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Backend API
import React, { useCallback, useRef } from 'react';
import FileManager, {
Permissions, Toolbar, ContextMenu, Item, FileSelectionItem, ItemView, Details, Column, FileManagerRef
} from 'devextreme-react/file-manager';
import { fileItems, getItemInfo } from './data.ts';
export default function App() {
const fileManagerRef = useRef<FileManagerRef>(null);
const createFile = useCallback((
fileExtension,
directory = fileManagerRef.current.instance().getCurrentDirectory(),
) => {
const newItem = {
__KEY__: Date.now(),
name: `New file${fileExtension}`,
isDirectory: false,
size: 0,
};
if (!directory.isDirectory) {
return false;
}
let array = null;
if (!directory.dataItem) {
array = fileItems;
} else {
array = directory.dataItem.items;
if (!array) {
array = [];
directory.dataItem.items = array;
}
}
array.push(newItem);
return true;
}, []);
const updateCategory = useCallback((newCategory, directory, viewArea: string) => {
let items = null;
if (viewArea === 'navPane') {
items = [directory];
} else {
items = fileManagerRef.current.instance().getSelectedItems();
}
items.forEach((item: { dataItem: { category: any; }; }) => {
if (item.dataItem) {
item.dataItem.category = newCategory;
}
});
return items.length > 0;
}, []);
const onItemClick = useCallback(({ itemData, viewArea, fileSystemItem }) => {
let updated = false;
const { extension, category } = getItemInfo(itemData.text);
if (extension) {
updated = createFile(extension, fileSystemItem);
} else if (category !== undefined) {
updated = updateCategory(category, fileSystemItem, viewArea);
}
if (updated) {
fileManagerRef.current.instance().refresh();
}
}, [createFile, updateCategory]);
const getNewFileMenuOptions = useCallback(() => ({
items: [
{
text: 'Create new file',
icon: 'plus',
items: [
{
text: 'Text Document',
extension: '.txt',
},
{
text: 'RTF Document',
extension: '.rtf',
},
{
text: 'Spreadsheet',
extension: '.xls',
},
],
},
],
onItemClick,
}), [onItemClick]);
const getChangeCategoryMenuOptions = useCallback(() => ({
items: [
{
text: 'Category',
icon: 'tags',
items: [
{
text: 'Work',
category: 'Work',
},
{
text: 'Important',
category: 'Important',
},
{
text: 'Home',
category: 'Home',
},
{
text: 'None',
category: '',
},
],
},
],
onItemClick,
}), [onItemClick]);
return (
<FileManager
ref={fileManagerRef}
fileSystemProvider={fileItems}
onContextMenuItemClick={onItemClick}
height={450}>
<Permissions
create={true}
delete={true}
rename={true}
download={true}>
</Permissions>
<ItemView showParentFolder={false}>
<Details>
<Column dataField="thumbnail"></Column>
<Column dataField="name"></Column>
<Column dataField="category" caption="Category" width="95"></Column>
<Column dataField="dateModified"></Column>
<Column dataField="size"></Column>
</Details>
</ItemView>
<Toolbar>
<Item name="showNavPane" visible={true} />
<Item name="separator" />
<Item name="create" />
<Item widget="dxMenu" location="before" options={getNewFileMenuOptions()} />
<Item name="refresh" />
<Item name="separator" location="after" />
<Item name="switchView" />
<FileSelectionItem name="rename" />
<FileSelectionItem name="separator" />
<FileSelectionItem name="delete" />
<FileSelectionItem name="separator" />
<FileSelectionItem widget="dxMenu" location="before" options={getChangeCategoryMenuOptions()} />
<FileSelectionItem name="refresh" />
<FileSelectionItem name="clearSelection" />
</Toolbar>
<ContextMenu>
<Item name="create" />
<Item text="Create new file" icon="plus">
<Item text="Text Document" />
<Item text="RTF Document" />
<Item text="Spreadsheet" />
</Item>
<Item name="rename" beginGroup />
<Item name="delete" />
<Item text="Category" icon="tags" beginGroup>
<Item text="Work" />
<Item text="Important" />
<Item text="Home" />
<Item text="None" />
</Item>
<Item name="refresh" />
</ContextMenu>
</FileManager>
);
}
import React, { useCallback, useRef } from 'react';
import FileManager, {
Permissions,
Toolbar,
ContextMenu,
Item,
FileSelectionItem,
ItemView,
Details,
Column,
} from 'devextreme-react/file-manager';
import { fileItems, getItemInfo } from './data.js';
export default function App() {
const fileManagerRef = useRef(null);
const createFile = useCallback((fileExtension, directory = fileManagerRef.current
.instance()
.getCurrentDirectory()) => {
const newItem = {
__KEY__: Date.now(),
name: `New file${fileExtension}`,
isDirectory: false,
size: 0,
};
if (!directory.isDirectory) {
return false;
}
let array = null;
if (!directory.dataItem) {
array = fileItems;
} else {
array = directory.dataItem.items;
if (!array) {
array = [];
directory.dataItem.items = array;
}
}
array.push(newItem);
return true;
}, []);
const updateCategory = useCallback((newCategory, directory, viewArea) => {
let items = null;
if (viewArea === 'navPane') {
items = [directory];
} else {
items = fileManagerRef.current.instance().getSelectedItems();
}
items.forEach((item) => {
if (item.dataItem) {
item.dataItem.category = newCategory;
}
});
return items.length > 0;
}, []);
const onItemClick = useCallback(
({ itemData, viewArea, fileSystemItem }) => {
let updated = false;
const { extension, category } = getItemInfo(itemData.text);
if (extension) {
updated = createFile(extension, fileSystemItem);
} else if (category !== undefined) {
updated = updateCategory(category, fileSystemItem, viewArea);
}
if (updated) {
fileManagerRef.current.instance().refresh();
}
},
[createFile, updateCategory],
);
const getNewFileMenuOptions = useCallback(
() => ({
items: [
{
text: 'Create new file',
icon: 'plus',
items: [
{
text: 'Text Document',
extension: '.txt',
},
{
text: 'RTF Document',
extension: '.rtf',
},
{
text: 'Spreadsheet',
extension: '.xls',
},
],
},
],
onItemClick,
}),
[onItemClick],
);
const getChangeCategoryMenuOptions = useCallback(
() => ({
items: [
{
text: 'Category',
icon: 'tags',
items: [
{
text: 'Work',
category: 'Work',
},
{
text: 'Important',
category: 'Important',
},
{
text: 'Home',
category: 'Home',
},
{
text: 'None',
category: '',
},
],
},
],
onItemClick,
}),
[onItemClick],
);
return (
<FileManager
ref={fileManagerRef}
fileSystemProvider={fileItems}
onContextMenuItemClick={onItemClick}
height={450}
>
<Permissions
create={true}
delete={true}
rename={true}
download={true}
></Permissions>
<ItemView showParentFolder={false}>
<Details>
<Column dataField="thumbnail"></Column>
<Column dataField="name"></Column>
<Column
dataField="category"
caption="Category"
width="95"
></Column>
<Column dataField="dateModified"></Column>
<Column dataField="size"></Column>
</Details>
</ItemView>
<Toolbar>
<Item
name="showNavPane"
visible={true}
/>
<Item name="separator" />
<Item name="create" />
<Item
widget="dxMenu"
location="before"
options={getNewFileMenuOptions()}
/>
<Item name="refresh" />
<Item
name="separator"
location="after"
/>
<Item name="switchView" />
<FileSelectionItem name="rename" />
<FileSelectionItem name="separator" />
<FileSelectionItem name="delete" />
<FileSelectionItem name="separator" />
<FileSelectionItem
widget="dxMenu"
location="before"
options={getChangeCategoryMenuOptions()}
/>
<FileSelectionItem name="refresh" />
<FileSelectionItem name="clearSelection" />
</Toolbar>
<ContextMenu>
<Item name="create" />
<Item
text="Create new file"
icon="plus"
>
<Item text="Text Document" />
<Item text="RTF Document" />
<Item text="Spreadsheet" />
</Item>
<Item
name="rename"
beginGroup
/>
<Item name="delete" />
<Item
text="Category"
icon="tags"
beginGroup
>
<Item text="Work" />
<Item text="Important" />
<Item text="Home" />
<Item text="None" />
</Item>
<Item name="refresh" />
</ContextMenu>
</FileManager>
);
}
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
export const fileItems = [{
name: 'Documents',
isDirectory: true,
category: 'Work',
items: [{
name: 'Projects',
isDirectory: true,
category: 'Work',
items: [{
name: 'About.rtf',
isDirectory: false,
size: 1024,
}, {
name: 'Passwords.rtf',
isDirectory: false,
category: 'Important',
size: 2048,
}],
}, {
name: 'About.xml',
isDirectory: false,
size: 1024,
}, {
name: 'Managers.rtf',
isDirectory: false,
size: 2048,
}, {
name: 'ToDo.txt',
isDirectory: false,
size: 3072,
}],
}, {
name: 'Images',
isDirectory: true,
category: 'Home',
items: [{
name: 'logo.png',
isDirectory: false,
size: 20480,
}, {
name: 'banner.gif',
isDirectory: false,
size: 10240,
}],
}, {
name: 'System',
isDirectory: true,
category: 'Important',
items: [{
name: 'Employees.txt',
isDirectory: false,
category: 'Important',
size: 3072,
}, {
name: 'PasswordList.txt',
isDirectory: false,
category: 'Important',
size: 5120,
}],
}, {
name: 'Description.rtf',
isDirectory: false,
size: 1024,
}, {
name: 'Description.txt',
isDirectory: false,
size: 2048,
}];
const fileExtensions = {
'Text Document': '.txt',
'RTF Document': '.rtf',
Spreadsheet: '.xls',
};
const categories = ['Work', 'Important', 'Home', 'None'];
export function getItemInfo(name: string) {
const extension = fileExtensions[name];
const category = extension ?? categories.find((cat) => cat === name);
return {
extension,
category,
};
}
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
jsx: 'react',
},
meta: {
'react': {
'esModule': true,
},
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
defaultExtension: 'js',
map: {
'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'react': 'npm:react@17.0.2/umd/react.development.js',
'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.8.1/prop-types.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@24.1.7/cjs',
'devextreme-react': 'npm:devextreme-react@24.1.7/cjs',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.12/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3',
// 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',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'devextreme': {
defaultExtension: 'js',
},
'devextreme-react': {
main: 'index.js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/localization/messages': {
format: 'json',
defaultExtension: 'json',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.13/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
export const fileItems = [
{
name: 'Documents',
isDirectory: true,
category: 'Work',
items: [
{
name: 'Projects',
isDirectory: true,
category: 'Work',
items: [
{
name: 'About.rtf',
isDirectory: false,
size: 1024,
},
{
name: 'Passwords.rtf',
isDirectory: false,
category: 'Important',
size: 2048,
},
],
},
{
name: 'About.xml',
isDirectory: false,
size: 1024,
},
{
name: 'Managers.rtf',
isDirectory: false,
size: 2048,
},
{
name: 'ToDo.txt',
isDirectory: false,
size: 3072,
},
],
},
{
name: 'Images',
isDirectory: true,
category: 'Home',
items: [
{
name: 'logo.png',
isDirectory: false,
size: 20480,
},
{
name: 'banner.gif',
isDirectory: false,
size: 10240,
},
],
},
{
name: 'System',
isDirectory: true,
category: 'Important',
items: [
{
name: 'Employees.txt',
isDirectory: false,
category: 'Important',
size: 3072,
},
{
name: 'PasswordList.txt',
isDirectory: false,
category: 'Important',
size: 5120,
},
],
},
{
name: 'Description.rtf',
isDirectory: false,
size: 1024,
},
{
name: 'Description.txt',
isDirectory: false,
size: 2048,
},
];
const fileExtensions = {
'Text Document': '.txt',
'RTF Document': '.rtf',
Spreadsheet: '.xls',
};
const categories = ['Work', 'Important', 'Home', 'None'];
export function getItemInfo(name) {
const extension = fileExtensions[name];
const category = extension ?? categories.find((cat) => cat === name);
return {
extension,
category,
};
}
<!DOCTYPE html>
<html lang="en">
<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=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.7/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.6.12/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.tsx");
</script>
<link rel="stylesheet" type="text/css" href="styles.css" />
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>