Bug 5677 Hierarchy outline has empty space
I opened a hierarchy view on IActionDelegate. Selected a few of the subinterfaces, changed the expansion state of the tree. Then, no matter which item I selected in the top window (the hierarchy tree), the bottom window (the outline table) always had exactly four empty rows before the first item was listed.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/MethodsViewer.java
fFilter= new MethodsViewerFilter();
		
		
		String title= TypeHierarchyMessages.getString("MethodsViewer.hide_fields.label"); 
		String helpContext= IJavaHelpContextIds.FILTER_FIELDS_ACTION;
		MethodsViewerFilterAction hideFields= new MethodsViewerFilterAction(this, title, MethodsViewerFilter.FILTER_FIELDS, helpContext, false);
		hideFields.setDescription(TypeHierarchyMessages.getString("MethodsViewer.hide_fields.description")); 
		hideFields.setToolTipChecked(TypeHierarchyMessages.getString("MethodsViewer.hide_fields.tooltip.checked")); 
		hideFields.setToolTipUnchecked(TypeHierarchyMessages.getString("MethodsViewer.hide_fields.tooltip.unchecked")); 
		JavaPluginImages.setLocalImageDescriptors(hideFields, "fields_co.gif"); 
		
		
		title= TypeHierarchyMessages.getString("MethodsViewer.hide_static.label"); 
		helpContext= IJavaHelpContextIds.FILTER_STATIC_ACTION;
		MethodsViewerFilterAction hideStatic= new MethodsViewerFilterAction(this, title, MethodsViewerFilter.FILTER_STATIC, helpContext, false);
		hideStatic.setDescription(TypeHierarchyMessages.getString("MethodsViewer.hide_static.description")); 
		hideStatic.setToolTipChecked(TypeHierarchyMessages.getString("MethodsViewer.hide_static.tooltip.checked")); 
		hideStatic.setToolTipUnchecked(TypeHierarchyMessages.getString("MethodsViewer.hide_static.tooltip.unchecked")); 
		JavaPluginImages.setLocalImageDescriptors(hideStatic, "static_co.gif"); 
		
		
		title= TypeHierarchyMessages.getString("MethodsViewer.hide_nonpublic.label"); 
		helpContext= IJavaHelpContextIds.FILTER_PUBLIC_ACTION;
		MethodsViewerFilterAction hideNonPublic= new MethodsViewerFilterAction(this, title, MethodsViewerFilter.FILTER_NONPUBLIC, helpContext, false);
		hideNonPublic.setDescription(TypeHierarchyMessages.getString("MethodsViewer.hide_nonpublic.description")); 
		hideNonPublic.setToolTipChecked(TypeHierarchyMessages.getString("MethodsViewer.hide_nonpublic.tooltip.checked")); 
		hideNonPublic.setToolTipUnchecked(TypeHierarchyMessages.getString("MethodsViewer.hide_nonpublic.tooltip.unchecked")); 
		JavaPluginImages.setLocalImageDescriptors(hideNonPublic, "public_co.gif");