Bug 28269 type hierarchy makes work much slower even though it's invisible
20021210 i had a big type hierarchy open but put in the background - behind the package explorer i added 1 type to the workspace boom - tyhe whole thing froze for 2 minutes because the type hierarchy was doing a lot of work that i did not ask for and no busy cursor it makes it quite impossible to work if you have a type hierarchy open anywhere
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
ToolBar methodViewerToolBar= new ToolBar(fMethodViewerViewForm, SWT.FLAT | SWT.WRAP);
		fMethodViewerViewForm.setTopCenter(methodViewerToolBar);
		
		
		fNoHierarchyShownLabel= new Label(fPagebook, SWT.TOP + SWT.LEFT + SWT.WRAP);
		fNoHierarchyShownLabel.setText(TypeHierarchyMessages.getString("TypeHierarchyViewPart.empty")); 	
		
		MenuManager menu= new MenuManager();
		menu.add(fFocusOnTypeAction);
		fNoHierarchyShownLabel.setMenu(menu.createContextMenu(fNoHierarchyShownLabel));
		
		fPagebook.showPage(fNoHierarchyShownLabel);
		int orientation;
		try {
			orientation= fDialogSettings.getInt(DIALOGSTORE_VIEWORIENTATION);
			if (orientation < 0 || orientation > 2) {
				orientation= VIEW_ORIENTATION_VERTICAL;
			}
		} catch (NumberFormatException e) {
			orientation= VIEW_ORIENTATION_VERTICAL;
		}
		
		fCurrentOrientation= -1;
		
		setOrientation(orientation);
		
		
		IActionBars actionBars= getViewSite().getActionBars();
		IMenuManager viewMenu= actionBars.getMenuManager();
		for (int i= 0; i < fToggleOrientationActions.length; i++) {