import 'bootstrap.css';
import '@mescius/wijmo.styles/wijmo.css';
import './styles.css';
import * as wjNav from '@mescius/wijmo.nav';
import * as wjOdata from '@mescius/wijmo.odata';
import * as wjCore from '@mescius/wijmo';
//
document.readyState === 'complete' ? init() : window.onload = init;
//
function init() {
//
// NorthWind service URL
var nwindService = 'https://services.odata.org/Northwind/Northwind.svc';
//
// create the tree
var tree = new wjNav.TreeView('#theTree', {
displayMemberPath: ['FullName', 'ShipName', 'Summary'],
childItemsPath: ['Orders', 'Order_Details'],
lazyLoadFunction: lazyLoadODataFunction,
});
//
// get employee list
var view = new wjOdata.ODataCollectionView(nwindService, 'Employees', {
fields: 'EmployeeID,FirstName,LastName'.split(','),
loaded: function (s, e) {
//
// when the data is loaded, add FullName and Orders array to employees
var items = s.items.map(function (employee) {
employee.FullName = employee.FirstName + ' ' + employee.LastName;
employee.Orders = []; // lazy-load orders
});
//
// populate the tree with the employees array
tree.itemsSource = s.items;
}
});
//
// lazy-load orders and details
function lazyLoadODataFunction(node, callback) {
switch (node.level) {
//
// load orders for an employee
case 0:
var url = 'Employees(' + node.dataItem.EmployeeID + ')/Orders';
var orders = new wjOdata.ODataCollectionView(nwindService, url, {
fields: 'OrderID,ShipName,ShipCountry'.split(','),
loaded: function () {
var items = orders.items.map(function (e) {
e.Order_Details = []; // lazy-order details
return e;
});
callback(items);
}
});
break;
//
// load extended details for an order
case 1:
var url = "Order_Details_Extendeds?$filter=OrderID eq " + node.dataItem.OrderID;
var details = new wjOdata.ODataCollectionView(nwindService, url, {
fields: 'ProductName,ExtendedPrice'.split(','),
loaded: function () {
var items = details.items.map(function (e) {
e.Summary = wjCore.format('{ProductName}: {ExtendedPrice:c}', e);
return e;
});
callback(items);
}
});
break;
//
// default
default:
callback(null);
}
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>MESCIUS Wijmo TreeView Lazy Loading OData</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 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>
System.import('./src/app');
</script>
</head>
<body>
<div class="container-fluid">
<div id="theTree"></div>
</div>
</body>
</html>
/* level 0 nodes and deeper (employees...) */
.wj-treeview .wj-nodelist > .wj-node {
font-weight: bold;
}
/* level 1 nodes and deeper (orders...) */
.wj-treeview .wj-nodelist > .wj-nodelist > .wj-node {
font-weight: normal;
font-size: 95%;
color: darkblue;
}
/* level 2 nodes and deeper (order details...) */
.wj-treeview .wj-nodelist > .wj-nodelist > .wj-nodelist > .wj-node {
font-size: 90%;
color: darkslategrey;
}
/* default trees on this sample */
.wj-treeview {
display:block;
height: 350px;
font-size: 120%;
margin-top: 8px;
margin-bottom: 8px;
padding: 6px;
background: #f0f0f0;
box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
}
body {
margin-bottom: 24pt;
}
(function (global) {
System.config({
transpiler: 'plugin-babel',
babelOptions: {
es2015: true
},
meta: {
'*.css': { loader: 'css' }
},
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
'jszip': 'npm:jszip/dist/jszip.js',
'@mescius/wijmo': 'npm:@mescius/wijmo/index.js',
'@mescius/wijmo.input': 'npm:@mescius/wijmo.input/index.js',
'@mescius/wijmo.styles': 'npm:@mescius/wijmo.styles',
'@mescius/wijmo.cultures': 'npm:@mescius/wijmo.cultures',
'@mescius/wijmo.chart': 'npm:@mescius/wijmo.chart/index.js',
'@mescius/wijmo.chart.analytics': 'npm:@mescius/wijmo.chart.analytics/index.js',
'@mescius/wijmo.chart.animation': 'npm:@mescius/wijmo.chart.animation/index.js',
'@mescius/wijmo.chart.annotation': 'npm:@mescius/wijmo.chart.annotation/index.js',
'@mescius/wijmo.chart.finance': 'npm:@mescius/wijmo.chart.finance/index.js',
'@mescius/wijmo.chart.finance.analytics': 'npm:@mescius/wijmo.chart.finance.analytics/index.js',
'@mescius/wijmo.chart.hierarchical': 'npm:@mescius/wijmo.chart.hierarchical/index.js',
'@mescius/wijmo.chart.interaction': 'npm:@mescius/wijmo.chart.interaction/index.js',
'@mescius/wijmo.chart.radar': 'npm:@mescius/wijmo.chart.radar/index.js',
'@mescius/wijmo.chart.render': 'npm:@mescius/wijmo.chart.render/index.js',
'@mescius/wijmo.chart.webgl': 'npm:@mescius/wijmo.chart.webgl/index.js',
'@mescius/wijmo.chart.map': 'npm:@mescius/wijmo.chart.map/index.js',
'@mescius/wijmo.gauge': 'npm:@mescius/wijmo.gauge/index.js',
'@mescius/wijmo.grid': 'npm:@mescius/wijmo.grid/index.js',
'@mescius/wijmo.grid.detail': 'npm:@mescius/wijmo.grid.detail/index.js',
'@mescius/wijmo.grid.filter': 'npm:@mescius/wijmo.grid.filter/index.js',
'@mescius/wijmo.grid.search': 'npm:@mescius/wijmo.grid.search/index.js',
'@mescius/wijmo.grid.grouppanel': 'npm:@mescius/wijmo.grid.grouppanel/index.js',
'@mescius/wijmo.grid.multirow': 'npm:@mescius/wijmo.grid.multirow/index.js',
'@mescius/wijmo.grid.transposed': 'npm:@mescius/wijmo.grid.transposed/index.js',
'@mescius/wijmo.grid.transposedmultirow': 'npm:@mescius/wijmo.grid.transposedmultirow/index.js',
'@mescius/wijmo.grid.pdf': 'npm:@mescius/wijmo.grid.pdf/index.js',
'@mescius/wijmo.grid.sheet': 'npm:@mescius/wijmo.grid.sheet/index.js',
'@mescius/wijmo.grid.xlsx': 'npm:@mescius/wijmo.grid.xlsx/index.js',
'@mescius/wijmo.grid.selector': 'npm:@mescius/wijmo.grid.selector/index.js',
'@mescius/wijmo.grid.cellmaker': 'npm:@mescius/wijmo.grid.cellmaker/index.js',
'@mescius/wijmo.nav': 'npm:@mescius/wijmo.nav/index.js',
'@mescius/wijmo.odata': 'npm:@mescius/wijmo.odata/index.js',
'@mescius/wijmo.olap': 'npm:@mescius/wijmo.olap/index.js',
'@mescius/wijmo.rest': 'npm:@mescius/wijmo.rest/index.js',
'@mescius/wijmo.pdf': 'npm:@mescius/wijmo.pdf/index.js',
'@mescius/wijmo.pdf.security': 'npm:@mescius/wijmo.pdf.security/index.js',
'@mescius/wijmo.viewer': 'npm:@mescius/wijmo.viewer/index.js',
'@mescius/wijmo.xlsx': 'npm:@mescius/wijmo.xlsx/index.js',
'@mescius/wijmo.undo': 'npm:@mescius/wijmo.undo/index.js',
'@mescius/wijmo.interop.grid': 'npm:@mescius/wijmo.interop.grid/index.js',
'@mescius/wijmo.touch': 'npm:@mescius/wijmo.touch/index.js',
'@mescius/wijmo.cloud': 'npm:@mescius/wijmo.cloud/index.js',
'@mescius/wijmo.barcode': 'npm:@mescius/wijmo.barcode/index.js',
'@mescius/wijmo.barcode.common': 'npm:@mescius/wijmo.barcode.common/index.js',
'@mescius/wijmo.barcode.composite': 'npm:@mescius/wijmo.barcode.composite/index.js',
'@mescius/wijmo.barcode.specialized': 'npm:@mescius/wijmo.barcode.specialized/index.js',
'jszip': 'npm:jszip/dist/jszip.js',
'bootstrap.css': 'npm:bootstrap/dist/css/bootstrap.min.css',
'css': 'npm:systemjs-plugin-css/css.js',
'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js',
'systemjs-babel-build':'npm:systemjs-plugin-babel/systemjs-babel-browser.js'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
src: {
defaultExtension: 'js'
},
"node_modules": {
defaultExtension: 'js'
},
}
});
})(this);
