tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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panel.js (2113B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 "use strict";
      6 
      7 const EventEmitter = require("resource://devtools/shared/event-emitter.js");
      8 const HeapAnalysesClient = require("resource://devtools/shared/heapsnapshot/HeapAnalysesClient.js");
      9 
     10 class MemoryPanel extends EventEmitter {
     11  constructor(iframeWindow, toolbox, commands) {
     12    super();
     13 
     14    this.panelWin = iframeWindow;
     15    this._toolbox = toolbox;
     16    this._commands = commands;
     17 
     18    const { BrowserLoader } = ChromeUtils.importESModule(
     19      "resource://devtools/shared/loader/browser-loader.sys.mjs"
     20    );
     21    const browserRequire = BrowserLoader({
     22      baseURI: "resource://devtools/client/memory/",
     23      window: this.panelWin,
     24    }).require;
     25    this.initializer = browserRequire("devtools/client/memory/initializer");
     26 
     27    this._onTargetAvailable = this._onTargetAvailable.bind(this);
     28  }
     29  async open() {
     30    this.panelWin.gToolbox = this._toolbox;
     31    this.panelWin.gHeapAnalysesClient = new HeapAnalysesClient();
     32 
     33    await this.initializer.initialize(this._commands);
     34 
     35    await this._commands.targetCommand.watchTargets({
     36      types: [this._commands.targetCommand.TYPES.FRAME],
     37      onAvailable: this._onTargetAvailable,
     38    });
     39 
     40    return this;
     41  }
     42 
     43  async _onTargetAvailable({ targetFront }) {
     44    if (targetFront.isTopLevel) {
     45      const front = await targetFront.getFront("memory");
     46      await front.attach();
     47      this.initializer.updateFront(front);
     48    }
     49  }
     50 
     51  // DevToolPanel API
     52 
     53  destroy() {
     54    // Make sure this panel is not already destroyed.
     55    if (this._destroyed) {
     56      return;
     57    }
     58    this._destroyed = true;
     59 
     60    this._commands.targetCommand.unwatchTargets({
     61      types: [this._commands.targetCommand.TYPES.FRAME],
     62      onAvailable: this._onTargetAvailable,
     63    });
     64 
     65    this.initializer.destroy();
     66 
     67    this.panelWin.gHeapAnalysesClient.destroy();
     68    this.panelWin = null;
     69    this.emit("destroyed");
     70  }
     71 }
     72 
     73 exports.MemoryPanel = MemoryPanel;