| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google LLC All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | import { __awaiter } from "tslib";
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| 9 | import { ComponentHarness, HarnessPredicate, parallel } from '@angular/cdk/testing';
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| 10 | import { MatTreeNodeHarness } from './node-harness';
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| 11 | /** Harness for interacting with a standard mat-tree in tests. */
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| 12 | export class MatTreeHarness extends ComponentHarness {
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| 13 | /**
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| 14 | * Gets a `HarnessPredicate` that can be used to search for a tree with specific attributes.
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| 15 | * @param options Options for narrowing the search
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| 16 | * @return a `HarnessPredicate` configured with the given options.
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| 17 | */
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| 18 | static with(options = {}) {
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| 19 | return new HarnessPredicate(MatTreeHarness, options);
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| 20 | }
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| 21 | /** Gets all of the nodes in the tree. */
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| 22 | getNodes(filter = {}) {
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| 23 | return __awaiter(this, void 0, void 0, function* () {
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| 24 | return this.locatorForAll(MatTreeNodeHarness.with(filter))();
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| 25 | });
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| 26 | }
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| 27 | /**
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| 28 | * Gets an object representation for the visible tree structure
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| 29 | * If a node is under an unexpanded node it will not be included.
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| 30 | * Eg.
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| 31 | * Tree (all nodes expanded):
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| 32 | * `
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| 33 | * <mat-tree>
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| 34 | * <mat-tree-node>Node 1<mat-tree-node>
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| 35 | * <mat-nested-tree-node>
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| 36 | * Node 2
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| 37 | * <mat-nested-tree-node>
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| 38 | * Node 2.1
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| 39 | * <mat-tree-node>
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| 40 | * Node 2.1.1
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| 41 | * <mat-tree-node>
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| 42 | * <mat-nested-tree-node>
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| 43 | * <mat-tree-node>
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| 44 | * Node 2.2
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| 45 | * <mat-tree-node>
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| 46 | * <mat-nested-tree-node>
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| 47 | * </mat-tree>`
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| 48 | *
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| 49 | * Tree structure:
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| 50 | * {
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| 51 | * children: [
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| 52 | * {
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| 53 | * text: 'Node 1',
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| 54 | * children: [
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| 55 | * {
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| 56 | * text: 'Node 2',
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| 57 | * children: [
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| 58 | * {
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| 59 | * text: 'Node 2.1',
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| 60 | * children: [{text: 'Node 2.1.1'}]
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| 61 | * },
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| 62 | * {text: 'Node 2.2'}
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| 63 | * ]
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| 64 | * }
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| 65 | * ]
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| 66 | * }
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| 67 | * ]
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| 68 | * };
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| 69 | */
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| 70 | getTreeStructure() {
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| 71 | return __awaiter(this, void 0, void 0, function* () {
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| 72 | const nodes = yield this.getNodes();
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| 73 | const nodeInformation = yield parallel(() => nodes.map(node => {
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| 74 | return parallel(() => [node.getLevel(), node.getText(), node.isExpanded()]);
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| 75 | }));
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| 76 | return this._getTreeStructure(nodeInformation, 1, true);
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| 77 | });
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| 78 | }
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| 79 | /**
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| 80 | * Recursively collect the structured text of the tree nodes.
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| 81 | * @param nodes A list of tree nodes
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| 82 | * @param level The level of nodes that are being accounted for during this iteration
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| 83 | * @param parentExpanded Whether the parent of the first node in param nodes is expanded
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| 84 | */
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| 85 | _getTreeStructure(nodes, level, parentExpanded) {
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| 86 | var _a, _b, _c;
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| 87 | const result = {};
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| 88 | for (let i = 0; i < nodes.length; i++) {
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| 89 | const [nodeLevel, text, expanded] = nodes[i];
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| 90 | const nextNodeLevel = (_b = (_a = nodes[i + 1]) === null || _a === void 0 ? void 0 : _a[0]) !== null && _b !== void 0 ? _b : -1;
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| 91 | // Return the accumulated value for the current level once we reach a shallower level node
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| 92 | if (nodeLevel < level) {
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| 93 | return result;
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| 94 | }
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| 95 | // Skip deeper level nodes during this iteration, they will be picked up in a later iteration
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| 96 | if (nodeLevel > level) {
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| 97 | continue;
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| 98 | }
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| 99 | // Only add to representation if it is visible (parent is expanded)
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| 100 | if (parentExpanded) {
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| 101 | // Collect the data under this node according to the following rules:
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| 102 | // 1. If the next node in the list is a sibling of the current node add it to the child list
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| 103 | // 2. If the next node is a child of the current node, get the sub-tree structure for the
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| 104 | // child and add it under this node
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| 105 | // 3. If the next node has a shallower level, we've reached the end of the child nodes for
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| 106 | // the current parent.
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| 107 | if (nextNodeLevel === level) {
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| 108 | this._addChildToNode(result, { text });
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| 109 | }
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| 110 | else if (nextNodeLevel > level) {
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| 111 | let children = (_c = this._getTreeStructure(nodes.slice(i + 1), nextNodeLevel, expanded)) === null || _c === void 0 ? void 0 : _c.children;
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| 112 | let child = children ? { text, children } : { text };
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| 113 | this._addChildToNode(result, child);
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| 114 | }
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| 115 | else {
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| 116 | this._addChildToNode(result, { text });
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| 117 | return result;
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| 118 | }
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| 119 | }
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| 120 | }
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| 121 | return result;
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| 122 | }
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| 123 | _addChildToNode(result, child) {
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| 124 | result.children ? result.children.push(child) : result.children = [child];
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| 125 | }
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| 126 | }
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| 127 | /** The selector for the host element of a `MatTableHarness` instance. */
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| 128 | MatTreeHarness.hostSelector = '.mat-tree';
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| 129 | //# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {ComponentHarness, HarnessPredicate, parallel} from '@angular/cdk/testing';\nimport {MatTreeNodeHarness} from './node-harness';\nimport {TreeHarnessFilters, TreeNodeHarnessFilters} from './tree-harness-filters';\n\nexport type TextTree = {\n  text?: string;\n  children?: TextTree[];\n};\n\n/** Harness for interacting with a standard mat-tree in tests. */\nexport class MatTreeHarness extends ComponentHarness {\n  /** The selector for the host element of a `MatTableHarness` instance. */\n  static hostSelector = '.mat-tree';\n\n  /**\n   * Gets a `HarnessPredicate` that can be used to search for a tree with specific attributes.\n   * @param options Options for narrowing the search\n   * @return a `HarnessPredicate` configured with the given options.\n   */\n  static with(options: TreeHarnessFilters = {}): HarnessPredicate<MatTreeHarness> {\n    return new HarnessPredicate(MatTreeHarness, options);\n  }\n\n  /** Gets all of the nodes in the tree. */\n  async getNodes(filter: TreeNodeHarnessFilters = {}): Promise<MatTreeNodeHarness[]> {\n    return this.locatorForAll(MatTreeNodeHarness.with(filter))();\n  }\n\n  /**\n   * Gets an object representation for the visible tree structure\n   * If a node is under an unexpanded node it will not be included.\n   * Eg.\n   * Tree (all nodes expanded):\n   * `\n   * <mat-tree>\n   *   <mat-tree-node>Node 1<mat-tree-node>\n   *   <mat-nested-tree-node>\n   *     Node 2\n   *     <mat-nested-tree-node>\n   *       Node 2.1\n   *       <mat-tree-node>\n   *         Node 2.1.1\n   *       <mat-tree-node>\n   *     <mat-nested-tree-node>\n   *     <mat-tree-node>\n   *       Node 2.2\n   *     <mat-tree-node>\n   *   <mat-nested-tree-node>\n   * </mat-tree>`\n   *\n   * Tree structure:\n   * {\n   *  children: [\n   *    {\n   *      text: 'Node 1',\n   *      children: [\n   *        {\n   *          text: 'Node 2',\n   *          children: [\n   *            {\n   *              text: 'Node 2.1',\n   *              children: [{text: 'Node 2.1.1'}]\n   *            },\n   *            {text: 'Node 2.2'}\n   *          ]\n   *        }\n   *      ]\n   *    }\n   *  ]\n   * };\n   */\n  async getTreeStructure(): Promise<TextTree> {\n    const nodes = await this.getNodes();\n    const nodeInformation = await parallel(() => nodes.map(node => {\n      return parallel(() => [node.getLevel(), node.getText(), node.isExpanded()]);\n    }));\n    return this._getTreeStructure(nodeInformation, 1, true);\n  }\n\n  /**\n   * Recursively collect the structured text of the tree nodes.\n   * @param nodes A list of tree nodes\n   * @param level The level of nodes that are being accounted for during this iteration\n   * @param parentExpanded Whether the parent of the first node in param nodes is expanded\n   */\n  private _getTreeStructure(nodes: [number, string, boolean][], level: number,\n                                     parentExpanded: boolean): TextTree {\n    const result: TextTree = {};\n    for (let i = 0; i < nodes.length; i++) {\n      const [nodeLevel, text, expanded] = nodes[i];\n      const nextNodeLevel = nodes[i + 1]?.[0] ?? -1;\n\n      // Return the accumulated value for the current level once we reach a shallower level node\n      if (nodeLevel < level) {\n        return result;\n      }\n      // Skip deeper level nodes during this iteration, they will be picked up in a later iteration\n      if (nodeLevel > level) {\n        continue;\n      }\n      // Only add to representation if it is visible (parent is expanded)\n      if (parentExpanded) {\n        // Collect the data under this node according to the following rules:\n        // 1. If the next node in the list is a sibling of the current node add it to the child list\n        // 2. If the next node is a child of the current node, get the sub-tree structure for the\n        //    child and add it under this node\n        // 3. If the next node has a shallower level, we've reached the end of the child nodes for\n        //    the current parent.\n        if (nextNodeLevel === level) {\n          this._addChildToNode(result, {text});\n        } else if (nextNodeLevel > level) {\n          let children = this._getTreeStructure(nodes.slice(i + 1),\n            nextNodeLevel,\n            expanded)?.children;\n          let child = children ? {text, children} : {text};\n          this._addChildToNode(result, child);\n        } else {\n          this._addChildToNode(result, {text});\n          return result;\n        }\n      }\n    }\n    return result;\n  }\n\n  private _addChildToNode(result: TextTree, child: TextTree) {\n    result.children ? result.children.push(child) : result.children = [child];\n  }\n}\n"]} |
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