devtools/client/fronts/highlighters.js

   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 {
   8   FrontClassWithSpec,
   9   registerFront,
  10 } = require("resource://devtools/shared/protocol.js");
  11 const {
  12   customHighlighterSpec,
  13 } = require("resource://devtools/shared/specs/highlighters.js");
  14 const {
  15   safeAsyncMethod,
  16 } = require("resource://devtools/shared/async-utils.js");
  17
  18 class CustomHighlighterFront extends FrontClassWithSpec(customHighlighterSpec) {
  19   constructor(client, targetFront, parentFront) {
  20     super(client, targetFront, parentFront);
  21
  22     // show/hide requests can be triggered while DevTools are closing.
  23     this.show = safeAsyncMethod(this.show.bind(this), () => this.isDestroyed());
  24     this.hide = safeAsyncMethod(this.hide.bind(this), () => this.isDestroyed());
  25
  26     this._isShown = false;
  27   }
  28
  29   show(...args) {
  30     this._isShown = true;
  31     return super.show(...args);
  32   }
  33
  34   hide() {
  35     this._isShown = false;
  36     return super.hide();
  37   }
  38
  39   isShown() {
  40     return this._isShown;
  41   }
  42
  43   destroy() {
  44     if (this.isDestroyed()) {
  45       return;
  46     }
  47     super.finalize(); // oneway call, doesn't expect a response.
  48     super.destroy();
  49   }
  50 }
  51
  52 exports.CustomHighlighterFront = CustomHighlighterFront;
  53 registerFront(CustomHighlighterFront);