Bug 30412 ClassCastException selecting package in java browsing perspective
Build: I20030122 I have the java browsing perspective open. I selected a package in the packages view, and there was an error trying to open the type browsing view. I can't seem to reproduce it, but hopefully the stack trace will be useful. The result was that the types view could not be initialized (the view contained an error message saying it could not be created.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingPart.java
import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility;
import org.eclipse.jdt.internal.ui.javaeditor.IClassFileEditorInput;
import org.eclipse.jdt.internal.ui.javaeditor.JarEntryEditorInput;
import org.eclipse.jdt.internal.ui.packageview.SelectionTransferDragAdapter;
import org.eclipse.jdt.internal.ui.packageview.SelectionTransferDropAdapter;
import org.eclipse.jdt.internal.ui.search.SearchUtil;
import org.eclipse.jdt.internal.ui.util.JavaUIHelp;
import org.eclipse.jdt.internal.ui.viewsupport.AppearanceAwareLabelProvider;
import org.eclipse.jdt.internal.ui.viewsupport.DecoratingJavaLabelProvider;
import org.eclipse.jdt.internal.ui.viewsupport.IViewPartInputProvider;
import org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider;
import org.eclipse.jdt.internal.ui.viewsupport.JavaElementLabels;
import org.eclipse.jdt.internal.ui.viewsupport.JavaUILabelProvider;
import org.eclipse.jdt.internal.ui.viewsupport.ProblemTableViewer;
import org.eclipse.jdt.internal.ui.viewsupport.StatusBarUpdater;
import org.eclipse.jdt.internal.ui.workingsets.WorkingSetFilterActionGroup;
abstract class JavaBrowsingPart extends ViewPart implements IMenuListener, ISelectionListener, IViewPartInputProvider {
	private static final String TAG_SELECTED_ELEMENTS= "selectedElements"; 
	private static final String TAG_SELECTED_ELEMENT= "selectedElement"; 
	private static final String TAG_SELECTED_ELEMENT_PATH= "selectedElementPath"; 
	private JavaUILabelProvider fLabelProvider;
	private ILabelProvider fTitleProvider;
	private StructuredViewer fViewer;
	private IMemento fMemento;
	private JavaElementTypeComparator fTypeComparator;
	
	
	private WorkingSetFilterActionGroup fWorkingSetFilterActionGroup;
	private boolean fHasWorkingSetFilter= true;
	private boolean fHasCustomFilter= true;