pjs/browser/devtools/tilt/Tilt.jsm

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/* -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/***** 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 Tilt: A WebGL-based 3D visualization of a webpage.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Victor Porof <vporof@mozilla.com> (original author)
*
* 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 LGPL or the GPL. 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 *****/
/*global Components, Services, TiltGL, TiltUtils, TiltVisualizer */
"use strict";
const Cu = Components.utils;
// Tilt notifications dispatched through the nsIObserverService.
const TILT_NOTIFICATIONS = {
// Fires when Tilt completes the initialization.
INITIALIZED: "tilt-initialized",
// Fires when Tilt is destroyed.
DESTROYED: "tilt-destroyed",
// Fires when Tilt is shown (after a tab-switch).
SHOWN: "tilt-shown",
// Fires when Tilt is hidden (after a tab-switch).
HIDDEN: "tilt-hidden"
};
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource:///modules/devtools/TiltGL.jsm");
Cu.import("resource:///modules/devtools/TiltUtils.jsm");
Cu.import("resource:///modules/devtools/TiltVisualizer.jsm");
let EXPORTED_SYMBOLS = ["Tilt"];
/**
* Object managing instances of the visualizer.
*
* @param {Window} aWindow
* the chrome window used by each visualizer instance
*/
function Tilt(aWindow)
{
/**
* Save a reference to the top-level window.
*/
this.chromeWindow = aWindow;
/**
* All the instances of TiltVisualizer.
*/
this.visualizers = {};
/**
* Shortcut for accessing notifications strings.
*/
this.NOTIFICATIONS = TILT_NOTIFICATIONS;
}
Tilt.prototype = {
/**
* Initializes a visualizer for the current tab.
*/
initialize: function T_initialize()
{
let id = this.currentWindowId;
// if the visualizer for the current tab is already open, destroy it now
if (this.visualizers[id]) {
this.destroy(id);
return;
}
// create a visualizer instance for the current tab
this.visualizers[id] = new TiltVisualizer({
parentNode: this.chromeWindow.gBrowser.selectedBrowser.parentNode,
contentWindow: this.chromeWindow.gBrowser.selectedBrowser.contentWindow,
requestAnimationFrame: this.chromeWindow.mozRequestAnimationFrame,
inspectorUI: this.chromeWindow.InspectorUI
});
// make sure the visualizer object was initialized properly
if (!this.visualizers[id].isInitialized()) {
this.destroy(id);
return;
}
Services.obs.notifyObservers(null, TILT_NOTIFICATIONS.INITIALIZED, null);
},
/**
* Destroys a specific instance of the visualizer.
*
* @param {String} aId
* the identifier of the instance in the visualizers array
*/
destroy: function T_destroy(aId)
{
// if the visualizer is already destroyed, don't do anything
if (!this.visualizers[aId]) {
return;
}
this.visualizers[aId].removeOverlay();
this.visualizers[aId].cleanup();
this.visualizers[aId] = null;
this.chromeWindow.gBrowser.selectedBrowser.contentWindow.focus();
Services.obs.notifyObservers(null, TILT_NOTIFICATIONS.DESTROYED, null);
},
/**
* Handles any supplementary post-initialization work, done immediately
* after a TILT_NOTIFICATIONS.INITIALIZED notification.
*/
_whenInitialized: function T__whenInitialized()
{
this._whenShown();
},
/**
* Handles any supplementary post-destruction work, done immediately
* after a TILT_NOTIFICATIONS.DESTROYED notification.
*/
_whenDestroyed: function T__whenDestroyed()
{
this._whenHidden();
},
/**
* Handles any necessary changes done when the Tilt surface is shown,
* after a TILT_NOTIFICATIONS.SHOWN notification.
*/
_whenShown: function T__whenShown()
{
this.tiltButton.checked = true;
},
/**
* Handles any necessary changes done when the Tilt surface is hidden,
* after a TILT_NOTIFICATIONS.HIDDEN notification.
*/
_whenHidden: function T__whenHidden()
{
this.tiltButton.checked = false;
},
/**
* Handles the event fired when a tab is selected.
*/
_onTabSelect: function T__onTabSelect()
{
if (this.visualizers[this.currentWindowId]) {
Services.obs.notifyObservers(null, TILT_NOTIFICATIONS.SHOWN, null);
} else {
Services.obs.notifyObservers(null, TILT_NOTIFICATIONS.HIDDEN, null);
}
},
/**
* A node was selected in the Inspector.
* Called from InspectorUI.
*
* @param {Element} aNode
* the newly selected node
*/
update: function T_update(aNode) {
let id = this.currentWindowId;
if (this.visualizers[id]) {
this.visualizers[id].presenter.highlightNode(aNode);
}
},
/**
* Add the browser event listeners to handle state changes.
* Called from InspectorUI.
*/
setup: function T_setup()
{
if (this._setupFinished) {
return;
}
// load the preferences from the devtools.tilt branch
TiltVisualizer.Prefs.load();
// hide the button in the Inspector toolbar if Tilt is not enabled
this.tiltButton.hidden = !this.enabled;
// add the necessary observers to handle specific notifications
Services.obs.addObserver(
this._whenInitialized.bind(this), TILT_NOTIFICATIONS.INITIALIZED, false);
Services.obs.addObserver(
this._whenDestroyed.bind(this), TILT_NOTIFICATIONS.DESTROYED, false);
Services.obs.addObserver(
this._whenShown.bind(this), TILT_NOTIFICATIONS.SHOWN, false);
Services.obs.addObserver(
this._whenHidden.bind(this), TILT_NOTIFICATIONS.HIDDEN, false);
Services.obs.addObserver(function(aSubject, aTopic, aWinId) {
this.destroy(aWinId); }.bind(this),
this.chromeWindow.InspectorUI.INSPECTOR_NOTIFICATIONS.DESTROYED, false);
this.chromeWindow.gBrowser.tabContainer.addEventListener("TabSelect",
this._onTabSelect.bind(this), false);
// FIXME: this shouldn't be done here, see bug #705131
let onOpened = function() {
if (this.visualizers[this.currentWindowId]) {
this.chromeWindow.InspectorUI.stopInspecting();
this.inspectButton.disabled = true;
this.highlighterContainer.style.display = "none";
}
}.bind(this);
let onClosed = function() {
this.inspectButton.disabled = false;
this.highlighterContainer.style.display = "";
}.bind(this);
Services.obs.addObserver(onOpened,
this.chromeWindow.InspectorUI.INSPECTOR_NOTIFICATIONS.OPENED, false);
Services.obs.addObserver(onClosed,
this.chromeWindow.InspectorUI.INSPECTOR_NOTIFICATIONS.CLOSED, false);
Services.obs.addObserver(onOpened,
TILT_NOTIFICATIONS.INITIALIZED, false);
Services.obs.addObserver(onClosed,
TILT_NOTIFICATIONS.DESTROYED, false);
this._setupFinished = true;
},
/**
* Returns true if this tool is enabled.
*/
get enabled()
{
return (TiltVisualizer.Prefs.enabled &&
(TiltVisualizer.Prefs.forceEnabled || TiltGL.isWebGLSupported()));
},
/**
* Gets the ID of the current window object to identify the visualizer.
*/
get currentWindowId()
{
let gBrowser = this.chromeWindow.gBrowser;
return TiltUtils.getWindowId(gBrowser.selectedBrowser.contentWindow);
},
/**
* Gets the Tilt button in the Inspector toolbar.
*/
get tiltButton()
{
return this.chromeWindow.document.getElementById(
"inspector-3D-button");
},
/**
* Gets the Inspect button in the Inspector toolbar.
* FIXME: this shouldn't be needed here, remove after bug #705131
*/
get inspectButton()
{
return this.chromeWindow.document.getElementById(
"inspector-inspect-toolbutton");
},
/**
* Gets the Highlighter contaniner stack.
* FIXME: this shouldn't be needed here, remove after bug #705131
*/
get highlighterContainer()
{
return this.chromeWindow.document.getElementById(
"highlighter-container");
}
};