Binding TreeGrid to XML Documents (Angular)

This sample shows how you create a TreeGrid by using XML documents as a hierarchical data source for the FlexGrid control. It uses a DOMParser object to parse an XML string into a Document object and loops through the Document to build an array with "category" items, each with a "products" array. The array is used as an itemsSource and the childItemsPath property is used to show the products for each category as a TreeGrid.

Learn about TreeGrid | Binding to XML Documentation | FlexGrid 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, ɵresolveComponentResources } from '@angular/core'; import { BrowserModule, bootstrapApplication } from '@angular/platform-browser'; import { WjGridModule } from '@mescius/wijmo.angular2.grid'; import { DataService } from './app.data'; // @Component({ standalone: true, providers: [DataService], imports: [WjGridModule, BrowserModule], selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: any; // DataSvc will be passed by derived classes constructor(@Inject(DataService) private dataService: DataService) { this.data = dataService.getProductsByCategory() } } //\\ // enableProdMode(); // Resolve resources (templateUrl, styleUrls etc), After resolution all URLs have been converted into `template` strings. ɵresolveComponentResources(fetch).then(() => { // Bootstrap application bootstrapApplication(AppComponent).catch(err => console.error(err)); });
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Tree Grid Binding to XML Documents</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"> <wj-flex-grid [itemsSource]="data" [headersVisibility]="'Column'" [childItemsPath]="'products'" [treeIndent]=25 [autoGenerateColumns]=false> <wj-flex-grid-column [binding]="'name'" [header]="'Name'" [width]="'3*'"></wj-flex-grid-column> <wj-flex-grid-column [binding]="'id'" [header]="'ID'" [dataType]="'String'" [width]="'*'"></wj-flex-grid-column> <wj-flex-grid-column [binding]="'price'" [header]="'Unit Price'" [format]="'n2'" [dataType]="'Number'" [width]="'*'"></wj-flex-grid-column> </wj-flex-grid> </div>
import { Injectable } from '@angular/core'; interface Product { id: number; name: string; price: number; } interface DataItem { id: number; name: string; products: Product[] } function getXml() { return '<categories>' + '<category id="0" name="Beverages">' + '<product id="1" name="Chai" price="18" />' + '<product id="2" name="Chang" price="19" />' + '<product id="24" name="Guarana Fantastica" price="4.5" />' + '<product id="34" name="Sasquatch Ale" price="14" />' + '</category>' + '<category id="1" name="Condiments">' + '<product id="3" name="Aniseed Syrup" price="10" />' + '<product id="4" name="Chef Anton\'s Cajun Seasoning" price="22" />' + '<product id="5" name="Chef Anton\'s Gumbo Mix" price="21.35" />' + '<product id="6" name="Grandma\'s Boysenberry Spread" price="25" />' + '<product id="8" name="Northwoods Cranberry Sauce" price="40" />' + '<product id="15" name=" Genen Shouyu" price="15.5" />' + '</category>' + '<category id="2" name="Confections">' + '<product id="16" name="Pavlova" price="17.45" />' + '<product id="19" name="Teatime Chocolate Biscuits" price="9.2" />' + '<product id="20" name="Sir Rodney\'s Marmalade" price="81" />' + '<product id="21" name="Sir Rodney\'s Scones" price="10" />' + '<product id="25" name="NuNuCa Nuß-Nougat-Creme" price="14" />' + '<product id="26" name="Gumbär Gummibärchen" price="31.23" />' + '<product id="27" name="Schoggi Schokolade" price="43.9" />' + '</category>' + '<category id="3" name="Dairy Products">' + '<product id="11" name="Queso Cabrales" price="21" />' + '<product id="12" name="Queso Manchego La Pastora" price="38" />' + '<product id="31" name="Gorgonzola Telino" price="12.5" />' + '<product id="32" name="Mascarpone Fabioli" price="32" />' + '<product id="33" name="Geitost" price="2.5" />' + '<product id="59" name="Raclette Courdavault" price="55" />' + '<product id="60" name="Camembert Pierrot" price="34" />' + '<product id="69" name="Gudbrandsdalsost" price="36" />' + '</category>' + '<category id="4" name="Grains/Cereals">' + '<product id="22" name="Gustaf\'s Knäckebröd" price="21" />' + '<product id="23" name="Tunnbröd" price="9" />' + '<product id="42" name="Singaporean Hokkien Fried Mee" price="14" />' + '<product id="52" name="Filo Mix" price="7" />' + '<product id="56" name="Gnocchi di nonna Alice" price="38" />' + '<product id="57" name="Ravioli Angelo" price="19.5" />' + '<product id="64" name="Wimmers gute Semmelknödel" price="33.25" />' + '</category>' + '<category id="5" name="Meat/Poultry">' + '<product id="9" name="Mishi Kobe Niku" price="97" />' + '<product id="17" name="Alice Mutton" price="39" />' + '<product id="29" name="Thüringer Rostbratwurst" price="123.79" />' + '<product id="53" name="Perth Pasties" price="32.8" />' + '<product id="54" name="Tourtière" price="7.45" />' + '<product id="55" name="Pâté chinois" price="24" />' + '</category>' + '<category id="6" name="Produce">' + '<product id="7" name="Uncle Bob\'s Organic Dried Pears" price="30" />' + '<product id="14" name="Tofu" price="23.25" />' + '<product id="28" name="Rössle Sauerkraut" price="45.6" />' + '<product id="51" name="Manjimup Dried Apples" price="53" />' + '<product id="74" name="Longlife Tofu" price="10" />' + '</category>' + '<category id="7" name="Seafood">' + '<product id="10" name="Ikura" price="31" />' + '<product id="13" name="Konbu" price="6" />' + '<product id="18" name="Carnarvon Tigers" price="62.5" />' + '<product id="30" name="Nord-Ost Matjeshering" price="25.89" />' + '<product id="36" name="Inlagd Sill" price="19" />' + '<product id="37" name="Gravad lax" price="26" />' + '<product id="40" name="Boston Crab Meat" price="18.4" />' + '</category>' + '</categories>'; } @Injectable() export class DataService { getProductsByCategory(): DataItem[] { var items = [], parser = new DOMParser(), xml = getXml(), doc = parser.parseFromString(xml, 'application/xml'); // // get categories var categories = doc.querySelectorAll('category'); for (var c = 0; c < categories.length; c++) { var category = categories[c]; items.push({ id: parseInt(category.getAttribute('id')), name: category.getAttribute('name'), products: [] }); // // get products in this category var products = category.querySelectorAll('product'); for (var p = 0; p < products.length; p++) { var product = products[p]; items[items.length - 1].products.push({ id: parseInt(product.getAttribute('id')), name: product.getAttribute('name'), price: parseFloat(product.getAttribute('price')) }) } } // // all done return items; } }
.wj-flexgrid { height: 300px; } .wj-flexgrid .wj-group:not(.wj-state-selected):not(.wj-state-multi-selected) { background: white; color: #444; border-bottom: none; }
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packages: { "./src": { defaultExtension: 'ts' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);