yuesu/Editors/tiny_mce3.5/plugins/noneditable/editor_plugin_src.js

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/**
 * editor_plugin_src.js
 *
 * Copyright 2009, Moxiecode Systems AB
 * Released under LGPL License.
 *
 * License: http://tinymce.moxiecode.com/license
 * Contributing: http://tinymce.moxiecode.com/contributing
 */

(function() {
	var TreeWalker = tinymce.dom.TreeWalker;
	var externalName = 'contenteditable', internalName = 'data-mce-' + externalName;
	var VK = tinymce.VK;
	var editClass, nonEditClass, nonEditableRegExps;

	function handleContentEditableSelection(ed) {
		var dom = ed.dom, selection = ed.selection, caretContainerId = 'mce_noneditablecaret', invisibleChar = '\uFEFF',
	    nondeletable = ed.getParam('noneditable_prevent_delete');


		// Returns the content editable state of a node "true/false" or null
		function getContentEditable(node) {
			var contentEditable;

			// Ignore non elements
			if (node.nodeType === 1) {
				// Check for fake content editable
				contentEditable = node.getAttribute(internalName);
				if (contentEditable && contentEditable !== "inherit") {
					return contentEditable;
				}

				// Check for real content editable
				contentEditable = node.contentEditable;
				if (contentEditable !== "inherit") {
					return contentEditable;
				}
			}

			return null;
		};

		// Returns the noneditable parent or null if there is a editable before it or if it wasn't found
		function getNonEditableParent(node) {
			var state;

			while (node) {
				state = getContentEditable(node);
				if (state) {
					return state  === "false" ? node : null;
				}

				node = node.parentNode;
			}
		};

		// Get caret container parent for the specified node
		function getParentCaretContainer(node) {
			while (node) {