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Diffstat (limited to 'tools/addon-sdk-1.12/lib/sdk/widget.js')
| -rw-r--r-- | tools/addon-sdk-1.12/lib/sdk/widget.js | 938 |
1 files changed, 0 insertions, 938 deletions
diff --git a/tools/addon-sdk-1.12/lib/sdk/widget.js b/tools/addon-sdk-1.12/lib/sdk/widget.js deleted file mode 100644 index f1236aa..0000000 --- a/tools/addon-sdk-1.12/lib/sdk/widget.js +++ /dev/null @@ -1,938 +0,0 @@ -/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/* vim:set ts=2 sw=2 sts=2 et: */ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -"use strict"; - -module.metadata = { - "stability": "stable" -}; - -// Widget content types -const CONTENT_TYPE_URI = 1; -const CONTENT_TYPE_HTML = 2; -const CONTENT_TYPE_IMAGE = 3; - -const ERR_CONTENT = "No content or contentURL property found. Widgets must " - + "have one or the other.", - ERR_LABEL = "The widget must have a non-empty label property.", - ERR_ID = "You have to specify a unique value for the id property of " + - "your widget in order for the application to remember its " + - "position.", - ERR_DESTROYED = "The widget has been destroyed and can no longer be used."; - -// Supported events, mapping from DOM event names to our event names -const EVENTS = { - "click": "click", - "mouseover": "mouseover", - "mouseout": "mouseout", -}; - -if (!require("./system/xul-app").is("Firefox")) { - throw new Error([ - "The widget 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("")); -} - -const { validateOptions } = require("./deprecated/api-utils"); -const panels = require("./panel"); -const { EventEmitter, EventEmitterTrait } = require("./deprecated/events"); -const { Trait } = require("./deprecated/traits"); -const LightTrait = require('./deprecated/light-traits').Trait; -const { Loader, Symbiont } = require("./content/content"); -const { Cortex } = require('./deprecated/cortex'); -const windowsAPI = require("./windows"); -const { WindowTracker } = require("./deprecated/window-utils"); -const { isBrowser } = require("./window/utils"); -const { setTimeout } = require("./timers"); -const unload = require("./system/unload"); -const { uuid } = require("./util/uuid"); - -// Data types definition -const valid = { - number: { is: ["null", "undefined", "number"] }, - string: { is: ["null", "undefined", "string"] }, - id: { - is: ["string"], - ok: function (v) v.length > 0, - msg: ERR_ID, - readonly: true - }, - label: { - is: ["string"], - ok: function (v) v.length > 0, - msg: ERR_LABEL - }, - panel: { - is: ["null", "undefined", "object"], - ok: function(v) !v || v instanceof panels.Panel - }, - width: { - is: ["null", "undefined", "number"], - map: function (v) { - if (null === v || undefined === v) v = 16; - return v; - }, - defaultValue: 16 - }, - allow: { - is: ["null", "undefined", "object"], - map: function (v) { - if (!v) v = { script: true }; - return v; - }, - get defaultValue() ({ script: true }) - }, -}; - -// Widgets attributes definition -let widgetAttributes = { - label: valid.label, - id: valid.id, - tooltip: valid.string, - width: valid.width, - content: valid.string, - panel: valid.panel, - allow: valid.allow -}; - -// Import data definitions from loader, but don't compose with it as Model -// functions allow us to recreate easily all Loader code. -let loaderAttributes = require("./content/loader").validationAttributes; -for (let i in loaderAttributes) - widgetAttributes[i] = loaderAttributes[i]; - -widgetAttributes.contentURL.optional = true; - -// Widgets public events list, that are automatically binded in options object -const WIDGET_EVENTS = [ - "click", - "mouseover", - "mouseout", - "error", - "message", - "attach" -]; - -// `Model` utility functions that help creating these various Widgets objects -let model = { - - // Validate one attribute using api-utils.js:validateOptions function - _validate: function _validate(name, suspect, validation) { - let $1 = {}; - $1[name] = suspect; - let $2 = {}; - $2[name] = validation; - return validateOptions($1, $2)[name]; - }, - - /** - * This method has two purposes: - * 1/ Validate and define, on a given object, a set of attribute - * 2/ Emit a "change" event on this object when an attribute is changed - * - * @params {Object} object - * Object on which we can bind attributes on and watch for their changes. - * This object must have an EventEmitter interface, or, at least `_emit` - * method - * @params {Object} attrs - * Dictionary of attributes definition following api-utils:validateOptions - * scheme - * @params {Object} values - * Dictionary of attributes default values - */ - setAttributes: function setAttributes(object, attrs, values) { - let properties = {}; - for (let name in attrs) { - let value = values[name]; - let req = attrs[name]; - - // Retrieve default value from typedef if the value is not defined - if ((typeof value == "undefined" || value == null) && req.defaultValue) - value = req.defaultValue; - - // Check for valid value if value is defined or mandatory - if (!req.optional || typeof value != "undefined") - value = model._validate(name, value, req); - - // In any case, define this property on `object` - let property = null; - if (req.readonly) { - property = { - value: value, - writable: false, - enumerable: true, - configurable: false - }; - } - else { - property = model._createWritableProperty(name, value); - } - - properties[name] = property; - } - Object.defineProperties(object, properties); - }, - - // Generate ES5 property definition for a given attribute - _createWritableProperty: function _createWritableProperty(name, value) { - return { - get: function () { - return value; - }, - set: function (newValue) { - value = newValue; - // The main goal of all this Model stuff is here: - // We want to forward all changes to some listeners - this._emit("change", name, value); - }, - enumerable: true, - configurable: false - }; - }, - - /** - * Automagically register listeners in options dictionary - * by detecting listener attributes with name starting with `on` - * - * @params {Object} object - * Target object that need to follow EventEmitter interface, or, at least, - * having `on` method. - * @params {Array} events - * List of events name to automatically bind. - * @params {Object} listeners - * Dictionary of event listener functions to register. - */ - setEvents: function setEvents(object, events, listeners) { - for (let i = 0, l = events.length; i < l; i++) { - let name = events[i]; - let onName = "on" + name[0].toUpperCase() + name.substr(1); - if (!listeners[onName]) - continue; - object.on(name, listeners[onName].bind(object)); - } - } - -}; - - -/** - * Main Widget class: entry point of the widget API - * - * Allow to control all widget across all existing windows with a single object. - * Widget.getView allow to retrieve a WidgetView instance to control a widget - * specific to one window. - */ -const WidgetTrait = LightTrait.compose(EventEmitterTrait, LightTrait({ - - _initWidget: function _initWidget(options) { - model.setAttributes(this, widgetAttributes, options); - - browserManager.validate(this); - - // We must have at least content or contentURL defined - if (!(this.content || this.contentURL)) - throw new Error(ERR_CONTENT); - - this._views = []; - - // Set tooltip to label value if we don't have tooltip defined - if (!this.tooltip) - this.tooltip = this.label; - - model.setEvents(this, WIDGET_EVENTS, options); - - this.on('change', this._onChange.bind(this)); - - let self = this; - this._port = EventEmitterTrait.create({ - emit: function () { - let args = arguments; - self._views.forEach(function(v) v.port.emit.apply(v.port, args)); - } - }); - // expose wrapped port, that exposes only public properties. - this._port._public = Cortex(this._port); - - // Register this widget to browser manager in order to create new widget on - // all new windows - browserManager.addItem(this); - }, - - _onChange: function _onChange(name, value) { - // Set tooltip to label value if we don't have tooltip defined - if (name == 'tooltip' && !value) { - // we need to change tooltip again in order to change the value of the - // attribute itself - this.tooltip = this.label; - return; - } - - // Forward attributes changes to WidgetViews - if (['width', 'tooltip', 'content', 'contentURL'].indexOf(name) != -1) { - this._views.forEach(function(v) v[name] = value); - } - }, - - _onEvent: function _onEvent(type, eventData) { - this._emit(type, eventData); - }, - - _createView: function _createView() { - // Create a new WidgetView instance - let view = WidgetView(this); - - // Keep a reference to it - this._views.push(view); - - return view; - }, - - // a WidgetView instance is destroyed - _onViewDestroyed: function _onViewDestroyed(view) { - let idx = this._views.indexOf(view); - this._views.splice(idx, 1); - }, - - /** - * Called on browser window closed, to destroy related WidgetViews - * @params {ChromeWindow} window - * Window that has been closed - */ - _onWindowClosed: function _onWindowClosed(window) { - for each (let view in this._views) { - if (view._isInChromeWindow(window)) { - view.destroy(); - break; - } - } - }, - - /** - * Get the WidgetView instance related to a BrowserWindow instance - * @params {BrowserWindow} window - * BrowserWindow reference from "windows" module - */ - getView: function getView(window) { - for each (let view in this._views) { - if (view._isInWindow(window)) { - return view._public; - } - } - return null; - }, - - get port() this._port._public, - set port(v) {}, // Work around Cortex failure with getter without setter - // See bug 653464 - _port: null, - - postMessage: function postMessage(message) { - this._views.forEach(function(v) v.postMessage(message)); - }, - - destroy: function destroy() { - if (this.panel) - this.panel.destroy(); - - // Dispatch destroy calls to views - // we need to go backward as we remove items from this array in - // _onViewDestroyed - for (let i = this._views.length - 1; i >= 0; i--) - this._views[i].destroy(); - - // Unregister widget to stop creating it over new windows - // and allow creation of new widget with same id - browserManager.removeItem(this); - } - -})); - -// Widget constructor -const Widget = function Widget(options) { - let w = WidgetTrait.create(Widget.prototype); - w._initWidget(options); - - // Return a Cortex of widget in order to hide private attributes like _onEvent - let _public = Cortex(w); - unload.ensure(_public, "destroy"); - return _public; -} -exports.Widget = Widget; - - - -/** - * WidgetView is an instance of a widget for a specific window. - * - * This is an external API that can be retrieved by calling Widget.getView or - * by watching `attach` event on Widget. - */ -const WidgetViewTrait = LightTrait.compose(EventEmitterTrait, LightTrait({ - - // Reference to the matching WidgetChrome - // set right after constructor call - _chrome: null, - - // Public interface of the WidgetView, passed in `attach` event or in - // Widget.getView - _public: null, - - _initWidgetView: function WidgetView__initWidgetView(baseWidget) { - this._baseWidget = baseWidget; - - model.setAttributes(this, widgetAttributes, baseWidget); - - this.on('change', this._onChange.bind(this)); - - let self = this; - this._port = EventEmitterTrait.create({ - emit: function () { - if (!self._chrome) - throw new Error(ERR_DESTROYED); - self._chrome.update(self._baseWidget, "emit", arguments); - } - }); - // expose wrapped port, that exposes only public properties. - this._port._public = Cortex(this._port); - - this._public = Cortex(this); - }, - - // Called by WidgetChrome, when the related Worker is applied to the document, - // so that we can start sending events to it - _onWorkerReady: function () { - // Emit an `attach` event with a WidgetView instance without private attrs - this._baseWidget._emit("attach", this._public); - }, - - _onChange: function WidgetView__onChange(name, value) { - if (name == 'tooltip' && !value) { - this.tooltip = this.label; - return; - } - - // Forward attributes changes to WidgetChrome instance - if (['width', 'tooltip', 'content', 'contentURL'].indexOf(name) != -1) { - this._chrome.update(this._baseWidget, name, value); - } - }, - - _onEvent: function WidgetView__onEvent(type, eventData, domNode) { - // Dispatch event in view - this._emit(type, eventData); - - // And forward it to the main Widget object - if ("click" == type || type.indexOf("mouse") == 0) - this._baseWidget._onEvent(type, this._public); - else - this._baseWidget._onEvent(type, eventData); - - // Special case for click events: if the widget doesn't have a click - // handler, but it does have a panel, display the panel. - if ("click" == type && !this._listeners("click").length && this.panel) - this.panel.show(domNode); - }, - - _isInWindow: function WidgetView__isInWindow(window) { - return windowsAPI.BrowserWindow({ - window: this._chrome.window - }) == window; - }, - - _isInChromeWindow: function WidgetView__isInChromeWindow(window) { - return this._chrome.window == window; - }, - - _onPortEvent: function WidgetView__onPortEvent(args) { - let port = this._port; - port._emit.apply(port, args); - let basePort = this._baseWidget._port; - basePort._emit.apply(basePort, args); - }, - - get port() this._port._public, - set port(v) {}, // Work around Cortex failure with getter without setter - // See bug 653464 - _port: null, - - postMessage: function WidgetView_postMessage(message) { - if (!this._chrome) - throw new Error(ERR_DESTROYED); - this._chrome.update(this._baseWidget, "postMessage", message); - }, - - destroy: function WidgetView_destroy() { - this._chrome.destroy(); - delete this._chrome; - this._baseWidget._onViewDestroyed(this); - this._emit("detach"); - } - -})); - -const WidgetView = function WidgetView(baseWidget) { - let w = WidgetViewTrait.create(WidgetView.prototype); - w._initWidgetView(baseWidget); - return w; -} - - - -/** - * Keeps track of all browser windows. - * Exposes methods for adding/removing widgets - * across all open windows (and future ones). - * Create a new instance of BrowserWindow per window. - */ -let browserManager = { - items: [], - windows: [], - - // Registers the manager to listen for window openings and closings. Note - // that calling this method can cause onTrack to be called immediately if - // there are open windows. - init: function () { - let windowTracker = new WindowTracker(this); - unload.ensure(windowTracker); - }, - - // Registers a window with the manager. This is a WindowTracker callback. - onTrack: function browserManager_onTrack(window) { - if (isBrowser(window)) { - let win = new BrowserWindow(window); - win.addItems(this.items); - this.windows.push(win); - } - }, - - // Unregisters a window from the manager. It's told to undo all - // modifications. This is a WindowTracker callback. Note that when - // WindowTracker is unloaded, it calls onUntrack for every currently opened - // window. The browserManager therefore doesn't need to specially handle - // unload itself, since unloading the browserManager means untracking all - // currently opened windows. - onUntrack: function browserManager_onUntrack(window) { - if (isBrowser(window)) { - this.items.forEach(function(i) i._onWindowClosed(window)); - for (let i = 0; i < this.windows.length; i++) { - if (this.windows[i].window == window) { - this.windows.splice(i, 1)[0]; - return; - } - } - - } - }, - - // Used to validate widget by browserManager before adding it, - // in order to check input very early in widget constructor - validate : function (item) { - let idx = this.items.indexOf(item); - if (idx > -1) - throw new Error("The widget " + item + " has already been added."); - if (item.id) { - let sameId = this.items.filter(function(i) i.id == item.id); - if (sameId.length > 0) - throw new Error("This widget ID is already used: " + item.id); - } else { - item.id = this.items.length; - } - }, - - // Registers an item with the manager. It's added to all currently registered - // windows, and when new windows are registered it will be added to them, too. - addItem: function browserManager_addItem(item) { - this.items.push(item); - this.windows.forEach(function (w) w.addItems([item])); - }, - - // Unregisters an item from the manager. It's removed from all windows that - // are currently registered. - removeItem: function browserManager_removeItem(item) { - let idx = this.items.indexOf(item); - if (idx > -1) - this.items.splice(idx, 1); - } -}; - - - -/** - * Keeps track of a single browser window. - * - * This is where the core of how a widget's content is added to a window lives. - */ -function BrowserWindow(window) { - this.window = window; - this.doc = window.document; -} - -BrowserWindow.prototype = { - - // Adds an array of items to the window. - addItems: function BW_addItems(items) { - items.forEach(this._addItemToWindow, this); - }, - - _addItemToWindow: function BW__addItemToWindow(baseWidget) { - // Create a WidgetView instance - let widget = baseWidget._createView(); - - // Create a WidgetChrome instance - let item = new WidgetChrome({ - widget: widget, - doc: this.doc, - window: this.window - }); - - widget._chrome = item; - - this._insertNodeInToolbar(item.node); - - // We need to insert Widget DOM Node before finishing widget view creation - // (because fill creates an iframe and tries to access its docShell) - item.fill(); - }, - - _insertNodeInToolbar: function BW__insertNodeInToolbar(node) { - // Add to the customization palette - let toolbox = this.doc.getElementById("navigator-toolbox"); - let palette = toolbox.palette; - palette.appendChild(node); - - // Search for widget toolbar by reading toolbar's currentset attribute - let container = null; - let toolbars = this.doc.getElementsByTagName("toolbar"); - let id = node.getAttribute("id"); - for (let i = 0, l = toolbars.length; i < l; i++) { - let toolbar = toolbars[i]; - if (toolbar.getAttribute("currentset").indexOf(id) == -1) - continue; - container = toolbar; - } - - // if widget isn't in any toolbar, add it to the addon-bar - // TODO: we may want some "first-launch" module to do this only on very - // first execution - if (!container) { - container = this.doc.getElementById("addon-bar"); - // TODO: find a way to make the following code work when we use "cfx run": - // http://mxr.mozilla.org/mozilla-central/source/browser/base/content/browser.js#8586 - // until then, force display of addon bar directly from sdk code - // https://bugzilla.mozilla.org/show_bug.cgi?id=627484 - if (container.collapsed) - this.window.toggleAddonBar(); - } - - // Now retrieve a reference to the next toolbar item - // by reading currentset attribute on the toolbar - let nextNode = null; - let currentSet = container.getAttribute("currentset"); - let ids = (currentSet == "__empty") ? [] : currentSet.split(","); - let idx = ids.indexOf(id); - if (idx != -1) { - for (let i = idx; i < ids.length; i++) { - nextNode = this.doc.getElementById(ids[i]); - if (nextNode) - break; - } - } - - // Finally insert our widget in the right toolbar and in the right position - container.insertItem(id, nextNode, null, false); - - // Update DOM in order to save position: which toolbar, and which position - // in this toolbar. But only do this the first time we add it to the toolbar - // Otherwise, this code will collide with other instance of Widget module - // during Firefox startup. See bug 685929. - if (ids.indexOf(id) == -1) { - container.setAttribute("currentset", container.currentSet); - // Save DOM attribute in order to save position on new window opened - this.window.document.persist(container.id, "currentset"); - } - } -} - - -/** - * Final Widget class that handles chrome DOM Node: - * - create initial DOM nodes - * - receive instruction from WidgetView through update method and update DOM - * - watch for DOM events and forward them to WidgetView - */ -function WidgetChrome(options) { - this.window = options.window; - this._doc = options.doc; - this._widget = options.widget; - this._symbiont = null; // set later - this.node = null; // set later - - this._createNode(); -} - -// Update a property of a widget. -WidgetChrome.prototype.update = function WC_update(updatedItem, property, value) { - switch(property) { - case "contentURL": - case "content": - this.setContent(); - break; - case "width": - this.node.style.minWidth = value + "px"; - this.node.querySelector("iframe").style.width = value + "px"; - break; - case "tooltip": - this.node.setAttribute("tooltiptext", value); - break; - case "postMessage": - this._symbiont.postMessage(value); - break; - case "emit": - let port = this._symbiont.port; - port.emit.apply(port, value); - break; - } -} - -// Add a widget to this window. -WidgetChrome.prototype._createNode = function WC__createNode() { - // XUL element container for widget - let node = this._doc.createElement("toolbaritem"); - let guid = String(uuid()); - - // Temporary work around require("self") failing on unit-test execution ... - let jetpackID = "testID"; - try { - jetpackID = require("./self").id; - } catch(e) {} - - // Compute an unique and stable widget id with jetpack id and widget.id - let id = "widget:" + jetpackID + "-" + this._widget.id; - node.setAttribute("id", id); - node.setAttribute("label", this._widget.label); - node.setAttribute("tooltiptext", this._widget.tooltip); - node.setAttribute("align", "center"); - // Bug 626326: Prevent customize toolbar context menu to appear - node.setAttribute("context", ""); - - // TODO move into a stylesheet, configurable by consumers. - // Either widget.style, exposing the style object, or a URL - // (eg, can load local stylesheet file). - node.setAttribute("style", [ - "overflow: hidden; margin: 1px 2px 1px 2px; padding: 0px;", - "min-height: 16px;", - ].join("")); - - node.style.minWidth = this._widget.width + "px"; - - this.node = node; -} - -// Initial population of a widget's content. -WidgetChrome.prototype.fill = function WC_fill() { - // Create element - var iframe = this._doc.createElement("iframe"); - iframe.setAttribute("type", "content"); - iframe.setAttribute("transparent", "transparent"); - iframe.style.overflow = "hidden"; - iframe.style.height = "16px"; - iframe.style.maxHeight = "16px"; - iframe.style.width = this._widget.width + "px"; - iframe.setAttribute("flex", "1"); - iframe.style.border = "none"; - iframe.style.padding = "0px"; - - // Do this early, because things like contentWindow are null - // until the node is attached to a document. - this.node.appendChild(iframe); - - // add event handlers - this.addEventHandlers(); - - // set content - this.setContent(); -} - -// Get widget content type. -WidgetChrome.prototype.getContentType = function WC_getContentType() { - if (this._widget.content) - return CONTENT_TYPE_HTML; - return (this._widget.contentURL && /\.(jpg|gif|png|ico)$/.test(this._widget.contentURL)) - ? CONTENT_TYPE_IMAGE : CONTENT_TYPE_URI; -} - -// Set widget content. -WidgetChrome.prototype.setContent = function WC_setContent() { - let type = this.getContentType(); - let contentURL = null; - - switch (type) { - case CONTENT_TYPE_HTML: - contentURL = "data:text/html;charset=utf-8," + encodeURIComponent(this._widget.content); - break; - case CONTENT_TYPE_URI: - contentURL = this._widget.contentURL; - break; - case CONTENT_TYPE_IMAGE: - let imageURL = this._widget.contentURL; - contentURL = "data:text/html;charset=utf-8,<html><body><img src='" + - encodeURI(imageURL) + "'></body></html>"; - break; - default: - throw new Error("The widget's type cannot be determined."); - } - - let iframe = this.node.firstElementChild; - - let self = this; - // Cleanup previously created symbiont (in case we are update content) - if (this._symbiont) - this._symbiont.destroy(); - - this._symbiont = Trait.compose(Symbiont.resolve({ - _onContentScriptEvent: "_onContentScriptEvent-not-used", - _onInit: "_initSymbiont" - }), { - // Overload `Symbiont._onInit` in order to know when the related worker - // is ready. - _onInit: function () { - this._initSymbiont(); - self._widget._onWorkerReady(); - }, - _onContentScriptEvent: function () { - // Redirect events to WidgetView - self._widget._onPortEvent(arguments); - } - })({ - frame: iframe, - contentURL: contentURL, - contentScriptFile: this._widget.contentScriptFile, - contentScript: this._widget.contentScript, - contentScriptWhen: this._widget.contentScriptWhen, - contentScriptOptions: this._widget.contentScriptOptions, - allow: this._widget.allow, - onMessage: function(message) { - setTimeout(function() { - self._widget._onEvent("message", message); - }, 0); - } - }); -} - -// Detect if document consists of a single image. -WidgetChrome._isImageDoc = function WC__isImageDoc(doc) { - return doc.body.childNodes.length == 1 && - doc.body.firstElementChild && - doc.body.firstElementChild.tagName == "IMG"; -} - -// Set up all supported events for a widget. -WidgetChrome.prototype.addEventHandlers = function WC_addEventHandlers() { - let contentType = this.getContentType(); - - let self = this; - let listener = function(e) { - // Ignore event firings that target the iframe. - if (e.target == self.node.firstElementChild) - return; - - // The widget only supports left-click for now, - // so ignore right-clicks. - if (e.type == "click" && e.button == 2) - return; - - // Proxy event to the widget - setTimeout(function() { - self._widget._onEvent(EVENTS[e.type], null, self.node); - }, 0); - }; - - this.eventListeners = {}; - let iframe = this.node.firstElementChild; - for (let type in EVENTS) { - iframe.addEventListener(type, listener, true, true); - - // Store listeners for later removal - this.eventListeners[type] = listener; - } - - // On document load, make modifications required for nice default - // presentation. - function loadListener(e) { - let containerStyle = self.window.getComputedStyle(self.node.parentNode); - // Ignore event firings that target the iframe - if (e.target == iframe) - return; - // Ignore about:blank loads - if (e.type == "load" && e.target.location == "about:blank") - return; - - // We may have had an unload event before that cleaned up the symbiont - if (!self._symbiont) - self.setContent(); - - let doc = e.target; - if (contentType == CONTENT_TYPE_IMAGE || WidgetChrome._isImageDoc(doc)) { - // Force image content to size. - // Add-on authors must size their images correctly. - doc.body.firstElementChild.style.width = self._widget.width + "px"; - doc.body.firstElementChild.style.height = "16px"; - } - - // Extend the add-on bar's default text styles to the widget. - doc.body.style.color = containerStyle.color; - doc.body.style.fontFamily = containerStyle.fontFamily; - doc.body.style.fontSize = containerStyle.fontSize; - doc.body.style.fontWeight = containerStyle.fontWeight; - doc.body.style.textShadow = containerStyle.textShadow; - // Allow all content to fill the box by default. - doc.body.style.margin = "0"; - } - iframe.addEventListener("load", loadListener, true); - this.eventListeners["load"] = loadListener; - - // Register a listener to unload symbiont if the toolbaritem is moved - // on user toolbars customization - function unloadListener(e) { - if (e.target.location == "about:blank") - return; - self._symbiont.destroy(); - self._symbiont = null; - // This may fail but not always, it depends on how the node is - // moved or removed - try { - self.setContent(); - } catch(e) {} - - } - - iframe.addEventListener("unload", unloadListener, true); - this.eventListeners["unload"] = unloadListener; -} - -// Remove and unregister the widget from everything -WidgetChrome.prototype.destroy = function WC_destroy(removedItems) { - // remove event listeners - for (let type in this.eventListeners) { - let listener = this.eventListeners[type]; - this.node.firstElementChild.removeEventListener(type, listener, true); - } - // remove dom node - this.node.parentNode.removeChild(this.node); - // cleanup symbiont - this._symbiont.destroy(); - // cleanup itself - this.eventListeners = null; - this._widget = null; - this._symbiont = null; -} - -// Init the browserManager only after setting prototypes and such above, because -// it will cause browserManager.onTrack to be called immediately if there are -// open windows. -browserManager.init(); 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