Bug 125874 [create script] 'Select All' doesn't work
20060131 - Create script - Press 'Select All', nothing happens
org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/history/RefactoringHistoryControl.java
if (widget instanceof TreeItem) {
				final TreeItem item= (TreeItem) widget;
				item.setGrayed(grayed);
			}
		}
		/**
		 * Determines whether the subtree of the specified element is rendered
		 * checked.
		 * 
		 * @param element
		 *            the element specifying the subtree
		 * @param checked
		 *            <code>true</code> to render the subtree checked,
		 *            <code>false</code> otherwise
		 */
		private void setSubTreeChecked(final Object element, final boolean checked) {
			setElementChecked(element, checked);
			final Object[] children= getChildren(element);
			for (int index= 0; index < children.length; index++) {
				setSubTreeChecked(children[index], checked);
			}
		}
		/**
		 * Determines whether the subtree of the specified element is rendered
		 * grayed.
		 * 
		 * @param element
		 *            the element specifying the subtree
		 * @param grayed
		 *            <code>true</code> to render the subtree grayed,