import React from 'react';
import FileUploader from 'devextreme-react/file-uploader';
import { LoadPanel } from 'devextreme-react/load-panel';
const endpointUrl = 'https://js.devexpress.com/Demos/Mvc/api/file-manager-azure-access';
const loadPanelPosition = { of: '#file-uploader' };
class App extends React.Component {
constructor() {
super();
this.state = {
requests: [],
loadPanelVisible: true,
wrapperClassName: ''
};
this.onRequestExecuted = this.onRequestExecuted.bind(this);
gateway = new AzureGateway(endpointUrl, this.onRequestExecuted);
this.checkAzureStatus();
}
render() {
return (
<div id="wrapper" className={this.state.wrapperClassName}>
<LoadPanel visible={this.state.loadPanelVisible} position={loadPanelPosition} />
<div id="widget-area">
<FileUploader id="file-uploader" chunkSize={200000} maxFileSize={1048576} uploadChunk={this.uploadChunk} />
<div id="request-panel">
{
this.state.requests.map((r, i) => {
return <div key={i} className="request-info">
<div className="parameter-info">
<div className="parameter-name">Method:</div>
<div className="parameter-value dx-theme-accent-as-text-color">{r.method}</div>
</div>
<div className="parameter-info">
<div className="parameter-name">Url path:</div>
<div className="parameter-value dx-theme-accent-as-text-color">{r.urlPath}</div>
</div>
<div className="parameter-info">
<div className="parameter-name">Query string:</div>
<div className="parameter-value dx-theme-accent-as-text-color">{r.queryString}</div>
</div>
<br />
</div>;
})
}
</div>
</div>
<div id="message-box">
To run the demo locally, specify your Azure storage account name, access key and container name in the web.config file.
Refer to the <a href="https://js.devexpress.com/Demos/WidgetsGallery/Demo/FileUploader/AzureDirectUploading/React/Light/"
target="_blank" rel="noopener noreferrer">
https://js.devexpress.com/Demos/WidgetsGallery/Demo/FileUploader/AzureDirectUploading/React/Light/</a>
to see the demo online.
</div>
</div>
);
}
uploadChunk(file, uploadInfo) {
let promise = null;
if(uploadInfo.chunkIndex === 0) {
promise = gateway.getUploadAccessUrl(file.name).done(accessUrl => {
uploadInfo.customData.accessUrl = accessUrl;
});
} else {
promise = Promise.resolve();
}
promise = promise.then(() => gateway.putBlock(uploadInfo.customData.accessUrl, uploadInfo.chunkIndex, uploadInfo.chunkBlob));
if(uploadInfo.chunkIndex === uploadInfo.chunkCount - 1) {
promise = promise.then(() => gateway.putBlockList(uploadInfo.customData.accessUrl, uploadInfo.chunkCount));
}
return promise;
}
checkAzureStatus() {
fetch('https://js.devexpress.com/Demos/Mvc/api/file-manager-azure-status?widgetType=fileUploader')
.then(response => response.json())
.then(result => {
const className = result.active ? 'show-widget' : 'show-message';
this.setState({
wrapperClassName: className,
loadPanelVisible: false
});
});
}
onRequestExecuted({ method, urlPath, queryString }) {
const request = { method, urlPath, queryString };
this.setState({ requests: [request, ...this.state.requests] });
}
}
let gateway = null;
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/20.2.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx-gantt.min.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="../azure-file-system.js"></script>
<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>
#widget-area {
visibility: hidden;
}
#message-box {
display: none;
}
.show-widget #widget-area {
visibility: visible;
}
.show-message #widget-area {
display: none;
}
.show-message #message-box {
display: block;
}
#request-panel {
min-width: 505px;
height: 400px;
overflow-x: hidden;
overflow-y: auto;
padding: 18px;
margin-top: 40px;
background-color: rgba(191, 191, 191, 0.15);
}
#request-panel .parameter-info {
display: flex;
}
.request-info .parameter-name {
flex: 0 0 100px;
}
.request-info .parameter-name,
.request-info .parameter-value {
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
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',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.26.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.6',
'devextreme-react': 'npm:devextreme-react@20.2.6',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.10.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.18/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.24/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.13/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.13/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
}
});