Field ShowAs (Angular)

The PivotField.showAs property allows you to specify common calculations to be performed on the field value before it is displayed. Options for this property are defined by the ShowAs enumeration and include differences between the value and the one in the previous row or column, percentages over the row, column, or grand total, and running totals.

This example uses Angular.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import '@grapecity/wijmo.touch'; // support drag/drop on touch devices import * as wjOlap from '@grapecity/wijmo.olap'; import * as wjInput from '@grapecity/wijmo.input'; // import { Component, Inject, enableProdMode, NgModule } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { WjInputModule } from '@grapecity/wijmo.angular2.input'; import { WjOlapModule } from '@grapecity/wijmo.angular2.olap'; import { DataService } from './app.data'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { ng: wjOlap.PivotEngine; fld: wjOlap.PivotField; showAsOptions: string[]; showAsText: string; // constructor(@Inject(DataService) private dataService: DataService) { this.ng = new wjOlap.PivotEngine({ autoGenerateFields: false, // turn off auto-generation fields: [ // specify the fields we want (no date) { binding: 'date', header: 'Year', format: 'yyyy' }, { binding: 'date', header: 'Period', format: 'MMM' }, { binding: 'buyer', header: 'Person' }, { binding: 'type', header: 'Category' }, { binding: 'amount', header: 'Amount', format: 'c0', aggregate: 'Sum' }, { binding: 'amount', header: 'Show As', format: 'c0', aggregate: 'Sum' }, ], itemsSource: dataService.getData(1000), // raw data showRowTotals: 'Subtotals', valueFields: ['Amount', 'Show As'], // show amount spent rowFields: ['Year', 'Period'] // by Year and Quarter }); this.fld = this.ng.fields.getField('Show As'); this.showAsText = wjOlap.ShowAs[this.fld.showAs]; // this.showAsOptions = 'NoCalculation,DiffRow,DiffRowPct,DiffCol,DiffColPct,PctGrand,PctRow,PctCol,RunTot,RunTotPct'.split(','); } // onTextChanged(combox: wjInput.ComboBox) { this.fld.showAs = wjOlap.ShowAs[combox.text]; this.fld.format = combox.text.indexOf('Pct') > -1 ? 'p0' : 'c0'; } // onPeriodInColumns(e: MouseEvent) { let list = (e.target as HTMLInputElement).checked ? this.ng.columnFields : this.ng.rowFields; list.push('Period'); } } // @NgModule({ imports: [WjOlapModule, WjInputModule, 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 OLAP Fields ShowAs Functions</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"> <wj-pivot-grid [itemsSource]="ng"> </wj-pivot-grid> <p> Change the value of the field's <b>showAs</b> property: </p> <wj-combo-box #combo [itemsSource]="showAsOptions" [text]="showAsText" (textChanged)="onTextChanged(combo)"> </wj-combo-box> <p> <label> Show Period in columns <input id="periodInColumns" type="checkbox" (click)="onPeriodInColumns($event)"> </label> </p> </div>
import { Injectable } from '@angular/core'; import * as wjCore from '@grapecity/wijmo'; export interface DataItem { date: Date; buyer: string; type: string; amount: number; } function randomItem(arr: string[]): string { return arr[Math.floor(Math.random() * arr.length)]; } @Injectable() export class DataService { getData(cnt: number): DataItem[] { var today = new Date(), buyers = 'Mom,Dad,Kelly,Sheldon'.split(','), types = 'Food,Clothes,Fuel,Books,Sports,Music'.split(','), data = []; for (var i = 0; i < cnt; i++) { data.push({ date: wjCore.DateTime.addDays(today, -Math.random() * 365 * 3), buyer: randomItem(buyers), type: randomItem(types), amount: 20 + Math.random() * 1000 }); } return data; } }
.container>label { width: 120px; text-align: right; } .container>.wj-control { margin-bottom: 6px; } .wj-flexgrid { height: 200px; } body { margin-bottom: 24pt; }
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