FlexGrid Spinners (Angular)

This sample shows how you can add spinners to the FlexGrid control to indicate it is loading data. The basic idea is to add a spinner element to the grid when you start loading the data, and remove the spinner when you get the data back.

Learn about FlexGrid | Loading Data Documentation | CollectionView API Reference

This example uses Angular.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; // import '@angular/compiler'; import { Component, Inject, enableProdMode, NgModule } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { DataService } from './app.data'; import { WjGridModule } from '@mescius/wijmo.angular2.grid'; import { WjGaugeModule } from '@mescius/wijmo.angular2.gauge'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { gifCtx = { loading: false, data: <any>null, } // gaugeCtx = { loading: false, data: <any>null, progress: 0, interval: <any>null } // constructor(@Inject(DataService) private dataService: DataService) { } // loadDataGif() { this.gifCtx.loading = true; this.dataService.getData((data) => { this.gifCtx.data = data; this.gifCtx.loading = false; }, 3000); } // loadDataGauge() { clearInterval(this.gaugeCtx.interval); // this.gaugeCtx.loading = true; this.gaugeCtx.progress = 0; this.gaugeCtx.interval = setInterval(() => { this.gaugeCtx.progress = (this.gaugeCtx.progress + 1) % 100; }, 50); // this.dataService.getData((data) => { clearInterval(this.gaugeCtx.interval); this.gaugeCtx.data = data; this.gaugeCtx.loading = false; }, 3000); } } // @NgModule({ imports: [WjGaugeModule, 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>MESCIUS Wijmo FlexGrid Spinners</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/fesm2015/zone.min.js"></script> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></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"> <h3> GIF Spinners</h3> <p> This example shows an animated GIF while the grid is loading:</p> <button class="btn btn-primary" (click)="loadDataGif()"> Load Grid Using GIF Spinner </button> <div> <div *ngIf="gifCtx.loading" class="spinner"> <img src="resources/Rounded%20blocks.gif"> </div> <wj-flex-grid *ngIf="!gifCtx.loading" [itemsSource]="gifCtx.data"> </wj-flex-grid> </div> <h3> Gauge Spinners </h3> <p> This example shows an animated RadialGauge while the grid is loading:</p> <button class="btn btn-primary" (click)="loadDataGauge()"> Load Grid Using Gauge Spinner </button> <div> <wj-radial-gauge *ngIf="gaugeCtx.loading" class="spinner" [isAnimated]="false" [showText]="'None'" [sweepAngle]="360" [step]="5" [showTicks]="true" [value]="gaugeCtx.progress"> <wj-range [wjProperty]="'face'" [color]="'transparent'"></wj-range> </wj-radial-gauge> <wj-flex-grid *ngIf="!gaugeCtx.loading" [itemsSource]="gaugeCtx.data"> </wj-flex-grid> </div> </div>
import { Injectable } from '@angular/core'; // @Injectable() export class DataService { getData(callback: (data: any[]) => void, delay: number) { let countries = ['US', 'UK', 'China', 'Germany', 'India'], data: any[] = []; // for (let i = 0; i < 1000; i++) { data.push({ id: i, country: countries[i % countries.length], sales: Math.random() * 1000, downloads: Math.random() * 10000, }); } // setTimeout(() => callback(data), delay); } }
.wj-flexgrid { max-height: 250px; } .wj-radialgauge.spinner { margin: auto auto; padding-bottom: 32px; max-width: 200px; } .spinner img, .spinner.wj-gauge { display: block; margin: auto; } .btn { margin-bottom: 6px; } body { margin-bottom: 24pt; }
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packages: { "./src": { defaultExtension: 'ts' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);