import React from 'react';
import { DataGrid, Column, Editing, Scrolling, Lookup, Summary, TotalItem } from 'devextreme-react/data-grid';
import { Button } from 'devextreme-react/button';
import { SelectBox } from 'devextreme-react/select-box';
import CustomStore from 'devextreme/data/custom_store';
import { formatDate } from 'devextreme/localization';
import 'whatwg-fetch';
const URL = 'https://js.devexpress.com/Demos/Mvc/api/DataGridWebApi';
const REFRESH_MODES = ['full', 'reshape', 'repaint'];
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
ordersData: new CustomStore({
key: 'OrderID',
load: () => this.sendRequest(`${URL}/Orders`),
insert: (values) => this.sendRequest(`${URL}/InsertOrder`, 'POST', {
values: JSON.stringify(values)
}),
update: (key, values) => this.sendRequest(`${URL}/UpdateOrder`, 'PUT', {
key: key,
values: JSON.stringify(values)
}),
remove: (key) => this.sendRequest(`${URL}/DeleteOrder`, 'DELETE', {
key: key
})
}),
customersData: new CustomStore({
key: 'Value',
loadMode: 'raw',
load: () => this.sendRequest(`${URL}/CustomersLookup`)
}),
shippersData: new CustomStore({
key: 'Value',
loadMode: 'raw',
load: () => this.sendRequest(`${URL}/ShippersLookup`)
}),
requests: [],
refreshMode: 'reshape'
};
this.clearRequests = this.clearRequests.bind(this);
this.handleRefreshModeChange = this.handleRefreshModeChange.bind(this);
}
sendRequest(url, method, data) {
method = method || 'GET';
data = data || {};
this.logRequest(method, url, data);
if(method === 'GET') {
return fetch(url, {
method: method,
credentials: 'include'
}).then(result => result.json().then(json => {
if(result.ok) return json.data;
throw json.Message;
}));
}
const params = Object.keys(data).map((key) => {
return `${encodeURIComponent(key) }=${ encodeURIComponent(data[key])}`;
}).join('&');
return fetch(url, {
method: method,
body: params,
headers: {
'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8'
},
credentials: 'include'
}).then(result => {
if(result.ok) {
return result.text().then(text => text && JSON.parse(text));
} else {
return result.json().then(json => {
throw json.Message;
});
}
});
}
logRequest(method, url, data) {
const args = Object.keys(data || {}).map(function(key) {
return `${key }=${ data[key]}`;
}).join(' ');
const time = formatDate(new Date(), 'HH:mm:ss');
const request = [time, method, url.slice(URL.length), args].join(' ');
this.setState((state) => {
return { requests: [request].concat(state.requests) };
});
}
clearRequests() {
this.setState({ requests: [] });
}
handleRefreshModeChange(e) {
this.setState({ refreshMode: e.value });
}
render() {
const { refreshMode, ordersData, customersData, shippersData } = this.state;
return (
<React.Fragment>
<DataGrid
id="grid"
showBorders={true}
dataSource={ordersData}
repaintChangesOnly={true}
>
<Editing
refreshMode={refreshMode}
mode="cell"
allowAdding={true}
allowDeleting={true}
allowUpdating={true}
/>
<Scrolling
mode="virtual"
/>
<Column dataField="CustomerID" caption="Customer">
<Lookup dataSource={customersData} valueExpr="Value" displayExpr="Text" />
</Column>
<Column dataField="OrderDate" dataType="date">
</Column>
<Column dataField="Freight">
</Column>
<Column dataField="ShipCountry">
</Column>
<Column
dataField="ShipVia"
caption="Shipping Company"
dataType="number"
>
<Lookup dataSource={shippersData} valueExpr="Value" displayExpr="Text" />
</Column>
<Summary>
<TotalItem column="CustomerID" summaryType="count" />
<TotalItem column="Freight" summaryType="sum" valueFormat="#0.00" />
</Summary>
</DataGrid>
<div className="options">
<div className="caption">Options</div>
<div className="option">
<span>Refresh Mode: </span>
<SelectBox
value={refreshMode}
items={REFRESH_MODES}
onValueChanged={this.handleRefreshModeChange}
/>
</div>
<div id="requests">
<div>
<div className="caption">Network Requests</div>
<Button id="clear" text="Clear" onClick={this.clearRequests} />
</div>
<ul>
{this.state.requests.map((request, index) => <li key={index}>{request}</li>)}
</ul>
</div>
</div>
</React.Fragment>
);
}
}
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>
#grid {
height: 440px;
}
.options {
padding: 20px;
margin-top: 20px;
background-color: rgba(191, 191, 191, 0.15);
}
.caption {
margin-bottom: 10px;
font-weight: 500;
font-size: 18px;
}
.option {
margin-bottom: 10px;
}
.option > span {
position: relative;
top: 2px;
margin-right: 10px;
}
.option > .dx-widget {
display: inline-block;
vertical-align: middle;
}
#requests .caption {
float: left;
padding-top: 7px;
}
#requests > div {
padding-bottom: 5px;
}
#requests > div:after {
content: "";
display: table;
clear: both;
}
#requests #clear {
float: right;
}
#requests ul {
list-style: none;
max-height: 100px;
overflow: auto;
margin: 0;
}
#requests ul li {
padding: 7px 0;
border-bottom: 1px solid #dddddd;
}
#requests ul li:last-child {
border-bottom: none;
}
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
}
});