jqwidgets-framework/demos/Angular/src/pivotgrid/totals/app.component.ts

jQWidgets is an advanced Angular, Vue, Blazor, React, Web Components, jquery, ASP .NET MVC, Custom Elements and HTML5 UI framework.

import { Component, AfterContentInit, ViewChild, AfterViewInit } from '@angular/core';
import { jqxPivotGridComponent } from 'jqwidgets-ng/jqxpivotgrid';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
	@ViewChild('pivotGrid1', { static: false }) pivotGrid1: jqxPivotGridComponent; 

	constructor()
	{
		this.pivotDataSource = this.createPivotDataSource();
	}
	
	ngAfterViewInit(): void {
	   this.pivotGrid1.getPivotRows().items[0].expand();
	   this.pivotGrid1.refresh();
	}

	getWidth() : any {
		if (document.body.offsetWidth < 850) {
			return '90%';
		}
		
		return 850;
	}
	
	pivotDataSource: null;
 
	createPivotDataSource(): any {
		// prepare sample data
		let data = new Array();

		let firstNames =
		[
			"Andrew", "Nancy", "Shelley", "Regina", "Yoshi", "Antoni", "Mayumi", "Ian", "Peter", "Lars"
		];

		let lastNames =
		[
			"Fuller", "Davolio", "Burke", "Murphy", "Nagase", "Saavedra", "Ohno", "Devling", "Wilson"
		];

		let productNames =
		[
			"Caffe Espresso", "Caffe Latte"
		];

		let priceValues =
		[
			"2.25", "1.5", "3.0", "3.3", "4.5", "3.6", "3.8", "2.5", "5.0", "1.75", "3.25", "4.0"
		];

		for (let i = 0; i < 100; i++) {
			let row = {};
			let productindex = Math.floor(Math.random() * productNames.length);
			let price = parseFloat(priceValues[productindex]);
			let quantity = 1 + Math.round(Math.random() * 10);

			row["firstname"] = firstNames[Math.floor(Math.random() * firstNames.length)];
			row["lastname"] = lastNames[Math.floor(Math.random() * lastNames.length)];
			row["productname"] = productNames[productindex];
			row["price"] = price;
			row["quantity"] = quantity;
			row["total"] = price * quantity;

			data[i] = row;
		}

		// create a data source and data adapter
		let source =
		{
		   localdata: data,
		   datatype: "array",
		   datafields:
		   [
				{ name: 'firstname', type: 'string' },
				{ name: 'lastname', type: 'string' },
				{ name: 'productname', type: 'string' },
				{ name: 'quantity', type: 'number' },
				{ name: 'price', type: 'number' },
				{ name: 'total', type: 'number' }
		   ]
		};

		let dataAdapter = new jqx.dataAdapter(source);
		dataAdapter.dataBind();
		
		// create a pivot data source from the dataAdapter
		let pivotDataSource = new jqx.pivot(
		   dataAdapter,
		   {
				pivotValuesOnRows: false,
				totals: {rows: {subtotals: true, grandtotals: true}, columns: {subtotals: false, grandtotals: true}},
				rows: [{ dataField: 'firstname' }, { dataField: 'lastname'}],
				columns: [{ dataField: 'productname' }],
				values: [
					{ dataField: 'price', 'function': 'sum', text: 'sum', width: NamedNodeMap, formatSettings: { prefix: '$', decimalPlaces: 2 } },
					{ dataField: 'price', 'function': 'count', text: 'count' },
					{ dataField: 'price', 'function': 'average', text: 'average', formatSettings: { prefix: '$', decimalPlaces: 2} }
				]
		   }
		);
		
		return pivotDataSource;		
	}
}