Bug 161425 [Viewers] TableTreeViewer => EditingSupport broken
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableTreeViewer.java
tableEditorImpl.handleMouseDown(e);
			}
		});
	}
	/**
	 * Returns whether there is an active cell editor.
	 * 
	 * @return <code>true</code> if there is an active cell editor, and
	 *         <code>false</code> otherwise
	 */
	public boolean isCellEditorActive() {
		return tableEditorImpl.isCellEditorActive();
	}
	/*
	 * (non-Javadoc) Method declared in AbstractTreeViewer.
	 */
	protected Item newItem(Widget parent, int flags, int ix) {
		TableTreeItem item;
		if (ix >= 0) {
			if (parent instanceof TableTreeItem) {
				item = new TableTreeItem((TableTreeItem) parent, flags, ix);
			} else {
				item = new TableTreeItem((TableTree) parent, flags, ix);
			}
		} else {
			if (parent instanceof TableTreeItem) {
				item = new TableTreeItem((TableTreeItem) parent, flags);
			} else {
				item = new TableTreeItem((TableTree) parent, flags);
			}