Bug 169997 [CellEditors] TableViewer doesn't activate TextCellEditor consistently
A TextCellEditor is not activated consistently in a TableViewer if the cell clicked is not in the currently selected row. Running the sample application in a debugger, the bounds reported for the table item appears to be incorrect for the column when the row is not selected. This behaviour can be observed by setting a breakpoint at TableEditorImpl.java line 135 (the if statement doesn't return true unless the row is selected due to the bounds being incorrect): if (bounds.contains(event.x, event.y)) {
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ColumnViewer.java
* <code>null</code> if there is no cell at that location
	 *
	 * @param point
	 *            the widget-relative coordinates
	 * @return the cell or <code>null</code> if no cell is found at the given
	 *         point
	 *         
	 * @since 3.4
	 */
	public ViewerCell getCell(Point point) {
		ViewerRow row = getViewerRow(point);
		if (row != null) {
			return row.getCell(point);
		}
		return null;
	}
	/**
	 * Returns the viewer row at the given widget-relative coordinates.
	 *
	 * @param point
	 *            the widget-relative coordinates of the viewer row
	 * @return ViewerRow the row or <code>null</code> if no row is found at
	 *         the given coordinates
	 */
	protected ViewerRow getViewerRow(Point point) {
		Item item = getItemAt(point);
		if (item != null) {
			return getViewerRowFromItem(item);
		}
		return null;