Bug 26261 Confusion after setting hover prefs due to disabled hover - remove hover toggle
20021113 i set the 'shift' hover to source - nothing happens on hovering with shift down
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaOutlinePage.java
}
	
	private void doPropertyChange(PropertyChangeEvent event) {
		if (fOutlineViewer != null) {
			if (PreferenceConstants.APPEARANCE_MEMBER_SORT_ORDER.equals(event.getProperty())) {
				fOutlineViewer.refresh();
			}
		}
	}	
	
	/*
	 * @see ISelectionProvider#addSelectionChangedListener(ISelectionChangedListener)
	 */
	public void addSelectionChangedListener(ISelectionChangedListener listener) {
		if (fOutlineViewer != null)
			fOutlineViewer.addSelectionChangedListener(listener);
		else
			fSelectionChangedListeners.add(listener);
	}
	
	/*
	 * @see ISelectionProvider#removeSelectionChangedListener(ISelectionChangedListener)
	 */
	public void removeSelectionChangedListener(ISelectionChangedListener listener) {
		if (fOutlineViewer != null)
			fOutlineViewer.removeSelectionChangedListener(listener);
		else
			fSelectionChangedListeners.remove(listener);
	}