import React from 'react';
import FileUploader from 'devextreme-react/file-uploader';
class App extends React.Component {
constructor(props) {
super(props);
this.state = { chunks: [] };
this.onUploadProgress = this.onUploadProgress.bind(this);
this.onUploadStarted = this.onUploadStarted.bind(this);
}
render() {
return (
<React.Fragment>
<FileUploader name="file" accept="image/*" uploadUrl="https://js.devexpress.com/Demos/WidgetsGalleryDataService/api/ChunkUpload"
chunkSize={200000} onUploadStarted={this.onUploadStarted} onProgress={this.onUploadProgress} />
<span className="note">Allowed file extensions: <span>.jpg, .jpeg, .gif, .png</span>.</span>
<span className="note">Maximum file size: <span>4 MB.</span></span>
<div className="chunk-panel">
{
this.state.chunks.map((c, i) => {
return <div key={i}>
<span>Chunk size:</span>
<span className="segment-size dx-theme-accent-as-text-color">{this.getValueInKb(c.segmentSize)}</span>
<span>, Uploaded:</span>
<span className="loaded-size dx-theme-accent-as-text-color">{this.getValueInKb(c.bytesLoaded)}</span>
<span>/</span>
<span className="total-size dx-theme-accent-as-text-color">{this.getValueInKb(c.bytesTotal)}</span>
</div>;
})
}
</div>
</React.Fragment>
);
}
onUploadProgress(e) {
const chunk = {
segmentSize: e.segmentSize,
bytesLoaded: e.bytesLoaded,
bytesTotal: e.bytesTotal
};
this.setState({ chunks: [...this.state.chunks, chunk] });
}
onUploadStarted() {
this.setState({ chunks: [] });
}
getValueInKb(value) {
return `${(value / 1024).toFixed(0)}kb`;
}
}
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>
.chunk-panel {
width: 505px;
height: 165px;
overflow-y: auto;
padding: 18px;
margin-top: 40px;
background-color: rgba(191, 191, 191, 0.15);
}
.segment-size,
.loaded-size {
margin-left: 3px;
}
.note {
display: block;
font-size: 10pt;
color: #484848;
margin-left: 9px;
}
.note > span {
font-weight: 700
}
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@1.25.0/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
}
});