Arrays and CollectionViews (Angular)

When you set the grid's itemsSource property to a regular JavaScript array, it automatically creates an internal CollectionView and uses that as a data source so it can provide sorting and editing features without forcing you to create a CollectionView yourself. This internal view is exposed by the grid's CollectionView property, and you can use it to in case you need the extra functionality yourself. For example, the grid below is bound to a regular array, and the grid's collectionView property is used to show the currently selected item.

Learn about FlexGrid | Arrays and CollectionViews Documentation | FlexGrid API Reference

This example uses Angular.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import { Component, enableProdMode, NgModule, ViewChild } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import * as wjcCore from '@grapecity/wijmo'; import * as wjcGrid from '@grapecity/wijmo.grid'; import { WjGridModule } from '@grapecity/wijmo.angular2.grid'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: any[]; selectedItem: string; // references FlexGrid named 'flex' in the view @ViewChild('flex', { static: true }) flex: wjcGrid.FlexGrid; // DataSvc will be passed by derived classes constructor() { this.data = this._getData(); } flexInitialized(flexgrid: wjcGrid.FlexGrid) { // sort the data by country let sd = new wjcCore.SortDescription('country', true); flexgrid.collectionView.sortDescriptions.push(sd); flexgrid.collectionView.currentChanged.addHandler(this._updateCurrentInfo.bind(this)); this._updateCurrentInfo(); } private _getData() { // create some random data let countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; for (let i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; } private _updateCurrentInfo() { this.selectedItem = wjcCore.format( 'Country: <b>{country}</b>, Sales: <b>{sales:c0}</b> Expenses: <b>{expenses:c0}</b>', this.flex.collectionView.currentItem); } } // @NgModule({ imports: [WjGridModule, BrowserModule], declarations: [AppComponent], 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 FlexGrid Arrays and CollectionViews Binding</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"> <p [innerHTML]="selectedItem"></p> <!-- the grid --> <wj-flex-grid #flex [itemsSource]="data" (initialized)="flexInitialized(flex)"> <wj-flex-grid-column [header]="'Country'" [binding]="'country'" width="2*"></wj-flex-grid-column> <wj-flex-grid-column [header]="'Sales'" [binding]="'sales'" width="*" format="n2"></wj-flex-grid-column> <wj-flex-grid-column [header]="'Expenses'" [binding]="'expenses'" width="*" format="n2"></wj-flex-grid-column> </wj-flex-grid> </div>
.wj-flexgrid { height: 400px; margin: 6px 0; }
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