The Tor Browser: browser/devtools/canvasdebugger/panel.js@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ft=javascript ts=2 et sw=2 tw=80: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 "use strict";

     8 const { Cc, Ci, Cu, Cr } = require("chrome");

     9 const promise = Cu.import("resource://gre/modules/Promise.jsm", {}).Promise;

    10 const EventEmitter = require("devtools/toolkit/event-emitter");

    11 const { CanvasFront } = require("devtools/server/actors/canvas");

    12 const { DevToolsUtils } = Cu.import("resource://gre/modules/devtools/DevToolsUtils.jsm", {});

    14 function CanvasDebuggerPanel(iframeWindow, toolbox) {

    15   this.panelWin = iframeWindow;

    16   this._toolbox = toolbox;

    17   this._destroyer = null;

    19   EventEmitter.decorate(this);

    20 };

    22 exports.CanvasDebuggerPanel = CanvasDebuggerPanel;

    24 CanvasDebuggerPanel.prototype = {

    25   /**

    26    * Open is effectively an asynchronous constructor.

    27    *

    28    * @return object

    29    *         A promise that is resolved when the Canvas Debugger completes opening.

    30    */

    31   open: function() {

    32     let targetPromise;

    34     // Local debugging needs to make the target remote.

    35     if (!this.target.isRemote) {

    36       targetPromise = this.target.makeRemote();

    37     } else {

    38       targetPromise = promise.resolve(this.target);

    39     }

    41     return targetPromise

    42       .then(() => {

    43         this.panelWin.gToolbox = this._toolbox;

    44         this.panelWin.gTarget = this.target;

    45         this.panelWin.gFront = new CanvasFront(this.target.client, this.target.form);

    46         return this.panelWin.startupCanvasDebugger();

    47       })

    48       .then(() => {

    49         this.isReady = true;

    50         this.emit("ready");

    51         return this;

    52       })

    53       .then(null, function onError(aReason) {

    54         DevToolsUtils.reportException("CanvasDebuggerPanel.prototype.open", aReason);

    55       });

    56   },

    58   // DevToolPanel API

    60   get target() this._toolbox.target,

    62   destroy: function() {

    63     // Make sure this panel is not already destroyed.

    64     if (this._destroyer) {

    65       return this._destroyer;

    66     }

    68     return this._destroyer = this.panelWin.shutdownCanvasDebugger().then(() => {

    69       this.emit("destroyed");

    70     });

    71   }

    72 };

The Tor Browser / file revision