/**
* @param container A block level element containing the start of the given range.
* @param range A DOM range.
* @return true if the start of the given range is at the beginning of its block level container.
*/
protected boolean isAtStart(Node container, Range range) {
if (!container.hasChildNodes()) {
return true;
}
if (range.getStartOffset() > 0) {
return false;
}
return domUtils.getFirstLeaf(container) == domUtils.getFirstLeaf(range.getStartContainer());
}
/**
* Tab key has been pressed inside a table cell.
*
* @param event the native event that was fired
* @param cell The table cell in which the tab key has been pressed.
*/
protected void onTabInTableCell(Event event, TableCellElement cell) {
Node nextCell = event.getShiftKey() ? cell.getPreviousCell() : cell.getNextCell();
if (nextCell == null) {
if (event.getShiftKey()) {
return;
} else {
getTextArea().getCommandManager().execute(new Command("insertrowafter"));
nextCell = cell.getNextCell();
}
}
Selection selection = getTextArea().getDocument().getSelection();
Range range = selection.getRangeAt(0);
// Place the caret at the beginning of the next cell.
Node leaf = domUtils.getFirstLeaf(nextCell);
if (leaf == nextCell || leaf.getNodeType() == Node.TEXT_NODE) {
range.setStart(leaf, 0);
} else {
range.setStartBefore(leaf);
}
range.collapse(true);
selection.removeAllRanges();
selection.addRange(range);
}
