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@angular/material

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/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ import { __awaiter } from "tslib"; import { ComponentHarness, HarnessPredicate, parallel } from '@angular/cdk/testing'; import { MatTreeNodeHarness } from './node-harness'; /** Harness for interacting with a standard mat-tree in tests. */ export class MatTreeHarness extends ComponentHarness { /** * Gets a `HarnessPredicate` that can be used to search for a tree with specific attributes. * @param options Options for narrowing the search * @return a `HarnessPredicate` configured with the given options. */ static with(options = {}) { return new HarnessPredicate(MatTreeHarness, options); } /** Gets all of the nodes in the tree. */ getNodes(filter = {}) { return __awaiter(this, void 0, void 0, function* () { return this.locatorForAll(MatTreeNodeHarness.with(filter))(); }); } /** * Gets an object representation for the visible tree structure * If a node is under an unexpanded node it will not be included. * Eg. * Tree (all nodes expanded): * ` * <mat-tree> * <mat-tree-node>Node 1<mat-tree-node> * <mat-nested-tree-node> * Node 2 * <mat-nested-tree-node> * Node 2.1 * <mat-tree-node> * Node 2.1.1 * <mat-tree-node> * <mat-nested-tree-node> * <mat-tree-node> * Node 2.2 * <mat-tree-node> * <mat-nested-tree-node> * </mat-tree>` * * Tree structure: * { * children: [ * { * text: 'Node 1', * children: [ * { * text: 'Node 2', * children: [ * { * text: 'Node 2.1', * children: [{text: 'Node 2.1.1'}] * }, * {text: 'Node 2.2'} * ] * } * ] * } * ] * }; */ getTreeStructure() { return __awaiter(this, void 0, void 0, function* () { const nodes = yield this.getNodes(); const nodeInformation = yield parallel(() => nodes.map(node => { return Promise.all([node.getLevel(), node.getText(), node.isExpanded()]); })); return this._getTreeStructure(nodeInformation, 1, true); }); } /** * Recursively collect the structured text of the tree nodes. * @param nodes A list of tree nodes * @param level The level of nodes that are being accounted for during this iteration * @param parentExpanded Whether the parent of the first node in param nodes is expanded */ _getTreeStructure(nodes, level, parentExpanded) { var _a, _b, _c; const result = {}; for (let i = 0; i < nodes.length; i++) { const [nodeLevel, text, expanded] = nodes[i]; const nextNodeLevel = (_b = (_a = nodes[i + 1]) === null || _a === void 0 ? void 0 : _a[0]) !== null && _b !== void 0 ? _b : -1; // Return the accumulated value for the current level once we reach a shallower level node if (nodeLevel < level) { return result; } // Skip deeper level nodes during this iteration, they will be picked up in a later iteration if (nodeLevel > level) { continue; } // Only add to representation if it is visible (parent is expanded) if (parentExpanded) { // Collect the data under this node according to the following rules: // 1. If the next node in the list is a sibling of the current node add it to the child list // 2. If the next node is a child of the current node, get the sub-tree structure for the // child and add it under this node // 3. If the next node has a shallower level, we've reached the end of the child nodes for // the current parent. if (nextNodeLevel === level) { this._addChildToNode(result, { text }); } else if (nextNodeLevel > level) { let children = (_c = this._getTreeStructure(nodes.slice(i + 1), nextNodeLevel, expanded)) === null || _c === void 0 ? void 0 : _c.children; let child = children ? { text, children } : { text }; this._addChildToNode(result, child); } else { this._addChildToNode(result, { text }); return result; } } } return result; } _addChildToNode(result, child) { result.children ? result.children.push(child) : result.children = [child]; } } /** The selector for the host element of a `MatTableHarness` instance. */ MatTreeHarness.hostSelector = '.mat-tree'; //# 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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 Promise.all([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"]}