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
setElementChecked(element, checkCount > 0);
			setElementGrayed(element, checkCount != 0 && checkCount != children.length);
		}
		/**
		 * Determines whether the specified element is checked.
		 * 
		 * @param element
		 *            the element
		 * @param checked
		 *            <code>true</code> to render it checked,
		 *            <code>false</code> otherwise
		 */
		private void setElementChecked(final Object element, final boolean checked) {
			final Widget widget= RefactoringHistoryTreeViewer.this.findItem(element);
			if (widget instanceof TreeItem) {
				final TreeItem item= (TreeItem) widget;
				item.setChecked(checked);
			}
		}
		/**
		 * Determines whether the specified element is grayed.
		 * 
		 * @param element
		 *            the element
		 * @param grayed
		 *            <code>true</code> to render it grayed,
		 *            <code>false</code> otherwise
		 */
		private void setElementGrayed(final Object element, final boolean grayed) {
			final Widget widget= RefactoringHistoryTreeViewer.this.findItem(element);