<template>
<main class="container-fluid">
<wj-flex-grid :items-source="data" headers-visibility="Column" child-items-path="children"
:group-collapsed-changed="onGroupCollapsedChanged" :initialized="initialGrid">
<wj-flex-grid-column binding="name" header="Customer Name" width="*"></wj-flex-grid-column>
<wj-flex-grid-column binding="id" header="ID" align="center" css-class="id-column"></wj-flex-grid-column>
</wj-flex-grid>
<p>
The grid currently has <b id="rowCount" v-html="rowCountText"></b> rows.
</p>
</main>
</template>
<script setup>
import * as wjcCore from "@mescius/wijmo";
import { getData, createNode } from "./data";
import { ref, onMounted } from "vue";
const data = ref(getData());
const rowCountText = ref("");
const grid = ref(null);
onMounted(function () {
grid.value.collapseGroupsToLevel(0);
_updateRowCount(grid.value);
});
function initialGrid(gridref) {
grid.value = gridref;
}
function onGroupCollapsedChanged(s, e) {
let 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;
let cnt = Math.round(Math.random() * 5) + 1;
for (let i = 0; i < cnt; i++) {
let node = createNode();
item.children.push(node);
}
// refresh the view
s.collectionView.refresh();
// collapse the new item's child items
for (let i = row.index + 1; i < s.rows.length; i++) {
let childRow = s.rows[i];
if (childRow.level <= row.level) {
break;
}
childRow.isCollapsed = true;
}
// update row count
_updateRowCount(s);
}
}
function _updateRowCount(grid) {
rowCountText.value = wjcCore.Globalize.format(grid.rows.length, "n0");
}
</script>
<style>
.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;
}
</style>
<!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="compiler.js" type="module"></script>
<script src="https://cdn.jsdelivr.net/npm/systemjs@0.21.5/dist/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('./src/app.js');
</script>
</head>
<body>
<div id="app">
</div>
</body>
</html>
var nodeId;
export function getData() {
var tree = [];
tree.push(createNode());
tree.push(createNode());
return tree;
}
export 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)];
}
(function (global) {
System.config({
transpiler: 'plugin-babel',
babelOptions: {
es2015: true,
},
meta: {
'*.css': { loader: 'css' },
'*.vue': { loader: '../plugin-vue/index.js' },
//'*.vue': { loader: 'systemjs-plugin-vue' }
},
paths: {
// paths serve as alias
'npm:': 'node_modules/',
'cdn:': 'https://cdn.mescius.io/demoapps/packages/wijmojs/5.20261.50-rc/',
'pcdn:': 'https://cdn.jsdelivr.net/npm/'
},
// map tells the System loader where to look for things
map: {
'@mescius/wijmo': 'cdn:@mescius/wijmo/index.js',
'@mescius/wijmo.input': 'cdn:@mescius/wijmo.input/index.js',
'@mescius/wijmo.styles': 'cdn:@mescius/wijmo.styles',
'@mescius/wijmo.cultures': 'cdn:@mescius/wijmo.cultures',
'@mescius/wijmo.chart': 'cdn:@mescius/wijmo.chart/index.js',
'@mescius/wijmo.chart.analytics': 'cdn:@mescius/wijmo.chart.analytics/index.js',
'@mescius/wijmo.chart.animation': 'cdn:@mescius/wijmo.chart.animation/index.js',
'@mescius/wijmo.chart.annotation': 'cdn:@mescius/wijmo.chart.annotation/index.js',
'@mescius/wijmo.chart.finance': 'cdn:@mescius/wijmo.chart.finance/index.js',
'@mescius/wijmo.chart.finance.analytics': 'cdn:@mescius/wijmo.chart.finance.analytics/index.js',
'@mescius/wijmo.chart.hierarchical': 'cdn:@mescius/wijmo.chart.hierarchical/index.js',
'@mescius/wijmo.chart.interaction': 'cdn:@mescius/wijmo.chart.interaction/index.js',
'@mescius/wijmo.chart.radar': 'cdn:@mescius/wijmo.chart.radar/index.js',
'@mescius/wijmo.chart.render': 'cdn:@mescius/wijmo.chart.render/index.js',
'@mescius/wijmo.chart.webgl': 'cdn:@mescius/wijmo.chart.webgl/index.js',
'@mescius/wijmo.chart.map': 'cdn:@mescius/wijmo.chart.map/index.js',
'@mescius/wijmo.gauge': 'cdn:@mescius/wijmo.gauge/index.js',
'@mescius/wijmo.grid': 'cdn:@mescius/wijmo.grid/index.js',
'@mescius/wijmo.grid.detail': 'cdn:@mescius/wijmo.grid.detail/index.js',
'@mescius/wijmo.grid.filter': 'cdn:@mescius/wijmo.grid.filter/index.js',
'@mescius/wijmo.grid.search': 'cdn:@mescius/wijmo.grid.search/index.js',
'@mescius/wijmo.grid.style': 'cdn:@mescius/wijmo.grid.style/index.js',
'@mescius/wijmo.grid.grouppanel': 'cdn:@mescius/wijmo.grid.grouppanel/index.js',
'@mescius/wijmo.grid.multirow': 'cdn:@mescius/wijmo.grid.multirow/index.js',
'@mescius/wijmo.grid.transposed': 'cdn:@mescius/wijmo.grid.transposed/index.js',
'@mescius/wijmo.grid.transposedmultirow': 'cdn:@mescius/wijmo.grid.transposedmultirow/index.js',
'@mescius/wijmo.grid.pdf': 'cdn:@mescius/wijmo.grid.pdf/index.js',
'@mescius/wijmo.grid.sheet': 'cdn:@mescius/wijmo.grid.sheet/index.js',
'@mescius/wijmo.grid.xlsx': 'cdn:@mescius/wijmo.grid.xlsx/index.js',
'@mescius/wijmo.grid.selector': 'cdn:@mescius/wijmo.grid.selector/index.js',
'@mescius/wijmo.grid.cellmaker': 'cdn:@mescius/wijmo.grid.cellmaker/index.js',
'@mescius/wijmo.nav': 'cdn:@mescius/wijmo.nav/index.js',
'@mescius/wijmo.odata': 'cdn:@mescius/wijmo.odata/index.js',
'@mescius/wijmo.olap': 'cdn:@mescius/wijmo.olap/index.js',
'@mescius/wijmo.rest': 'cdn:@mescius/wijmo.rest/index.js',
'@mescius/wijmo.pdf': 'cdn:@mescius/wijmo.pdf/index.js',
'@mescius/wijmo.pdf.security': 'cdn:@mescius/wijmo.pdf.security/index.js',
'@mescius/wijmo.viewer': 'cdn:@mescius/wijmo.viewer/index.js',
'@mescius/wijmo.xlsx': 'cdn:@mescius/wijmo.xlsx/index.js',
'@mescius/wijmo.undo': 'cdn:@mescius/wijmo.undo/index.js',
'@mescius/wijmo.interop.grid': 'cdn:@mescius/wijmo.interop.grid/index.js',
'@mescius/wijmo.touch': 'cdn:@mescius/wijmo.touch/index.js',
'@mescius/wijmo.cloud': 'cdn:@mescius/wijmo.cloud/index.js',
'@mescius/wijmo.barcode': 'cdn:@mescius/wijmo.barcode/index.js',
'@mescius/wijmo.barcode.common': 'cdn:@mescius/wijmo.barcode.common/index.js',
'@mescius/wijmo.barcode.composite': 'cdn:@mescius/wijmo.barcode.composite/index.js',
'@mescius/wijmo.barcode.specialized': 'cdn:@mescius/wijmo.barcode.specialized/index.js',
'@mescius/wijmo.vue2.chart.analytics': 'cdn:@mescius/wijmo.vue2.chart.analytics/index.js',
'@mescius/wijmo.vue2.chart.animation': 'cdn:@mescius/wijmo.vue2.chart.animation/index.js',
'@mescius/wijmo.vue2.chart.annotation': 'cdn:@mescius/wijmo.vue2.chart.annotation/index.js',
'@mescius/wijmo.vue2.chart.finance.analytics': 'cdn:@mescius/wijmo.vue2.chart.finance.analytics/index.js',
'@mescius/wijmo.vue2.chart.finance': 'cdn:@mescius/wijmo.vue2.chart.finance/index.js',
'@mescius/wijmo.vue2.chart.hierarchical': 'cdn:@mescius/wijmo.vue2.chart.hierarchical/index.js',
'@mescius/wijmo.vue2.chart.interaction': 'cdn:@mescius/wijmo.vue2.chart.interaction/index.js',
'@mescius/wijmo.vue2.chart.radar': 'cdn:@mescius/wijmo.vue2.chart.radar/index.js',
'@mescius/wijmo.vue2.chart.map': 'cdn:@mescius/wijmo.vue2.chart.map/index.js',
'@mescius/wijmo.vue2.chart': 'cdn:@mescius/wijmo.vue2.chart/index.js',
'@mescius/wijmo.vue2.core': 'cdn:@mescius/wijmo.vue2.core/index.js',
'@mescius/wijmo.vue2.gauge': 'cdn:@mescius/wijmo.vue2.gauge/index.js',
'@mescius/wijmo.vue2.grid.detail': 'cdn:@mescius/wijmo.vue2.grid.detail/index.js',
'@mescius/wijmo.vue2.grid.filter': 'cdn:@mescius/wijmo.vue2.grid.filter/index.js',
'@mescius/wijmo.vue2.grid.grouppanel': 'cdn:@mescius/wijmo.vue2.grid.grouppanel/index.js',
'@mescius/wijmo.vue2.grid.search': 'cdn:@mescius/wijmo.vue2.grid.search/index.js',
'@mescius/wijmo.vue2.grid.multirow': 'cdn:@mescius/wijmo.vue2.grid.multirow/index.js',
'@mescius/wijmo.vue2.grid.sheet': 'cdn:@mescius/wijmo.vue2.grid.sheet/index.js',
'@mescius/wijmo.vue2.grid.transposed': 'cdn:@mescius/wijmo.vue2.grid.transposed/index.js',
'@mescius/wijmo.vue2.grid.transposedmultirow': 'cdn:@mescius/wijmo.vue2.grid.transposedmultirow/index.js',
'@mescius/wijmo.vue2.grid': 'cdn:@mescius/wijmo.vue2.grid/index.js',
'@mescius/wijmo.vue2.input': 'cdn:@mescius/wijmo.vue2.input/index.js',
'@mescius/wijmo.vue2.olap': 'cdn:@mescius/wijmo.vue2.olap/index.js',
'@mescius/wijmo.vue2.viewer': 'cdn:@mescius/wijmo.vue2.viewer/index.js',
'@mescius/wijmo.vue2.nav': 'cdn:@mescius/wijmo.vue2.nav/index.js',
'@mescius/wijmo.vue2.base': 'cdn:@mescius/wijmo.vue2.base/index.js',
'@mescius/wijmo.vue2.barcode.common': 'cdn:@mescius/wijmo.vue2.barcode.common/index.js',
'@mescius/wijmo.vue2.barcode.composite': 'cdn:@mescius/wijmo.vue2.barcode.composite/index.js',
'@mescius/wijmo.vue2.barcode.specialized': 'cdn:@mescius/wijmo.vue2.barcode.specialized/index.js',
'bootstrap.css': 'pcdn:bootstrap@3.3.7/dist/css/bootstrap.min.css',
jszip: 'pcdn:jszip@3.8.0/dist/jszip.js',
css: 'pcdn:systemjs-plugin-css@0.1.37/css.js',
vue: 'pcdn:vue@3.4.21/dist/vue.cjs.js',
'@vue/compiler-dom': 'pcdn:@vue/compiler-dom@3.4.21/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom': 'pcdn:@vue/runtime-dom@3.4.21/dist/runtime-dom.global.prod.js',
'@vue/shared': 'pcdn:@vue/shared@3.4.21/dist/shared.cjs.js',
'@vue/compiler-dom': 'pcdn:@vue/compiler-dom@3.4.21/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom': 'pcdn:@vue/runtime-dom@3.4.21/dist/runtime-dom.global.prod.js',
'@vue/shared': 'pcdn:@vue/shared@3.4.21/dist/shared.cjs.js',
'@vue/compiler-dom': 'pcdn:@vue/compiler-dom@3.4.21/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom': 'pcdn:@vue/runtime-dom@3.4.21/dist/runtime-dom.global.prod.js',
'@vue/shared': 'pcdn:@vue/shared@3.4.21/dist/shared.cjs.js',
'@vue/compiler-dom': 'pcdn:@vue/compiler-dom@3.4.21/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom': 'pcdn:@vue/runtime-dom@3.4.21/dist/runtime-dom.global.prod.js',
'@vue/shared': 'pcdn:@vue/shared@3.4.21/dist/shared.cjs.js',
'@vue/compiler-dom': 'pcdn:@vue/compiler-dom@3.4.21/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom': 'pcdn:@vue/runtime-dom@3.4.21/dist/runtime-dom.global.prod.js',
'@vue/shared': 'pcdn:@vue/shared@3.4.21/dist/shared.cjs.js',
'@vue/compiler-dom': 'pcdn:@vue/compiler-dom@3.4.21/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom': 'pcdn:@vue/runtime-dom@3.4.21/dist/runtime-dom.global.prod.js',
'@vue/shared': 'pcdn:@vue/shared@3.4.21/dist/shared.cjs.js',
'@vue/compiler-dom': 'pcdn:@vue/compiler-dom@3.4.21/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom': 'pcdn:@vue/runtime-dom@3.4.21/dist/runtime-dom.global.prod.js',
'@vue/shared': 'pcdn:@vue/shared@3.4.21/dist/shared.cjs.js',
'@vue/compiler-dom': 'pcdn:@vue/compiler-dom@3.4.21/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom': 'pcdn:@vue/runtime-dom@3.4.21/dist/runtime-dom.global.prod.js',
'@vue/shared': 'pcdn:@vue/shared@3.4.21/dist/shared.cjs.js',
'vue-loader': 'pcdn:systemjs-vue-browser@1.0.11/index.js',
//'systemjs-plugin-vue': 'pcdn:systemjs-plugin-vue@1.2.0/index.js',
'plugin-babel': 'pcdn:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'pcdn:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
src: {
defaultExtension: 'js',
},
rxjs: {
defaultExtension: 'js',
},
node_modules: {
defaultExtension: 'js',
},
wijmo: {
defaultExtension: 'js',
},
},
});
})(this);
