导航树

TreeView控件最简单和最常见的用途是导航。 TreeView 的层次结构和自动搜索功能使用户可以轻松地向下钻取并找到他们感兴趣的项目。

您可以使用 selectedItemChangeditemClicked 事件进行导航。 不同之处在于,当用户使用键盘移动选择时会发生 selectedItemChanged,并且当用户单击某个项目或按Enter键时会发生 itemClicked

此示例使用 itemClicked 事件:

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjCore from '@grapecity/wijmo'; import * as wjNav from '@grapecity/wijmo.nav'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // create the tree var tree = new wjNav.TreeView('#theTree', { itemsSource: getData(), displayMemberPath: 'header', childItemsPath: 'items', itemClicked: function (s, e) { var msg = document.getElementById('msg'); msg.innerHTML = wjCore.format('Navigating to <b>** {header} **</b>', s.selectedItem); } }); } <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo TreeView Navigation Trees</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div id="msg" class="msg">Ready</div> <div id="theTree"></div> </div> </body> </html> export function getData() { return [ { header: 'Electronics', img: 'resources/electronics.png', items: [ { header: 'Trimmers/Shavers' }, { header: 'Tablets' }, { header: 'Phones', img: 'resources/phones.png', items: [ { header: 'Apple' }, { header: 'Motorola', newItem: true }, { header: 'Nokia' }, { header: 'Samsung' } ] }, { header: 'Speakers', newItem: true }, { header: 'Monitors' } ] }, { header: 'Toys', img: 'resources/toys.png', items: [ { header: 'Shopkins' }, { header: 'Train Sets' }, { header: 'Science Kit', newItem: true }, { header: 'Play-Doh' }, { header: 'Crayola' } ] }, { header: 'Home', img: 'resources/home.png', items: [ { header: 'Coffeee Maker' }, { header: 'Breadmaker', newItem: true }, { header: 'Solar Panel', newItem: true }, { header: 'Work Table' }, { header: 'Propane Grill' } ] } ]; } .msg { text-align: right; color: orange; } /* default trees on this sample */ .wj-treeview { display:block; height: 350px; font-size: 120%; margin-bottom: 8px; padding: 6px; background: #f0f0f0; box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23); } body { margin-bottom: 24pt; } import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjCore from '@grapecity/wijmo'; // import { Component, Inject, enableProdMode, NgModule } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { WjNavModule, WjTreeView } from '@grapecity/wijmo.angular2.nav'; import { DataService, TreeItem } from './app.data'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: TreeItem[]; msg: string = 'Ready'; // constructor(@Inject(DataService) private dataService: DataService) { this.data = dataService.getData(); } // onItemClicked(s: WjTreeView) { this.msg = wjCore.format('Navigating to <b>** {header} **</b>', s.selectedItem); } } // @NgModule({ imports: [WjNavModule, BrowserModule], declarations: [AppComponent], providers: [DataService], bootstrap: [AppComponent] }) export class AppModule { } // enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule); <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo TreeView Hosting GCControls</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.min.js"></script> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.js"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html> <div class="container-fluid"> <div id="msg" class="msg" [innerHtml]="msg">Ready</div> <wj-tree-view #theTree [itemsSource]='data' [displayMemberPath]="'header'" [childItemsPath]="'items'" (itemClicked)="onItemClicked(theTree)"></wj-tree-view> </div> import { Injectable } from '@angular/core'; export class TreeItem { header: string; newItem?: boolean; img?: string; items?: TreeItem[] } @Injectable() export class DataService { getData(): TreeItem[] { return [ { header: 'Electronics', img: 'resources/electronics.png', items: [ { header: 'Trimmers/Shavers' }, { header: 'Tablets' }, { header: 'Phones', img: 'resources/phones.png', items: [ { header: 'Apple' }, { header: 'Motorola', newItem: true }, { header: 'Nokia' }, { header: 'Samsung' }] }, { header: 'Speakers', newItem: true }, { header: 'Monitors' }] }, { header: 'Toys', img: 'resources/toys.png', items: [ { header: 'Shopkins' }, { header: 'Train Sets' }, { header: 'Science Kit', newItem: true }, { header: 'Play-Doh' }, { header: 'Crayola' }] }, { header: 'Home', img: 'resources/home.png', items: [ { header: 'Coffeee Maker' }, { header: 'Breadmaker', newItem: true }, { header: 'Solar Panel', newItem: true }, { header: 'Work Table' }, { header: 'Propane Grill' }] } ]; } } .msg { text-align: right; color: orange; } /* default trees on this sample */ .wj-treeview { display:block; height: 350px; font-size: 120%; margin-bottom: 8px; padding: 6px; background: #f0f0f0; box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23); } body { margin-bottom: 24pt; } <template> <div class="container-fluid"> <div id="msg" class="msg" v-html="msg"></div> <wj-tree-view :items-source="data" display-member-path="header" child-items-path="items" :item-clicked="onItemClicked"></wj-tree-view> </div> </template> <script> import 'bootstrap.css'; import "@grapecity/wijmo.styles/wijmo.css"; import Vue from 'vue'; import '@grapecity/wijmo.vue2.nav'; import * as wjCore from '@grapecity/wijmo'; import { getData } from './data'; new Vue({ el: '#app', data: function () { return { data: getData() , msg: "Ready" } }, methods:{ onItemClicked: function(s, e){ this.msg = wjCore.format('Navigating to <b>** {header} **</b>', s.selectedItem); } } }) </script> <style> .msg { text-align: right; color: orange; } .container-fluid .wj-treeview { display:block; height: 350px; font-size: 120%; margin-bottom: 8px; padding: 6px; background: #f0f0f0; box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23); } body { margin-bottom: 24pt; } </style> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo TreeView Navigation Trees</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.vue'); </script> </head> <body> <div id="app"> </div> </body> </html> export function getData(){ return [ { header: 'Electronics', img: 'resources/electronics.png', items: [ { header: 'Trimmers/Shavers' }, { header: 'Tablets' }, { header: 'Phones', img: 'resources/phones.png', items: [ { header: 'Apple' }, { header: 'Motorola', newItem: true }, { header: 'Nokia' }, { header: 'Samsung' }] }, { header: 'Speakers', newItem: true }, { header: 'Monitors' }] }, { header: 'Toys', img: 'resources/toys.png', items: [ { header: 'Shopkins' }, { header: 'Train Sets' }, { header: 'Science Kit', newItem: true }, { header: 'Play-Doh' }, { header: 'Crayola' }] }, { header: 'Home', img: 'resources/home.png', items: [ { header: 'Coffeee Maker' }, { header: 'Breadmaker', newItem: true }, { header: 'Solar Panel', newItem: true }, { header: 'Work Table' }, { header: 'Propane Grill' }] } ]; } import './app.css'; import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; // import * as React from 'react'; import * as ReactDOM from 'react-dom'; // import * as wjNav from '@grapecity/wijmo.react.nav'; import { getData } from './data'; class App extends React.Component { constructor(props) { super(props); this.state = { data: getData(), msg: "Ready" }; } onItemClicked(s, e) { this.setState({ msg: (<p>Navigating to <b>** {s.selectedItem.header} **</b> </p>) }); } render() { return (<div className="container-fluid"> <div id="msg" className="msg">{this.state.msg}</div> <wjNav.TreeView itemsSource={this.state.data} displayMemberPath="header" childItemsPath="items" itemClicked={this.onItemClicked.bind(this)}></wjNav.TreeView> </div>); } } ReactDOM.render(<App />, document.getElementById('app')); <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>AutoComplete</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html> .msg { text-align: right; color: orange; } .container-fluid .wj-treeview { display: block; height: 350px; font-size: 120%; margin-bottom: 8px; padding: 6px; background: #f0f0f0; box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23); } body { margin-bottom: 24pt; } export function getData() { return [ { header: 'Electronics', img: 'resources/electronics.png', items: [ { header: 'Trimmers/Shavers' }, { header: 'Tablets' }, { header: 'Phones', img: 'resources/phones.png', items: [ { header: 'Apple' }, { header: 'Motorola', newItem: true }, { header: 'Nokia' }, { header: 'Samsung' } ] }, { header: 'Speakers', newItem: true }, { header: 'Monitors' } ] }, { header: 'Toys', img: 'resources/toys.png', items: [ { header: 'Shopkins' }, { header: 'Train Sets' }, { header: 'Science Kit', newItem: true }, { header: 'Play-Doh' }, { header: 'Crayola' } ] }, { header: 'Home', img: 'resources/home.png', items: [ { header: 'Coffeee Maker' }, { header: 'Breadmaker', newItem: true }, { header: 'Solar Panel', newItem: true }, { header: 'Work Table' }, { header: 'Propane Grill' } ] } ]; }