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Diffstat (limited to 'tools/addon-sdk-1.4/packages/api-utils/lib/tab-browser.js')
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1 files changed, 761 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.4/packages/api-utils/lib/tab-browser.js b/tools/addon-sdk-1.4/packages/api-utils/lib/tab-browser.js new file mode 100644 index 0000000..272a7c6 --- /dev/null +++ b/tools/addon-sdk-1.4/packages/api-utils/lib/tab-browser.js @@ -0,0 +1,761 @@ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (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.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Jetpack. + * + * The Initial Developer of the Original Code is Mozilla. + * Portions created by the Initial Developer are Copyright (C) 2010 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Atul Varma <atul@mozilla.com> + * Dietrich Ayala <dietrich@mozilla.com> + * Felipe Gomes <felipc@gmail.com> + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +"use strict"; +const {Cc,Ci,Cu} = require("chrome"); +var NetUtil = {}; +Cu.import("resource://gre/modules/NetUtil.jsm", NetUtil); +NetUtil = NetUtil.NetUtil; +const errors = require("./errors"); +const windowUtils = require("./window-utils"); +const apiUtils = require("./api-utils"); +const collection = require("./collection"); + +// TODO: The hard-coding of app-specific info here isn't very nice; +// ideally such app-specific info should be more decoupled, and the +// module should be extensible, allowing for support of new apps at +// runtime, perhaps by inspecting supported packages (e.g. via +// dynamically-named modules or package-defined extension points). + +if (!require("./xul-app").is("Firefox")) { + throw new Error([ + "The tab-browser module currently supports only Firefox. In the future ", + "it will support other applications. Please see ", + "https://bugzilla.mozilla.org/show_bug.cgi?id=560716 for more information." + ].join("")); +} + +function onBrowserLoad(callback, event) { + if (event.target && event.target.defaultView == this) { + this.removeEventListener("load", onBrowserLoad, true); + try { + require("timer").setTimeout(function () { + callback(event); + }, 10); + } catch (e) { console.exception(e); } + } +} + +// Utility function to open a new browser window. +function openBrowserWindow(callback, url) { + let ww = Cc["@mozilla.org/embedcomp/window-watcher;1"]. + getService(Ci.nsIWindowWatcher); + let urlString = Cc["@mozilla.org/supports-string;1"]. + createInstance(Ci.nsISupportsString); + urlString.data = url; + let window = ww.openWindow(null, "chrome://browser/content/browser.xul", + "_blank", "chrome,all,dialog=no", urlString); + if (callback) + window.addEventListener("load", onBrowserLoad.bind(window, callback), true); + + return window; +} + +// Open a URL in a new tab +exports.addTab = function addTab(url, options) { + if (!options) + options = {}; + options.url = url; + + options = apiUtils.validateOptions(options, { + // TODO: take URL object instead of string (bug 564524) + url: { + is: ["string"], + ok: function (v) !!v, + msg: "The url parameter must have be a non-empty string." + }, + inNewWindow: { + is: ["undefined", "null", "boolean"] + }, + inBackground: { + is: ["undefined", "null", "boolean"] + }, + onLoad: { + is: ["undefined", "null", "function"] + }, + isPinned: { + is: ["undefined", "boolean"] + } + }); + + var wm = Cc["@mozilla.org/appshell/window-mediator;1"] + .getService(Ci.nsIWindowMediator); + var win = wm.getMostRecentWindow("navigator:browser"); + if (!win || options.inNewWindow) { + openBrowserWindow(function(e) { + if(options.isPinned) { + //get the active tab in the recently created window + let mainWindow = e.target.defaultView; + mainWindow.gBrowser.pinTab(mainWindow.gBrowser.selectedTab); + } + require("./errors").catchAndLog(function(e) options.onLoad(e))(e); + }, options.url); + } else { + let tab = win.gBrowser.addTab(options.url); + if (!options.inBackground) + win.gBrowser.selectedTab = tab; + if (options.onLoad) { + let tabBrowser = win.gBrowser.getBrowserForTab(tab); + tabBrowser.addEventListener("load", function onLoad(e) { + if (e.target.defaultView.content.location == "about:blank") + return; + // remove event handler from addTab - don't want notified + // for subsequent loads in same tab. + tabBrowser.removeEventListener("load", onLoad, true); + require("./errors").catchAndLog(function(e) options.onLoad(e))(e); + }, true); + } + } +} + +// Iterate over a window's tabbrowsers +function tabBrowserIterator(window) { + var browsers = window.document.querySelectorAll("tabbrowser"); + for (var i = 0; i < browsers.length; i++) + yield browsers[i]; +} + +// Iterate over a tabbrowser's tabs +function tabIterator(tabbrowser) { + var tabs = tabbrowser.tabContainer; + for (var i = 0; i < tabs.children.length; i++) { + yield tabs.children[i]; + } +} + +// Tracker for all tabbrowsers across all windows, +// or a single tabbrowser if the window is given. +function Tracker(delegate, window) { + this._delegate = delegate; + this._browsers = []; + this._window = window; + this._windowTracker = new windowUtils.WindowTracker(this); + + require("./unload").ensure(this); +} +Tracker.prototype = { + __iterator__: function __iterator__() { + for (var i = 0; i < this._browsers.length; i++) + yield this._browsers[i]; + }, + get: function get(index) { + return this._browsers[index]; + }, + onTrack: function onTrack(window) { + if (this._window && window != this._window) + return; + + for (let browser in tabBrowserIterator(window)) + this._browsers.push(browser); + if (this._delegate) + for (let browser in tabBrowserIterator(window)) + this._delegate.onTrack(browser); + }, + onUntrack: function onUntrack(window) { + if (this._window && window != this._window) + return; + + for (let browser in tabBrowserIterator(window)) { + let index = this._browsers.indexOf(browser); + if (index != -1) + this._browsers.splice(index, 1); + else + console.error("internal error: browser tab not found"); + } + if (this._delegate) + for (let browser in tabBrowserIterator(window)) + this._delegate.onUntrack(browser); + }, + get length() { + return this._browsers.length; + }, + unload: function unload() { + this._windowTracker.unload(); + } +}; +exports.Tracker = apiUtils.publicConstructor(Tracker); + +// Tracker for all tabs across all windows, +// or a single window if it's given. +function TabTracker(delegate, window) { + this._delegate = delegate; + this._tabs = []; + this._tracker = new Tracker(this, window); + require("./unload").ensure(this); +} +TabTracker.prototype = { + _TAB_EVENTS: ["TabOpen", "TabClose"], + _safeTrackTab: function safeTrackTab(tab) { + this._tabs.push(tab); + try { + this._delegate.onTrack(tab); + } catch (e) { + console.exception(e); + } + }, + _safeUntrackTab: function safeUntrackTab(tab) { + var index = this._tabs.indexOf(tab); + if (index == -1) + console.error("internal error: tab not found"); + this._tabs.splice(index, 1); + try { + this._delegate.onUntrack(tab); + } catch (e) { + console.exception(e); + } + }, + handleEvent: function handleEvent(event) { + switch (event.type) { + case "TabOpen": + this._safeTrackTab(event.target); + break; + case "TabClose": + this._safeUntrackTab(event.target); + break; + default: + throw new Error("internal error: unknown event type: " + + event.type); + } + }, + onTrack: function onTrack(tabbrowser) { + for (let tab in tabIterator(tabbrowser)) + this._safeTrackTab(tab); + var self = this; + this._TAB_EVENTS.forEach( + function(eventName) { + tabbrowser.tabContainer.addEventListener(eventName, self, true); + }); + }, + onUntrack: function onUntrack(tabbrowser) { + for (let tab in tabIterator(tabbrowser)) + this._safeUntrackTab(tab); + var self = this; + this._TAB_EVENTS.forEach( + function(eventName) { + tabbrowser.tabContainer.removeEventListener(eventName, self, true); + }); + }, + unload: function unload() { + this._tracker.unload(); + } +}; +exports.TabTracker = apiUtils.publicConstructor(TabTracker); + +exports.whenContentLoaded = function whenContentLoaded(callback) { + var cb = require("./errors").catchAndLog(function eventHandler(event) { + if (event.target && event.target.defaultView) + callback(event.target.defaultView); + }); + + var tracker = new Tracker({ + onTrack: function(tabBrowser) { + tabBrowser.addEventListener("DOMContentLoaded", cb, false); + }, + onUntrack: function(tabBrowser) { + tabBrowser.removeEventListener("DOMContentLoaded", cb, false); + } + }); + + return tracker; +}; + +exports.__defineGetter__("activeTab", function() { + const wm = Cc["@mozilla.org/appshell/window-mediator;1"]. + getService(Ci.nsIWindowMediator); + let mainWindow = wm.getMostRecentWindow("navigator:browser"); + return mainWindow.gBrowser.selectedTab; +}); + +/******************* TabModule *********************/ + +// Supported tab events +const events = [ + "onActivate", + "onDeactivate", + "onOpen", + "onClose", + "onReady", + "onLoad", + "onPaint" +]; +exports.tabEvents = events; + +/** + * TabModule + * + * Constructor for a module that implements the tabs API + */ +let TabModule = exports.TabModule = function TabModule(window) { + let self = this; + /** + * Tab + * + * Safe object representing a tab. + */ + let tabConstructor = apiUtils.publicConstructor(function(element) { + if (!element) + throw new Error("no tab element."); + let win = element.ownerDocument.defaultView; + if (!win) + throw new Error("element has no window."); + if (window && win != window) + throw new Error("module's window and element's window don't match."); + let browser = win.gBrowser.getBrowserForTab(element); + + this.__defineGetter__("title", function() browser.contentDocument.title); + this.__defineGetter__("location", function() browser.contentDocument.location); + this.__defineSetter__("location", function(val) browser.contentDocument.location = val); + this.__defineGetter__("contentWindow", function() browser.contentWindow); + this.__defineGetter__("contentDocument", function() browser.contentDocument); + this.__defineGetter__("favicon", function() { + let pageURI = NetUtil.newURI(browser.contentDocument.location); + let fs = Cc["@mozilla.org/browser/favicon-service;1"]. + getService(Ci.nsIFaviconService); + let faviconURL; + try { + let faviconURI = fs.getFaviconForPage(pageURI); + faviconURL = fs.getFaviconDataAsDataURL(faviconURI); + } catch(ex) { + let data = getChromeURLContents("chrome://mozapps/skin/places/defaultFavicon.png"); + let encoded = browser.contentWindow.btoa(data); + faviconURL = "data:image/png;base64," + encoded; + } + return faviconURL; + }); + this.__defineGetter__("style", function() null); // TODO + this.__defineGetter__("index", function() win.gBrowser.getBrowserIndexForDocument(browser.contentDocument)); + this.__defineGetter__("thumbnail", function() getThumbnailCanvasForTab(element, browser.contentWindow)); + + this.close = function() win.gBrowser.removeTab(element); + this.move = function(index) { + win.gBrowser.moveTabTo(element, index); + }; + + this.__defineGetter__("isPinned", function() element.pinned); + this.pin = function() win.gBrowser.pinTab(element); + this.unpin = function() win.gBrowser.unpinTab(element); + + // Set up the event handlers + let tab = this; + events.filter(function(e) e != "onOpen").forEach(function(e) { + // create a collection for each event + collection.addCollectionProperty(tab, e); + // make tabs setter for each event, for adding via property assignment + tab.__defineSetter__(e, function(val) tab[e].add(val)); + }); + + // listen for events, filtered on this tab + eventsTabDelegate.addTabDelegate(this); + }); + + /** + * tabs.activeTab + */ + this.__defineGetter__("activeTab", function() { + try { + return window ? tabConstructor(window.gBrowser.selectedTab) + : tabConstructor(exports.activeTab); + } + catch (e) { } + return null; + }); + this.__defineSetter__("activeTab", function(tab) { + let [tabElement, win] = getElementAndWindowForTab(tab, window); + if (tabElement) { + // set as active tab + win.gBrowser.selectedTab = tabElement; + // focus the window + win.focus(); + } + }); + + this.open = function TM_open(options) { + open(options, tabConstructor, window); + } + + // Set up the event handlers + events.forEach(function(eventHandler) { + // create a collection for each event + collection.addCollectionProperty(self, eventHandler); + // make tabs setter for each event, for adding via property assignment + self.__defineSetter__(eventHandler, function(val) self[eventHandler].add(val)); + }); + + // Tracker that listens for tab events, and proxies + // them to registered event listeners. + let eventsTabDelegate = { + selectedTab: null, + tabs: [], + addTabDelegate: function TETT_addTabDelegate(tabObj) { + this.tabs.push(tabObj); + }, + pushTabEvent: function TETT_pushTabEvent(event, tab) { + for (let callback in self[event]) { + require("./errors").catchAndLog(function(tab) { + callback(new tabConstructor(tab)); + })(tab); + } + + if (event != "onOpen") { + this.tabs.forEach(function(tabObj) { + if (tabObj[event].length) { + let [tabEl,] = getElementAndWindowForTab(tabObj, window); + if (tabEl == tab) { + for (let callback in tabObj[event]) + require("./errors").catchAndLog(function() callback())(); + } + } + // if being closed, remove the tab object from the cache + // of tabs to notify about events. + if (event == "onClose") + this.tabs.splice(this.tabs.indexOf(tabObj), 1); + }, this); + } + }, + unload: function() { + this.selectedTab = null; + this.tabs.splice(0); + } + }; + require("./unload").ensure(eventsTabDelegate); + + let eventsTabTracker = new ModuleTabTracker({ + onTrack: function TETT_onTrack(tab) { + eventsTabDelegate.pushTabEvent("onOpen", tab); + }, + onUntrack: function TETT_onUntrack(tab) { + eventsTabDelegate.pushTabEvent("onClose", tab); + }, + onSelect: function TETT_onSelect(tab) { + if (eventsTabDelegate.selectedTab) + eventsTabDelegate.pushTabEvent("onDeactivate", tab); + + eventsTabDelegate.selectedTab = new tabConstructor(tab); + + eventsTabDelegate.pushTabEvent("onActivate", tab); + }, + onReady: function TETT_onReady(tab) { + eventsTabDelegate.pushTabEvent("onReady", tab); + }, + onLoad: function TETT_onLoad(tab) { + eventsTabDelegate.pushTabEvent("onLoad", tab); + }, + onPaint: function TETT_onPaint(tab) { + eventsTabDelegate.pushTabEvent("onPaint", tab); + } + }, window); + require("./unload").ensure(eventsTabTracker); + + // Iterator for all tabs + this.__iterator__ = function tabsIterator() { + for (let i = 0; i < eventsTabTracker._tabs.length; i++) + yield tabConstructor(eventsTabTracker._tabs[i]); + } + + this.__defineGetter__("length", function() eventsTabTracker._tabs.length); + + // Cleanup when unloaded + this.unload = function TM_unload() { + // Unregister tabs event listeners + events.forEach(function(e) self[e] = []); + } + require("./unload").ensure(this); + +} // End of TabModule constructor + +/** + * tabs.open - open a URL in a new tab + */ +function open(options, tabConstructor, window) { + if (typeof options === "string") + options = { url: options }; + + options = apiUtils.validateOptions(options, { + url: { + is: ["string"] + }, + inNewWindow: { + is: ["undefined", "boolean"] + }, + inBackground: { + is: ["undefined", "boolean"] + }, + isPinned: { + is: ["undefined", "boolean"] + }, + onOpen: { + is: ["undefined", "function"] + } + }); + + if (window) + options.inNewWindow = false; + + let win = window || require("./window-utils").activeBrowserWindow; + + if (!win || options.inNewWindow) + openURLInNewWindow(options, tabConstructor); + else + openURLInNewTab(options, win, tabConstructor); +} + +function openURLInNewWindow(options, tabConstructor) { + let addTabOptions = { + inNewWindow: true + }; + if (options.onOpen) { + addTabOptions.onLoad = function(e) { + let win = e.target.defaultView; + let tabEl = win.gBrowser.tabContainer.childNodes[0]; + let tabBrowser = win.gBrowser.getBrowserForTab(tabEl); + tabBrowser.addEventListener("load", function onLoad(e) { + tabBrowser.removeEventListener("load", onLoad, true); + let tab = tabConstructor(tabEl); + require("./errors").catchAndLog(function(e) options.onOpen(e))(tab); + }, true); + }; + } + if (options.isPinned) { + addTabOptions.isPinned = true; + } + exports.addTab(options.url.toString(), addTabOptions); +} + +function openURLInNewTab(options, window, tabConstructor) { + window.focus(); + let tabEl = window.gBrowser.addTab(options.url.toString()); + if (!options.inBackground) + window.gBrowser.selectedTab = tabEl; + if (options.isPinned) + window.gBrowser.pinTab(tabEl); + if (options.onOpen) { + let tabBrowser = window.gBrowser.getBrowserForTab(tabEl); + tabBrowser.addEventListener("load", function onLoad(e) { + // remove event handler from addTab - don't want to be notified + // for subsequent loads in same tab. + tabBrowser.removeEventListener("load", onLoad, true); + let tab = tabConstructor(tabEl); + require("./timer").setTimeout(function() { + require("./errors").catchAndLog(function(tab) options.onOpen(tab))(tab); + }, 10); + }, true); + } +} + +function getElementAndWindowForTab(tabObj, window) { + // iterate over open windows, or use single window if provided + let windowIterator = window ? function() { yield window; } + : require("./window-utils").windowIterator; + for (let win in windowIterator()) { + if (win.gBrowser) { + // find the tab element at tab.index + let index = win.gBrowser.getBrowserIndexForDocument(tabObj.contentDocument); + if (index > -1) + return [win.gBrowser.tabContainer.getItemAtIndex(index), win]; + } + } + return [null, null]; +} + +// Tracker for all tabs across all windows +// This is tab-browser.TabTracker, but with +// support for additional events added. +function ModuleTabTracker(delegate, window) { + this._delegate = delegate; + this._tabs = []; + this._tracker = new Tracker(this, window); + require("./unload").ensure(this); +} +ModuleTabTracker.prototype = { + _TAB_EVENTS: ["TabOpen", "TabClose", "TabSelect", "DOMContentLoaded", + "load", "MozAfterPaint"], + _safeTrackTab: function safeTrackTab(tab) { + tab.addEventListener("load", this, false); + tab.linkedBrowser.addEventListener("MozAfterPaint", this, false); + this._tabs.push(tab); + try { + this._delegate.onTrack(tab); + } catch (e) { + console.exception(e); + } + }, + _safeUntrackTab: function safeUntrackTab(tab) { + tab.removeEventListener("load", this, false); + tab.linkedBrowser.removeEventListener("MozAfterPaint", this, false); + var index = this._tabs.indexOf(tab); + if (index == -1) + throw new Error("internal error: tab not found"); + this._tabs.splice(index, 1); + try { + this._delegate.onUntrack(tab); + } catch (e) { + console.exception(e); + } + }, + _safeSelectTab: function safeSelectTab(tab) { + var index = this._tabs.indexOf(tab); + if (index == -1) + console.error("internal error: tab not found"); + try { + if (this._delegate.onSelect) + this._delegate.onSelect(tab); + } catch (e) { + console.exception(e); + } + }, + _safeDOMContentLoaded: function safeDOMContentLoaded(event) { + let tabBrowser = event.currentTarget; + let tabBrowserIndex = tabBrowser.getBrowserIndexForDocument(event.target); + // TODO: I'm seeing this when loading data url images + if (tabBrowserIndex == -1) + return; + let tab = tabBrowser.tabContainer.getItemAtIndex(tabBrowserIndex); + let index = this._tabs.indexOf(tab); + if (index == -1) + console.error("internal error: tab not found"); + try { + if (this._delegate.onReady) + this._delegate.onReady(tab); + } catch (e) { + console.exception(e); + } + }, + _safeLoad: function safeLoad(event) { + let tab = event.target; + let index = this._tabs.indexOf(tab); + if (index == -1) + console.error("internal error: tab not found"); + try { + if (this._delegate.onLoad) + this._delegate.onLoad(tab); + } catch (e) { + console.exception(e); + } + }, + _safeMozAfterPaint: function safeMozAfterPaint(event) { + let win = event.currentTarget.ownerDocument.defaultView; + let tabIndex = win.gBrowser.getBrowserIndexForDocument(event.target.document); + if (tabIndex == -1) + return; + let tab = win.gBrowser.tabContainer.getItemAtIndex(tabIndex); + let index = this._tabs.indexOf(tab); + if (index == -1) + console.error("internal error: tab not found"); + try { + if (this._delegate.onPaint) + this._delegate.onPaint(tab); + } catch (e) { + console.exception(e); + } + }, + handleEvent: function handleEvent(event) { + switch (event.type) { + case "TabOpen": + this._safeTrackTab(event.target); + break; + case "TabClose": + this._safeUntrackTab(event.target); + break; + case "TabSelect": + this._safeSelectTab(event.target); + break; + case "DOMContentLoaded": + this._safeDOMContentLoaded(event); + break; + case "load": + this._safeLoad(event); + break; + case "MozAfterPaint": + this._safeMozAfterPaint(event); + break; + default: + throw new Error("internal error: unknown event type: " + + event.type); + } + }, + onTrack: function onTrack(tabbrowser) { + for (let tab in tabIterator(tabbrowser)) + this._safeTrackTab(tab); + tabbrowser.tabContainer.addEventListener("TabOpen", this, false); + tabbrowser.tabContainer.addEventListener("TabClose", this, false); + tabbrowser.tabContainer.addEventListener("TabSelect", this, false); + tabbrowser.ownerDocument.defaultView.gBrowser.addEventListener("DOMContentLoaded", this, false); + }, + onUntrack: function onUntrack(tabbrowser) { + for (let tab in tabIterator(tabbrowser)) + this._safeUntrackTab(tab); + tabbrowser.tabContainer.removeEventListener("TabOpen", this, false); + tabbrowser.tabContainer.removeEventListener("TabClose", this, false); + tabbrowser.tabContainer.removeEventListener("TabSelect", this, false); + tabbrowser.ownerDocument.defaultView.gBrowser.removeEventListener("DOMContentLoaded", this, false); + }, + unload: function unload() { + this._tracker.unload(); + } +}; + +// Utility to get a thumbnail canvas from a tab object +function getThumbnailCanvasForTab(tabEl, window) { + var thumbnail = window.document.createElementNS("http://www.w3.org/1999/xhtml", "canvas"); + thumbnail.mozOpaque = true; + window = tabEl.linkedBrowser.contentWindow; + thumbnail.width = Math.ceil(window.screen.availWidth / 5.75); + var aspectRatio = 0.5625; // 16:9 + thumbnail.height = Math.round(thumbnail.width * aspectRatio); + var ctx = thumbnail.getContext("2d"); + var snippetWidth = window.innerWidth * .6; + var scale = thumbnail.width / snippetWidth; + ctx.scale(scale, scale); + ctx.drawWindow(window, window.scrollX, window.scrollY, snippetWidth, snippetWidth * aspectRatio, "rgb(255,255,255)"); + return thumbnail; +} + +// Utility to return the contents of the target of a chrome URL +function getChromeURLContents(chromeURL) { + let io = Cc["@mozilla.org/network/io-service;1"]. + getService(Ci.nsIIOService); + let channel = io.newChannel(chromeURL, null, null); + let input = channel.open(); + let stream = Cc["@mozilla.org/binaryinputstream;1"]. + createInstance(Ci.nsIBinaryInputStream); + stream.setInputStream(input); + let str = stream.readBytes(input.available()); + stream.close(); + input.close(); + return str; +} |