<template>
<div class="container-fluid">
<wj-tree-view :itemsSource="data" displayMemberPath="header" childItemsPath="items" :isContentHtml=true
:allowDragging=true :expandOnClick=false :autoCollapse=false :lazyLoadFunction="lazyLoadFunction"
:isCollapsedChanging="onIsCollapsedChanging">
</wj-tree-view>
</div>
</template>
<script setup>
import * as wjCore from "@mescius/wijmo";
import { getData } from "./data";
import { ref } from "vue";
const data = ref(getData());
function lazyLoadFunction(node, callback) {
setTimeout(function () {
let result = $_getLazyData();
callback(result);
}, 1000);
}
function onIsCollapsedChanging(s, e) {
let node = e.node,
tree = node.treeView;
//
if (!node.isCollapsed && node.dataItem.reload) {
// remove previous lazy-loaded items from data source
node.dataItem.items = [];
//
// re-bind the tree to remove the old nodes
tree.loadTree();
}
}
function $_getLazyData() {
let creationTime = wjCore.Globalize.format(new Date(), "hh:mm:ss");
let emptyArray = [];
return [
{ header: "Empty Node at: " + creationTime },
{
header: "Node with child nodes at: " + creationTime,
items: [{ header: "hello" }, { header: "world" }],
},
{
header: "Lazy node <i>(reload when opening)</i>",
items: emptyArray,
reload: true,
},
];
}
</script>
<style>
.container-fluid .wj-treeview {
background-color: rgba(0, 0, 0, 0.1);
padding: 12px;
box-shadow: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23);
height: 400px;
}
</style>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>MESCIUS Wijmo TreeView Lazy Re-Loading</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- SystemJS -->
<script src="compiler.js" type="module"></script>
<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.js');
</script>
</head>
<body>
<div id="app">
</div>
</body>
</html>
export function getData() {
return [
{ header: 'Electronics <i>(reload when opening)</i>', items: [], reload: true },
{ header: 'Toys <i>(load once)</i>', items: [] },
{ header: 'Home <i>(load once)</i>', items: [] }
];
}
(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/'
},
// map tells the System loader where to look for things
map: {
'@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.style': 'npm:@mescius/wijmo.grid.style/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',
"@mescius/wijmo.vue2.chart.analytics": "npm:@mescius/wijmo.vue2.chart.analytics/index.js",
"@mescius/wijmo.vue2.chart.animation": "npm:@mescius/wijmo.vue2.chart.animation/index.js",
"@mescius/wijmo.vue2.chart.annotation": "npm:@mescius/wijmo.vue2.chart.annotation/index.js",
"@mescius/wijmo.vue2.chart.finance.analytics": "npm:@mescius/wijmo.vue2.chart.finance.analytics/index.js",
"@mescius/wijmo.vue2.chart.finance": "npm:@mescius/wijmo.vue2.chart.finance/index.js",
"@mescius/wijmo.vue2.chart.hierarchical": "npm:@mescius/wijmo.vue2.chart.hierarchical/index.js",
"@mescius/wijmo.vue2.chart.interaction": "npm:@mescius/wijmo.vue2.chart.interaction/index.js",
"@mescius/wijmo.vue2.chart.radar": "npm:@mescius/wijmo.vue2.chart.radar/index.js",
'@mescius/wijmo.vue2.chart.map': 'npm:@mescius/wijmo.vue2.chart.map/index.js',
"@mescius/wijmo.vue2.chart": "npm:@mescius/wijmo.vue2.chart/index.js",
"@mescius/wijmo.vue2.core": "npm:@mescius/wijmo.vue2.core/index.js",
"@mescius/wijmo.vue2.gauge": "npm:@mescius/wijmo.vue2.gauge/index.js",
"@mescius/wijmo.vue2.grid.detail": "npm:@mescius/wijmo.vue2.grid.detail/index.js",
"@mescius/wijmo.vue2.grid.filter": "npm:@mescius/wijmo.vue2.grid.filter/index.js",
"@mescius/wijmo.vue2.grid.grouppanel": "npm:@mescius/wijmo.vue2.grid.grouppanel/index.js",
'@mescius/wijmo.vue2.grid.search': 'npm:@mescius/wijmo.vue2.grid.search/index.js',
"@mescius/wijmo.vue2.grid.multirow": "npm:@mescius/wijmo.vue2.grid.multirow/index.js",
"@mescius/wijmo.vue2.grid.sheet": "npm:@mescius/wijmo.vue2.grid.sheet/index.js",
'@mescius/wijmo.vue2.grid.transposed': 'npm:@mescius/wijmo.vue2.grid.transposed/index.js',
'@mescius/wijmo.vue2.grid.transposedmultirow': 'npm:@mescius/wijmo.vue2.grid.transposedmultirow/index.js',
"@mescius/wijmo.vue2.grid": "npm:@mescius/wijmo.vue2.grid/index.js",
"@mescius/wijmo.vue2.input": "npm:@mescius/wijmo.vue2.input/index.js",
"@mescius/wijmo.vue2.olap": "npm:@mescius/wijmo.vue2.olap/index.js",
"@mescius/wijmo.vue2.viewer": "npm:@mescius/wijmo.vue2.viewer/index.js",
"@mescius/wijmo.vue2.nav": "npm:@mescius/wijmo.vue2.nav/index.js",
"@mescius/wijmo.vue2.base": "npm:@mescius/wijmo.vue2.base/index.js",
'@mescius/wijmo.vue2.barcode.common': 'npm:@mescius/wijmo.vue2.barcode.common/index.js',
'@mescius/wijmo.vue2.barcode.composite': 'npm:@mescius/wijmo.vue2.barcode.composite/index.js',
'@mescius/wijmo.vue2.barcode.specialized': 'npm:@mescius/wijmo.vue2.barcode.specialized/index.js',
'bootstrap.css': 'npm:bootstrap/dist/css/bootstrap.min.css',
'jszip': 'npm:jszip/dist/jszip.js',
'css': 'npm:systemjs-plugin-css/css.js',
'vue': 'npm:vue/dist/vue.cjs.js',
'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js',
'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js',
'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js',
'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js',
'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js',
'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js',
'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js',
'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js',
'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js',
'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js',
'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js',
'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js',
'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js',
'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js',
'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js',
'@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js',
'@vue/shared':'npm:@vue/shared/dist/shared.cjs.js',
'vue-loader': 'npm:systemjs-vue-browser/index.js',
//'systemjs-plugin-vue': 'npm:systemjs-plugin-vue/index.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'
},
rxjs: {
defaultExtension: 'js'
},
"node_modules": {
defaultExtension: 'js'
},
wijmo: {
defaultExtension: 'js',
}
}
});
})(this);
