents keys. +function extractContainer(data, xhr, options) { + var obj = {}, fullDocument = /<html/i.test(data) + + // Prefer X-PJAX-URL header if it was set, otherwise fallback to + // using the original requested url. + var serverUrl = xhr.getResponseHeader('X-PJAX-URL') + obj.url = serverUrl ? stripInternalParams(parseURL(serverUrl)) : options.requestUrl + + var $head, $body + // Attempt to parse response html into elements + if (fullDocument) { + $body = $(parseHTML(data.match(/<body[^>]*>([\s\S.]*)<\/body>/i)[0])) + var head = data.match(/<head[^>]*>([\s\S.]*)<\/head>/i) + $head = head != null ? $(parseHTML(head[0])) : $body + } else { + $head = $body = $(parseHTML(data)) + } + + // If response data is empty, return fast + if ($body.length === 0) + return obj + + // If there's a <title> tag in the header, use it as + // the page's title. + obj.title = findAll($head, 'title').last().text() + + if (options.fragment) { + var $fragment = $body + // If they specified a fragment, look for it in the response + // and pull it out. + if (options.fragment !== 'body') { + $fragment = findAll($fragment, options.fragment).first() + } + + if ($fragment.length) { + obj.contents = options.fragment === 'body' ? $fragment : $fragment.contents() + + // If there's no title, look for data-title and title attributes + // on the fragment + if (!obj.title) + obj.title = $fragment.attr('title') || $fragment.data('title') + } + + } else if (!fullDocument) { + obj.contents = $body + } + + // Clean up any <title> tags + if (obj.contents) { + // Remove any parent title elements + obj.contents = obj.contents.not(function() { return $(this).is('title') }) + + // Then scrub any titles from their descendants + obj.contents.find('title').remove() + + // Gather all script[src] elements + obj.scripts = findAll(obj.contents, 'script[src]').remove() + obj.contents = obj.contents.not(obj.scripts) + } + + // Trim any whitespace off the title + if (obj.title) obj.title = $.trim(obj.title) + + return obj +} + +// Load an execute scripts using standard script request. +// +// Avoids jQuery's traditional $.getScript which does a XHR request and +// globalEval. +// +// scripts - jQuery object of script Elements +// +// Returns nothing. +function executeScriptTags(scripts) { + if (!scripts) return + + var existingScripts = $('script[src]') + + scripts.each(function() { + var src = this.src + var matchedScripts = existingScripts.filter(function() { + return this.src === src + }) + if (matchedScripts.length) return + + var script = document.createElement('script') + var type = $(this).attr('type') + if (type) script.type = type + script.src = $(this).attr('src') + document.head.appendChild(script) + }) +} + +// Internal: History DOM caching class. +var cacheMapping = {} +var cacheForwardStack = [] +var cacheBackStack = [] + +// Push previous state id and container contents into the history +// cache. Should be called in conjunction with `pushState` to save the +// previous container contents. +// +// id - State ID Number +// value - DOM Element to cache +// +// Returns nothing. +function cachePush(id, value) { + cacheMapping[id] = value + cacheBackStack.push(id) + + // Remove all entries in forward history stack after pushing a new page. + trimCacheStack(cacheForwardStack, 0) + + // Trim back history stack to max cache length. + trimCacheStack(cacheBackStack, pjax.defaults.maxCacheLength) +} + +// Shifts cache from directional history cache. Should be +// called on `popstate` with the previous state id and container +// contents. +// +// direction - "forward" or "back" String +// id - State ID Number +// value - DOM Element to cache +// +// Returns nothing. +function cachePop(direction, id, value) { + var pushStack, popStack + cacheMapping[id] = value + + if (direction === 'forward') { + pushStack = cacheBackStack + popStack = cacheForwardStack + } else { + pushStack = cacheForwardStack + popStack = cacheBackStack + } + + pushStack.push(id) + id = popStack.pop() + if (id) delete cacheMapping[id] + + // Trim whichever stack we just pushed to to max cache length. + trimCacheStack(pushStack, pjax.defaults.maxCacheLength) +} + +// Trim a cache stack (either cacheBackStack or cacheForwardStack) to be no +// longer than the specified length, deleting cached DOM elements as necessary. +// +// stack - Array of state IDs +// length - Maximum length to trim to +// +// Returns nothing. +function trimCacheStack(stack, length) { + while (stack.length > length) + delete cacheMapping[stack.shift()] +} + +// Public: Find version identifier for the initial page load. +// +// Returns String version or undefined. +function findVersion() { + return $('meta').filter(function() { + var name = $(this).attr('http-equiv') + return name && name.toUpperCase() === 'X-PJAX-VERSION' + }).attr('content') +} + +// Install pjax functions on $.pjax to enable pushState behavior. +// +// Does nothing if already enabled. +// +// Examples +// +// $.pjax.enable() +// +// Returns nothing. +function enable() { + $.fn.pjax = fnPjax + $.pjax = pjax + $.pjax.enable = $.noop + $.pjax.disable = disable + $.pjax.click = handleClick + $.pjax.submit = handleSubmit + $.pjax.reload = pjaxReload + $.pjax.defaults = { + timeout: 650, + push: true, + replace: false, + type: 'GET', + dataType: 'html', + scrollTo: 0, + maxCacheLength: 20, + version: findVersion + } + $(window).on('popstate.pjax', onPjaxPopstate) +} + +// Disable pushState behavior. +// +// This is the case when a browser doesn't support pushState. It is +// sometimes useful to disable pushState for debugging on a modern +// browser. +// +// Examples +// +// $.pjax.disable() +// +// Returns nothing. +function disable() { + $.fn.pjax = function() { return this } + $.pjax = fallbackPjax + $.pjax.enable = enable + $.pjax.disable = $.noop + $.pjax.click = $.noop + $.pjax.submit = $.noop + $.pjax.reload = function() { window.location.reload() } + + $(window).off('popstate.pjax', onPjaxPopstate) +} + + +// Add the state property to jQuery's event object so we can use it in +// $(window).bind('popstate') +if ($.event.props && $.inArray('state', $.event.props) < 0) { + $.event.props.push('state') +} else if (!('state' in $.Event.prototype)) { + $.event.addProp('state') +} + +// Is pjax supported by this browser? +$.support.pjax = + window.history && window.history.pushState && window.history.replaceState && + // pushState isn't reliable on iOS until 5. + !navigator.userAgent.match(/((iPod|iPhone|iPad).+\bOS\s+[1-4]\D|WebApps\/.+CFNetwork)/) + +if ($.support.pjax) { + enable() +} else { + disable() +} + +})(jQuery)