import 'bootstrap.css';
import '@grapecity/wijmo.styles/wijmo.css';
import './styles.css';
import * as wjGrid from '@grapecity/wijmo.grid';
import * as wjCore from '@grapecity/wijmo';
//
document.readyState === 'complete' ? init() : window.onload = init;
//
function init() {
//
// create the grid
var theGrid = new wjGrid.FlexGrid('#theGrid', {
childItemsPath: 'children',
headersVisibility: 'Column',
groupCollapsedChanged: groupCollapsedChanged,
autoGenerateColumns: false,
columns: [
{ binding: 'name', header: 'Customer Name', width: '*' },
{ binding: 'id', header: 'ID', align: 'center', cssClass: 'id-column' }
],
itemsSource: getData(),
});
//
// start collapsed
theGrid.collapseGroupsToLevel(0);
//
// update row when items are loaded
function updateRowCount(grid) {
document.getElementById('rowCount').textContent = wjCore.Globalize.format(grid.rows.length, 'n0');
}
updateRowCount(theGrid);
//
// load data when collapse node is expanded
function groupCollapsedChanged(s, e) {
var row = s.rows[e.row], item = row.dataItem;
//
// did we just expand a node with a dummy child?
if (!row.isCollapsed && item.children.length == 1 && item.children[0].name == '') {
//
// can't lazy load while updating rows
if (s.rows.isUpdating) {
row.isCollapsed = true;
return;
}
//
// replace the dummy child with actual nodes
item.children.length = 0;
var cnt = Math.round(Math.random() * 5) + 1;
for (var i = 0; i < cnt; i++) {
var node = createNode();
item.children.push(node);
}
//
// refresh the view
s.collectionView.refresh();
//
// collapse the new item's child items
for (var i = row.index + 1; i < s.rows.length; i++) {
var childRow = s.rows[i];
if (childRow.level <= row.level) {
break;
}
childRow.isCollapsed = true;
}
//
// update row count
updateRowCount(s);
}
}
var nodeId;
function createNode(dummy) {
var first = 'Al,Bob,Cal,Dan,Ed,Fred,Greg,Hal,Ian,Jack,Karl,Lou,Moe,Nate,Oleg,Paul,Quincy,Rod,Sue,Uwe,Vic,Walt,Xiu,Yuri,Zack'.split(','), last = 'Adams,Baum,Cole,Dell,Evans,Fell,Green,Hill,Isman,Jones,Krup,Lee,Monk,Nye,Opus,Pitt,Quaid,Riems,Stark,Trell,Unger,Voss,Wang,Xie,Zalm'.split(','), name = dummy ? '' : getOneOf(first) + ' ' + getOneOf(last), children = [];
if (!dummy) {
children.push(createNode(true));
}
if (nodeId == null)
nodeId = 0;
return { id: nodeId++, name: name, children: children };
}
function getOneOf(arr) {
return arr[Math.floor(Math.random() * arr.length)];
}
// create/retrieve data
function getData() {
var tree = [];
tree.push(createNode());
tree.push(createNode());
return tree;
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>MESCIUS Wijmo FlexGrid Lazy Loading Tree Grid</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- SystemJS -->
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('./src/app');
</script>
</head>
<body>
<div class="container-fluid">
<div id="theGrid">
</div>
<p>
The grid currently has <b id="rowCount"></b> rows.
</p>
</div>
</body>
</html>
.wj-flexgrid {
max-height: 300px;
margin: 12px;
}
.wj-flexgrid .wj-cell {
padding: 8px;
}
.wj-flexgrid .wj-group:not(.wj-state-selected):not(.wj-state-multi-selected) {
background-color: white;
}
.id-column {
font-style: italic;
}
document {
margin-bottom: 48pt;
}
(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',
'@grapecity/wijmo': 'npm:@grapecity/wijmo/index.js',
'@grapecity/wijmo.input': 'npm:@grapecity/wijmo.input/index.js',
'@grapecity/wijmo.styles': 'npm:@grapecity/wijmo.styles',
'@grapecity/wijmo.cultures': 'npm:@grapecity/wijmo.cultures',
'@grapecity/wijmo.chart': 'npm:@grapecity/wijmo.chart/index.js',
'@grapecity/wijmo.chart.analytics': 'npm:@grapecity/wijmo.chart.analytics/index.js',
'@grapecity/wijmo.chart.animation': 'npm:@grapecity/wijmo.chart.animation/index.js',
'@grapecity/wijmo.chart.annotation': 'npm:@grapecity/wijmo.chart.annotation/index.js',
'@grapecity/wijmo.chart.finance': 'npm:@grapecity/wijmo.chart.finance/index.js',
'@grapecity/wijmo.chart.finance.analytics': 'npm:@grapecity/wijmo.chart.finance.analytics/index.js',
'@grapecity/wijmo.chart.hierarchical': 'npm:@grapecity/wijmo.chart.hierarchical/index.js',
'@grapecity/wijmo.chart.interaction': 'npm:@grapecity/wijmo.chart.interaction/index.js',
'@grapecity/wijmo.chart.radar': 'npm:@grapecity/wijmo.chart.radar/index.js',
'@grapecity/wijmo.chart.render': 'npm:@grapecity/wijmo.chart.render/index.js',
'@grapecity/wijmo.chart.webgl': 'npm:@grapecity/wijmo.chart.webgl/index.js',
'@grapecity/wijmo.chart.map': 'npm:@grapecity/wijmo.chart.map/index.js',
'@grapecity/wijmo.gauge': 'npm:@grapecity/wijmo.gauge/index.js',
'@grapecity/wijmo.grid': 'npm:@grapecity/wijmo.grid/index.js',
'@grapecity/wijmo.grid.detail': 'npm:@grapecity/wijmo.grid.detail/index.js',
'@grapecity/wijmo.grid.filter': 'npm:@grapecity/wijmo.grid.filter/index.js',
'@grapecity/wijmo.grid.search': 'npm:@grapecity/wijmo.grid.search/index.js',
'@grapecity/wijmo.grid.grouppanel': 'npm:@grapecity/wijmo.grid.grouppanel/index.js',
'@grapecity/wijmo.grid.multirow': 'npm:@grapecity/wijmo.grid.multirow/index.js',
'@grapecity/wijmo.grid.transposed': 'npm:@grapecity/wijmo.grid.transposed/index.js',
'@grapecity/wijmo.grid.transposedmultirow': 'npm:@grapecity/wijmo.grid.transposedmultirow/index.js',
'@grapecity/wijmo.grid.pdf': 'npm:@grapecity/wijmo.grid.pdf/index.js',
'@grapecity/wijmo.grid.sheet': 'npm:@grapecity/wijmo.grid.sheet/index.js',
'@grapecity/wijmo.grid.xlsx': 'npm:@grapecity/wijmo.grid.xlsx/index.js',
'@grapecity/wijmo.grid.selector': 'npm:@grapecity/wijmo.grid.selector/index.js',
'@grapecity/wijmo.grid.cellmaker': 'npm:@grapecity/wijmo.grid.cellmaker/index.js',
'@grapecity/wijmo.nav': 'npm:@grapecity/wijmo.nav/index.js',
'@grapecity/wijmo.odata': 'npm:@grapecity/wijmo.odata/index.js',
'@grapecity/wijmo.olap': 'npm:@grapecity/wijmo.olap/index.js',
'@grapecity/wijmo.rest': 'npm:@grapecity/wijmo.rest/index.js',
'@grapecity/wijmo.pdf': 'npm:@grapecity/wijmo.pdf/index.js',
'@grapecity/wijmo.pdf.security': 'npm:@grapecity/wijmo.pdf.security/index.js',
'@grapecity/wijmo.viewer': 'npm:@grapecity/wijmo.viewer/index.js',
'@grapecity/wijmo.xlsx': 'npm:@grapecity/wijmo.xlsx/index.js',
'@grapecity/wijmo.undo': 'npm:@grapecity/wijmo.undo/index.js',
'@grapecity/wijmo.interop.grid': 'npm:@grapecity/wijmo.interop.grid/index.js',
'@grapecity/wijmo.touch': 'npm:@grapecity/wijmo.touch/index.js',
'@grapecity/wijmo.cloud': 'npm:@grapecity/wijmo.cloud/index.js',
'@grapecity/wijmo.barcode': 'npm:@grapecity/wijmo.barcode/index.js',
'@grapecity/wijmo.barcode.common': 'npm:@grapecity/wijmo.barcode.common/index.js',
'@grapecity/wijmo.barcode.composite': 'npm:@grapecity/wijmo.barcode.composite/index.js',
'@grapecity/wijmo.barcode.specialized': 'npm:@grapecity/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);
