tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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dominator-tree-lazy-children.js (1715B)

      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 file,
      3 * You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 "use strict";
      6 
      7 /**
      8 * The `DominatorTreeLazyChildren` is a placeholder that represents a future
      9 * subtree in an existing `DominatorTreeNode` tree that is currently being
     10 * incrementally fetched from the `HeapAnalysesWorker`.
     11 *
     12 * @param {NodeId} parentNodeId
     13 * @param {number} siblingIndex
     14 */
     15 function DominatorTreeLazyChildren(parentNodeId, siblingIndex) {
     16  this._parentNodeId = parentNodeId;
     17  this._siblingIndex = siblingIndex;
     18 }
     19 
     20 /**
     21 * Generate a unique key for this `DominatorTreeLazyChildren` instance. This can
     22 * be used as the key in a hash table or as the `key` property for a React
     23 * component, for example.
     24 *
     25 * @returns {string}
     26 */
     27 DominatorTreeLazyChildren.prototype.key = function () {
     28  return `dominator-tree-lazy-children-${this._parentNodeId}-${this._siblingIndex}`;
     29 };
     30 
     31 /**
     32 * Return true if this is a placeholder for the first child of its
     33 * parent. Return false if it is a placeholder for loading more of its parent's
     34 * children.
     35 *
     36 * @returns {boolean}
     37 */
     38 DominatorTreeLazyChildren.prototype.isFirstChild = function () {
     39  return this._siblingIndex === 0;
     40 };
     41 
     42 /**
     43 * Get this subtree's parent node's identifier.
     44 *
     45 * @returns {NodeId}
     46 */
     47 DominatorTreeLazyChildren.prototype.parentNodeId = function () {
     48  return this._parentNodeId;
     49 };
     50 
     51 /**
     52 * Get this subtree's index in its parent's children array.
     53 *
     54 * @returns {number}
     55 */
     56 DominatorTreeLazyChildren.prototype.siblingIndex = function () {
     57  return this._siblingIndex;
     58 };
     59 
     60 module.exports = DominatorTreeLazyChildren;