<div class="dx-fieldset">
<div class="dx-field">
<div class="dx-field-label">DropDownBox with embedded TreeView</div>
<div class="dx-field-value">
<dx-drop-down-box
[(value)]="treeBoxValue"
valueExpr="ID"
displayExpr="name"
placeholder="Select a value..."
[showClearButton]="true"
[dataSource]="treeDataSource"
(onValueChanged)="syncTreeViewSelection()"
>
<div *dxTemplate="let data of 'content'">
<dx-tree-view
[dataSource]="treeDataSource"
dataStructure="plain"
keyExpr="ID"
parentIdExpr="categoryId"
selectionMode="multiple"
showCheckBoxesMode="normal"
[selectNodesRecursive]="false"
displayExpr="name"
[selectByClick]="true"
(onContentReady)="syncTreeViewSelection($event)"
(onItemSelectionChanged)="treeView_itemSelectionChanged($event)"
>
</dx-tree-view>
</div>
</dx-drop-down-box>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label">DropDownBox with embedded DataGrid</div>
<div class="dx-field-value">
<dx-drop-down-box
[(value)]="gridBoxValue"
valueExpr="ID"
displayExpr="CompanyName"
placeholder="Select a value..."
[showClearButton]="true"
[dataSource]="gridDataSource"
>
<div *dxTemplate="let data of 'content'">
<dx-data-grid
[dataSource]="gridDataSource"
[columns]="['CompanyName', 'City', 'Phone']"
[selection]="{ mode: 'multiple' }"
[hoverStateEnabled]="true"
[paging]="{ enabled: true, pageSize: 10 }"
[filterRow]="{ visible: true }"
[scrolling]="{ mode: 'infinite' }"
[height]="345"
[(selectedRowKeys)]="gridBoxValue"
>
</dx-data-grid>
</div>
</dx-drop-down-box>
</div>
</div>
</div>
import { NgModule, Component, ViewChild, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { HttpClient, HttpClientModule } from '@angular/common/http';
import {
DxDropDownBoxModule,
DxTreeViewModule,
DxDataGridModule,
DxTreeViewComponent
} from 'devextreme-angular';
import CustomStore from 'devextreme/data/custom_store';
if(!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css']
})
export class AppComponent {
@ViewChild(DxTreeViewComponent, { static: false }) treeView;
treeDataSource: any;
treeBoxValue: string[];
gridDataSource: any;
gridBoxValue: number[] = [3];
constructor(http: HttpClient) {
this.treeDataSource = this.makeAsyncDataSource(http, "treeProducts.json");
this.gridDataSource = this.makeAsyncDataSource(http, "customers.json");
this.treeBoxValue = ["1_1"];
}
makeAsyncDataSource(http, jsonFile){
return new CustomStore({
loadMode: "raw",
key: "ID",
load: function() {
return http.get('../../../../data/' + jsonFile)
.toPromise();
}
});
};
syncTreeViewSelection(e) {
var component = (e && e.component) || (this.treeView && this.treeView.instance);
if (!component) return;
if (!this.treeBoxValue) {
component.unselectAll();
}
if (this.treeBoxValue) {
this.treeBoxValue.forEach((function (value) {
component.selectItem(value);
}).bind(this));
}
}
treeView_itemSelectionChanged(e){
this.treeBoxValue = e.component.getSelectedNodeKeys();
}
}
@NgModule({
imports: [
BrowserModule,
DxTreeViewModule,
DxDropDownBoxModule,
HttpClientModule,
DxDataGridModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
:host .dx-fieldset {
height: 500px;
}
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
System.config({
transpiler: 'ts',
typescriptOptions: {
module: "system",
emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
'typescript': {
"exports": "ts"
},
'devextreme/localization.js': {
"esModule": true
}
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@3.5.3/lib/typescript.js',
'@angular': 'npm:@angular',
'tslib': 'npm:tslib@2.0.3/tslib.js',
'rxjs': 'npm:rxjs@6.3.3',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.25.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.4',
'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.9.7/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.5',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.8',
'devextreme-angular': 'npm:devextreme-angular@20.2.4',
'preact': 'npm:preact@10.5.7/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.7/hooks/dist/hooks.js'
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
packageConfigPaths: [
"npm:@angular/*/package.json",
"npm:@angular/common/*/package.json",
"npm:rxjs/package.json",
"npm:rxjs/operators/package.json",
"npm:devextreme-angular/*/package.json",
"npm:devextreme-angular/ui/*/package.json",
"npm:devextreme-angular/package.json",
"npm:devexpress-diagram/package.json",
"npm:devexpress-gantt/package.json",
]
});
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<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=1.0"/>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.4/css/dx.common.css"/>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.4/css/dx.light.css"/>
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import('app').catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>