Bug 9570 [Java Browsing] Types View not updated on deletion
1) Select a method in a type, i.e. all viewers are populated, editor is visible 2) Deactivate linking between active editor and navigator in workbench preferences 3) Deactivate auto build 3) Prespective>Show View>Navigator 4) Pin Navigator 5) Select the file of the previously selected method 6) Context Menu>Delete -> Method View flushed, Editor closed -> Type still visible in Types View ->Selecting Type possible and results in small red square in Methods View
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingPart.java
fDeleteAction= new DeleteAction(provider);
		fRefreshAction= new RefreshAction(getShell());
		
		IActionBars actionService= getViewSite().getActionBars();
		actionService.setGlobalActionHandler(IWorkbenchActionConstants.DELETE, fDeleteAction);
	}
	/**
	 * Returns the shell to use for opening dialogs.
	 * Used in this class, and in the actions.
	 */
	private Shell getShell() {
		return fViewer.getControl().getShell();
	}
	protected final Display getDisplay() {
		return fViewer.getControl().getDisplay();
	}	
	/**
	 * Answers if the given <code>element</code> is a valid
	 * input for this part.
	 * 
	 * @param 	element	the object to test
	 * @return	<true> if the given element is a valid input
	 */
	abstract protected boolean isValidInput(Object element);
	/**
	 * Answers if the given <code>element</code> is a valid
	 * element for this part.
	 * 
	 * @param 	element	the object to test