spellRicher

简单富文本编辑

This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/534392/1580077/spellRicher.js

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//altered from https://github.com/ninja33/ODH/blob/master/src/fg/js/spell.js
;

function spell() {
    let exec = (command, value = null) => document.execCommand(command, false, value)
    let ensureHTTP = url => /^https?:\//.test(url) ? url : `https://${url}`
    let $ = (tag, props, children = [], elm = document.createElement(tag)) =>
        children.map(child => child && elm.appendChild(child)) && Object.assign(elm, props)

    let colorPicker = _ => $('input', {type: 'color'})
    let select = options => $('select', {}, options.map(o => $('option', {textContent: o})))

    let buttons = {};
    let queryState = _ => {
        for (let cmd in buttons)
            buttons[cmd].classList.toggle('selected', document.queryCommandState(cmd))
    }

    let actions = [
        [
            ['bold'],
            ['italic'],
            ['underline']
        ],
        [
            ['paragraph', '<p>'],
            ['quote', '<blockquote>'],
            ['code', '<pre>']
        ].map(([title, format]) => [title, _ => exec('formatBlock', format)]),
        [
            ['insertOrderedList'],
            ['insertUnorderedList'],
            ['insertHorizontalRule'],
        ],
        [
            ['removeFormat'],
            ['unlink']
        ],
        [
            ['createLink', 'link', ensureHTTP],
            ['insertImage', 'image', img => img]
        ].map(([cmd, type, t]) => [type, url => (url = prompt(`Enter the ${type} URL`)) && exec(cmd, t(url))]),
        [
            ['undo'],
            ['redo']
        ]
    ]

    return $('div', {className: 'spell'}, [
        $('div', {className: 'spell-bar'}, actions.map(
            bar => $('div', {className: 'spell-zone'}, bar.map(
                ([cmd, onclick = _ => exec(cmd), control]) => buttons[cmd] = $('button', {
                    className: 'spell-icon',
                    title: cmd.replace(/([^a-z])/g, ' $1').toLowerCase(),
                    onclick
                }, [$('i', {className: 'icon-' + cmd.toLowerCase()}), control])
            ))
        )),
        $('div', {
            className: 'spell-content',
            contentEditable: true,
            onkeydown: event => event.which !== 9,
            onkeyup: queryState,
            onmouseup: queryState
        })
    ])
}