/**
* CellSelection.js
*
* Copyright, Moxiecode Systems AB
* Released under LGPL License.
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/**
* This class handles table cell selection by faking it using a css class that gets applied
* to cells when dragging the mouse from one cell to another.
*
* @class tinymce.tableplugin.CellSelection
* @private
*/
define("tinymce/tableplugin/CellSelection", [
"tinymce/tableplugin/TableGrid",
"tinymce/dom/TreeWalker",
"tinymce/util/Tools"
], function(TableGrid, TreeWalker, Tools) {
return function(editor) {
var dom = editor.dom, tableGrid, startCell, startTable, hasCellSelection = true;
function clear() {
// Restore selection possibilities
editor.getBody().style.webkitUserSelect = '';
if (hasCellSelection) {
editor.dom.removeClass(
editor.dom.select('td.mce-item-selected,th.mce-item-selected'),
'mce-item-selected'
);
hasCellSelection = false;
}
}
function cellSelectionHandler(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 = new TableGrid(editor, table);
tableGrid.setStartCell(startCell);
editor.getBody().style.webkitUserSelect = 'none';
}
tableGrid.setEndCell(target);
hasCellSelection = true;
}
// Remove current selection
sel = editor.selection.getSel();
try {
if (sel.removeAllRanges) {
sel.removeAllRanges();
} else {
sel.empty();
}
} catch (ex) {
// IE9 might throw errors here
}
e.preventDefault();
}
}
// Add cell selection logic
editor.on('MouseDown', function(e) {
if (e.button != 2) {
clear();
startCell = dom.getParent(e.target, 'td,th');
startTable = dom.getParent(startCell, 'table');
}
});
dom.bind(editor.getDoc(), 'mouseover', cellSelectionHandler);
editor.on('remove', function() {
dom.unbind(editor.getDoc(), 'mouseover', cellSelectionHandler);
});
editor.on('MouseUp', function() {
var rng, sel = editor.selection, selectedCells, walker, node, lastNode, endNode;
function setPoint(node, start) {
var walker = new TreeWalker(node, node);
do {
// Text node
if (node.nodeType == 3 && Tools.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())));
}
// Move selection to startCell
if (startCell) {
if (tableGrid) {
editor.getBody().style.webkitUserSelect = '';
}
// Try to expand text selection as much as we can only Gecko supports cell selection
selectedCells = dom.select('td.mce-item-selected,th.mce-item-selected');
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 TreeWalker(node, dom.getParent(selectedCells[0], 'table'));
do {
if (node.nodeName == 'TD' || node.nodeName == 'TH') {
if (!dom.hasClass(node, 'mce-item-selected')) {
break;
}
lastNode = node;
}
} while ((node = walker.next()));
setPoint(lastNode);
sel.setRng(rng);
}
editor.nodeChanged();
startCell = tableGrid = startTable = null;
}
});
editor.on('KeyUp', function() {
clear();
});
return {
clear: clear
};
};
});