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spellRicher

简单富文本编辑

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/534392/1580077/spellRicher.js 

  1. //altered from https://github.com/ninja33/ODH/blob/master/src/fg/js/spell.js
  2. ;
  3.  
  4. function spell() {
  5.     let exec = (command, value = null) => document.execCommand(command, false, value)
  6.     let ensureHTTP = url => /^https?:\//.test(url) ? url : `https://${url}`
  7.     let $ = (tag, props, children = [], elm = document.createElement(tag)) =>
  8.         children.map(child => child && elm.appendChild(child)) && Object.assign(elm, props)
  9.  
  10.     let colorPicker = _ => $('input', {type: 'color'})
  11.     let select = options => $('select', {}, options.map(o => $('option', {textContent: o})))
  12.  
  13.     let buttons = {};
  14.     let queryState = _ => {
  15.         for (let cmd in buttons)
  16.             buttons[cmd].classList.toggle('selected', document.queryCommandState(cmd))
  17.     }
  18.  
  19.     let actions = [
  20.         [
  21.             ['bold'],
  22.             ['italic'],
  23.             ['underline']
  24.         ],
  25.         [
  26.             ['paragraph', '<p>'],
  27.             ['quote', '<blockquote>'],
  28.             ['code', '<pre>']
  29.         ].map(([title, format]) => [title, _ => exec('formatBlock', format)]),
  30.         [
  31.             ['insertOrderedList'],
  32.             ['insertUnorderedList'],
  33.             ['insertHorizontalRule'],
  34.         ],
  35.         [
  36.             ['removeFormat'],
  37.             ['unlink']
  38.         ],
  39.         [
  40.             ['createLink', 'link', ensureHTTP],
  41.             ['insertImage', 'image', img => img]
  42.         ].map(([cmd, type, t]) => [type, url => (url = prompt(`Enter the ${type} URL`)) && exec(cmd, t(url))]),
  43.         [
  44.             ['undo'],
  45.             ['redo']
  46.         ]
  47.     ]
  48.  
  49.     return $('div', {className: 'spell'}, [
  50.         $('div', {className: 'spell-bar'}, actions.map(
  51.             bar => $('div', {className: 'spell-zone'}, bar.map(
  52.                 ([cmd, onclick = _ => exec(cmd), control]) => buttons[cmd] = $('button', {
  53.                     className: 'spell-icon',
  54.                     title: cmd.replace(/([^a-z])/g, ' $1').toLowerCase(),
  55.                     onclick
  56.                 }, [$('i', {className: 'icon-' + cmd.toLowerCase()}), control])
  57.             ))
  58.         )),
  59.         $('div', {
  60.             className: 'spell-content',
  61.             contentEditable: true,
  62.             onkeydown: event => event.which !== 9,
  63.             onkeyup: queryState,
  64.             onmouseup: queryState
  65.         })
  66.     ])
  67. }