import React from 'react';
import DropDownBox from 'devextreme-react/drop-down-box';
import TreeView from 'devextreme-react/tree-view';
import DataGrid, { Selection, Paging, FilterRow, Scrolling } from 'devextreme-react/data-grid';
import CustomStore from 'devextreme/data/custom_store';
import 'whatwg-fetch';
const gridColumns = ['CompanyName', 'City', 'Phone'];
class App extends React.Component {
constructor(props) {
super(props);
this.treeView = null;
this.treeDataSource = this.makeAsyncDataSource('treeProducts.json');
this.gridDataSource = this.makeAsyncDataSource('customers.json');
this.state = {
treeBoxValue: '1_1',
gridBoxValue: [3]
};
this.treeView_itemSelectionChanged = this.treeView_itemSelectionChanged.bind(this);
this.syncTreeViewSelection = this.syncTreeViewSelection.bind(this);
this.syncDataGridSelection = this.syncDataGridSelection.bind(this);
this.dataGrid_onSelectionChanged = this.dataGrid_onSelectionChanged.bind(this);
this.treeViewRender = this.treeViewRender.bind(this);
this.treeView_onContentReady = this.treeView_onContentReady.bind(this);
this.dataGridRender = this.dataGridRender.bind(this);
}
makeAsyncDataSource(jsonFile) {
return new CustomStore({
loadMode: 'raw',
key: 'ID',
load: function() {
return fetch(`../../../../data/${ jsonFile}`)
.then(response => response.json());
}
});
}
render() {
return (
<div className="dx-fieldset">
<div className="dx-field">
<div className="dx-field-label">DropDownBox with embedded TreeView</div>
<div className="dx-field-value">
<DropDownBox
value={this.state.treeBoxValue}
valueExpr="ID"
displayExpr="name"
placeholder="Select a value..."
showClearButton={true}
dataSource={this.treeDataSource}
onValueChanged={this.syncTreeViewSelection}
contentRender={this.treeViewRender}
/>
</div>
</div>
<div className="dx-field">
<div className="dx-field-label">DropDownBox with embedded DataGrid</div>
<div className="dx-field-value">
<DropDownBox
value={this.state.gridBoxValue}
valueExpr="ID"
deferRendering={false}
displayExpr={this.gridBox_displayExpr}
placeholder="Select a value..."
showClearButton={true}
dataSource={this.gridDataSource}
onValueChanged={this.syncDataGridSelection}
contentRender={this.dataGridRender}
/>
</div>
</div>
</div>
);
}
treeViewRender() {
return (
<TreeView dataSource={this.treeDataSource}
ref={(ref) => this.treeView = ref}
dataStructure="plain"
keyExpr="ID"
parentIdExpr="categoryId"
selectionMode="single"
displayExpr="name"
selectByClick={true}
onContentReady={this.treeView_onContentReady}
onItemSelectionChanged={this.treeView_itemSelectionChanged}
/>
);
}
dataGridRender() {
return (
<DataGrid
dataSource={this.gridDataSource}
columns={gridColumns}
hoverStateEnabled={true}
selectedRowKeys={this.state.gridBoxValue}
onSelectionChanged={this.dataGrid_onSelectionChanged}
height="100%">
<Selection mode="single" />
<Scrolling mode="infinite" />
<Paging enabled={true} pageSize={10} />
<FilterRow visible={true} />
</DataGrid>
);
}
syncTreeViewSelection(e) {
this.setState({
treeBoxValue: e.value
});
if (!this.treeView) return;
if (!e.value) {
this.treeView.instance.unselectAll();
} else {
this.treeView.instance.selectItem(e.value);
}
}
syncDataGridSelection(e) {
this.setState({
gridBoxValue: e.value
});
}
treeView_itemSelectionChanged(e) {
this.setState({
treeBoxValue: e.component.getSelectedNodeKeys()
});
}
dataGrid_onSelectionChanged(e) {
this.setState({
gridBoxValue: e.selectedRowKeys
});
}
gridBox_displayExpr(item) {
return item && `${item.CompanyName } <${ item.Phone }>`;
}
treeView_onContentReady(e) {
e.component.selectItem(this.state.treeBoxValue);
}
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(
<App />,
document.getElementById('app')
);
<!DOCTYPE html>
<html>
<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/20.2.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.4.1/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.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
.dx-fieldset {
height: 500px;
}
System.config({
transpiler: 'plugin-babel',
meta: {
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16.14.0/umd/react.development.js',
'react-dom': 'npm:react-dom@16.14.0/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.7.2/prop-types.js',
'whatwg-fetch': 'npm:whatwg-fetch@2.0.4/fetch.js',
'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@20.2.5',
'devextreme-react': 'npm:devextreme-react@20.2.5',
'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.9.8/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.11/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.18/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.11/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.11/hooks/dist/hooks.js',
// SystemJS plugins
'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'
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});