feat(copypaste): improved implementation

Author: thomasleplus

javascripts/DOM - Allow copy paste.js

@@ -1,10 +1,36 @@
-const e = document.getElementsByTagName("*");
-let i;
-for (i = 0; i < e.length; i += 1) {
-  if (e[i].onCopy) {
-    e[i].onCopy = null;
+const blockedEvents = ['copy', 'paste', 'cut', 'selectstart', 'contextmenu', 'dragstart', 'select'];
+const _addEventListener = EventTarget.prototype.addEventListener;
+EventTarget.prototype.addEventListener = function(type, fn, options) {
+  if (blockedEvents.includes(type)) return;
+  _addEventListener.call(this, type, fn, options);
+};
+document.querySelectorAll('*').forEach(el => {
+  const clone = el.cloneNode(true);
+  el.parentNode && el.parentNode.replaceChild(clone, el);
+  blockedEvents.forEach(evt => {
+    clone.removeAttribute('on' + evt);
+    clone[`on${evt}`] = null;
+  });
+});
+blockedEvents.forEach(evt => {
+  document.addEventListener(evt, e => e.stopImmediatePropagation(), true);
+  document[`on${evt}`] = null;
+});
+const style = document.createElement('style');
+style.textContent = `
+  * {
+    -webkit-user-select: text !important;
+    -moz-user-select: text !important;
+    -ms-user-select: text !important;
+    user-select: text !important;
+    pointer-events: auto !important;
   }
-  if (e[i].onPaste) {
-    e[i].onPaste = null;
+`;
+document.head.appendChild(style);
+const _dispatchEvent = EventTarget.prototype.dispatchEvent;
+EventTarget.prototype.dispatchEvent = function(e) {
+  if (blockedEvents.includes(e.type) && e.cancelable) {
+    Object.defineProperty(e, 'defaultPrevented', { get: () => false });
   }
-}
+  return _dispatchEvent.call(this, e);
+};

javascripts/DOM - Allow right-click.js

@@ -17,11 +17,7 @@
   },
   {
     "name": "DOM - Allow copy paste",
-    "description": "This bookmarklet reenables copy/paste on all elements in the page (typically a text field or text area)."
-  },
-  {
-    "name": "DOM - Allow right-click",
-    "description": "This bookmarklet reenables the right-click context menu on a page."
+      "description": "This bookmarklet reenables copy/paste, selection, right-click, etc. on all elements in the page (typically a text field or text area)."
   },
   {
     "name": "DOM - Allow save password",