Bug 184877 [CommonNavigator] No F1 help for Project Explorer view
Build: I20070501-0010 1) Open the Project Explorer view 2) Hit F1 -> There is no help available for this view.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonNavigator.java
if (commonViewer != null) {
			commonViewer.getTree().setFocus();
		}
	}
	/**
	 * <p>
	 * Set the selection to the Common Navigator tree, and expand nodes if
	 * necessary. Use caution when invoking this method as it can cause
	 * Navigator Content Extensions to load, thus causing plugin activation.
	 * </p>
	 * 
	 * @see org.eclipse.ui.part.ISetSelectionTarget#selectReveal(org.eclipse.jface.viewers.ISelection)
	 */
	public void selectReveal(ISelection selection) {
		if (commonViewer != null) {
			if(selection instanceof IStructuredSelection) {
				Object[] newSelection = ((IStructuredSelection)selection).toArray();
				Object[] expandedElements = commonViewer.getExpandedElements();
				Object[] newExpandedElements = new Object[newSelection.length + expandedElements.length];
				System.arraycopy(expandedElements, 0, newExpandedElements, 0, expandedElements.length);
				System.arraycopy(newSelection, 0, newExpandedElements, expandedElements.length, newSelection.length);
 				commonViewer.setExpandedElements(newExpandedElements);
			}
			commonViewer.setSelection(selection, true);
		}
	}
	/**
	 * <p>
	 * Linking is handled by an action which listens for
	 * changes to the {@link CommonNavigator#IS_LINKING_ENABLED_PROPERTY}.