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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(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);
	}

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

		buildGrid();
		selectedCell = dom.getParent(selection.getStart(), 'th,td');
		if (selectedCell) {
			startPos = getPos(selectedCell);
			endPos = findEndPos();
			selectedCell = getCell(startPos.x, startPos.y);
		}

		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]) {
							while (grid[y][x])
								x++;
						}

						// Get col/rowspan from cell
						rowspan = getSpanVal(td, 'rowspan');
						colspan = getSpanVal(td, 'colspan');

						// Fill out rowspan/colspan right and down
						for (y2 = y; y2 < y + rowspan; y2++) {
							if (!grid[y2])
								grid[y2] = [];

							for (x2 = x; x2 < x + colspan; x2++) {
								grid[y2][x2] = {
									part : part,
									real : y2 == y && x2 == x,
									elm : td,
									rowspan : rowspan,
									colspan : colspan
								};
							}
						}
					});
				});

				startY += rows.length;
			});
		};

		function getCell(x, y) {
			var row;

			row = grid[y];
			if (row)
				return row[x];
		};

		function setSpanVal(td, name, val) {
			if (td) {
				val = parseInt(val);

				if (val === 1)
					td.removeAttribute(name, 1);
				else
					td.setAttribute(name, val, 1);
			}
		}

		function isCellSelected(cell) {
			return cell && (dom.hasClass(cell.elm, 'mceSelected') || cell == selectedCell);
		};

		function getSelectedRows() {
			var rows = [];

			each(table.rows, function(row) {
				each(row.cells, function(cell) {
					if (dom.hasClass(cell, 'mceSelected') || cell == selectedCell.elm) {
						rows.push(row);
						return false;
					}
				});
			});

			return rows;
		};

		function deleteTable() {
			var rng = dom.createRng();

			rng.setStartAfter(table);
			rng.setEndAfter(table);

			selection.setRng(rng);

			dom.remove(table);
		};

		function cloneCell(cell) {
			var formatNode;

			// Clone formats
			tinymce.walk(cell, function(node) {
				var curNode;

				if (node.nodeType == 3) {
					each(dom.getParents(node.parentNode, null, cell).reverse(), function(node) {
						node = cloneNode(node, false);

						if (!formatNode)
							formatNode = curNode = node;
						else if (curNode)
							curNode.appendChild(node);

						curNode = node;
					});

					// Add something to the inner node
					if (curNode)
						curNode.innerHTML = tinymce.isIE ? '&nbsp;' : '<br data-mce-bogus="1" />';

					return false;
				}
			}, 'childNodes');

			cell = cloneNode(cell, false);
			setSpanVal(cell, 'rowSpan', 1);
			setSpanVal(cell, 'colSpan', 1);

			if (formatNode) {
				cell.appendChild(formatNode);
			} else {
				if (!tinymce.isIE)
					cell.innerHTML = '<br data-mce-bogus="1" />';
			}

			return cell;
		};

		function cleanup() {
			var rng = dom.createRng();

			// Empty rows
			each(dom.select('tr', table), function(tr) {
				if (tr.cells.length == 0)
					dom.remove(tr);
			});

			// Empty table
			if (dom.select('tr', table).length == 0) {
				rng.setStartAfter(table);
				rng.setEndAfter(table);
				selection.setRng(rng);
				dom.remove(table);
				return;
			}

			// Empty header/body/footer
			each(dom.select('thead,tbody,tfoot', table), function(part) {
				if (part.rows.length == 0)
					dom.remove(part);
			});

			// Restore selection to start position if it still exists
			buildGrid();

			// Restore the selection to the closest table position
			row = grid[Math.min(grid.length - 1, startPos.y)];
			if (row) {
				selection.select(row[Math.min(row.length - 1, startPos.x)].elm, true);
				selection.collapse(true);
			}
		};

		function fillLeftDown(x, y, rows, cols) {
			var tr, x2, r, c, cell;

			tr = grid[y][x].elm.parentNode;
			for (r = 1; r <= rows; r++) {
				tr = dom.getNext(tr, 'tr');

				if (tr) {
					// Loop left to find real cell
					for (x2 = x; x2 >= 0; x2--) {
						cell = grid[y + r][x2].elm;

						if (cell.parentNode == tr) {
							// Append clones after
							for (c = 1; c <= cols; c++)
								dom.insertAfter(cloneCell(cell), cell);

							break;
						}
					}

					if (x2 == -1) {
						// Insert nodes before first cell
						for (c = 1; c <= cols; c++)
							tr.insertBefore(cloneCell(tr.cells[0]), tr.cells[0]);
					}
				}
			}
		};

		function split() {
			each(grid, function(row, y) {
				each(row, function(cell, x) {
					var colSpan, rowSpan, newCell, i;

					if (isCellSelected(cell)) {
						cell = cell.elm;
						colSpan = getSpanVal(cell, 'colspan');
						rowSpan = getSpanVal(cell, 'rowspan');

						if (colSpan > 1 || rowSpan > 1) {
							setSpanVal(cell, 'rowSpan', 1);
							setSpanVal(cell, 'colSpan', 1);

							// Insert cells right
							for (i = 0; i < colSpan - 1; i++)
								dom.insertAfter(cloneCell(cell), cell);

							fillLeftDown(x, y, rowSpan - 1, colSpan);
						}
					}
				});
			});
		};

		function merge(cell, cols, rows) {
			var startX, startY, endX, endY, x, y, startCell, endCell, cell, children, count;

			// Use specified cell and cols/rows
			if (cell) {
				pos = getPos(cell);
				startX = pos.x;
				startY = pos.y;
				endX = startX + (cols - 1);
				endY = startY + (rows - 1);
			} else {
				// Use selection
				startX = startPos.x;
				startY = startPos.y;
				endX = endPos.x;
				endY = endPos.y;
			}

			// Find start/end cells
			startCell = getCell(startX, startY);
			endCell = getCell(endX, endY);

			// Check if the cells exists and if they are of the same part for example tbody = tbody
			if (startCell && endCell && startCell.part == endCell.part) {
				// Split and rebuild grid
				split();
				buildGrid();

				// Set row/col span to start cell
				startCell = getCell(startX, startY).elm;
				setSpanVal(startCell, 'colSpan', (endX - startX) + 1);
				setSpanVal(startCell, 'rowSpan', (endY - startY) + 1);

				// Remove other cells and add it's contents to the start cell
				for (y = startY; y <= endY; y++) {
					for (x = startX; x <= endX; x++) {
						if (!grid[y] || !grid[y][x])
							continue;

						cell = grid[y][x].elm;

						if (cell != startCell) {
							// Move children to startCell
							children = tinymce.grep(cell.childNodes);
							each(children, function(node) {
								startCell.appendChild(node);
							});

							// Remove bogus nodes if there is children in the target cell
							if (children.length) {
								children = tinymce.grep(startCell.childNodes);
								count = 0;
								each(children, function(node) {
									if (node.nodeName == 'BR' && dom.getAttrib(node, 'data-mce-bogus') && count++ < children.length - 1)
										startCell.removeChild(node);
								});
							}
							
							// Remove cell
							dom.remove(cell);
						}
					}
				}

				// Remove empty rows etc and restore caret location
				cleanup();
			}
		};

		function insertRow(before) {
			var posY, cell, lastCell, x, rowElm, newRow, newCell, otherCell, rowSpan;

			// Find first/last row
			each(grid, function(row, y) {
				each(row, function(cell, x) {
					if (isCellSelected(cell)) {
						cell = cell.elm;
						rowElm = cell.parentNode;
						newRow = cloneNode(rowElm, false);
						posY = y;

						if (before)
							return false;
					}
				});

				if (before)
					return !posY;
			});

			for (x = 0; x < grid[0].length; x++) {
				// Cell not found could be because of an invalid table structure
				if (!grid[posY][x])
					continue;

				cell = grid[posY][x].elm;

				if (cell != lastCell) {
					if (!before) {
						rowSpan = getSpanVal(cell, 'rowspan');
						if (rowSpan > 1) {
							setSpanVal(cell, 'rowSpan', rowSpan + 1);
							continue;
						}
					} else {
						// Check if cell above can be expanded
						if (posY > 0 && grid[posY - 1][x]) {
							otherCell = grid[posY - 1][x].elm;
							rowSpan = getSpanVal(otherCell, 'rowSpan');
							if (rowSpan > 1) {
								setSpanVal(otherCell, 'rowSpan', rowSpan + 1);
								continue;
							}
						}
					}

					// Insert new cell into new row
					newCell = cloneCell(cell);
					setSpanVal(newCell, 'colSpan', cell.colSpan);

					newRow.appendChild(newCell);

					lastCell = cell;
				}
			}

			if (newRow.hasChildNodes()) {
				if (!before)
					dom.insertAfter(newRow, rowElm);
				else
					rowElm.parentNode.insertBefore(newRow, rowElm);
			}
		};

		function insertCol(before) {
			var posX, lastCell;

			// Find first/last column
			each(grid, function(row, y) {
				each(row, function(cell, x) {
					if (isCellSelected(cell)) {
						posX = x;

						if (before)
							return false;
					}
				});

				if (before)
					return !posX;
			});

			each(grid, function(row, y) {
				var cell, rowSpan, colSpan;

				if (!row[posX])
					return;

				cell = row[posX].elm;
				if (cell != lastCell) {
					colSpan = getSpanVal(cell, 'colspan');
					rowSpan = getSpanVal(cell, 'rowspan');

					if (colSpan == 1) {
						if (!before) {
							dom.insertAfter(cloneCell(cell), cell);
							fillLeftDown(posX, y, rowSpan - 1, colSpan);
						} else {
							cell.parentNode.insertBefore(cloneCell(cell), cell);
							fillLeftDown(posX, y, rowSpan - 1, colSpan);
						}
					} else
						setSpanVal(cell, 'colSpan', cell.colSpan + 1);

					lastCell = cell;
				}
			});
		};

		function deleteCols() {
			var cols = [];

			// Get selected column indexes
			each(grid, function(row, y) {
				each(row, function(cell, x) {
					if (isCellSelected(cell) && tinymce.inArray(cols, x) === -1) {
						each(grid, function(row) {
							var cell = row[x].elm, colSpan;

							colSpan = getSpanVal(cell, 'colSpan');

							if (colSpan > 1)
								setSpanVal(cell, 'colSpan', colSpan - 1);
							else
								dom.remove(cell);
						});

						cols.push(x);
					}
				});
			});

			cleanup();
		};

		function deleteRows() {
			var rows;

			function deleteRow(tr) {
				var nextTr, pos, lastCell;

				nextTr = dom.getNext(tr, 'tr');

				// Move down row spanned cells
				each(tr.cells, function(cell) {
					var rowSpan = getSpanVal(cell, 'rowSpan');

					if (rowSpan > 1) {
						setSpanVal(cell, 'rowSpan', rowSpan - 1);
						pos = getPos(cell);
						fillLeftDown(pos.x, pos.y, 1, 1);
					}
				});

				// Delete cells
				pos = getPos(tr.cells[0]);
				each(grid[pos.y], function(cell) {
					var rowSpan;

					cell = cell.elm;

					if (cell != lastCell) {
						rowSpan = getSpanVal(cell, 'rowSpan');

						if (rowSpan <= 1)
							dom.remove(cell);
						else
							setSpanVal(cell, 'rowSpan', rowSpan - 1);

						lastCell = cell;
					}
				});
			};

			// Get selected rows and move selection out of scope
			rows = getSelectedRows();

			// Delete all selected rows
			each(rows.reverse(), function(tr) {
				deleteRow(tr);
			});

			cleanup();
		};

		function cutRows() {
			var rows = getSelectedRows();

			dom.remove(rows);
			cleanup();

			return rows;
		};

		function copyRows() {
			var rows = getSelectedRows();

			each(rows, function(row, i) {
				rows[i] = cloneNode(row, true);
			});

			return rows;
		};

		function pasteRows(rows, before) {
			var selectedRows = getSelectedRows(),
				targetRow = selectedRows[before ? 0 : selectedRows.length - 1],
				targetCellCount = targetRow.cells.length;

			// Calc target cell count
			each(grid, function(row) {
				var match;

				targetCellCount = 0;
				each(row, function(cell, x) {
					if (cell.real)
						targetCellCount += cell.colspan;

					if (cell.elm.parentNode == targetRow)
						match = 1;
				});

				if (match)
					return false;
			});

			if (!before)
				rows.reverse();

			each(rows, function(row) {
				var cellCount = row.cells.length, cell;

				// Remove col/rowspans
				for (i = 0; i < cellCount; i++) {
					cell = row.cells[i];
					setSpanVal(cell, 'colSpan', 1);
					setSpanVal(cell, 'rowSpan', 1);
				}

				// Needs more cells
				for (i = cellCount; i < targetCellCount; i++)
					row.appendChild(cloneCell(row.cells[cellCount - 1]));

				// Needs less cells
				for (i = targetCellCount; i < cellCount; i++)
					dom.remove(row.cells[i]);

				// Add before/after
				if (before)
					targetRow.parentNode.insertBefore(row, targetRow);
				else
					dom.insertAfter(row, targetRow);
			});
		};

		function getPos(target) {
			var pos;

			each(grid, function(row, y) {
				each(row, function(cell, x) {
					if (cell.elm == target) {
						pos = {x : x, y : y};
						return false;
					}
				});

				return !pos;
			});

			return pos;
		};

		function setStartCell(cell) {
			startPos = getPos(cell);
		};

		function findEndPos() {
			var pos, maxX, maxY;

			maxX = maxY = 0;

			each(grid, function(row, y) {
				each(row, function(cell, x) {
					var colSpan, rowSpan;

					if (isCellSelected(cell)) {
						cell = grid[y][x];

						if (x > maxX)
							maxX = x;

						if (y > maxY)
							maxY = y;

						if (cell.real) {
							colSpan = cell.colspan - 1;
							rowSpan = cell.rowspan - 1;

							if (colSpan) {
								if (x + colSpan > maxX)
									maxX = x + colSpan;
							}

							if (rowSpan) {
								if (y + rowSpan > maxY)
									maxY = y + rowSpan;
							}
						}
					}
				});
			});

			return {x : maxX, y : maxY};
		};

		function setEndCell(cell) {
			var startX, startY, endX, endY, maxX, maxY, colSpan, rowSpan;

			endPos = getPos(cell);

			if (startPos && endPos) {
				// Get start/end positions
				startX = Math.min(startPos.x, endPos.x);
				startY = Math.min(startPos.y, endPos.y);
				endX = Math.max(startPos.x, endPos.x);
				endY = Math.max(startPos.y, endPos.y);

				// Expand end positon to include spans
				maxX = endX;
				maxY = endY;

				// Expand startX
				for (y = startY; y <= maxY; y++) {
					cell = grid[y][startX];

					if (!cell.real) {
						if (startX - (cell.colspan - 1) < startX)
							startX -= cell.colspan - 1;
					}
				}

				// Expand startY
				for (x = startX; x <= maxX; x++) {
					cell = grid[startY][x];

					if (!cell.real) {
						if (startY - (cell.rowspan - 1) < startY)
							startY -= cell.rowspan - 1;
					}
				}

				// Find max X, Y
				for (y = startY; y <= endY; y++) {
					for (x = startX; x <= endX; x++) {
						cell = grid[y][x];

						if (cell.real) {
							colSpan = cell.colspan - 1;
							rowSpan = cell.rowspan - 1;

							if (colSpan) {
								if (x + colSpan > maxX)
									maxX = x + colSpan;
							}

							if (rowSpan) {
								if (y + rowSpan > maxY)
									maxY = y + rowSpan;
							}
						}
					}
				}

				// Remove current selection
				dom.removeClass(dom.select('td.mceSelected,th.mceSelected'), 'mceSelected');

				// Add new selection
				for (y = startY; y <= maxY; y++) {
					for (x = startX; x <= maxX; x++) {
						if (grid[y][x])
							dom.addClass(grid[y][x].elm, 'mceSelected');
					}
				}
			}
		};

		// Expose to public
		tinymce.extend(this, {
			deleteTable : deleteTable,
			split : split,
			merge : merge,
			insertRow : insertRow,
			insertCol : insertCol,
			deleteCols : deleteCols,
			deleteRows : deleteRows,
			cutRows : cutRows,
			copyRows : copyRows,
			pasteRows : pasteRows,
			getPos : getPos,
			setStartCell : setStartCell,
			setEndCell : setEndCell
		});
	};

	tinymce.create('tinymce.plugins.TablePlugin', {
		init : function(ed, url) {
			var winMan, clipboardRows, hasCellSelection = true; // Might be selected cells on reload

			function createTableGrid(node) {
				var selection = ed.selection, tblElm = ed.dom.getParent(node || selection.getNode(), 'table');

				if (tblElm)
					return new TableGrid(tblElm, ed.dom, selection);
			};

			function cleanup() {
				// Restore selection possibilities
				ed.getBody().style.webkitUserSelect = '';

				if (hasCellSelection) {
					ed.dom.removeClass(ed.dom.select('td.mceSelected,th.mceSelected'), 'mceSelected');
					hasCellSelection = false;
				}
			};

			// Register buttons
			each([
				['table', 'table.desc', 'mceInsertTable', true],
				['delete_table', 'table.del', 'mceTableDelete'],
				['delete_col', 'table.delete_col_desc', 'mceTableDeleteCol'],
				['delete_row', 'table.delete_row_desc', 'mceTableDeleteRow'],
				['col_after', 'table.col_after_desc', 'mceTableInsertColAfter'],
				['col_before', 'table.col_before_desc', 'mceTableInsertColBefore'],
				['row_after', 'table.row_after_desc', 'mceTableInsertRowAfter'],
				['row_before', 'table.row_before_desc', 'mceTableInsertRowBefore'],
				['row_props', 'table.row_desc', 'mceTableRowProps', true],
				['cell_props', 'table.cell_desc', 'mceTableCellProps', true],
				['split_cells', 'table.split_cells_desc', 'mceTableSplitCells', true],
				['merge_cells', 'table.merge_cells_desc', 'mceTableMergeCells', true]
			], function(c) {
				ed.addButton(c[0], {title : c[1], cmd : c[2], ui : c[3]});
			});

			// Select whole table is a table border is clicked
			if (!tinymce.isIE) {
				ed.onClick.add(function(ed, e) {
					e = e.target;

					if (e.nodeName === 'TABLE') {
						ed.selection.select(e);
						ed.nodeChanged();
					}
				});
			}

			ed.onPreProcess.add(function(ed, args) {
				var nodes, i, node, dom = ed.dom, value;

				nodes = dom.select('table', args.node);
				i = nodes.length;
				while (i--) {
					node = nodes[i];
					dom.setAttrib(node, 'data-mce-style', '');

					if ((value = dom.getAttrib(node, 'width'))) {
						dom.setStyle(node, 'width', value);
						dom.setAttrib(node, 'width', '');
					}

					if ((value = dom.getAttrib(node, 'height'))) {
						dom.setStyle(node, 'height', value);
						dom.setAttrib(node, 'height', '');
					}
				}
			});

			// Handle node change updates
			ed.onNodeChange.add(function(ed, cm, n) {
				var p;

				n = ed.selection.getStart();
				p = ed.dom.getParent(n, 'td,th,caption');
				cm.setActive('table', n.nodeName === 'TABLE' || !!p);

				// Disable table tools if we are in caption
				if (p && p.nodeName === 'CAPTION')
					p = 0;

				cm.setDisabled('delete_table', !p);
				cm.setDisabled('delete_col', !p);
				cm.setDisabled('delete_table', !p);
				cm.setDisabled('delete_row', !p);
				cm.setDisabled('col_after', !p);
				cm.setDisabled('col_before', !p);
				cm.setDisabled('row_after', !p);
				cm.setDisabled('row_before', !p);
				cm.setDisabled('row_props', !p);
				cm.setDisabled('cell_props', !p);
				cm.setDisabled('split_cells', !p);
				cm.setDisabled('merge_cells', !p);
			});

			ed.onInit.add(function(ed) {
				var startTable, startCell, dom = ed.dom, tableGrid;

				winMan = ed.windowManager;

				// Add cell selection logic
				ed.onMouseDown.add(function(ed, e) {
					if (e.button != 2) {
						cleanup();

						startCell = dom.getParent(e.target, 'td,th');
						startTable = dom.getParent(startCell, 'table');
					}
				});

				dom.bind(ed.getDoc(), 'mouseover', function(e) {
					var sel, table, target = e.target;

					if (startCell && (tableGrid || target != startCell) && (target.nodeName == 'TD' || target.nodeName == 'TH')) {
						table = dom.getParent(target, 'table');
						if (table == startTable) {
							if (!tableGrid) {
								tableGrid = createTableGrid(table);
								tableGrid.setStartCell(startCell);

								ed.getBody().style.webkitUserSelect = 'none';
							}

							tableGrid.setEndCell(target);
							hasCellSelection = true;
						}

						// Remove current selection
						sel = ed.selection.getSel();

						try {
							if (sel.removeAllRanges)
								sel.removeAllRanges();
							else
								sel.empty();
						} catch (ex) {
							// IE9 might throw errors here
						}

						e.preventDefault();
					}
				});

				ed.onMouseUp.add(function(ed, e) {
					var rng, sel = ed.selection, selectedCells, nativeSel = sel.getSel(), walker, node, lastNode, endNode;

					// Move selection to startCell
					if (startCell) {
						if (tableGrid)
							ed.getBody().style.webkitUserSelect = '';

						function setPoint(node, start) {
							var walker = new tinymce.dom.TreeWalker(node, node);

							do {
								// Text node
								if (node.nodeType == 3 && tinymce.trim(node.nodeValue).length != 0) {
									if (start)
										rng.setStart(node, 0);
									else
										rng.setEnd(node, node.nodeValue.length);

									return;
								}

								// BR element
								if (node.nodeName == 'BR') {
									if (start)
										rng.setStartBefore(node);
									else
										rng.setEndBefore(node);

									return;
								}
							} while (node = (start ? walker.next() : walker.prev()));
						}

						// Try to expand text selection as much as we can only Gecko supports cell selection
						selectedCells = dom.select('td.mceSelected,th.mceSelected');
						if (selectedCells.length > 0) {
							rng = dom.createRng();
							node = selectedCells[0];
							endNode = selectedCells[selectedCells.length - 1];
							rng.setStartBefore(node);
							rng.setEndAfter(node);

							setPoint(node, 1);
							walker = new tinymce.dom.TreeWalker(node, dom.getParent(selectedCells[0], 'table'));

							do {
								if (node.nodeName == 'TD' || node.nodeName == 'TH') {
									if (!dom.hasClass(node, 'mceSelected'))
										break;

									lastNode = node;
								}
							} while (node = walker.next());

							setPoint(lastNode);

							sel.setRng(rng);
						}

						ed.nodeChanged();
						startCell = tableGrid = startTable = null;
					}
				});

				ed.onKeyUp.add(function(ed, e) {
					cleanup();
				});

				ed.onKeyDown.add(function (ed, e) {
					fixTableCellSelection(ed);
				});

				ed.onMouseDown.add(function (ed, e) {
					if (e.button != 2) {
						fixTableCellSelection(ed);
					}
				});
				function tableCellSelected(ed, rng, n, currentCell) {
					// The decision of when a table cell is selected is somewhat involved.  The fact that this code is
					// required is actually a pointer to the root cause of this bug. A cell is selected when the start 
					// and end offsets are 0, the start container is a text, and the selection node is either a TR (most cases)
					// or the parent of the table (in the case of the selection containing the last cell of a table).
					var TEXT_NODE = 3, table = ed.dom.getParent(rng.startContainer, 'TABLE'), 
					tableParent, allOfCellSelected, tableCellSelection;
					if (table) 
					tableParent = table.parentNode;
					allOfCellSelected =rng.startContainer.nodeType == TEXT_NODE && 
						rng.startOffset == 0 && 
						rng.endOffset == 0 && 
						currentCell && 
						(n.nodeName=="TR" || n==tableParent);
					tableCellSelection = (n.nodeName=="TD"||n.nodeName=="TH")&& !currentCell;	   
					return  allOfCellSelected || tableCellSelection;
					// return false;
				}
				
				// this nasty hack is here to work around some WebKit selection bugs.
				function fixTableCellSelection(ed) {
					if (!tinymce.isWebKit)
						return;

					var rng = ed.selection.getRng();
					var n = ed.selection.getNode();
					var currentCell = ed.dom.getParent(rng.startContainer, 'TD,TH');
				
					if (!tableCellSelected(ed, rng, n, currentCell))
						return;
						if (!currentCell) {
							currentCell=n;
						}
					
					// Get the very last node inside the table cell
					var end = currentCell.lastChild;
					while (end.lastChild)
						end = end.lastChild;
					
					// Select the entire table cell. Nothing outside of the table cell should be selected.
					rng.setEnd(end, end.nodeValue.length);
					ed.selection.setRng(rng);
				}
				ed.plugins.table.fixTableCellSelection=fixTableCellSelection;

				// Add context menu
				if (ed && ed.plugins.contextmenu) {
					ed.plugins.contextmenu.onContextMenu.add(function(th, m, e) {
						var sm, se = ed.selection, el = se.getNode() || ed.getBody();

						if (ed.dom.getParent(e, 'td') || ed.dom.getParent(e, 'th') || ed.dom.select('td.mceSelected,th.mceSelected').length) {
							m.removeAll();

							if (el.nodeName == 'A' && !ed.dom.getAttrib(el, 'name')) {
								m.add({title : 'advanced.link_desc', icon : 'link', cmd : ed.plugins.advlink ? 'mceAdvLink' : 'mceLink', ui : true});
								m.add({title : 'advanced.unlink_desc', icon : 'unlink', cmd : 'UnLink'});
								m.addSeparator();
							}

							if (el.nodeName == 'IMG' && el.className.indexOf('mceItem') == -1) {
								m.add({title : 'advanced.image_desc', icon : 'image', cmd : ed.plugins.advimage ? 'mceAdvImage' : 'mceImage', ui : true});
								m.addSeparator();
							}

							m.add({title : 'table.desc', icon : 'table', cmd : 'mceInsertTable', value : {action : 'insert'}});
							m.add({title : 'table.props_desc', icon : 'table_props', cmd : 'mceInsertTable'});
							m.add({title : 'table.del', icon : 'delete_table', cmd : 'mceTableDelete'});
							m.addSeparator();

							// Cell menu
							sm = m.addMenu({title : 'table.cell'});
							sm.add({title : 'table.cell_desc', icon : 'cell_props', cmd : 'mceTableCellProps'});
							sm.add({title : 'table.split_cells_desc', icon : 'split_cells', cmd : 'mceTableSplitCells'});
							sm.add({title : 'table.merge_cells_desc', icon : 'merge_cells', cmd : 'mceTableMergeCells'});

							// Row menu
							sm = m.addMenu({title : 'table.row'});
							sm.add({title : 'table.row_desc', icon : 'row_props', cmd : 'mceTableRowProps'});
							sm.add({title : 'table.row_before_desc', icon : 'row_before', cmd : 'mceTableInsertRowBefore'});
							sm.add({title : 'table.row_after_desc', icon : 'row_after', cmd : 'mceTableInsertRowAfter'});
							sm.add({title : 'table.delete_row_desc', icon : 'delete_row', cmd : 'mceTableDeleteRow'});
							sm.addSeparator();
							sm.add({title : 'table.cut_row_desc', icon : 'cut', cmd : 'mceTableCutRow'});
							sm.add({title : 'table.copy_row_desc', icon : 'copy', cmd : 'mceTableCopyRow'});
							sm.add({title : 'table.paste_row_before_desc', icon : 'paste', cmd : 'mceTablePasteRowBefore'}).setDisabled(!clipboardRows);
							sm.add({title : 'table.paste_row_after_desc', icon : 'paste', cmd : 'mceTablePasteRowAfter'}).setDisabled(!clipboardRows);

							// Column menu
							sm = m.addMenu({title : 'table.col'});
							sm.add({title : 'table.col_before_desc', icon : 'col_before', cmd : 'mceTableInsertColBefore'});
							sm.add({title : 'table.col_after_desc', icon : 'col_after', cmd : 'mceTableInsertColAfter'});
							sm.add({title : 'table.delete_col_desc', icon : 'delete_col', cmd : 'mceTableDeleteCol'});
						} else
							m.add({title : 'table.desc', icon : 'table', cmd : 'mceInsertTable'});
					});
				}

				// Fix to allow navigating up and down in a table in WebKit browsers.
				if (tinymce.isWebKit) {
					function moveSelection(ed, e) {
						var VK = tinymce.VK;
						var key = e.keyCode;

						function handle(upBool, sourceNode, event) {
							var siblingDirection = upBool ? 'previousSibling' : 'nextSibling';
							var currentRow = ed.dom.getParent(sourceNode, 'tr');
							var siblingRow = currentRow[siblingDirection];

							if (siblingRow) {
								moveCursorToRow(ed, sourceNode, siblingRow, upBool);
								tinymce.dom.Event.cancel(event);
								return true;
							} else {
								var tableNode = ed.dom.getParent(currentRow, 'table');
								var middleNode = currentRow.parentNode;
								var parentNodeName = middleNode.nodeName.toLowerCase();
								if (parentNodeName === 'tbody' || parentNodeName === (upBool ? 'tfoot' : 'thead')) {
									var targetParent = getTargetParent(upBool, tableNode, middleNode, 'tbody');
									if (targetParent !== null) {
										return moveToRowInTarget(upBool, targetParent, sourceNode, event);
									}
								}
								return escapeTable(upBool, currentRow, siblingDirection, tableNode, event);
							}
						}

						function getTargetParent(upBool, topNode, secondNode, nodeName) {
							var tbodies = ed.dom.select('>' + nodeName, topNode);
							var position = tbodies.indexOf(secondNode);
							if (upBool && position === 0 || !upBool && position === tbodies.length - 1) {
								return getFirstHeadOrFoot(upBool, topNode);
							} else if (position === -1) {
								var topOrBottom = secondNode.tagName.toLowerCase() === 'thead' ? 0 : tbodies.length - 1;
								return tbodies[topOrBottom];
							} else {
								return tbodies[position + (upBool ? -1 : 1)];
							}
						}

						function getFirstHeadOrFoot(upBool, parent) {
							var tagName = upBool ? 'thead' : 'tfoot';
							var headOrFoot = ed.dom.select('>' + tagName, parent);
							return headOrFoot.length !== 0 ? headOrFoot[0] : null;
						}

						function moveToRowInTarget(upBool, targetParent, sourceNode, event) {
							var targetRow = getChildForDirection(targetParent, upBool);
							targetRow && moveCursorToRow(ed, sourceNode, targetRow, upBool);
							tinymce.dom.Event.cancel(event);
							return true;
						}

						function escapeTable(upBool, currentRow, siblingDirection, table, event) {
							var tableSibling = table[siblingDirection];
							if (tableSibling) {
								moveCursorToStartOfElement(tableSibling);
								return true;
							} else {
								var parentCell = ed.dom.getParent(table, 'td,th');
								if (parentCell) {
									return handle(upBool, parentCell, event);
								} else {
									var backUpSibling = getChildForDirection(currentRow, !upBool);
									moveCursorToStartOfElement(backUpSibling);
									return tinymce.dom.Event.cancel(event);
								}
							}
						}

						function getChildForDirection(parent, up) {
							return parent && parent[up ? 'lastChild' : 'firstChild'];
						}

						function moveCursorToStartOfElement(n) {
							ed.selection.setCursorLocation(n, 0);
						}

						function isVerticalMovement() {
							return key == VK.UP || key == VK.DOWN;
						}

						function isInTable(ed) {
							var node = ed.selection.getNode();
							var currentRow = ed.dom.getParent(node, 'tr');
							return currentRow !== null;
						}

						function columnIndex(column) {
							var colIndex = 0;
							var c = column;
							while (c.previousSibling) {
								c = c.previousSibling;
								colIndex = colIndex + getSpanVal(c, "colspan");
							}
							return colIndex;
						}

						function findColumn(rowElement, columnIndex) {
							var c = 0;
							var r = 0;
							each(rowElement.children, function(cell, i) {
								c = c + getSpanVal(cell, "colspan");
								r = i;
								if (c > columnIndex)
									return false;
							});
							return r;
						}

						function moveCursorToRow(ed, node, row, upBool) {
							var srcColumnIndex = columnIndex(ed.dom.getParent(node, 'td,th'));
							var tgtColumnIndex = findColumn(row, srcColumnIndex);
							var tgtNode = row.childNodes[tgtColumnIndex];
							var rowCellTarget = getChildForDirection(tgtNode, upBool);
							moveCursorToStartOfElement(rowCellTarget || tgtNode);
						}

						function shouldFixCaret(preBrowserNode) {
							var newNode = ed.selection.getNode();
							var newParent = ed.dom.getParent(newNode, 'td,th');
							var oldParent = ed.dom.getParent(preBrowserNode, 'td,th');
							return newParent && newParent !== oldParent && checkSameParentTable(newParent, oldParent)
						}

						function checkSameParentTable(nodeOne, NodeTwo) {
							return ed.dom.getParent(nodeOne, 'TABLE') === ed.dom.getParent(NodeTwo, 'TABLE');
						}

						if (isVerticalMovement() && isInTable(ed)) {
							var preBrowserNode = ed.selection.getNode();
							setTimeout(function() {
								if (shouldFixCaret(preBrowserNode)) {
									handle(!e.shiftKey && key === VK.UP, preBrowserNode, e);
								}
							}, 0);
						}
					}

					ed.onKeyDown.add(moveSelection);
				}
								
				// Fixes an issue on Gecko where it's impossible to place the caret behind a table
				// This fix will force a paragraph element after the table but only when the forced_root_block setting is enabled
				if (!tinymce.isIE) {
					function fixTableCaretPos() {
						var last;

						// Skip empty text nodes form the end
						for (last = ed.getBody().lastChild; last && last.nodeType == 3 && !last.nodeValue.length; last = last.previousSibling) ;

						if (last && last.nodeName == 'TABLE')
							ed.dom.add(ed.getBody(), 'p', null, '<br mce_bogus="1" />');
					};

					// Fixes an bug where it's impossible to place the caret before a table in Gecko
					// this fix solves it by detecting when the caret is at the beginning of such a table
					// and then manually moves the caret infront of the table
					if (tinymce.isGecko) {
						ed.onKeyDown.add(function(ed, e) {
							var rng, table, dom = ed.dom;

							// On gecko it's not possible to place the caret before a table
							if (e.keyCode == 37 || e.keyCode == 38) {
								rng = ed.selection.getRng();
								table = dom.getParent(rng.startContainer, 'table');

								if (table && ed.getBody().firstChild == table) {
									if (isAtStart(rng, table)) {
										rng = dom.createRng();

										rng.setStartBefore(table);
										rng.setEndBefore(table);

										ed.selection.setRng(rng);

										e.preventDefault();
									}
								}
							}
						});
					}

					ed.onKeyUp.add(fixTableCaretPos);
					ed.onSetContent.add(fixTableCaretPos);
					ed.onVisualAid.add(fixTableCaretPos);

					ed.onPreProcess.add(function(ed, o) {
						var last = o.node.lastChild;

						if (last && last.childNodes.length == 1 && last.firstChild.nodeName == 'BR')
							ed.dom.remove(last);
					});

					fixTableCaretPos();
					ed.startContent = ed.getContent({format : 'raw'});
				}
			});

			// Register action commands
			each({
				mceTableSplitCells : function(grid) {
					grid.split();
				},

				mceTableMergeCells : function(grid) {
					var rowSpan, colSpan, cell;

					cell = ed.dom.getParent(ed.selection.getNode(), 'th,td');
					if (cell) {
						rowSpan = cell.rowSpan;
						colSpan = cell.colSpan;
					}

					if (!ed.dom.select('td.mceSelected,th.mceSelected').length) {
						winMan.open({
							url : url + '/merge_cells.htm',
							width : 240 + parseInt(ed.getLang('table.merge_cells_delta_width', 0)),
							height : 110 + parseInt(ed.getLang('table.merge_cells_delta_height', 0)),
							inline : 1
						}, {
							rows : rowSpan,
							cols : colSpan,
							onaction : function(data) {
								grid.merge(cell, data.cols, data.rows);
							},
							plugin_url : url
						});
					} else
						grid.merge();
				},

				mceTableInsertRowBefore : function(grid) {
					grid.insertRow(true);
				},

				mceTableInsertRowAfter : function(grid) {
					grid.insertRow();
				},

				mceTableInsertColBefore : function(grid) {
					grid.insertCol(true);
				},

				mceTableInsertColAfter : function(grid) {
					grid.insertCol();
				},

				mceTableDeleteCol : function(grid) {
					grid.deleteCols();
				},

				mceTableDeleteRow : function(grid) {
					grid.deleteRows();
				},

				mceTableCutRow : function(grid) {
					clipboardRows = grid.cutRows();
				},

				mceTableCopyRow : function(grid) {
					clipboardRows = grid.copyRows();
				},

				mceTablePasteRowBefore : function(grid) {
					grid.pasteRows(clipboardRows, true);
				},

				mceTablePasteRowAfter : function(grid) {
					grid.pasteRows(clipboardRows);
				},

				mceTableDelete : function(grid) {
					grid.deleteTable();
				}
			}, function(func, name) {
				ed.addCommand(name, function() {
					var grid = createTableGrid();

					if (grid) {
						func(grid);
						ed.execCommand('mceRepaint');
						cleanup();
					}
				});
			});

			// Register dialog commands
			each({
				mceInsertTable : function(val) {
					winMan.open({
						url : url + '/table.htm',
						width : 400 + parseInt(ed.getLang('table.table_delta_width', 0)),
						height : 320 + parseInt(ed.getLang('table.table_delta_height', 0)),
						inline : 1
					}, {
						plugin_url : url,
						action : val ? val.action : 0
					});
				},

				mceTableRowProps : function() {
					winMan.open({
						url : url + '/row.htm',
						width : 400 + parseInt(ed.getLang('table.rowprops_delta_width', 0)),
						height : 295 + parseInt(ed.getLang('table.rowprops_delta_height', 0)),
						inline : 1
					}, {
						plugin_url : url
					});
				},

				mceTableCellProps : function() {
					winMan.open({
						url : url + '/cell.htm',
						width : 400 + parseInt(ed.getLang('table.cellprops_delta_width', 0)),
						height : 295 + parseInt(ed.getLang('table.cellprops_delta_height', 0)),
						inline : 1
					}, {
						plugin_url : url
					});
				}
			}, function(func, name) {
				ed.addCommand(name, function(ui, val) {
					func(val);
				});
			});
		}
	});

	// Register plugin
	tinymce.PluginManager.add('table', tinymce.plugins.TablePlugin);
})(tinymce);