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Backend API
<template>
<div class="dx-fieldset">
<div class="dx-field">
<div class="dx-field-label">DropDownBox with embedded TreeView</div>
<div class="dx-field-value">
<DxDropDownBox
v-model:value="treeBoxValue"
:show-clear-button="true"
:input-attr="{ 'aria-label': 'Owner' }"
:data-source="treeDataSource"
value-expr="ID"
display-expr="name"
placeholder="Select a value..."
@value-changed="syncTreeViewSelection()"
>
<template #content="{ data }">
<DxTreeView
:data-source="treeDataSource"
:select-by-click="true"
:select-nodes-recursive="false"
data-structure="plain"
key-expr="ID"
parent-id-expr="categoryId"
selection-mode="multiple"
show-check-boxes-mode="normal"
display-expr="name"
@content-ready="treeViewContentReady($event)"
@item-selection-changed="treeViewItemSelectionChanged($event)"
/>
</template>
</DxDropDownBox>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label">DropDownBox with embedded DataGrid</div>
<div class="dx-field-value">
<DxDropDownBox
v-model:value="gridBoxValue"
:input-attr="{ 'aria-label': 'Owner' }"
:defer-rendering="false"
:show-clear-button="true"
:data-source="gridDataSource"
display-expr="CompanyName"
value-expr="ID"
placeholder="Select a value..."
>
<template #content="{ data }">
<DxDataGrid
:height="345"
:data-source="gridDataSource"
:columns="gridColumns"
:hover-state-enabled="true"
v-model:selected-row-keys="gridBoxValue"
>
<DxSelection mode="multiple"/>
<DxPaging
:enabled="true"
:page-size="10"
/>
<DxFilterRow :visible="true"/>
<DxScrolling mode="virtual"/>
</DxDataGrid>
</template>
</DxDropDownBox>
</div>
</div>
</div>
</template>
<script setup lang="ts">
import { ref } from 'vue';
import DxDropDownBox from 'devextreme-vue/drop-down-box';
import DxTreeView from 'devextreme-vue/tree-view';
import {
DxDataGrid, DxSelection, DxPaging, DxFilterRow, DxScrolling,
} from 'devextreme-vue/data-grid';
import CustomStore from 'devextreme/data/custom_store';
import 'whatwg-fetch';
const treeBoxValue = ref(['1_1']);
const gridBoxValue = ref([3]);
const treeDataSource = makeAsyncDataSource('treeProducts.json');
const gridDataSource = makeAsyncDataSource('customers.json');
const gridColumns = ref(['CompanyName', 'City', 'Phone']);
let treeView = null;
function treeViewContentReady({ component }) {
treeView = component;
syncTreeViewSelection();
}
function makeAsyncDataSource(jsonFile) {
return new CustomStore({
loadMode: 'raw',
key: 'ID',
load() {
return fetch(`../../../../data/${jsonFile}`)
.then((response) => response.json());
},
});
}
function syncTreeViewSelection() {
const value = treeBoxValue.value;
if (treeView) {
if (value === null) {
treeView.unselectAll();
} else {
value?.forEach((val) => {
treeView.selectItem(val);
});
}
}
}
function treeViewItemSelectionChanged(e) {
treeBoxValue.value = e.component.getSelectedNodeKeys();
}
</script>
<style scoped>
.dx-fieldset {
height: 500px;
}
</style>
window.exports = window.exports || {};
window.config = {
transpiler: 'plugin-babel',
meta: {
'*.vue': {
loader: 'vue-loader',
},
'*.ts': {
loader: 'demo-ts-loader',
},
'*.svg': {
loader: 'svg-loader',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
},
paths: {
'root:': '../../../../',
'npm:': 'https://unpkg.com/',
},
map: {
'vue': 'npm:vue@3.2.47/dist/vue.esm-browser.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.1.1/index.js',
'demo-ts-loader': 'root:utils/demo-ts-loader.js',
'svg-loader': 'root:utils/svg-loader.js',
'whatwg-fetch': 'npm:whatwg-fetch@2.0.4/fetch.js',
'mitt': 'npm:mitt/dist/mitt.umd.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@24.1.6/cjs',
'devextreme-vue': 'npm:devextreme-vue@24.1.6/cjs',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.11/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'devextreme-vue': {
main: 'index.js',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.13/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
},
};
System.config(window.config);
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#app');
<!DOCTYPE html>
<html lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.6/css/dx.light.css" />
<script type="module">
import * as vueCompilerSFC from "https://unpkg.com/@vue/compiler-sfc@3.4.16/dist/compiler-sfc.esm-browser.js";
window.vueCompilerSFC = vueCompilerSFC;
</script>
<script src="https://unpkg.com/typescript@4.9.5/lib/typescript.js"></script>
<script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import("./index.ts");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"> </div>
</div>
</body>
</html>
[{
"ID": 1,
"CompanyName": "Premier Buy",
"Address": "7601 Penn Avenue South",
"City": "Richfield",
"State": "Minnesota",
"Zipcode": 55423,
"Phone": "(612) 291-1000",
"Fax": "(612) 291-2001",
"Website": "http://www.nowebsitepremierbuy.dx"
}, {
"ID": 2,
"CompanyName": "ElectrixMax",
"Address": "263 Shuman Blvd",
"City": "Naperville",
"State": "Illinois",
"Zipcode": 60563,
"Phone": "(630) 438-7800",
"Fax": "(630) 438-7801",
"Website": "http://www.nowebsiteelectrixmax.dx"
}, {
"ID": 3,
"CompanyName": "Video Emporium",
"Address": "1201 Elm Street",
"City": "Dallas",
"State": "Texas",
"Zipcode": 75270,
"Phone": "(214) 854-3000",
"Fax": "(214) 854-3001",
"Website": "http://www.nowebsitevideoemporium.dx"
}, {
"ID": 4,
"CompanyName": "Screen Shop",
"Address": "1000 Lowes Blvd",
"City": "Mooresville",
"State": "North Carolina",
"Zipcode": 28117,
"Phone": "(800) 445-6937",
"Fax": "(800) 445-6938",
"Website": "http://www.nowebsitescreenshop.dx"
}, {
"ID": 5,
"CompanyName": "Braeburn",
"Address": "1 Infinite Loop",
"City": "Cupertino",
"State": "California",
"Zipcode": 95014,
"Phone": "(408) 996-1010",
"Fax": "(408) 996-1012",
"Website": "http://www.nowebsitebraeburn.dx"
}, {
"ID": 6,
"CompanyName": "PriceCo",
"Address": "30 Hunter Lane",
"City": "Camp Hill",
"State": "Pennsylvania",
"Zipcode": 17011,
"Phone": "(717) 761-2633",
"Fax": "(717) 761-2334",
"Website": "http://www.nowebsitepriceco.dx"
}, {
"ID": 7,
"CompanyName": "Ultimate Gadget",
"Address": "1557 Watson Blvd",
"City": "Warner Robbins",
"State": "Georgia",
"Zipcode": 31093,
"Phone": "(995) 623-6785",
"Fax": "(995) 623-6786",
"Website": "http://www.nowebsiteultimategadget.dx"
}, {
"ID": 8,
"CompanyName": "EZ Stop",
"Address": "618 Michillinda Ave.",
"City": "Arcadia",
"State": "California",
"Zipcode": 91007,
"Phone": "(626) 265-8632",
"Fax": "(626) 265-8633",
"Website": "http://www.nowebsiteezstop.dx"
}, {
"ID": 9,
"CompanyName": "Clicker",
"Address": "1100 W. Artesia Blvd.",
"City": "Compton",
"State": "California",
"Zipcode": 90220,
"Phone": "(310) 884-9000",
"Fax": "(310) 884-9001",
"Website": "http://www.nowebsiteclicker.dx"
}, {
"ID": 10,
"CompanyName": "Store of America",
"Address": "2401 Utah Ave. South",
"City": "Seattle",
"State": "Washington",
"Zipcode": 98134,
"Phone": "(206) 447-1575",
"Fax": "(206) 447-1576",
"Website": "http://www.nowebsiteamerica.dx"
}, {
"ID": 11,
"CompanyName": "Zone Toys",
"Address": "1945 S Cienega Boulevard",
"City": "Los Angeles",
"State": "California",
"Zipcode": 90034,
"Phone": "(310) 237-5642",
"Fax": "(310) 237-5643",
"Website": "http://www.nowebsitezonetoys.dx"
}, {
"ID": 12,
"CompanyName": "ACME",
"Address": "2525 E El Segundo Blvd",
"City": "El Segundo",
"State": "California",
"Zipcode": 90245,
"Phone": "(310) 536-0611",
"Fax": "(310) 536-0612",
"Website": "http://www.nowebsiteacme.dx"
}]
[
{
"ID": 1,
"name": "Stores",
"expanded": true
},
{
"ID": "1_1",
"categoryId": 1,
"name": "Super Mart of the West",
"expanded": true
},
{
"ID": "1_1_1",
"categoryId": "1_1",
"name": "Video Players"
},
{
"ID": "1_1_1_1",
"categoryId": "1_1_1",
"name": "HD Video Player",
"price": 220
},
{
"ID": "1_1_1_2",
"categoryId": "1_1_1",
"name": "SuperHD Video Player",
"price": 270
},
{
"ID": "1_1_2",
"categoryId": "1_1",
"name": "Televisions",
"expanded": true
},
{
"ID": "1_1_2_1",
"categoryId": "1_1_2",
"name": "SuperLCD 42",
"price": 1200
},
{
"ID": "1_1_2_2",
"categoryId": "1_1_2",
"name": "SuperLED 42",
"price": 1450
},
{
"ID": "1_1_2_3",
"categoryId": "1_1_2",
"name": "SuperLED 50",
"price": 1600
},
{
"ID": "1_1_2_4",
"categoryId": "1_1_2",
"name": "SuperLCD 55",
"price": 1750
},
{
"ID": "1_1_2_5",
"categoryId": "1_1_2",
"name": "SuperLCD 70",
"price": 4000
},
{
"ID": "1_1_3",
"categoryId": "1_1",
"name": "Monitors"
},
{
"ID": "1_1_3_1",
"categoryId": "1_1_3",
"name": "19\""
},
{
"ID": "1_1_3_1_1",
"categoryId": "1_1_3_1",
"name": "DesktopLCD 19",
"price": 160
},
{
"ID": "1_1_4",
"categoryId": "1_1",
"name": "Projectors"
},
{
"ID": "1_1_4_1",
"categoryId": "1_1_4",
"name": "Projector Plus",
"price": 550
},
{
"ID": "1_1_4_2",
"categoryId": "1_1_4",
"name": "Projector PlusHD",
"price": 750
}
]
This demo uses the DataGrid's selection.mode and TreeView's selectionMode properties to enable multiple selection.