free restricted key/pointer handlers for UserScript/Bookmarklet

restore-my-rights.user.js

// ==UserScript==
// @name        restore my rights
// @namespace   http://noromanba.flavors.me
// @description free restricted key/pointer handlers for UserScript/Bookmarklet
// @include     http://example.com/DIY/*
// @grant       none
// @noframes
// @run-at      document-end
// @version     2016.7.9.0
// @homepage    https://gist.github.com/noromanba/a350b4060098c8ddcc91
// @downloadURL https://gist.github.com/noromanba/a350b4060098c8ddcc91/raw/restore-my-rights.user.js
// @contributor yuta25      http://let.hatelabo.jp/yuta25/let/hLHWnL_HmJof
// @license     MIT License http://nrm.mit-license.org/2016
// @author      noromanba   http://noromanba.flavors.me
// @icon        https://upload.wikimedia.org/wikipedia/commons/thumb/3/36/Pictograms-nps-accessibility-sign_language_interpretation.svg/32px-Pictograms-nps-accessibility-sign_language_interpretation.svg.png
// @icon64      https://upload.wikimedia.org/wikipedia/commons/thumb/3/36/Pictograms-nps-accessibility-sign_language_interpretation.svg/64px-Pictograms-nps-accessibility-sign_language_interpretation.svg.png
// ==/UserScript==

// Icon (PD by NPS Graphics, ZyMOS)
// https://commons.wikimedia.org/wiki/File:Pictograms-nps-accessibility-sign_language_interpretation.svg

// Bookmarklet
// http://let.hatelabo.jp/noromanba/let/hLHWv_bVvfVX

// Devel
// https://gist.github.com/noromanba/a350b4060098c8ddcc91

// rel.
// http://furyu.hatenablog.com/entry/20150706/1436182102
// http://let.hatelabo.jp/furyu-tei/let/hLHXzbfzoZkS
// https://github.com/furyutei/KashiKaikin


//*/
(() => {
  const clearHandlers = (node) => {
    node.getAttribute && node.getAttribute('unselectable') && node.setAttribute('unselectable', 'off');
    node.onkeydown = null;
    node.onkeypress = null;
    node.onkeyup = null;
    node.onmousedown = null;
    node.oncontextmenu = null;
    node.onselectstart = null;
    node.onselect = null;
    node.oncopy = null;
    node.oncut = null;

    if (!node.style) return;
    [
      '',
      //'-moz-', // *1
      '-webkit-',
      '-khtml-',
      '-ms-',
      '-o-'
    ].forEach(prefix => {
      node.style[prefix + 'user-select'] = 'initial';
    });
    // *1: Fx can not access by bracket-notation; node.style['-moz-user-select']
    //       e.g. http://www.softel.co.jp/blogs/tech/archives/2909
    //       alt; node.style.getPropertyValue('-moz-user-select')
    //     property works well
    node.style.MozUserSelect && (node.style.MozUserSelect = 'initial');
  };
  clearHandlers(document);

  const clearHandlersAll = (ctx) => {
    Array.from(ctx.querySelectorAll('*'), node => {
      clearHandlers(node);
    });
  };
  clearHandlersAll(document);

  new MutationObserver(records => {
    records.forEach(record => {
      // TBD addedNodes
      const ctx = record.target;
      if (!ctx.tagName || !ctx.querySelectorAll) return;

      clearHandlersAll(ctx);
    });
  }).observe(document.body, { childList: true, subtree: true });
})();
/*/
javascript:(()=>{const clearHandlers=(node)=>{node.getAttribute&&node.getAttribute('unselectable')&&node.setAttribute('unselectable','off');node.onkeydown=null;node.onkeypress=null;node.onkeyup=null;node.onmousedown=null;node.oncontextmenu=null;node.onselectstart=null;node.onselect=null;node.oncopy=null;node.oncut=null;if(!node.style)return;['','-webkit-','-khtml-','-ms-','-o-'].forEach(prefix=>{node.style[prefix+'user-select']='initial';});node.style.MozUserSelect&&(node.style.MozUserSelect='initial');};clearHandlers(document);const clearHandlersAll=(ctx)=>{Array.from(ctx.querySelectorAll('*'),node=>{clearHandlers(node);});};clearHandlersAll(document);new MutationObserver(records=>{records.forEach(record=>{const ctx=record.target;if(!ctx.tagName||!ctx.querySelectorAll)return;clearHandlersAll(ctx);});}).observe(document.body,{childList:true,subtree:true});})();
//*/