devtools/client/fronts/private-properties-iterator.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   privatePropertiesIteratorSpec,
  13 } = require("resource://devtools/shared/specs/private-properties-iterator.js");
  14 const {
  15   getAdHocFrontOrPrimitiveGrip,
  16 } = require("resource://devtools/client/fronts/object.js");
  17
  18 class PrivatePropertiesIteratorFront extends FrontClassWithSpec(
  19   privatePropertiesIteratorSpec
  20 ) {
  21   form(data) {
  22     this.actorID = data.actor;
  23     this.count = data.count;
  24   }
  25
  26   async slice(start, count) {
  27     const result = await super.slice({ start, count });
  28     return this._onResult(result);
  29   }
  30
  31   async all() {
  32     const result = await super.all();
  33     return this._onResult(result);
  34   }
  35
  36   _onResult(result) {
  37     if (!result.privateProperties) {
  38       return result;
  39     }
  40
  41     // The result packet can have multiple properties that hold grips which we may need
  42     // to turn into fronts.
  43     const gripKeys = ["value", "getterValue", "get", "set"];
  44
  45     result.privateProperties.forEach((item, i) => {
  46       if (item?.descriptor) {
  47         for (const gripKey of gripKeys) {
  48           if (item.descriptor.hasOwnProperty(gripKey)) {
  49             result.privateProperties[i].descriptor[gripKey] =
  50               getAdHocFrontOrPrimitiveGrip(item.descriptor[gripKey], this);
  51           }
  52         }
  53       }
  54     });
  55     return result;
  56   }
  57 }
  58
  59 exports.PrivatePropertiesIteratorFront = PrivatePropertiesIteratorFront;
  60 registerFront(PrivatePropertiesIteratorFront);