jqwidgets-scripts-custom/demos/Angular/treegrid/nestedxmldata/src/app/app.component.ts

jQWidgets is an advanced jQuery, Angular 7, Vue, React, ASP .NET MVC, Custom Elements and HTML5 UI framework.

import { Component, ViewChild } from '@angular/core';

import { jqxTreeGridComponent } from 'jqwidgets-scripts/jqwidgets-ts/angular_jqxtree';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html'
})

export class AppComponent {
    @ViewChild('myTreeGrid') myTreeGrid: jqxTreeGridComponent;

     source: any =
        {
         dataType: 'xml',
         dataFields: [
             { name: 'EmployeeID', type: 'number' },
             { name: 'ReportsTo', type: 'number' },
             { name: 'FirstName', type: 'string' },
             { name: 'LastName', type: 'string' },
             { name: 'City', type: 'string' },
             { name: 'Address', type: 'string' },
             { name: 'Title', type: 'string' },
             { name: 'HireDate', type: 'date' },
             { name: 'BirthDate', type: 'date' }
         ],
         hierarchy:
         {
             root: 'Employees',
             record: 'Employee'
         },
         id: 'EmployeeID',
         root: 'Employees',
         record: 'Employee',
         url: '../assets/employeesadv.txt'
    };

	getWidth() : any {
		if (document.body.offsetWidth < 850) {
			return '90%';
		}
		
		return 850;
	}

     dataAdapter: any = new jqx.dataAdapter(this.source);

     columns: any[] =
     [
         { text: 'FirstName', dataField: 'FirstName', minWidth: 100, width: 200 },
         { text: 'LastName', dataField: 'LastName', width: 200 },
         { text: 'Title', dataField: 'Title', width: 300 },
         { text: 'Address', dataField: 'Address', width: 200 },
         { text: 'City', dataField: 'City', width: 150 },
         { text: 'Birth Date', dataField: 'BirthDate', cellsFormat: 'd', width: 120 },
         { text: 'Hire Date', dataField: 'HireDate', cellsFormat: 'd', width: 120 }
     ];

     ready = (): void => {
         this.myTreeGrid.expandRow(2);
     };
}