tree-ngx
Version:
A highly customizable Angular Tree Component, usable with minimal implementation.
136 lines • 19.3 kB
JavaScript
import { Component, Input, EventEmitter, Output, ContentChild } from '@angular/core';
import { TreeService } from '../service/tree-service';
import { TreeMode } from '../model/tree-mode';
import { timer } from 'rxjs';
import { TreeUtil } from '../util/util';
import * as i0 from "@angular/core";
import * as i1 from "../service/tree-service";
import * as i2 from "../node/node.component";
import * as i3 from "@angular/common";
export class TreeNgxComponent {
constructor(treeService) {
this.treeService = treeService;
this.defaultOptions = {
mode: TreeMode.SingleSelect,
checkboxes: false,
alwaysEmitSelected: false
};
this.options = this.defaultOptions;
this.callbacks = this.treeService.callbacks;
this.filter = '';
this.selectedItems = new EventEmitter();
}
ngOnInit() {
this.subscription = this.treeService.connect().subscribe(it => {
const sub = timer(0).subscribe(() => {
this.selectedItems.emit(it);
sub.unsubscribe();
});
});
}
ngOnDestroy() {
this.subscription.unsubscribe();
}
ngOnChanges(changes) {
if (changes.filter) {
this.treeService.filterChanged(this.filter.toLowerCase());
}
if (changes.options) {
this.setOptions();
if (this.treeService.nodeItems) {
this.treeService.treeState = this.initTreeStructure(null, this.treeService.nodeItems, this.treeService.options);
this.treeService.clear();
this.treeService.setInitialState();
this.treeService.forceFilterTraverse();
}
}
if (changes.callbacks) {
this.treeService.callbacks = this.callbacks;
}
if (changes.nodeItems) {
this.initialize();
}
}
addNodeById(nodeItem, id) {
const newNodeState = TreeUtil.initState(null, nodeItem, this.options);
this.treeService.addNodeById(newNodeState, id);
}
deleteById(id) {
this.treeService.deleteById(id);
}
editNameById(id, name) {
this.treeService.editNameById(id, name);
}
editItemById(id, item) {
this.treeService.editItemById(id, item);
}
getParentById(id) {
return this.treeService.getParentById(id);
}
expandAll() {
this.treeService.toggleExpanded(true);
}
collapseAll() {
this.treeService.toggleExpanded(false);
}
expandById(id) {
this.treeService.expandById(id);
}
collapseById(id) {
this.treeService.collapseById(id);
}
selectById(id) {
this.treeService.selectById(id);
}
initialize() {
this.setOptions();
this.treeService.callbacks = this.callbacks;
this.treeService.nodeItems = this.nodeItems;
this.treeService.treeState = this.initTreeStructure(null, this.treeService.nodeItems, this.treeService.options);
this.treeService.clear();
this.treeService.setInitialState();
}
initTreeStructure(parent, nodeItems, options) {
let treeStructure = [];
for (let nodeItem of nodeItems) {
const nodeState = TreeUtil.initState(parent, nodeItem, options);
if (nodeItem.children) {
nodeState.children = this.initTreeStructure(nodeState, nodeItem.children, options);
nodeState.filteredChildren = nodeState.children;
}
treeStructure.push(nodeState);
}
return treeStructure;
}
setOptions() {
if (this.options.mode === TreeMode.NoSelect) {
this.treeService.options = { ...this.options, checkboxes: false };
}
else {
this.treeService.options = { ...this.options };
}
}
}
TreeNgxComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: TreeNgxComponent, deps: [{ token: i1.TreeService }], target: i0.ɵɵFactoryTarget.Component });
TreeNgxComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.2.2", type: TreeNgxComponent, selector: "tree-ngx", inputs: { options: "options", callbacks: "callbacks", nodeItems: "nodeItems", filter: "filter" }, outputs: { selectedItems: "selectedItems" }, providers: [TreeService], queries: [{ propertyName: "nodeNameTemplate", first: true, predicate: ["nodeNameTemplate"], descendants: true }, { propertyName: "nodeCollapsibleTemplate", first: true, predicate: ["nodeCollapsibleTemplate"], descendants: true }], usesOnChanges: true, ngImport: i0, template: "<div class=\"tree-ngx\">\r\n <node class=\"node-root\" [state]=\"state\" [selectedState]=\"state.selectedState\" [nodeCollapsibleTemplate]=\"nodeCollapsibleTemplate\"\r\n [nodeNameTemplate]=\"nodeNameTemplate\" *ngFor=\"let state of treeService.treeState\"></node>\r\n</div>\r\n", components: [{ type: i2.NodeComponent, selector: "node", inputs: ["state", "selectedState", "nodeNameTemplate", "nodeCollapsibleTemplate"] }], directives: [{ type: i3.NgForOf, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.2.2", ngImport: i0, type: TreeNgxComponent, decorators: [{
type: Component,
args: [{ selector: 'tree-ngx', providers: [TreeService], template: "<div class=\"tree-ngx\">\r\n <node class=\"node-root\" [state]=\"state\" [selectedState]=\"state.selectedState\" [nodeCollapsibleTemplate]=\"nodeCollapsibleTemplate\"\r\n [nodeNameTemplate]=\"nodeNameTemplate\" *ngFor=\"let state of treeService.treeState\"></node>\r\n</div>\r\n" }]
}], ctorParameters: function () { return [{ type: i1.TreeService }]; }, propDecorators: { nodeNameTemplate: [{
type: ContentChild,
args: ['nodeNameTemplate', { static: false }]
}], nodeCollapsibleTemplate: [{
type: ContentChild,
args: ['nodeCollapsibleTemplate', { static: false }]
}], options: [{
type: Input
}], callbacks: [{
type: Input
}], nodeItems: [{
type: Input
}], filter: [{
type: Input
}], selectedItems: [{
type: Output
}] } });
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{\r\n  Component,\r\n  OnInit,\r\n  OnDestroy,\r\n  OnChanges,\r\n  Input,\r\n  EventEmitter,\r\n  Output,\r\n  ContentChild,\r\n  TemplateRef,\r\n  SimpleChanges\r\n} from '@angular/core';\r\nimport { NodeItem } from '../model/node-item';\r\nimport { TreeService } from '../service/tree-service';\r\nimport { TreeOptions } from '../model/tree-options';\r\nimport { TreeCallbacks } from '../model/tree-callbacks';\r\nimport { TreeMode } from '../model/tree-mode';\r\nimport { Subscription, timer } from 'rxjs';\r\nimport { NodeState } from '../model/node-state';\r\nimport { TreeNgx } from '../model/tree-ngx';\r\nimport { TreeUtil } from '../util/util';\r\n\r\n@Component({\r\n  selector: 'tree-ngx',\r\n  templateUrl: './tree-ngx.component.html',\r\n  providers: [TreeService]\r\n})\r\nexport class TreeNgxComponent implements OnInit, OnDestroy, OnChanges, TreeNgx {\r\n  @ContentChild('nodeNameTemplate', { static: false }) nodeNameTemplate: TemplateRef<any>;\r\n  @ContentChild('nodeCollapsibleTemplate', { static: false }) nodeCollapsibleTemplate: TemplateRef<any>;\r\n\r\n  private subscription: Subscription;\r\n\r\n  private defaultOptions: TreeOptions = {\r\n    mode: TreeMode.SingleSelect,\r\n    checkboxes: false,\r\n    alwaysEmitSelected: false\r\n  };\r\n\r\n  @Input() options: TreeOptions = this.defaultOptions;\r\n  @Input() callbacks: TreeCallbacks = this.treeService.callbacks;\r\n  @Input() nodeItems: NodeItem<any>[];\r\n  @Input() filter = '';\r\n  @Output() selectedItems = new EventEmitter<any>();\r\n\r\n  constructor(public treeService: TreeService) {\r\n  }\r\n\r\n  ngOnInit() {\r\n    this.subscription = this.treeService.connect().subscribe(it => {\r\n      const sub = timer(0).subscribe(() => {\r\n        this.selectedItems.emit(it);\r\n        sub.unsubscribe();\r\n      });\r\n    });\r\n  }\r\n\r\n  ngOnDestroy() {\r\n    this.subscription.unsubscribe();\r\n  }\r\n\r\n  ngOnChanges(changes: SimpleChanges) {\r\n    if (changes.filter) {\r\n      this.treeService.filterChanged(this.filter.toLowerCase());\r\n    }\r\n\r\n    if (changes.options) {\r\n      this.setOptions();\r\n      if (this.treeService.nodeItems) {\r\n        this.treeService.treeState = this.initTreeStructure(null, this.treeService.nodeItems, this.treeService.options);\r\n        this.treeService.clear();\r\n        this.treeService.setInitialState();\r\n        this.treeService.forceFilterTraverse();\r\n      }\r\n    }\r\n\r\n    if (changes.callbacks) {\r\n      this.treeService.callbacks = this.callbacks;\r\n    }\r\n\r\n    if (changes.nodeItems) {\r\n      this.initialize();\r\n    }\r\n  }\r\n\r\n  public addNodeById(nodeItem: NodeItem<any>, id?: string): void {\r\n    const newNodeState = TreeUtil.initState(null, nodeItem, this.options);\r\n    this.treeService.addNodeById(newNodeState, id);\r\n  }\r\n\r\n  public deleteById(id: string): void {\r\n    this.treeService.deleteById(id);\r\n  }\r\n\r\n  public editNameById(id: string, name: string): void {\r\n    this.treeService.editNameById(id, name);\r\n  }\r\n\r\n  public editItemById(id: string, item: any): void {\r\n    this.treeService.editItemById(id, item);\r\n  }\r\n\r\n  public getParentById(id: string): NodeItem<any> {\r\n    return this.treeService.getParentById(id);\r\n  }\r\n\r\n  public expandAll(): void {\r\n    this.treeService.toggleExpanded(true);\r\n  }\r\n\r\n  public collapseAll(): void {\r\n    this.treeService.toggleExpanded(false);\r\n  }\r\n\r\n  public expandById(id: string): void {\r\n    this.treeService.expandById(id);\r\n  }\r\n\r\n  public collapseById(id: string): void {\r\n    this.treeService.collapseById(id);\r\n  }\r\n\r\n  public selectById(id: string): void {\r\n    this.treeService.selectById(id);\r\n  }\r\n\r\n  public initialize() {\r\n    this.setOptions();\r\n    this.treeService.callbacks = this.callbacks;\r\n    this.treeService.nodeItems = this.nodeItems;\r\n\r\n    this.treeService.treeState = this.initTreeStructure(null, this.treeService.nodeItems, this.treeService.options);\r\n    this.treeService.clear();\r\n    this.treeService.setInitialState();\r\n  }\r\n\r\n  private initTreeStructure(parent: NodeState, nodeItems: NodeItem<any>[], options: TreeOptions) {\r\n    let treeStructure: NodeState[] = [];\r\n\r\n    for (let nodeItem of nodeItems) {\r\n\r\n      const nodeState = TreeUtil.initState(parent, nodeItem, options);\r\n\r\n      if (nodeItem.children) {\r\n        nodeState.children = this.initTreeStructure(nodeState, nodeItem.children, options);\r\n        nodeState.filteredChildren = nodeState.children;\r\n      }\r\n\r\n      treeStructure.push(nodeState);\r\n    }\r\n\r\n    return treeStructure;\r\n  }\r\n\r\n  private setOptions() {\r\n    if (this.options.mode === TreeMode.NoSelect) {\r\n      this.treeService.options = { ...this.options, checkboxes: false };\r\n    } else {\r\n      this.treeService.options = { ...this.options };\r\n    }\r\n  }\r\n}\r\n","<div class=\"tree-ngx\">\r\n  <node class=\"node-root\" [state]=\"state\" [selectedState]=\"state.selectedState\" [nodeCollapsibleTemplate]=\"nodeCollapsibleTemplate\"\r\n    [nodeNameTemplate]=\"nodeNameTemplate\" *ngFor=\"let state of treeService.treeState\"></node>\r\n</div>\r\n"]}