Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Thank you for the feedback!
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Backend API
import React, { useCallback, useState } from 'react';
import HtmlEditor, { Toolbar, Item } from 'devextreme-react/html-editor';
import ButtonGroup, { Item as ButtonItem } from 'devextreme-react/button-group';
import prettier from 'prettier/standalone';
import parserHtml from 'prettier/parser-html';
import { markup } from './data.ts';
import 'devextreme/ui/html_editor/converters/markdown';
const sizeValues = ['8pt', '10pt', '12pt', '14pt', '18pt', '24pt', '36pt'];
const fontValues = ['Arial', 'Courier New', 'Georgia', 'Impact', 'Lucida Console', 'Tahoma', 'Times New Roman', 'Verdana'];
const defaultSelectedItemKeys = ['Html'];
const fontSizeOptions = {
inputAttr: {
'aria-label': 'Font size',
},
};
const fontFamilyOptions = {
inputAttr: {
'aria-label': 'Font family',
},
};
export default function App() {
const [valueContent, setValueContent] = useState(markup);
const [editorValueType, setEditorValueType] = useState<'html' | 'markdown'>('html');
const valueChanged = useCallback((e: { value?: string; }) => {
setValueContent(e.value);
}, [setValueContent]);
const valueTypeChanged = useCallback((e: { addedItems: { text: string; }[]; }) => {
const newEditorValue = e.addedItems[0].text.toLowerCase() as 'html' | 'markdown';
setEditorValueType(newEditorValue);
}, [setEditorValueType]);
const prettierFormat = useCallback((text) => {
if (editorValueType === 'html') {
return prettier.format(text, {
parser: 'html',
plugins: [parserHtml],
});
}
return text;
}, [editorValueType]);
return (
<div className="widget-container">
<HtmlEditor
height={300}
defaultValue={valueContent}
valueType={editorValueType}
onValueChanged={valueChanged}
>
<Toolbar>
<Item name="undo" />
<Item name="redo" />
<Item name="separator" />
<Item
name="size"
acceptedValues={sizeValues}
options={fontSizeOptions}
/>
<Item
name="font"
acceptedValues={fontValues}
options={fontFamilyOptions}
/>
<Item name="separator" />
<Item name="bold" />
<Item name="italic" />
<Item name="strike" />
<Item name="underline" />
<Item name="separator" />
<Item name="alignLeft" />
<Item name="alignCenter" />
<Item name="alignRight" />
<Item name="alignJustify" />
<Item name="separator" />
<Item name="color" />
<Item name="background" />
</Toolbar>
</HtmlEditor>
<div className="options">
<ButtonGroup
onSelectionChanged={valueTypeChanged}
defaultSelectedItemKeys={defaultSelectedItemKeys}
>
<ButtonItem text="Html" />
<ButtonItem text="Markdown" />
</ButtonGroup>
<div className="value-content" tabIndex={0}>
{prettierFormat(valueContent)}
</div>
</div>
</div>
);
}
import React, { useCallback, useState } from 'react';
import HtmlEditor, { Toolbar, Item } from 'devextreme-react/html-editor';
import ButtonGroup, { Item as ButtonItem } from 'devextreme-react/button-group';
import prettier from 'prettier/standalone';
import parserHtml from 'prettier/parser-html';
import { markup } from './data.js';
import 'devextreme/ui/html_editor/converters/markdown';
const sizeValues = ['8pt', '10pt', '12pt', '14pt', '18pt', '24pt', '36pt'];
const fontValues = [
'Arial',
'Courier New',
'Georgia',
'Impact',
'Lucida Console',
'Tahoma',
'Times New Roman',
'Verdana',
];
const defaultSelectedItemKeys = ['Html'];
const fontSizeOptions = {
inputAttr: {
'aria-label': 'Font size',
},
};
const fontFamilyOptions = {
inputAttr: {
'aria-label': 'Font family',
},
};
export default function App() {
const [valueContent, setValueContent] = useState(markup);
const [editorValueType, setEditorValueType] = useState('html');
const valueChanged = useCallback(
(e) => {
setValueContent(e.value);
},
[setValueContent],
);
const valueTypeChanged = useCallback(
(e) => {
const newEditorValue = e.addedItems[0].text.toLowerCase();
setEditorValueType(newEditorValue);
},
[setEditorValueType],
);
const prettierFormat = useCallback(
(text) => {
if (editorValueType === 'html') {
return prettier.format(text, {
parser: 'html',
plugins: [parserHtml],
});
}
return text;
},
[editorValueType],
);
return (
<div className="widget-container">
<HtmlEditor
height={300}
defaultValue={valueContent}
valueType={editorValueType}
onValueChanged={valueChanged}
>
<Toolbar>
<Item name="undo" />
<Item name="redo" />
<Item name="separator" />
<Item
name="size"
acceptedValues={sizeValues}
options={fontSizeOptions}
/>
<Item
name="font"
acceptedValues={fontValues}
options={fontFamilyOptions}
/>
<Item name="separator" />
<Item name="bold" />
<Item name="italic" />
<Item name="strike" />
<Item name="underline" />
<Item name="separator" />
<Item name="alignLeft" />
<Item name="alignCenter" />
<Item name="alignRight" />
<Item name="alignJustify" />
<Item name="separator" />
<Item name="color" />
<Item name="background" />
</Toolbar>
</HtmlEditor>
<div className="options">
<ButtonGroup
onSelectionChanged={valueTypeChanged}
defaultSelectedItemKeys={defaultSelectedItemKeys}
>
<ButtonItem text="Html" />
<ButtonItem text="Markdown" />
</ButtonGroup>
<div
className="value-content"
tabIndex={0}
>
{prettierFormat(valueContent)}
</div>
</div>
</div>
);
}
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
export const markup = '<h2><img src="../../../../images/widgets/HtmlEditor.svg" alt="HtmlEditor"> Formatted Text Editor (HTML Editor)</h2><p><br></p><p>DevExtreme JavaScript HTML Editor is a client-side WYSIWYG text editor that allows its users to format textual and visual content and store it as HTML or Markdown.</p>';
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',
'showdown': 'npm:showdown@2.1.0/dist/showdown.js',
'turndown': 'npm:turndown@7.1.2/lib/turndown.browser.umd.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@2.2.13/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 markup = '<h2><img src="../../../../images/widgets/HtmlEditor.svg" alt="HtmlEditor"> Formatted Text Editor (HTML Editor)</h2><p><br></p><p>DevExtreme JavaScript HTML Editor is a client-side WYSIWYG text editor that allows its users to format textual and visual content and store it as HTML or Markdown.</p>';
<!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" />
<link rel="stylesheet" type="text/css" href="styles.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>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
.dx-htmleditor-content img {
vertical-align: middle;
padding-right: 10px;
}
.value-content {
margin-top: 20px;
overflow: auto;
height: 110px;
width: 100%;
white-space: pre-wrap;
}
.options {
margin-top: 20px;
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
box-sizing: border-box;
width: 100%;
}