yuesu/Editors/tiny_mce3.5/plugins/table/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
 */
/* jshint loopfunc: true */
(function(tinymce) {
	var each = tinymce.each;

	// Checks if the selection/caret is at the start of the specified block element
	function isAtStart(rng, par) {
		var doc = par.ownerDocument, rng2 = doc.createRange(), elm;

		rng2.setStartBefore(par);
		rng2.setEnd(rng.endContainer, rng.endOffset);

		elm = doc.createElement('body');
		elm.appendChild(rng2.cloneContents());

		// Check for text characters of other elements that should be treated as content
		return elm.innerHTML.replace(/<(br|img|object|embed|input|textarea)[^>]*>/gi, '-').replace(/<[^>]+>/g, '').length === 0;
	}

	function getSpanVal(td, name) {
		return parseInt(td.getAttribute(name) || 1, 10);
	}

	/**
	 * Table Grid class.
	 */
	function TableGrid(table, dom, selection) {
		var grid, startPos, endPos, selectedCell;

		function cloneNode(node, children) {
			node = node.cloneNode(children);
			node.removeAttribute('id');

			return node;
		}

		function buildGrid() {
			var startY = 0;

			grid = [];

			each(['thead', 'tbody', 'tfoot'], function(part) {
				var rows = dom.select('> ' + part + ' tr', table);

				each(rows, function(tr, y) {
					y += startY;

					each(dom.select('> td, > th', tr), function(td, x) {
						var x2, y2, rowspan, colspan;

						// Skip over existing cells produced by rowspan
						if (grid[y]) {