Bug 12053 Allow mutli selection for all browsers
This should clear downstream
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingPart.java
input= getSite().getPage().getInput();
			if (!(input instanceof IJavaElement) && input instanceof IAdaptable)
				input= ((IAdaptable)input).getAdapter(IJavaElement.class);
			
			else
				return;
		}
		if (findElementToSelect((IJavaElement)input) != null)
			adjustInputAndSetSelection((IJavaElement)input);
	}
	final protected void setHelp() {
		JavaUIHelp.setHelp(fViewer, getHelpContextId());
	}
	/**
	 * Returns the context ID for the Help system
	 * 
	 * @return	the string used as ID for the Help context
	 */
	abstract protected String getHelpContextId();
	/**
	 * Adds additional listeners to this view.
	 */
	protected void hookViewerListeners() {
		fViewer.addSelectionChangedListener(new ISelectionChangedListener() {
			public void selectionChanged(SelectionChangedEvent event) {
				if (!fProcessSelectionEvents)
					return;
				if (JavaBrowsingPreferencePage.openEditorOnSingleClick())
					new ShowInEditorAction().run(event.getSelection(), getSite().getPage());