| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import {Component, EventEmitter, Input, OnInit, Output} from '@angular/core'; |
| import {FlatTreeControl} from '@angular/cdk/tree'; |
| import {MatTreeFlatDataSource, MatTreeFlattener} from '@angular/material/tree'; |
| |
| interface BucketNode { |
| name: string; |
| endpoint?: string; |
| children?: BucketNode[]; |
| } |
| |
| interface BucketFlatNode { |
| expandable: boolean; |
| name: string; |
| level: number; |
| } |
| |
| @Component({ |
| selector: 'datalab-bucket-tree', |
| templateUrl: './bucket-tree.component.html', |
| styleUrls: ['./bucket-tree.component.scss'] |
| }) |
| |
| export class BucketTreeComponent implements OnInit { |
| @Output() emitActiveBucket: EventEmitter<{}> = new EventEmitter(); |
| @Input() openedBucket: string; |
| @Input() buckets: BucketNode[]; |
| |
| private _transformer = (node: BucketNode, level: number) => { |
| return { |
| expandable: !!node.children && node.children.length > 0, |
| name: node.name, |
| endpoint: node.endpoint, |
| level: level, |
| }; |
| } |
| |
| treeControl = new FlatTreeControl<BucketFlatNode>( |
| node => node.level, node => node.expandable); |
| |
| treeFlattener = new MatTreeFlattener( |
| this._transformer, node => node.level, node => node.expandable, node => node.children); |
| |
| dataSource = new MatTreeFlatDataSource(this.treeControl, this.treeFlattener); |
| private activeBucketName: string; |
| public activeBacket: any; |
| |
| constructor() {} |
| |
| ngOnInit() { |
| this.activeBucketName = this.openedBucket || ''; |
| this.dataSource.data = this.buckets; |
| this.setActiveBucket(); |
| } |
| |
| public openBucketData(bucket): void { |
| this.dataSource['_treeControl'].collapseAll(); |
| this.setActiveBucket(bucket); |
| this.emitActiveBucket.emit(bucket); |
| } |
| |
| public setActiveBucket(bucket?): void { |
| this.activeBacket = bucket || this.dataSource._flattenedData.getValue().filter(v => v.name === this.openedBucket)[0]; |
| this.expandAllParents(this.activeBacket); |
| } |
| |
| public toggleProject(el, isExpanded): void { |
| isExpanded ? this.treeControl.collapse(el) : this.treeControl.expand(el); |
| } |
| |
| private expandAllParents(el): void { |
| if (el) { |
| this.treeControl.expand(el); |
| if (this.getParentNode(el) !== null) { |
| this.expandAllParents(this.getParentNode(el)); |
| } |
| } |
| } |
| |
| private getParentNode(node: BucketFlatNode): BucketFlatNode | null { |
| const currentLevel = node.level; |
| if (currentLevel < 1) { |
| return null; |
| } |
| |
| const startIndex = this.treeControl.dataNodes.indexOf(node) - 1; |
| |
| for (let i = startIndex; i >= 0; i--) { |
| const currentNode = this.treeControl.dataNodes[i]; |
| |
| if (currentNode.level < currentLevel) { |
| return currentNode; |
| } |
| } |
| return null; |
| } |
| |
| public hasChild = (_: number, node: BucketFlatNode) => node.expandable; |
| } |