概览

使用CollectionView.filter属性来指定一个过滤器函数,该函数定义视图中应包含哪些items.

示例,请选择其中一个选项:

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wijmo from '@grapecity/wijmo'; import * as grid from '@grapecity/wijmo.grid'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // create a CollectionView let view = new wijmo.CollectionView(getData()); // // show filtered item count view.collectionChanged.addHandler(() => { let cnt = document.getElementById('cnt'); cnt.textContent = wijmo.format('{length:n0}', view.items); }); // // initialize item count display view.onCollectionChanged(); // // show the data in a grid let flex = new grid.FlexGrid('#theGrid', { itemsSource: view, alternatingRowStep: 0, headersVisibility: 'Column' }); // // change the filter document.addEventListener('change', e => { let filterType = e.target.value; // view.filter = (item) => { switch (filterType) { case 'country': return item.country == 'US'; case 'sales': return item.sales > 9000; case 'downloads': return item.downloads > 19000; default: return true; } }; }); } <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity CollectionView Filtering Overview</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"> <label> <input type="radio" name="filter" value="" checked="true" /> No Filter </label> <label> <input type="radio" name="filter" value="country" /> US only </label> <label> <input type="radio" name="filter" value="sales" /> Sales > 9,000 </label> <label> <input type="radio" name="filter" value="downloads" /> Downloads > 19,000 </label> <p> Result (<span id="cnt"></span> items): </p> <div id="theGrid"> </div> </div> </body> </html> // export function getData() { let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], data = []; // for (let i = 0; i < 1000; i++) { data.push({ id: i, country: countries[i % countries.length], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } // return data; } .wj-flexgrid { max-height: 250px; } label { width: 100% } import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import * as wijmo 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 { WjGridModule } from '@grapecity/wijmo.angular2.grid'; import { DataService, TDataItem } from './app.data'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { view: wijmo.CollectionView; // constructor(@Inject(DataService) private dataService: DataService) { this.view = new wijmo.CollectionView(dataService.getData()); // // change the filter document.addEventListener('change', e => { let filterType = (<HTMLInputElement>e.target).value; // this.view.filter = (item: TDataItem) => { switch (filterType) { case 'country': return item.country == 'US'; case 'sales': return item.sales > 9000; case 'downloads': return item.downloads > 19000; default: return true; } } }); } } // @NgModule({ imports: [WjGridModule, 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 CollectionView Filtering Overview</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"> <label> <input type="radio" name="filter" value="" checked="true" /> No Filter </label> <label> <input type="radio" name="filter" value="country" /> US only </label> <label> <input type="radio" name="filter" value="sales" /> Sales > 9,000 </label> <label> <input type="radio" name="filter" value="downloads" /> Downloads > 19,000 </label> <p> Result ({{ view.items.length | number:0 }} items): </p> <wj-flex-grid [itemsSource]="view" [alternatingRowStep]="0" [headersVisibility]="'Column'"> </wj-flex-grid> </div> import { Injectable } from '@angular/core'; // export type TDataItem = { id: number; country: string; downloads: number; sales: number; expenses: number; } // @Injectable() export class DataService { getData() { let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], data: TDataItem[] = []; // for (let i = 0; i < 1000; i++) { data.push({ id: i, country: countries[i % countries.length], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } // return data; } } .wj-flexgrid { max-height: 250px; } label { width: 100% } <template> <div class="container-fluid"> <label> <input type="radio" name="filter" value="" checked="true" /> No Filter </label> <label> <input type="radio" name="filter" value="country" /> US only </label> <label> <input type="radio" name="filter" value="sales" /> Sales > 9,000 </label> <label> <input type="radio" name="filter" value="downloads" /> Downloads > 19,000 </label> <p> Result ({{ view.items.length }} items): </p> <wj-flex-grid :items-source="view" :show-alternating-rows=false headers-visibility="Column"> </wj-flex-grid> </div> </template> <script> import "bootstrap.css"; import "@grapecity/wijmo.styles/wijmo.css"; import Vue from 'vue'; import * as wjCore from '@grapecity/wijmo'; import { getData } from './data'; import { WjGridModule } from '@grapecity/wijmo.vue2.grid'; import { WjGridFilterModule } from '@grapecity/wijmo.vue2.grid.filter'; new Vue({ el: '#app', data:{ view: new wjCore.CollectionView(getData()) }, mounted: function(){ document.addEventListener('change', e => { let filterType = (e.target).value; // this.view.filter = (item) => { switch (filterType) { case 'country': return item.country == 'US'; case 'sales': return item.sales > 9000; case 'downloads': return item.downloads > 19000; default: return true; } } }); } }) </script> <style> .container-fluid .wj-flexgrid { max-height: 250px; } label { width: 100% } </style> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity CollectionView Filtering Overview</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(callback, delay) { let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], data = []; // for (let i = 0; i < 1000; i++) { data.push({ id: i, country: countries[i % countries.length], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } // return data; } import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './app.css'; import * as React from 'react'; import * as ReactDOM from 'react-dom'; import * as wjCore from '@grapecity/wijmo'; import * as wjGrid from '@grapecity/wijmo.react.grid'; import { getData } from './data'; class App extends React.Component { constructor(props) { super(props); this.state = { view: new wjCore.CollectionView(getData()) }; } ; componentDidMount() { document.addEventListener('change', (e) => { let filterType = e.target.value; // this.setState(Object.assign(this.state.view, { filter: (item) => { switch (filterType) { case 'country': return item.country == 'US'; case 'sales': return item.sales > 9000; case 'downloads': return item.downloads > 19000; default: return true; } } })); }); } render() { return <div className="container-fluid"> <label> <input type="radio" name="filter" value="" defaultChecked={true}/> No Filter </label> <label> <input type="radio" name="filter" value="country"/> US only </label> <label> <input type="radio" name="filter" value="sales"/> Sales > 9,000 </label> <label> <input type="radio" name="filter" value="downloads"/> Downloads > 19,000 </label> <p> Result ({this.state.view.items.length} items): </p> <wjGrid.FlexGrid showAlternatingRows={false} headersVisibility="Column" itemsSource={this.state.view}> </wjGrid.FlexGrid> </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> .wj-flexgrid { max-height: 250px; } label { width: 100% } export function getData() { let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], data = []; // for (let i = 0; i < 1000; i++) { data.push({ id: i, country: countries[i % countries.length], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } // return data; }