Bug 50768 [navigation] outline popup cannot be scrolled
I20040128 If I open the content outline popup on a class with a large number of methods (such as core.internal.resources.Workspace.java), it fills the height of the screen, and there is no way to scroll down in the list (no scrollbars, and arrow down does not cause it to scroll).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/text/JavaSourceViewerConfiguration.java
* Preference key used to look up display tab width.
	 * 
	 * @since 2.0
	 */
	public final static String PREFERENCE_TAB_WIDTH= PreferenceConstants.EDITOR_TAB_WIDTH;
	/** 
	 * Preference key for inserting spaces rather than tabs.
	 * 
	 * @since 2.0
	 */
	public final static String SPACES_FOR_TABS= PreferenceConstants.EDITOR_SPACES_FOR_TABS;
	
	private JavaTextTools fJavaTextTools;
	private ITextEditor fTextEditor;
	private String fDocumentPartitioning;
	
	/**
	 * Creates a new Java source viewer configuration for viewers in the given editor 
	 * using the given Java tools and the specified document partitioning.
	 *
	 * @param tools the Java text tools to be used
	 * @param editor the editor in which the configured viewer(s) will reside
	 * @param partitioning the document partitioning for this configuration
	 * @see JavaTextTools
	 * @since 3.0
	 */
	public JavaSourceViewerConfiguration(JavaTextTools tools, ITextEditor editor, String partitioning) {
		fJavaTextTools= tools;
		fTextEditor= editor;
		fDocumentPartitioning= partitioning;