@douganderson444/svelte-html-editor

v2.3.2

Published

2 years ago

Edit HTML text. Forked from [https://github.com/nenadpnc/cl-editor](https://github.com/nenadpnc/cl-editor) but using SvelteKit.

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douganderson444

Svelte Text Editor

Edit HTML text. Forked from https://github.com/nenadpnc/cl-editor but using SvelteKit.

Lightweight text editor

Built with svelte (no external dependencies)

File size (bundle includes css, html and js)

min: 30kb
gzip: 10kb

Installation

npm:

npm install --save @douganderson444/svelte-html-editor

HTML:

<head>
	...
</head>
<body>
	...
	<div id="editor"></div>
	...
</body>

Usage

import Editor from '@douganderson444/svelte-html-editor/Editor.svelte';

// Initialize editor
const editor = new Editor({
	// <HTMLElement> required
	target: document.getElementById('editor'),
	// optional
	props: {
		// <Array[string | Object]> string if overwriting, object if customizing/creating
		// available actions:
		// 'viewHtml', 'undo', 'redo', 'b', 'i', 'u', 'strike', 'sup', 'sub', 'h1', 'h2', 'p', 'blockquote',
		// 'ol', 'ul', 'hr', 'left', 'right', 'center', 'justify', 'a', 'image', 'forecolor', 'backcolor', 'removeFormat'
		actions: [
			'b',
			'i',
			'u',
			'strike',
			'ul',
			'ol',
			{
				name: 'copy', // required
				icon: '<b>C</b>', // string or html string (ex. <svg>...</svg>)
				title: 'Copy',
				result: () => {
					// copy current selection or whole editor content
					const selection = window.getSelection();
					if (!selection.toString().length) {
						const range = document.createRange();
						range.selectNodeContents(editor.refs.editor);
						selection.removeAllRanges();
						selection.addRange(range);
					}
					editor.exec('copy');
				}
			},
			'h1',
			'h2',
			'p'
		],
		// default 300px
		height: '300px',
		// initial html
		html: '',
		// remove format action clears formatting, but also removes some html tags.
		// you can specify which tags you want to be removed.
		removeFormatTags: ['h1', 'h2', 'blackquote'] // default
	}
});

API

// Methods
editor.exec(cmd: string, value?: string) // execute document command (document.executeCommand(cmd, false, value))
editor.getHtml(sanitize?: boolean) // returns html string from editor. if passed true as argument, html will be sanitized before return
editor.getText() // returns text string from editor
editor.setHtml(html: string, sanitize?: boolean) // sets html for editor. if second argument is true, html will be sanitized
editor.saveRange() // saves current editor cursor position or user selection
editor.restoreRange() // restores cursor position or user selection
// saveRange and restoreRange are useful when making custom actions
// that demands that focus is shifted from editor to, for example, modal window.

For list of available exec command visit https://codepen.io/netsi1964/pen/QbLLG

// Events
editor.$on('change', (event) => console.log(event)); // on every keyup event
editor.$on('blur', (event) => console.log(event)); // on editor blur event

// Props
editor.refs.<editor | raw | modal | colorPicker> // references to editor, raw (textarea), modal and colorPicker HTMLElements

Actions

The actions prop lists predefined actions (and/or adds new actions) to be shown in the toolbar. If the prop is not set, all actions defined and exported in actions.js are made available, in the order in which they are defined. To limit or change the order of predefined actions shown, set it by passing an array of names of actions defined, eg.:

actions={["b", "i", "u", "h2", "ul", "left", "center", "justify", "forecolor"]}

The editor looks up to see if name is already defined, and adds it to the toolbar if it is.

You can add a custom action by inserting it in the array, like how "copy" is defined in example above. Take a look at actions.js for more examples.

Usage in Svelte

It is easier to import and work directly from the source if you are using Svelte. You can handle change events via on:change.

<script>
  import Editor from "@douganderson444/svelte-html-editor/Editor.svelte"

  let html = '<h3>hello</h3>'
  let editor

</script>

{@html html}
<Editor {html} on:change={(evt)=>html = evt.detail}/>

Example of customising the color picker palette

<script>
  import Editor from "@douganderson444/svelte-html-editor/src/Editor.svelte"

  let html = '<h3>hello</h3>'
  let colors = ['#000000', '#e60000', '#ff9900', '#ffff00', '#008a00', '#0066cc', '#9933ff',
        '#ffffff', '#facccc', '#ffebcc', '#ffffcc', '#cce8cc', '#cce0f5', '#ebd6ff',
        '#bbbbbb', '#f06666', '#ffc266', '#ffff66', '#66b966', '#66a3e0', '#c285ff',
        '#888888', '#a10000', '#b26b00', '#b2b200', '#006100', '#0047b2', '#6b24b2',
        '#444444', '#5c0000', '#663d00', '#666600', '#003700', '#002966', '#3d1466']
  let editor

</script>

{@html html}
<Editor {html} {colors} on:change={(evt)=>html = evt.detail}/>

To limit or define the tools shown in the toolbar, pass in an actions prop.

To easily get the editor content DOM element, pass an contentId prop, eg. contentId='notes-content'.

This is useful if you want to listen to resize of the editor and respond accordingly.

To do so, first enable resize on the editor:

.cl-content {
	resize: both;
}

Now observe the resize:

<script>
  const ro = new ResizeObserver(entries => {
    const contentWd = entries[0].contentRect.width
    // respond to contentWd ...
  })
  let editor
  $: editor && ro.observe(document.getElementById('notes-content'))
</script>

<Editor {...otherEditorCfgs} contentId='notes-content' bind:this={editor} />

Run demo

Clone the repo, then:

npm i
npm run dev

References

This library is inspired by these open source repos:

Licence

MIT License