From 8d9f8b03aaebc45028f45a66ee8adf7bbec3e25c Mon Sep 17 00:00:00 2001
From: Markus Schorn <markus.schorn@windriver.com>
Date: Tue, 16 Jan 2007 10:44:02 +0000
Subject: [PATCH] Type Hierarchy: initial version as work in progress

---
 core/org.eclipse.cdt.ui/plugin.properties     |   3 +-
 core/org.eclipse.cdt.ui/plugin.xml            |   6 +
 .../cdt/internal/ui/CPluginImages.java        |  18 +-
 .../internal/ui/callhierarchy/CHQueries.java  | 151 +--
 .../ui/callhierarchy/CallHierarchyUI.java     |  32 +-
 .../editor/ICEditorActionDefinitionIds.java   |   5 +-
 .../WorkInProgressPreferencePage.java         |   4 +-
 .../internal/ui/typehierarchy/Messages.java   |  58 ++
 .../OpenTypeHierarchyAction.java              |  84 ++
 .../ui/typehierarchy/THContentProvider.java   |  59 ++
 .../typehierarchy/THDropTargetListener.java   | 105 +++
 .../internal/ui/typehierarchy/THGraph.java    |  95 ++
 .../ui/typehierarchy/THGraphEdge.java         |  30 +
 .../ui/typehierarchy/THGraphNode.java         |  70 ++
 .../ui/typehierarchy/THHierarchyModel.java    | 366 ++++++++
 .../ui/typehierarchy/THHistoryAction.java     |  59 ++
 .../THHistoryDropDownAction.java              | 105 +++
 .../ui/typehierarchy/THHistoryListAction.java | 182 ++++
 .../ui/typehierarchy/THLabelProvider.java     | 122 +++
 .../THMethodContentProvider.java              |  38 +
 .../cdt/internal/ui/typehierarchy/THNode.java | 119 +++
 .../ui/typehierarchy/THSchedulingRule.java    |  25 +
 .../internal/ui/typehierarchy/THViewPart.java | 863 ++++++++++++++++++
 .../ui/typehierarchy/TypeHierarchyUI.java     | 219 +++++
 .../ui/typehierarchy/messages.properties      |  43 +
 .../ui/viewsupport/CElementLabels.java        |  13 +-
 .../cdt/internal/ui/viewsupport/IndexUI.java  | 191 ++++
 .../SelectionProviderMediator.java            | 108 +++
 .../src/org/eclipse/cdt/ui/CUIPlugin.java     |   9 +-
 .../cdt/ui/actions/OpenViewActionGroup.java   |  50 +-
 30 files changed, 3027 insertions(+), 205 deletions(-)
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/Messages.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/OpenTypeHierarchyAction.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THContentProvider.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THDropTargetListener.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraph.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraphEdge.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraphNode.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHierarchyModel.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryAction.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryDropDownAction.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryListAction.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THLabelProvider.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THMethodContentProvider.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THNode.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THSchedulingRule.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THViewPart.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/TypeHierarchyUI.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/messages.properties
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/IndexUI.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/SelectionProviderMediator.java

diff --git a/core/org.eclipse.cdt.ui/plugin.properties b/core/org.eclipse.cdt.ui/plugin.properties
index 3712e05aa0b..50ed106906b 100644
--- a/core/org.eclipse.cdt.ui/plugin.properties
+++ b/core/org.eclipse.cdt.ui/plugin.properties
@@ -1,5 +1,5 @@
 ###############################################################################
-# Copyright (c) 2003, 2006 IBM Corporation and others.
+# Copyright (c) 2003, 2007 IBM Corporation and others.
 # All rights reserved. This program and the accompanying materials
 # are made available under the terms of the Eclipse Public License v1.0
 # which accompanies this distribution, and is available at
@@ -351,6 +351,7 @@ indexerPage.name = Indexer Page
 proposalFilter.name = Code Completion Proposal Filter
 includeBrowser.name = Include Browser
 callHierarchy.name = Call Hierarchy
+typeHierarchy.name = Type Hierarchy
 cSearchPage.name = CSearchPage
 
 # dummy label (not displayed)
diff --git a/core/org.eclipse.cdt.ui/plugin.xml b/core/org.eclipse.cdt.ui/plugin.xml
index 880138eb29a..a56a1c36c63 100644
--- a/core/org.eclipse.cdt.ui/plugin.xml
+++ b/core/org.eclipse.cdt.ui/plugin.xml
@@ -261,6 +261,12 @@
             icon="icons/view16/call_hierarchy.gif"
             id="org.eclipse.cdt.ui.callHierarchy"
             name="%callHierarchy.name"/>
+      <view
+            category="org.eclipse.cdt.ui.views"
+            class="org.eclipse.cdt.internal.ui.typehierarchy.THViewPart"
+            icon="icons/view16/class_hi.gif"
+            id="org.eclipse.cdt.ui.typeHierarchy"
+            name="%typeHierarchy.name"/>
       <!--category
             name="%CBrowsing.viewCategoryName"
             id="org.eclipse.cdt.ui.c.browsing">
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/CPluginImages.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/CPluginImages.java
index afd04327a06..28282c939b9 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/CPluginImages.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/CPluginImages.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2006 IBM Corporation and others.
+ * Copyright (c) 2005, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -204,9 +204,21 @@ public class CPluginImages {
     public static final String IMG_ACTION_HIDE_MACROS = NAME_PREFIX + "filterDefines.gif"; //$NON-NLS-1$
     public static final String IMG_SHOW_NEXT= NAME_PREFIX + "search_next.gif"; //$NON-NLS-1$
     public static final String IMG_SHOW_PREV= NAME_PREFIX + "search_prev.gif"; //$NON-NLS-1$
+
     public static final String IMG_REFRESH= NAME_PREFIX + "refresh_nav.gif"; //$NON-NLS-1$
-    
-    
+    public static final String IMG_LCL_CANCEL= NAME_PREFIX + "progress_stop.gif"; //$NON-NLS-1$
+
+    // view orientation
+	public static final String IMG_LCL_HORIZONTAL_ORIENTATION= NAME_PREFIX + "th_horizontal.gif"; //$NON-NLS-1$
+	public static final String IMG_LCL_VERTICAL_ORIENTATION= NAME_PREFIX + "th_vertical.gif"; //$NON-NLS-1$
+	public static final String IMG_LCL_AUTOMATIC_ORIENTATION= NAME_PREFIX + "th_automatic.gif"; //$NON-NLS-1$
+	public static final String IMG_LCL_SINGLE_ORIENTATION= NAME_PREFIX + "th_single.gif"; //$NON-NLS-1$
+
+    // hierarchy kind
+	public static final String IMG_LCL_TYPE_HIERARCHY= NAME_PREFIX + "hierarchy_co.gif"; //$NON-NLS-1$
+	public static final String IMG_LCL_SUB_TYPE_HIERARCHY= NAME_PREFIX + "sub_co.gif"; //$NON-NLS-1$
+	public static final String IMG_LCL_SUPER_TYPE_HIERARCHY= NAME_PREFIX + "super_co.gif"; //$NON-NLS-1$
+
 	public static final ImageDescriptor DESC_OBJS_TEMPLATE= createManaged(T_OBJ, IMG_OBJS_TEMPLATE);
 	
 	public static final ImageDescriptor DESC_OVR_STATIC= create(T_OVR, "static_co.gif"); //$NON-NLS-1$
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/callhierarchy/CHQueries.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/callhierarchy/CHQueries.java
index 7cacd4b6b7f..7afe74e57a6 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/callhierarchy/CHQueries.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/callhierarchy/CHQueries.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2006 Wind River Systems, Inc. and others.
+ * Copyright (c) 2006, 2007 Wind River Systems, Inc. and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -11,39 +11,18 @@
 
 package org.eclipse.cdt.internal.ui.callhierarchy;
 
-import java.util.ArrayList;
-
-import org.eclipse.core.resources.IFile;
 import org.eclipse.core.runtime.CoreException;
-import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IProgressMonitor;
-import org.eclipse.core.runtime.Path;
-import org.eclipse.jface.text.IRegion;
-import org.eclipse.jface.text.Region;
 
-import org.eclipse.cdt.core.CCorePlugin;
-import org.eclipse.cdt.core.IPositionConverter;
-import org.eclipse.cdt.core.dom.IName;
 import org.eclipse.cdt.core.dom.ast.DOMException;
-import org.eclipse.cdt.core.dom.ast.IASTFileLocation;
-import org.eclipse.cdt.core.dom.ast.IASTName;
 import org.eclipse.cdt.core.dom.ast.IBinding;
 import org.eclipse.cdt.core.index.IIndex;
-import org.eclipse.cdt.core.index.IIndexBinding;
-import org.eclipse.cdt.core.index.IIndexFile;
-import org.eclipse.cdt.core.index.IIndexFileLocation;
 import org.eclipse.cdt.core.index.IIndexName;
-import org.eclipse.cdt.core.index.IndexLocationFactory;
-import org.eclipse.cdt.core.model.CModelException;
 import org.eclipse.cdt.core.model.ICElement;
 import org.eclipse.cdt.core.model.ICProject;
-import org.eclipse.cdt.core.model.ISourceRange;
 import org.eclipse.cdt.core.model.ISourceReference;
-import org.eclipse.cdt.core.model.ITranslationUnit;
-import org.eclipse.cdt.ui.CUIPlugin;
 
-import org.eclipse.cdt.internal.core.model.ext.CElementHandleFactory;
-import org.eclipse.cdt.internal.corext.util.CModelUtil;
+import org.eclipse.cdt.internal.ui.viewsupport.IndexUI;
 
 
 /**
@@ -51,7 +30,6 @@ import org.eclipse.cdt.internal.corext.util.CModelUtil;
  * @since 4.0
  */
 public class CHQueries {
-	private static final ICElement[] EMPTY_ELEMENTS = new ICElement[0];
 	private static final CHNode[] EMPTY_NODES= new CHNode[0];
 	
     private CHQueries() {}
@@ -67,51 +45,12 @@ public class CHQueries {
 		if (! (callee instanceof ISourceReference)) {
 			return EMPTY_NODES;
 		}
-		IBinding calleeBinding= elementToBinding(index, callee);
+		IBinding calleeBinding= IndexUI.elementToBinding(index, callee);
 		findCalledBy(index, calleeBinding, callee.getCProject(), result);	
 		
 		return cp.createNodes(node, result);
 	}
 
-	private static IIndexBinding elementToBinding(IIndex index, ICElement element) throws CoreException {
-		IIndexName name= elementToName(index, element);
-		if (name != null) {
-			return index.findBinding(name);
-		}
-		return null;
-	}
-
-	private static IIndexName elementToName(IIndex index, ICElement element) throws CoreException {
-		if (element instanceof ISourceReference) {
-			ISourceReference sf = ((ISourceReference)element);
-			ITranslationUnit tu= sf.getTranslationUnit();
-			if (tu != null) {
-				IIndexFileLocation location= IndexLocationFactory.getIFL(tu);
-				if (location != null) {
-					IIndexFile file= index.getFile(location);
-					if (file != null) {
-						String elementName= element.getElementName();
-						int idx= elementName.lastIndexOf(":")+1; //$NON-NLS-1$
-						ISourceRange pos= sf.getSourceRange();
-						IRegion region= new Region(pos.getIdStartPos()+idx, pos.getIdLength());
-						IPositionConverter converter= CCorePlugin.getPositionTrackerManager().findPositionConverter(tu, file.getTimestamp());
-						if (converter != null) {
-							region= converter.actualToHistoric(region);
-						}
-						IIndexName[] names= file.findNames(region.getOffset(), region.getLength());
-						for (int i = 0; i < names.length; i++) {
-							IIndexName name = names[i];
-							if (!name.isReference() && elementName.endsWith(new String(name.toCharArray()))) {
-								return name;
-							}
-						}
-					}
-				}
-			}
-		}
-		return null;
-	}
-
 	private static void findCalledBy(IIndex index, IBinding callee, ICProject project, CalledByResult result) throws CoreException, DOMException {
 		if (callee != null) {
 			IIndexName[] names= index.findReferences(callee);
@@ -119,7 +58,7 @@ public class CHQueries {
 				IIndexName rname = names[i];
 				IIndexName caller= rname.getEnclosingDefinition();
 				if (caller != null) {
-					ICElement elem= getCElementForName(project, index, caller);
+					ICElement elem= IndexUI.getCElementForName(project, index, caller);
 					if (elem != null) {
 						result.add(elem, rname);
 					} 
@@ -128,16 +67,6 @@ public class CHQueries {
 		}
 	}
 
-	private static ITranslationUnit getTranslationUnit(ICProject cproject, IName name) {
-		IPath path= Path.fromOSString(name.getFileLocation().getFileName());
-		try {
-			return CModelUtil.findTranslationUnitForLocation(path, cproject);
-		} catch (CModelException e) {
-			CUIPlugin.getDefault().log(e);
-			return null;
-		}
-	}
-
 	/**
 	 * Searches for all calls that are made within a given range.
 	 * @throws DOMException 
@@ -145,20 +74,14 @@ public class CHQueries {
 	public static CHNode[] findCalls(CHContentProvider cp, CHNode node, IIndex index, IProgressMonitor pm) throws CoreException, DOMException {
 		ICElement caller= node.getRepresentedDeclaration();
 		CallsToResult result= new CallsToResult();
-		IIndexName callerName= elementToName(index, caller);
+		IIndexName callerName= IndexUI.elementToName(index, caller);
 		if (callerName != null) {
 			IIndexName[] refs= callerName.getEnclosedNames();
 			for (int i = 0; i < refs.length; i++) {
 				IIndexName name = refs[i];
 				IBinding binding= index.findBinding(name);
 				if (CallHierarchyUI.isRelevantForCallHierarchy(binding)) {
-					ICElement[] defs = findAllDefinitions(index, binding);
-					if (defs.length == 0) {
-						ICElement elem = findAnyDeclaration(index, null, binding);
-						if (elem != null) {
-							defs = new ICElement[] { elem };
-						}
-					}
+					ICElement[] defs = IndexUI.findRepresentative(index, binding);
 					if (defs != null && defs.length > 0) {
 						result.add(defs, name);
 					}
@@ -167,66 +90,4 @@ public class CHQueries {
 		}
 		return cp.createNodes(node, result);
 	}
-	
-	public static ICElement[] findAllDefinitions(IIndex index, IBinding binding) throws CoreException, DOMException {
-		if (binding != null) {
-			IIndexName[] defs= index.findDefinitions(binding);
-
-			ArrayList result= new ArrayList();
-			for (int i = 0; i < defs.length; i++) {
-				IIndexName in = defs[i];
-				ICElement definition= getCElementForName(null, index, in);
-				if (definition != null) {
-					result.add(definition);
-				}
-				
-			}
-			return (ICElement[]) result.toArray(new ICElement[result.size()]);
-		}
-		return EMPTY_ELEMENTS;
-	}
-			
-	static ICElement getCElementForName(ICProject preferProject, IIndex index, IASTName declName) throws CoreException, DOMException {
-		assert !declName.isReference();
-		IBinding binding= declName.resolveBinding();
-		if (binding != null) {
-			ITranslationUnit tu= getTranslationUnit(preferProject, declName);
-			if (tu != null) {
-				IFile file= (IFile) tu.getResource();
-				long timestamp= file.getLocalTimeStamp();
-				IASTFileLocation loc= declName.getFileLocation();
-				IRegion region= new Region(loc.getNodeOffset(), loc.getNodeLength());
-				IPositionConverter converter= CCorePlugin.getPositionTrackerManager().findPositionConverter(file, timestamp);
-				if (converter != null) {
-					region= converter.actualToHistoric(region);
-				}
-				return CElementHandleFactory.create(tu, binding, region, timestamp);
-			}
-		}
-		return null;
-	}
-
-	static ICElement getCElementForName(ICProject preferProject, IIndex index, IIndexName declName) throws CoreException, DOMException {
-		assert !declName.isReference();
-		ITranslationUnit tu= getTranslationUnit(preferProject, declName);
-		if (tu != null) {
-			IRegion region= new Region(declName.getNodeOffset(), declName.getNodeLength());
-			long timestamp= declName.getFile().getTimestamp();
-			return CElementHandleFactory.create(tu, index.findBinding(declName), region, timestamp);
-		}
-		return null;
-	}
-
-	public static ICElement findAnyDeclaration(IIndex index, ICProject preferProject, IBinding binding) throws CoreException, DOMException {
-		if (binding != null) {
-			IIndexName[] names= index.findNames(binding, IIndex.FIND_DECLARATIONS);
-			for (int i = 0; i < names.length; i++) {
-				ICElement elem= getCElementForName(preferProject, index, names[i]);
-				if (elem != null) {
-					return elem;
-				}
-			}
-		}
-		return null;
-	}
 }
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/callhierarchy/CallHierarchyUI.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/callhierarchy/CallHierarchyUI.java
index 71aaad33222..c7955ed80d0 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/callhierarchy/CallHierarchyUI.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/callhierarchy/CallHierarchyUI.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2006 Wind River Systems, Inc. and others.
+ * Copyright (c) 2006, 2007 Wind River Systems, Inc. and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -25,7 +25,6 @@ import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.cdt.core.CCorePlugin;
 import org.eclipse.cdt.core.dom.ast.DOMException;
 import org.eclipse.cdt.core.dom.ast.IASTName;
-import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
 import org.eclipse.cdt.core.dom.ast.IBinding;
 import org.eclipse.cdt.core.dom.ast.IEnumerator;
 import org.eclipse.cdt.core.dom.ast.IFunction;
@@ -35,15 +34,13 @@ import org.eclipse.cdt.core.index.IIndex;
 import org.eclipse.cdt.core.index.IIndexManager;
 import org.eclipse.cdt.core.model.ICElement;
 import org.eclipse.cdt.core.model.ICProject;
-import org.eclipse.cdt.core.model.ITranslationUnit;
-import org.eclipse.cdt.core.model.IWorkingCopy;
 import org.eclipse.cdt.ui.CUIPlugin;
 
 import org.eclipse.cdt.internal.ui.actions.OpenActionUtil;
 import org.eclipse.cdt.internal.ui.editor.CEditor;
 import org.eclipse.cdt.internal.ui.util.ExceptionHandler;
 import org.eclipse.cdt.internal.ui.viewsupport.CElementLabels;
-import org.eclipse.cdt.internal.ui.viewsupport.FindNameForSelectionVisitor;
+import org.eclipse.cdt.internal.ui.viewsupport.IndexUI;
 
 public class CallHierarchyUI {
 	private static boolean sIsJUnitTest= false;
@@ -128,22 +125,22 @@ public class CallHierarchyUI {
 
 			index.acquireReadLock();
 			try {
-				IASTName name= getSelectedName(index, editorInput, sel);
+				IASTName name= IndexUI.getSelectedName(index, editorInput, sel);
 				if (name != null) {
 					IBinding binding= name.resolveBinding();
 					if (CallHierarchyUI.isRelevantForCallHierarchy(binding)) {
 						if (name.isDefinition()) {
-							ICElement elem= CHQueries.getCElementForName(project, index, name);
+							ICElement elem= IndexUI.getCElementForName(project, index, name);
 							if (elem != null) {
 								return new ICElement[]{elem};
 							}
 						}
 						else {
-							ICElement[] elems= CHQueries.findAllDefinitions(index, binding);
+							ICElement[] elems= IndexUI.findAllDefinitions(index, binding);
 							if (elems.length == 0) {
-								elems= CHQueries.findAllDefinitions(index, binding);
+								elems= IndexUI.findAllDefinitions(index, binding);
 								if (elems.length == 0) {
-									ICElement elem= CHQueries.findAnyDeclaration(index, project, binding);
+									ICElement elem= IndexUI.findAnyDeclaration(index, project, binding);
 									if (elems != null) {
 										elems= new ICElement[]{elem};
 									}
@@ -171,21 +168,6 @@ public class CallHierarchyUI {
 		return null;
 	}
 
-	private static IASTName getSelectedName(IIndex index, IEditorInput editorInput, ITextSelection selection) throws CoreException {
-		int selectionStart = selection.getOffset();
-		int selectionLength = selection.getLength();
-
-		IWorkingCopy workingCopy = CUIPlugin.getDefault().getWorkingCopyManager().getWorkingCopy(editorInput);
-		if (workingCopy == null)
-			return null;
-		
-		int options= ITranslationUnit.AST_SKIP_INDEXED_HEADERS;
-		IASTTranslationUnit ast = workingCopy.getAST(index, options);
-		FindNameForSelectionVisitor finder= new FindNameForSelectionVisitor(ast.getFilePath(), selectionStart, selectionLength);
-		ast.accept(finder);
-		return finder.getSelectedName();
-	}
-
 	public static boolean isRelevantForCallHierarchy(IBinding binding) {
 		if (binding instanceof ICExternalBinding ||
 				binding instanceof IEnumerator ||
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ICEditorActionDefinitionIds.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ICEditorActionDefinitionIds.java
index 5445b403e07..c006ca381bd 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ICEditorActionDefinitionIds.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ICEditorActionDefinitionIds.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2006 QNX Software Systems and others.
+ * Copyright (c) 2000, 2007 QNX Software Systems and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -8,6 +8,7 @@
  * Contributors:
  *     QNX Software Systems - Initial API and implementation
  *     IBM Corporation
+ *     Markus Schorn (Wind River Systems)
  *******************************************************************************/
 
 package org.eclipse.cdt.internal.ui.editor;
@@ -124,7 +125,7 @@ public interface ICEditorActionDefinitionIds extends ITextEditorActionDefinition
 	 * Action definition ID of the navigate -> open type hierarchy action
 	 * (value <code>"org.eclipse.cdt.ui.edit.text.c.open.type.hierarchy"</code>).
 	 */
-//	public static final String OPEN_TYPE_HIERARCHY= "org.eclipse.cdt.ui.edit.text.c.open.type.hierarchy"; //$NON-NLS-1$
+	public static final String OPEN_TYPE_HIERARCHY= "org.eclipse.cdt.ui.edit.text.c.open.type.hierarchy"; //$NON-NLS-1$
 
 	/**
 	 * Action definition ID of the navigate -> open action
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/WorkInProgressPreferencePage.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/WorkInProgressPreferencePage.java
index 759381d90fb..a8ce2043d7b 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/WorkInProgressPreferencePage.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/WorkInProgressPreferencePage.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2006 IBM Corporation and others.
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -7,6 +7,7 @@
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
+ *     Markus Schorn (Wind River Systems)
  *******************************************************************************/
 package org.eclipse.cdt.internal.ui.preferences;
 
@@ -85,6 +86,7 @@ public class WorkInProgressPreferencePage extends PreferencePage implements IWor
 
 		// Add your controls here
 		addCheckBox(result, "Use new model builder", CCorePlugin.PREF_USE_NEW_MODEL_BUILDER); //$NON-NLS-1$
+		addCheckBox(result, "Show context menus for type hierarchy", "showCtxMenuTypeHierarchy"); //$NON-NLS-1$ //$NON-NLS-2$
 		
 		applyDialogFont(result);
 		return result;
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/Messages.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/Messages.java
new file mode 100644
index 00000000000..fbc851e8328
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/Messages.java
@@ -0,0 +1,58 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import org.eclipse.osgi.util.NLS;
+
+public class Messages extends NLS {
+	private static final String BUNDLE_NAME = "org.eclipse.cdt.internal.ui.typehierarchy.messages"; //$NON-NLS-1$
+	public static String OpenTypeHierarchyAction_label;
+	public static String OpenTypeHierarchyAction_tooltip;
+	public static String THHierarchyModel_Job_title;
+	public static String THHistoryDropDownAction_ClearHistory;
+	public static String THHistoryDropDownAction_tooltip;
+	public static String THHistoryListAction_HistoryList_label;
+	public static String THHistoryListAction_HistoryList_title;
+	public static String THHistoryListAction_label;
+	public static String THHistoryListAction_Remove;
+	public static String THViewPart_AutomaticOrientation;
+	public static String THViewPart_Cancel;
+	public static String THViewPart_Cancel_tooltip;
+	public static String THViewPart_CompleteTypeHierarchy;
+	public static String THViewPart_CompleteTypeHierarchy_tooltip;
+	public static String THViewPart_FocusOn;
+	public static String THViewPart_HorizontalOrientation;
+	public static String THViewPart_instruction;
+	public static String THViewPart_LayoutMenu;
+	public static String THViewPart_MethodPane_title;
+	public static String THViewPart_Open;
+	public static String THViewPart_Open_tooltip;
+	public static String THViewPart_Refresh;
+	public static String THViewPart_Refresh_tooltip;
+	public static String THViewPart_ShowFileNames;
+	public static String THViewPart_ShowFileNames_tooltip;
+	public static String THViewPart_SinglePaneOrientation;
+	public static String THViewPart_SubtypeHierarchy;
+	public static String THViewPart_SubtypeHierarchy_tooltip;
+	public static String THViewPart_SupertypeHierarchy;
+	public static String THViewPart_SupertypeHierarchy_tooltip;
+	public static String THViewPart_VerticalOrientation;
+	public static String TypeHierarchyUI_OpenTypeHierarchy;
+	public static String TypeHierarchyUI_SelectFromList;
+	static {
+		// initialize resource bundle
+		NLS.initializeMessages(BUNDLE_NAME, Messages.class);
+	}
+
+	private Messages() {
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/OpenTypeHierarchyAction.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/OpenTypeHierarchyAction.java
new file mode 100644
index 00000000000..8b431124886
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/OpenTypeHierarchyAction.java
@@ -0,0 +1,84 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.ui.IWorkbenchSite;
+
+import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.ui.actions.SelectionDispatchAction;
+
+import org.eclipse.cdt.internal.ui.editor.CEditor;
+
+
+public class OpenTypeHierarchyAction extends SelectionDispatchAction {
+
+	private CEditor fEditor;
+
+	public OpenTypeHierarchyAction(IWorkbenchSite site) {
+		super(site);
+		setText(Messages.OpenTypeHierarchyAction_label);
+		setToolTipText(Messages.OpenTypeHierarchyAction_tooltip);
+	}
+	
+	public OpenTypeHierarchyAction(CEditor editor) {
+		this(editor.getSite());
+		fEditor= editor;
+		setEnabled(fEditor != null && fEditor.getInputCElement() != null);
+	}
+
+	public void run(ITextSelection sel) {
+		TypeHierarchyUI.open(fEditor, sel);
+	}
+	
+	public void run(IStructuredSelection selection) {
+		if (!selection.isEmpty()) {
+			Object selectedObject= selection.getFirstElement();
+			ICElement elem= (ICElement) getAdapter(selectedObject, ICElement.class);
+			if (elem != null) {
+				TypeHierarchyUI.open(elem, getSite().getWorkbenchWindow());
+			}
+		}
+	}
+
+	public void selectionChanged(ITextSelection sel) {
+	}
+			
+	public void selectionChanged(IStructuredSelection selection) {
+		if (selection.isEmpty()) {
+			setEnabled(false);
+			return;
+		}
+		
+		Object selectedObject= selection.getFirstElement();
+		ICElement elem= (ICElement) getAdapter(selectedObject, ICElement.class);
+		if (elem != null) {
+			setEnabled(TypeHierarchyUI.isValidInput(elem));
+		}
+		else {
+			setEnabled(false);
+		}
+	}
+
+	private Object getAdapter(Object object, Class desiredClass) {
+		if (desiredClass.isInstance(object)) {
+			return object;
+		}
+		if (object instanceof IAdaptable) {
+			IAdaptable adaptable= (IAdaptable) object;
+			return adaptable.getAdapter(desiredClass);
+		}
+		return null;
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THContentProvider.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THContentProvider.java
new file mode 100644
index 00000000000..cb53f81d555
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THContentProvider.java
@@ -0,0 +1,59 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+public class THContentProvider implements ITreeContentProvider {
+	private static final Object[] NO_CHILDREN= new Object[0];
+	private THHierarchyModel fModel; 
+
+	public THContentProvider() {
+	}
+    
+    final public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+    	fModel= (THHierarchyModel) newInput;
+    }
+
+    public void dispose() {
+    	fModel= null;
+    }
+
+    final public Object[] getElements(Object inputElement) {
+    	if (fModel == null) {
+    		return NO_CHILDREN;
+    	}
+        return fModel.getHierarchyRootElements();
+    }
+
+    final public boolean hasChildren(Object element) {
+    	if (element instanceof THNode) {
+    		return ((THNode) element).hasChildren();
+    	}
+    	return false;
+    }
+
+    public Object[] getChildren(Object element) {
+    	if (element instanceof THNode) {
+    		return ((THNode) element).getChildren();
+    	}
+    	return NO_CHILDREN;
+    }
+
+	public Object getParent(Object element) {
+    	if (element instanceof THNode) {
+    		return ((THNode) element).getParent();
+    	}
+    	return null;
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THDropTargetListener.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THDropTargetListener.java
new file mode 100644
index 00000000000..968c2876deb
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THDropTargetListener.java
@@ -0,0 +1,105 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import java.util.Iterator;
+
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.jface.util.LocalSelectionTransfer;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.DropTargetEvent;
+import org.eclipse.swt.dnd.DropTargetListener;
+import org.eclipse.swt.widgets.Display;
+
+import org.eclipse.cdt.core.model.ICElement;
+
+
+public class THDropTargetListener implements DropTargetListener {
+    
+    private THViewPart fTypeHierarchy;
+	private ICElement fInput;
+	private boolean fEnabled= true;
+
+    public THDropTargetListener(THViewPart view) {
+    	fTypeHierarchy= view;
+    }
+    
+    public void setEnabled(boolean val) {
+    	fEnabled= val;
+    }
+    
+    public void dragEnter(DropTargetEvent event) {
+    	fInput= null;
+        checkOperation(event);
+        if (event.detail != DND.DROP_NONE) {
+			if (LocalSelectionTransfer.getTransfer().isSupportedType(event.currentDataType)) {
+				fInput= checkLocalSelection();
+				if (!TypeHierarchyUI.isValidInput(fInput)) {
+					event.detail= DND.DROP_NONE;
+					fInput= null;
+				}
+        	}
+        }
+    }
+
+	private ICElement checkLocalSelection() {
+		ISelection sel= LocalSelectionTransfer.getTransfer().getSelection();
+		if (sel instanceof IStructuredSelection) {
+			for (Iterator iter = ((IStructuredSelection)sel).iterator(); iter.hasNext();) {
+				Object element = iter.next();
+				if (element instanceof ICElement) {
+					return (ICElement) element;
+				}
+				if (element instanceof IAdaptable) {
+					ICElement adapter= (ICElement) ((IAdaptable) element).getAdapter(ICElement.class);
+					if (adapter != null) {
+						return adapter;
+					}
+				}
+			}
+		}
+		return null;
+	}
+
+    public void dragLeave(DropTargetEvent event) {
+    }
+
+    public void dragOperationChanged(DropTargetEvent event) {
+        checkOperation(event);
+    }
+
+    public void dragOver(DropTargetEvent event) {
+    }
+
+    public void drop(DropTargetEvent event) {
+    	if (fInput == null) {
+            Display.getCurrent().beep();
+        }
+        else {
+            fTypeHierarchy.setInput(fInput);
+        }
+    }
+
+    public void dropAccept(DropTargetEvent event) {
+    }
+    
+    private void checkOperation(DropTargetEvent event) {
+        if (fEnabled && (event.operations & DND.DROP_COPY) != 0) {
+            event.detail= DND.DROP_COPY;
+        }
+        else {
+            event.detail= DND.DROP_NONE;
+        }
+    }
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraph.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraph.java
new file mode 100644
index 00000000000..3229c5ef686
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraph.java
@@ -0,0 +1,95 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.cdt.core.model.ICElement;
+
+public class THGraph {
+	private HashSet fRootNodes= new HashSet();
+	private HashSet fLeaveNodes= new HashSet();
+	private HashMap fNodes= new HashMap();
+	
+	public void clear() {
+		fRootNodes.clear();
+		fLeaveNodes.clear();
+		fNodes.clear();
+	}
+
+	public THGraphNode getNode(ICElement elem) {
+		return (THGraphNode) fNodes.get(elem);
+	}
+
+	public THGraphNode addNode(ICElement elem) {
+		THGraphNode node= (THGraphNode) fNodes.get(elem); 
+
+		if (node == null) {
+			node= new THGraphNode(elem);
+			fNodes.put(elem, node);
+			fRootNodes.add(node);
+			fLeaveNodes.add(node);
+		}
+		return node;
+	}
+	
+	public THGraphEdge addEdge(THGraphNode from, THGraphNode to) {
+		if (createsLoop(from, to)) {
+			return null;
+		}
+		THGraphEdge edge= new THGraphEdge(from, to);
+		from.startEdge(edge);
+		to.endEdge(edge);
+		fRootNodes.remove(to);
+		fLeaveNodes.remove(from);
+		return edge;
+	}
+
+	private boolean createsLoop(THGraphNode from, THGraphNode to) {
+		if (to.getOutgoing().isEmpty() || from.getIncoming().isEmpty()) {
+			return false;
+		}
+		
+		HashSet checked= new HashSet();
+		ArrayList stack= new ArrayList();
+		stack.add(to);
+		
+		while (!stack.isEmpty()) {
+			THGraphNode node= (THGraphNode) stack.remove(stack.size()-1);
+			List out= node.getOutgoing();
+			for (Iterator iterator = out.iterator(); iterator.hasNext();) {
+				THGraphEdge	edge= (THGraphEdge) iterator.next();
+				node= edge.getEndNode();
+				if (node == from) {
+					return true;
+				}
+				if (checked.add(node)) {
+					stack.add(node);
+				}
+			}
+		}
+		return false;
+	}
+
+	public Collection getRootNodes() {
+		return fRootNodes;
+	}
+
+	public Collection getLeaveNodes() {
+		return fLeaveNodes;
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraphEdge.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraphEdge.java
new file mode 100644
index 00000000000..75f10950b7a
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraphEdge.java
@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+class THGraphEdge {
+	private THGraphNode fFrom;
+	private THGraphNode fTo;
+	
+	THGraphEdge(THGraphNode from, THGraphNode to) {
+		fFrom= from;
+		fTo= to;
+	}
+	
+	THGraphNode getStartNode() {
+		return fFrom;
+	}
+	
+	THGraphNode getEndNode() {
+		return fTo;
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraphNode.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraphNode.java
new file mode 100644
index 00000000000..161877f9606
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THGraphNode.java
@@ -0,0 +1,70 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.eclipse.cdt.core.model.ICElement;
+
+class THGraphNode {
+	private List fOutgoing= Collections.EMPTY_LIST;
+	private List fIncoming= Collections.EMPTY_LIST;
+	private ICElement fElement;
+	private Object[] fMembers;
+	
+	THGraphNode(ICElement element) {
+		fElement= element;
+	}
+	
+	void startEdge(THGraphEdge outgoing) {
+		fOutgoing= addElement(fOutgoing, outgoing);
+	}
+
+	void endEdge(THGraphEdge incoming) {
+		fIncoming= addElement(fIncoming, incoming);
+	}
+	
+	ICElement getElement() {
+		return fElement;
+	}
+
+	private List addElement(List list, Object elem) {
+		switch (list.size()) {
+		case 0:
+			return Collections.singletonList(elem);
+		case 1:
+			list= new ArrayList(list);
+			list.add(elem);
+			return list;
+		}
+		list.add(elem);
+		return list;
+	}
+
+	List getOutgoing() {
+		return fOutgoing;
+	}
+	
+	List getIncoming() {
+		return fIncoming;
+	}
+
+	public void setMembers(Object[] array) {
+		fMembers= array;
+	}
+	
+	public Object[] getMembers() {
+		return fMembers;
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHierarchyModel.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHierarchyModel.java
new file mode 100644
index 00000000000..9f4103490b4
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHierarchyModel.java
@@ -0,0 +1,366 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.runtime.jobs.ISchedulingRule;
+import org.eclipse.core.runtime.jobs.Job;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.ui.progress.IWorkbenchSiteProgressService;
+
+import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.dom.ast.DOMException;
+import org.eclipse.cdt.core.dom.ast.IBinding;
+import org.eclipse.cdt.core.dom.ast.ICompositeType;
+import org.eclipse.cdt.core.dom.ast.IEnumeration;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPBase;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassType;
+import org.eclipse.cdt.core.index.IIndex;
+import org.eclipse.cdt.core.model.CoreModel;
+import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.core.model.ICProject;
+import org.eclipse.cdt.ui.CUIPlugin;
+
+import org.eclipse.cdt.internal.ui.viewsupport.IndexUI;
+
+public class THHierarchyModel {
+    public class BackgroundJob extends Job {
+		public BackgroundJob() {
+			super(Messages.THHierarchyModel_Job_title);
+		}
+
+		protected IStatus run(IProgressMonitor monitor) {
+			return onComputeGraph(this, monitor);
+		}
+	}
+    
+	static final int TYPE_HIERARCHY = 0;
+    static final int SUB_TYPE_HIERARCHY = 1;
+    static final int SUPER_TYPE_HIERARCHY = 2;
+
+	static final int END_OF_COMPUTATION = 0;
+	
+	private static final ISchedulingRule RULE = new THSchedulingRule();
+	private static final Object[] NO_CHILDREN= new Object[0];
+
+	private ICElement fInput;
+	private int fHierarchyKind;
+	
+	private THGraph fGraph;
+	private Object[] fRootNodes;
+	private THNode fHierarchySelection;
+	private ICElement fHierarchySelectionToRestore;
+	
+	private Job fJob;
+	private Display fDisplay;
+	private THViewPart fView;
+	
+	public THHierarchyModel(THViewPart view, Display display) {
+		fDisplay= display;
+		fView= view;
+	}
+	
+	public ICElement getInput() {
+		return fInput;
+	}
+
+	public int getHierarchyKind() {
+		return fHierarchyKind;
+	}
+
+	public void setHierarchyKind(int hierarchyKind) {
+		fHierarchyKind = hierarchyKind;
+		computeNodes();
+	}
+
+	public Object[] getHierarchyRootElements() {
+		if (fRootNodes == null) {
+			return new Object[] {"..."}; //$NON-NLS-1$
+		}
+		return fRootNodes;
+	}
+
+//	public void setWorkingSetFilter(WorkingSetFilterUI filterUI) {
+//		
+//	}
+
+	synchronized public void setInput(ICElement input) {
+		stopGraphComputation();
+		fInput= input;
+		fRootNodes= null;
+		fHierarchySelection= null;
+		fHierarchySelectionToRestore= input;
+	}
+
+	synchronized public void computeGraph() {
+		if (fJob != null) {
+			fJob.cancel();
+		}
+		fJob= new BackgroundJob();
+		fJob.setRule(RULE);
+		IWorkbenchSiteProgressService ps= (IWorkbenchSiteProgressService) fView.getSite().getAdapter(IWorkbenchSiteProgressService.class);
+		if (ps != null) {
+			ps.schedule(fJob, 0L, true);
+		}
+		else {
+			fJob.schedule();
+		}
+	}
+
+	synchronized public void stopGraphComputation() {
+		if (fJob != null) {
+			fJob.cancel();
+		}
+		fJob= null;
+	}
+
+	protected IStatus onComputeGraph(Job job, IProgressMonitor monitor) {
+		THGraph graph= new THGraph();
+		try {
+			ICProject[] scope= CoreModel.getDefault().getCModel().getCProjects();
+			IIndex index= CCorePlugin.getIndexManager().getIndex(scope);
+			index.acquireReadLock();
+			try {
+				if (monitor.isCanceled()) 
+					return Status.CANCEL_STATUS;
+				addSuperClasses(graph, index, monitor);
+				if (monitor.isCanceled()) 
+					return Status.CANCEL_STATUS;
+				addSubClasses(graph, monitor);
+				if (monitor.isCanceled()) 
+					return Status.CANCEL_STATUS;
+			}
+			finally {
+				index.releaseReadLock(); 
+			}
+		} catch (CoreException e) {
+			CUIPlugin.getDefault().log(e);
+		} catch (InterruptedException e) {
+			return Status.CANCEL_STATUS;
+		}
+		finally {
+			onJobDone(graph, job);
+		}			
+		return Status.OK_STATUS;
+	}
+	
+	private void addSuperClasses(THGraph graph, IIndex index, IProgressMonitor monitor) {
+		if (fInput == null) {
+			return;
+		}
+		HashSet handled= new HashSet();
+		ArrayList stack= new ArrayList();
+		stack.add(fInput);
+		handled.add(fInput);
+		while (!stack.isEmpty()) {
+			ICElement elem= (ICElement) stack.remove(stack.size()-1);
+			THGraphNode graphNode= graph.addNode(elem);
+			try {
+				IBinding binding = IndexUI.elementToBinding(index, elem);
+				if (binding instanceof ICPPClassType) {
+					ICPPClassType ct= (ICPPClassType) binding;
+					addMembers(index, graphNode, ct);
+					ICPPBase[] bases= ct.getBases();
+					for (int i = 0; i < bases.length; i++) {
+						ICPPBase base= bases[i];
+						IBinding basecl= base.getBaseClass();
+						ICElement[] baseElems= IndexUI.findRepresentative(index, basecl);
+						if (baseElems.length > 0) {
+							ICElement baseElem= baseElems[0];
+							THGraphNode baseGraphNode= graph.addNode(baseElem);
+							addMembers(index, baseGraphNode, basecl);							
+							graph.addEdge(graphNode, baseGraphNode);
+							if (handled.add(baseElem)) {
+								stack.add(baseElem);
+							}
+						}
+					}
+				}
+			} catch (DOMException e) {
+				CUIPlugin.getDefault().log(e);
+			} catch (CoreException e) {
+				CUIPlugin.getDefault().log(e);
+			}
+		}
+	}
+
+	private void addMembers(IIndex index, THGraphNode graphNode, IBinding binding) throws DOMException, CoreException {
+		if (graphNode.getMembers() == null) {
+			if (binding instanceof ICPPClassType) {
+				ICPPClassType ct= (ICPPClassType) binding;
+				ArrayList memberList= new ArrayList();
+				IBinding[] members= ct.getDeclaredFields();
+				addMemberElements(index, members, memberList);
+				members= ct.getDeclaredMethods();
+				addMemberElements(index, members, memberList);
+				graphNode.setMembers(memberList.toArray());
+			}
+			else if (binding instanceof ICompositeType) {
+				ICompositeType ct= (ICompositeType) binding;
+				ArrayList memberList= new ArrayList();
+				IBinding[] members= ct.getFields();
+				addMemberElements(index, members, memberList);
+				graphNode.setMembers(memberList.toArray());
+			}
+			else if (binding instanceof IEnumeration) {
+				IEnumeration ct= (IEnumeration) binding;
+				ArrayList memberList= new ArrayList();
+				IBinding[] members= ct.getEnumerators();
+				addMemberElements(index, members, memberList);
+				graphNode.setMembers(memberList.toArray());
+			}
+		}
+	}
+	
+	private void addMemberElements(IIndex index, IBinding[] members, ArrayList memberList) throws CoreException, DOMException {
+		for (int i = 0; i < members.length; i++) {
+			IBinding binding = members[i];
+			ICElement[] elems= IndexUI.findRepresentative(index, binding);
+			if (elems.length > 0) {
+				memberList.add(elems[0]);
+			}
+		}
+	}
+
+	private void addSubClasses(THGraph graph, IProgressMonitor monitor) {
+		// mstodo Auto-generated method stub
+		
+	}
+
+	protected void computeNodes() {
+		if (fGraph == null) {
+			return;
+		}
+		boolean fwd= fHierarchyKind == SUPER_TYPE_HIERARCHY;
+		ArrayList stack= new ArrayList();
+		ArrayList roots= new ArrayList();
+		ArrayList leaves= new ArrayList();
+		
+		THNode[] newSelection= new THNode[2];
+		Collection groots;
+		if (fHierarchyKind == TYPE_HIERARCHY) {
+			groots= fGraph.getLeaveNodes();
+		}
+		else {
+			THGraphNode node= fGraph.getNode(fInput);
+			if (node != null) {
+				groots= Collections.singleton(node);
+			}
+			else {
+				groots= Collections.EMPTY_SET;
+			}
+		}
+		
+		for (Iterator iterator = groots.iterator(); iterator.hasNext();) {
+			THGraphNode gnode = (THGraphNode) iterator.next();
+			THNode node = createNode(newSelection, null, gnode);
+			roots.add(node);
+			stack.add(node);
+		}
+		
+		while(!stack.isEmpty()) {
+			THNode node= (THNode) stack.remove(stack.size()-1);
+			THGraphNode gnode= fGraph.getNode(node.getRepresentedDeclaration());
+			List edges= fwd ? gnode.getOutgoing() : gnode.getIncoming();
+			if (edges.isEmpty()) {
+				leaves.add(node);
+			}
+			else {
+				for (Iterator iterator = edges.iterator(); iterator.hasNext();) {
+					THGraphEdge edge = (THGraphEdge) iterator.next();
+					THGraphNode gchildNode= fwd ? edge.getEndNode() : edge.getStartNode();
+					THNode childNode= createNode(newSelection, node, gchildNode);
+					node.addChild(childNode);
+					stack.add(childNode);
+				}
+			}
+		}
+		fHierarchySelection= newSelection[0];
+		if (fHierarchySelection == null) {
+			fHierarchySelection= newSelection[1];
+		}
+		if (fHierarchySelection != null) {
+			fHierarchySelectionToRestore= fHierarchySelection.getRepresentedDeclaration();
+		}
+		fRootNodes= roots.toArray();
+	}
+
+	private THNode createNode(THNode[] newSelection, THNode parent, THGraphNode gnode) {
+		ICElement element = gnode.getElement();
+		THNode node= new THNode(parent, element);
+		if (newSelection[0] == null) {
+			if (node.equals(fHierarchySelection)) {
+				newSelection[0]= node;
+			}
+			else if (newSelection[1] == null) {
+				if (element.equals(fHierarchySelectionToRestore)) {
+					newSelection[1]= node;
+				}
+			}
+		}
+		return node;
+	}
+
+	synchronized private void onJobDone(final THGraph graph, Job job) {
+		if (fJob == job) {
+			fJob= null;
+			fDisplay.asyncExec(new Runnable(){
+				public void run() {
+					fGraph= graph;
+					computeNodes();
+					notifyEvent(END_OF_COMPUTATION);
+				}
+			});
+		}
+	}
+
+	private void notifyEvent(int event) {
+		fView.onEvent(event);
+	}
+
+	synchronized public void refresh() {
+		computeGraph();
+	}
+
+	public boolean isComputed() {
+		return fRootNodes!=null;
+	}
+
+	public THNode getSelectionInHierarchy() {
+		return fHierarchySelection;
+	}
+
+	public void onHierarchySelectionChanged(THNode node) {
+		fHierarchySelection= node;
+		if (node != null) {
+			fHierarchySelectionToRestore= node.getRepresentedDeclaration();
+		}
+	}
+
+	public Object[] getMembers() {
+		if (fHierarchySelection != null) {
+			THGraphNode gnode= fGraph.getNode(fHierarchySelection.getRepresentedDeclaration());
+			return gnode.getMembers();
+		}
+		return NO_CHILDREN;
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryAction.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryAction.java
new file mode 100644
index 00000000000..6901fca9ba9
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryAction.java
@@ -0,0 +1,59 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *     Markus Schorn (Wind River Systems)
+ *******************************************************************************/
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.resource.ImageDescriptor;
+
+import org.eclipse.cdt.core.model.ICElement;
+
+import org.eclipse.cdt.internal.ui.viewsupport.CElementImageProvider;
+import org.eclipse.cdt.internal.ui.viewsupport.CElementLabels;
+
+
+/**
+ * Action used for the include browser forward / backward buttons
+ */
+public class THHistoryAction extends Action {
+	final static int LABEL_OPTIONS= 
+		CElementLabels.M_PARAMETER_TYPES | 
+		CElementLabels.ALL_FULLY_QUALIFIED |
+		CElementLabels.MF_POST_FILE_QUALIFIED;
+	
+	private THViewPart fViewPart;
+	private ICElement fElement;
+	
+	public THHistoryAction(THViewPart hierarchyView, ICElement element) {
+        super("", AS_RADIO_BUTTON); //$NON-NLS-1$
+		fViewPart= hierarchyView;
+		fElement= element;		
+	
+		String elementName= CElementLabels.getElementLabel(element, LABEL_OPTIONS);
+		setText(elementName);
+		setImageDescriptor(getImageDescriptor(element));
+	}
+	
+	private ImageDescriptor getImageDescriptor(ICElement elem) {
+		CElementImageProvider imageProvider= new CElementImageProvider();
+		ImageDescriptor desc= imageProvider.getBaseImageDescriptor(elem, 0);
+		imageProvider.dispose();
+		return desc;
+	}
+	
+	/*
+	 * @see Action#run()
+	 */
+	public void run() {
+		fViewPart.setInput(fElement);
+	}
+	
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryDropDownAction.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryDropDownAction.java
new file mode 100644
index 00000000000..5bdb15f7392
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryDropDownAction.java
@@ -0,0 +1,105 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *     Markus Schorn (Wind River Systems)
+ *******************************************************************************/
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.action.ActionContributionItem;
+import org.eclipse.jface.action.IMenuCreator;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Menu;
+import org.eclipse.swt.widgets.MenuItem;
+
+import org.eclipse.cdt.core.model.ICElement;
+
+import org.eclipse.cdt.internal.ui.CPluginImages;
+
+public class THHistoryDropDownAction extends Action implements IMenuCreator {
+	
+	public static class ClearHistoryAction extends Action {
+
+		private THViewPart fView;
+		
+		public ClearHistoryAction(THViewPart view) {
+			super(Messages.THHistoryDropDownAction_ClearHistory);
+			fView= view;
+		}
+			
+		public void run() {
+			fView.setHistoryEntries(new ICElement[0]);
+			fView.setInput(null);
+		}
+	}
+
+	public static final int RESULTS_IN_DROP_DOWN= 10;
+
+	private THViewPart fHierarchyView;
+	private Menu fMenu;
+	
+	public THHistoryDropDownAction(THViewPart viewPart) {
+		fHierarchyView= viewPart;
+		fMenu= null;
+		setToolTipText(Messages.THHistoryDropDownAction_tooltip); 
+		CPluginImages.setImageDescriptors(this, CPluginImages.T_LCL, "history_list.gif"); //$NON-NLS-1$
+		setMenuCreator(this);
+	}
+
+	public void dispose() {
+		// action is reused, can be called several times.
+		if (fMenu != null) {
+			fMenu.dispose();
+			fMenu= null;
+		}
+	}
+
+	public Menu getMenu(Menu parent) {
+		return null;
+	}
+
+	public Menu getMenu(Control parent) {
+		if (fMenu != null) {
+			fMenu.dispose();
+		}
+		fMenu= new Menu(parent);
+		ICElement[] elements= fHierarchyView.getHistoryEntries();
+		addEntries(fMenu, elements);
+		new MenuItem(fMenu, SWT.SEPARATOR);
+		addActionToMenu(fMenu, new THHistoryListAction(fHierarchyView));
+		addActionToMenu(fMenu, new ClearHistoryAction(fHierarchyView));
+		return fMenu;
+	}
+	
+	private boolean addEntries(Menu menu, ICElement[] elements) {
+		boolean checked= false;
+		
+		int min= Math.min(elements.length, RESULTS_IN_DROP_DOWN);
+		for (int i= 0; i < min; i++) {
+			THHistoryAction action= new THHistoryAction(fHierarchyView, elements[i]);
+			action.setChecked(elements[i].equals(fHierarchyView.getInput()));
+			checked= checked || action.isChecked();
+			addActionToMenu(menu, action);
+		}
+		
+		
+		return checked;
+	}
+	
+
+	protected void addActionToMenu(Menu parent, Action action) {
+		ActionContributionItem item= new ActionContributionItem(action);
+		item.fill(parent, -1);
+	}
+
+	public void run() {
+		(new THHistoryListAction(fHierarchyView)).run();
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryListAction.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryListAction.java
new file mode 100644
index 00000000000..36e89a04580
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THHistoryListAction.java
@@ -0,0 +1,182 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *     Markus Schorn (Wind River Systems)
+ *******************************************************************************/
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.dialogs.StatusDialog;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.LabelProvider;
+import org.eclipse.jface.viewers.StructuredSelection;
+import org.eclipse.jface.window.Window;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Shell;
+
+import org.eclipse.cdt.core.model.ICElement;
+
+import org.eclipse.cdt.internal.ui.dialogs.StatusInfo;
+import org.eclipse.cdt.internal.ui.viewsupport.CElementImageProvider;
+import org.eclipse.cdt.internal.ui.viewsupport.CUILabelProvider;
+import org.eclipse.cdt.internal.ui.wizards.dialogfields.DialogField;
+import org.eclipse.cdt.internal.ui.wizards.dialogfields.IListAdapter;
+import org.eclipse.cdt.internal.ui.wizards.dialogfields.LayoutUtil;
+import org.eclipse.cdt.internal.ui.wizards.dialogfields.ListDialogField;
+
+public class THHistoryListAction extends Action {
+	
+	private class HistoryListDialog extends StatusDialog {
+		
+		private ListDialogField fHistoryList;
+		private IStatus fHistoryStatus;
+		private ICElement fResult;
+		
+		private HistoryListDialog(Shell shell, ICElement[] historyEntries) {
+			super(shell);
+			setHelpAvailable(false);			
+			setTitle(Messages.THHistoryListAction_HistoryList_title); 
+			String[] buttonLabels= new String[] { 
+				Messages.THHistoryListAction_Remove, 
+			};
+					
+			IListAdapter adapter= new IListAdapter() {
+				public void customButtonPressed(ListDialogField field, int index) {
+					doCustomButtonPressed();
+				}
+				public void selectionChanged(ListDialogField field) {
+					doSelectionChanged();
+				}
+				
+				public void doubleClicked(ListDialogField field) {
+					doDoubleClicked();
+				}				
+			};
+		
+			LabelProvider labelProvider= new CUILabelProvider(THHistoryAction.LABEL_OPTIONS, CElementImageProvider.OVERLAY_ICONS);
+			
+			fHistoryList= new ListDialogField(adapter, buttonLabels, labelProvider);
+			fHistoryList.setLabelText(Messages.THHistoryListAction_HistoryList_label); 
+			fHistoryList.setElements(Arrays.asList(historyEntries));
+			
+			ISelection sel;
+			if (historyEntries.length > 0) {
+				sel= new StructuredSelection(historyEntries[0]);
+			} else {
+				sel= new StructuredSelection();
+			}
+			
+			fHistoryList.selectElements(sel);
+		}
+
+			
+		/*
+		 * @see Dialog#createDialogArea(Composite)
+		 */
+		protected Control createDialogArea(Composite parent) {
+			initializeDialogUnits(parent);
+			
+			Composite composite= (Composite) super.createDialogArea(parent);
+			
+			Composite inner= new Composite(composite, SWT.NONE);
+			inner.setFont(parent.getFont());
+			
+			inner.setLayoutData(new GridData(GridData.FILL_BOTH));
+
+			LayoutUtil.doDefaultLayout(inner, new DialogField[] { fHistoryList }, true, 0, 0);
+			LayoutUtil.setHeightHint(fHistoryList.getListControl(null), convertHeightInCharsToPixels(12));
+			LayoutUtil.setHorizontalGrabbing(fHistoryList.getListControl(null));
+
+			applyDialogFont(composite);		
+			return composite;
+		}
+
+		/**
+		 * Method doCustomButtonPressed.
+		 */
+		private void doCustomButtonPressed() {
+			fHistoryList.removeElements(fHistoryList.getSelectedElements());
+		}
+		
+		private void doDoubleClicked() {
+			if (fHistoryStatus.isOK()) {
+				okPressed();
+			}
+		}
+		
+		
+		private void doSelectionChanged() {
+			StatusInfo status= new StatusInfo();
+			List selected= fHistoryList.getSelectedElements();
+			if (selected.size() != 1) {
+				status.setError(""); //$NON-NLS-1$
+				fResult= null;
+			} else {
+				fResult= (ICElement) selected.get(0);
+			}
+			fHistoryList.enableButton(0, fHistoryList.getSize() > selected.size() && selected.size() != 0);			
+			fHistoryStatus= status;
+			updateStatus(status);	
+		}
+				
+		public ICElement getResult() {
+			return fResult;
+		}
+		
+		public ICElement[] getRemaining() {
+			List elems= fHistoryList.getElements();
+			return (ICElement[]) elems.toArray(new ICElement[elems.size()]);
+		}	
+		
+		/*
+		 * @see org.eclipse.jface.window.Window#configureShell(Shell)
+		 */
+		protected void configureShell(Shell newShell) {
+			super.configureShell(newShell);
+//			PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, ...);
+		}
+
+		/* (non-Javadoc)
+		 * @see org.eclipse.jface.window.Window#create()
+		 */
+		public void create() {
+			setShellStyle(getShellStyle() | SWT.RESIZE);
+			super.create();
+		}
+
+	}
+	
+	private THViewPart fView;
+	
+	public THHistoryListAction(THViewPart hierarchyView) {
+		fView= hierarchyView;
+		setText(Messages.THHistoryListAction_label); 
+	}
+		
+	/*
+	 * @see IAction#run()
+	 */
+	public void run() {
+		ICElement[] historyEntries= fView.getHistoryEntries();
+		HistoryListDialog dialog= new HistoryListDialog(fView.getSite().getShell(), historyEntries);
+		if (dialog.open() == Window.OK) {
+			fView.setHistoryEntries(dialog.getRemaining());
+			fView.setInput(dialog.getResult());
+		}
+	}
+
+}
+
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THLabelProvider.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THLabelProvider.java
new file mode 100644
index 00000000000..056a8c7cf03
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THLabelProvider.java
@@ -0,0 +1,122 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import java.util.HashMap;
+import java.util.Iterator;
+
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.jface.viewers.IColorProvider;
+import org.eclipse.jface.viewers.LabelProvider;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Display;
+
+import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.ui.CElementImageDescriptor;
+
+import org.eclipse.cdt.internal.ui.viewsupport.CElementLabels;
+import org.eclipse.cdt.internal.ui.viewsupport.CUILabelProvider;
+import org.eclipse.cdt.internal.ui.viewsupport.ImageImageDescriptor;
+
+public class THLabelProvider extends LabelProvider implements IColorProvider {
+	private final static int LABEL_OPTIONS_SIMPLE= CElementLabels.ALL_FULLY_QUALIFIED | CElementLabels.M_PARAMETER_TYPES;
+	private final static int LABEL_OPTIONS_SHOW_FILES= LABEL_OPTIONS_SIMPLE | CElementLabels.MF_POST_FILE_QUALIFIED;
+	
+    private CUILabelProvider fCLabelProvider= new CUILabelProvider(LABEL_OPTIONS_SIMPLE, 0);
+    private THHierarchyModel fModel;
+    private HashMap fCachedImages= new HashMap();
+	private Color fColorInactive;
+    
+    public THLabelProvider(Display display, THHierarchyModel model) {
+        fColorInactive= display.getSystemColor(SWT.COLOR_DARK_GRAY);
+        fModel= model;
+    }
+    
+    public Image getImage(Object element) {
+        if (element instanceof THNode) {
+            THNode node= (THNode) element;
+            ICElement decl= node.getRepresentedDeclaration();
+            if (decl != null) {
+            	Image image= fCLabelProvider.getImage(decl);
+                if (image != null) {
+                	return decorateImage(image, node);
+                }
+            }
+        }
+        return super.getImage(element);
+    }
+
+    public String getText(Object element) {
+        if (element instanceof THNode) {
+            THNode node= (THNode) element;
+            ICElement decl= node.getRepresentedDeclaration();
+            if (decl != null) {
+            	String label= fCLabelProvider.getText(decl);
+            	return label;
+            }
+        }
+        return super.getText(element);
+    }
+    
+	public void dispose() {
+        fCLabelProvider.dispose();
+        for (Iterator iter = fCachedImages.values().iterator(); iter.hasNext();) {
+            Image image = (Image) iter.next();
+            image.dispose();
+        }
+        fCachedImages.clear();
+        super.dispose();
+    }
+
+    private Image decorateImage(Image image, THNode node) {
+        int flags= 0;        
+        if (node.hasChildren()) {
+            if (fModel.getHierarchyKind() == THHierarchyModel.SUPER_TYPE_HIERARCHY) {
+            	flags |= CElementImageDescriptor.RELATES_TO;
+            }
+            else {
+                flags |= CElementImageDescriptor.REFERENCED_BY;
+            }
+        }
+
+        String key= image.toString()+String.valueOf(flags);
+        Image result= (Image) fCachedImages.get(key);
+        if (result == null) {
+            ImageDescriptor desc= new CElementImageDescriptor(
+                    new ImageImageDescriptor(image), flags, new Point(20,16));
+            result= desc.createImage();
+            fCachedImages.put(key, result);
+        }
+        return result;
+    }
+
+    public Color getBackground(Object element) {
+        return null;
+    }
+
+    public Color getForeground(Object element) {
+    	if (element instanceof THNode) {
+    		THNode node= (THNode) element;
+    		if (node.isFiltered()) {
+    			return fColorInactive;
+    		}
+    	}
+    	return null;
+    }
+
+    public void setShowFiles(boolean show) {
+		fCLabelProvider.setTextFlags(show ? LABEL_OPTIONS_SHOW_FILES : LABEL_OPTIONS_SIMPLE);
+    }
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THMethodContentProvider.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THMethodContentProvider.java
new file mode 100644
index 00000000000..1e598c3d1a2
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THMethodContentProvider.java
@@ -0,0 +1,38 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import org.eclipse.jface.viewers.IStructuredContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+public class THMethodContentProvider implements IStructuredContentProvider {
+	private static final Object[] NO_CHILDREN= new Object[0];
+	private THHierarchyModel fModel; 
+
+	public THMethodContentProvider() {
+	}
+    
+    final public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+    	fModel= (THHierarchyModel) newInput;
+    }
+
+    public void dispose() {
+    	fModel= null;
+    }
+
+    final public Object[] getElements(Object inputElement) {
+    	if (fModel == null) {
+    		return NO_CHILDREN;
+    	}
+        return fModel.getMembers();
+    }
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THNode.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THNode.java
new file mode 100644
index 00000000000..fd48741dd98
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THNode.java
@@ -0,0 +1,119 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.eclipse.core.runtime.IAdaptable;
+
+import org.eclipse.cdt.core.model.ICElement;
+
+import org.eclipse.cdt.internal.ui.util.CoreUtility;
+
+public class THNode implements IAdaptable {
+	private THNode fParent;
+	private ICElement fRepresentedDecl;
+	private List fChildren= Collections.EMPTY_LIST;
+    
+    private int fHashCode;
+    private boolean fIsFiltered;
+
+    /**
+     * Creates a new node for the include browser
+     */
+    public THNode(THNode parent, ICElement decl) {
+        fParent= parent;
+        fRepresentedDecl= decl;
+        fHashCode= computeHashCode();
+    }
+    
+	private int computeHashCode() {
+        int hashCode= 0;
+        if (fParent != null) {
+            hashCode= fParent.hashCode() * 31;
+        }
+        if (fRepresentedDecl != null) {
+        	hashCode+= fRepresentedDecl.hashCode();
+        }
+        return hashCode;
+    }   
+
+    public int hashCode() {
+        return fHashCode;
+    }
+    
+    public boolean equals(Object o) {
+		if (!(o instanceof THNode)) {
+			return false;
+		}
+
+		THNode rhs = (THNode) o;
+		if (fHashCode != rhs.fHashCode) {
+			return false;
+		}
+
+		return CoreUtility.safeEquals(fRepresentedDecl, rhs.fRepresentedDecl);
+    }
+    
+	/**
+     * Returns the parent node or <code>null</code> for the root node.
+     */
+    public THNode getParent() {
+        return fParent;
+    }
+
+
+	public ICElement getRepresentedDeclaration() {
+		return fRepresentedDecl;
+	}
+	
+	public Object getAdapter(Class adapter) {
+		if (adapter.isAssignableFrom(ICElement.class)) {
+			return getRepresentedDeclaration();
+		}
+		return null;
+	}
+	
+	public boolean isFiltered() {
+		return fIsFiltered;
+	}
+
+	public void setIsFiltered(boolean val) {
+		fIsFiltered= val;
+	}
+
+	public void addChild(THNode childNode) {
+		switch(fChildren.size()) {
+		case 0:
+			fChildren= Collections.singletonList(childNode);
+			break;
+		case 1:
+			fChildren= new ArrayList(fChildren);
+			fChildren.add(childNode);
+			break;
+		default:
+			fChildren.add(childNode);
+			break;
+		}
+	}
+
+	public boolean hasChildren() {
+		return !fChildren.isEmpty();
+	}
+
+	public Object[] getChildren() {
+		return fChildren.toArray();
+	}
+}
+
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THSchedulingRule.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THSchedulingRule.java
new file mode 100644
index 00000000000..aaf9000e30f
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THSchedulingRule.java
@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import org.eclipse.core.runtime.jobs.ISchedulingRule;
+
+public class THSchedulingRule implements ISchedulingRule {
+
+	public boolean contains(ISchedulingRule rule) {
+		return rule==this;
+	}
+
+	public boolean isConflicting(ISchedulingRule rule) {
+		return rule==this;
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THViewPart.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THViewPart.java
new file mode 100644
index 00000000000..016ca6b73eb
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/THViewPart.java
@@ -0,0 +1,863 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.action.IMenuListener;
+import org.eclipse.jface.action.IMenuManager;
+import org.eclipse.jface.action.IToolBarManager;
+import org.eclipse.jface.action.MenuManager;
+import org.eclipse.jface.action.Separator;
+import org.eclipse.jface.action.ToolBarManager;
+import org.eclipse.jface.util.LocalSelectionTransfer;
+import org.eclipse.jface.viewers.IOpenListener;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionChangedListener;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.jface.viewers.OpenEvent;
+import org.eclipse.jface.viewers.SelectionChangedEvent;
+import org.eclipse.jface.viewers.StructuredSelection;
+import org.eclipse.jface.viewers.StructuredViewer;
+import org.eclipse.jface.viewers.TableViewer;
+import org.eclipse.jface.viewers.TreeViewer;
+import org.eclipse.jface.viewers.ViewerSorter;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.CLabel;
+import org.eclipse.swt.custom.SashForm;
+import org.eclipse.swt.custom.ViewForm;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.DropTarget;
+import org.eclipse.swt.dnd.Transfer;
+import org.eclipse.swt.events.ControlEvent;
+import org.eclipse.swt.events.ControlListener;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.layout.FillLayout;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Menu;
+import org.eclipse.swt.widgets.Text;
+import org.eclipse.swt.widgets.ToolBar;
+import org.eclipse.ui.IActionBars;
+import org.eclipse.ui.IMemento;
+import org.eclipse.ui.IViewSite;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.IWorkbenchPartSite;
+import org.eclipse.ui.IWorkingSet;
+import org.eclipse.ui.PartInitException;
+import org.eclipse.ui.actions.ActionFactory;
+import org.eclipse.ui.part.PageBook;
+import org.eclipse.ui.part.ViewPart;
+
+import com.ibm.icu.text.MessageFormat;
+
+import org.eclipse.cdt.core.model.CModelException;
+import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.refactoring.actions.CRefactoringActionGroup;
+import org.eclipse.cdt.ui.CUIPlugin;
+import org.eclipse.cdt.ui.actions.OpenViewActionGroup;
+
+import org.eclipse.cdt.internal.ui.CPluginImages;
+import org.eclipse.cdt.internal.ui.IContextMenuConstants;
+import org.eclipse.cdt.internal.ui.search.actions.SelectionSearchGroup;
+import org.eclipse.cdt.internal.ui.viewsupport.AdaptingSelectionProvider;
+import org.eclipse.cdt.internal.ui.viewsupport.CElementLabels;
+import org.eclipse.cdt.internal.ui.viewsupport.CUILabelProvider;
+import org.eclipse.cdt.internal.ui.viewsupport.EditorOpener;
+import org.eclipse.cdt.internal.ui.viewsupport.SelectionProviderMediator;
+
+/**
+ * The view part for the include browser.
+ */
+public class THViewPart extends ViewPart {
+	private static final int MAX_HISTORY_SIZE = 10;
+    private static final String TRUE = String.valueOf(true);
+//    private static final String KEY_WORKING_SET_FILTER = "workingSetFilter"; //$NON-NLS-1$
+    private static final String KEY_SHOW_FILES= "showFilesInLabels"; //$NON-NLS-1$
+    private static final String KEY_MODE= "hierarchyMode"; //$NON-NLS-1$
+    private static final String KEY_ORIENTATION= "viewOrientation"; //$NON-NLS-1$
+	private static final String KEY_SPLITTER_W1 = "splitterWeight1"; //$NON-NLS-1$
+	private static final String KEY_SPLITTER_W2 = "splitterWeight2"; //$NON-NLS-1$
+
+	// constants for view orientation
+	private static final int ORIENTATION_AUTOMATIC = 0;
+	private static final int ORIENTATION_HORIZONTAL = 1;
+	private static final int ORIENTATION_VERTICAL = 2;
+	private static final int ORIENTATION_SINGLE = 3;
+	private static final int METHOD_LABEL_OPTIONS_SIMPLE = CElementLabels.M_PARAMETER_TYPES;
+//	private static final int METHOD_LABEL_OPTIONS_QUALIFIED = METHOD_LABEL_OPTIONS_SIMPLE | CElementLabels.M_FULLY_QUALIFIED;
+    
+    private IMemento fMemento;
+    private boolean fShowsMessage= true;
+	private int fCurrentViewOrientation= -1;
+	private boolean fInComputeOrientation= false;
+
+	private ArrayList fHistoryEntries= new ArrayList(MAX_HISTORY_SIZE);
+
+    // widgets
+    private PageBook fPagebook;
+    private Composite fInfoPage;
+    private Text fInfoText;
+	private SashForm fSplitter;
+	private ViewForm fHierarchyViewForm;
+	private ViewForm fMethodViewForm;
+	private CLabel fMethodLabel;
+
+    // viewers
+	private THHierarchyModel fModel;
+	private THLabelProvider fHierarchyLabelProvider;
+	private CUILabelProvider fMethodLabelProvider;
+	private TableViewer fMethodViewer;
+	private TreeViewer fHierarchyTreeViewer;
+
+    // filters, sorter
+//	private WorkingSetFilterUI fWorkingSetFilterUI;
+
+    // actions
+	private ToolBarManager fMethodToolbarManager;
+    private Action fShowSuperTypeHierarchyAction;
+    private Action fShowSubTypeHierarchyAction;
+    private Action fShowTypeHierarchyAction;
+    private Action fShowFilesInLabelsAction;
+    private Action fRefreshAction;
+    private Action fCancelAction;
+	private Action fHistoryAction;
+	private Action fOpenElement;
+	private Action fHorizontalOrientation;
+	private Action fVerticalOrientation;
+	private Action fAutomaticOrientation;
+	private Action fSingleOrientation;
+	
+	// action groups
+	private OpenViewActionGroup fOpenViewActionGroup;
+	private SelectionSearchGroup fSelectionSearchGroup;
+	private CRefactoringActionGroup fRefactoringActionGroup;
+	private int fIgnoreSelectionChanges= 0;
+
+    
+    public void setFocus() {
+        fPagebook.setFocus();
+    }
+
+    public void setMessage(String msg) {
+        fInfoText.setText(msg);
+        fPagebook.showPage(fInfoPage);
+        fShowsMessage= true;
+        updateDescription();
+        updateActionEnablement();
+    }
+    
+    public void setInput(ICElement input) {
+    	if (input == null) {
+            setMessage(Messages.THViewPart_instruction);
+            fHierarchyTreeViewer.setInput(null);
+            fMethodViewer.setInput(null);
+            return;
+    	}
+        fShowsMessage= false;
+        fModel.setInput(input);
+        fHierarchyTreeViewer.setInput(fModel);
+        fMethodViewer.setInput(fModel);
+        fPagebook.showPage(fSplitter);
+        updateDescription();
+    	updateHistory(input);
+    	updateActionEnablement();
+    	fModel.computeGraph();
+    }
+
+	public void createPartControl(Composite parent) {
+        fPagebook = new PageBook(parent, SWT.NULL);
+        fPagebook.setLayoutData(new GridData(GridData.FILL_BOTH));
+        createInfoPage();
+        createViewerPage();
+                
+        initSelectionProvider();
+
+        initDragAndDrop();
+        createActions();
+        createContextMenu();
+
+        setMessage(Messages.THViewPart_instruction);
+        initializeActionStates();
+    }
+	
+	private void initSelectionProvider() {
+		SelectionProviderMediator mediator= new SelectionProviderMediator();
+		mediator.addViewer(fHierarchyTreeViewer);
+		mediator.addViewer(fMethodViewer);
+		getSite().setSelectionProvider(new AdaptingSelectionProvider(ICElement.class, mediator));
+	}
+
+	public void dispose() {
+		if (fOpenViewActionGroup != null) {
+			fOpenViewActionGroup.dispose();
+			fOpenViewActionGroup= null;
+		}
+		if (fSelectionSearchGroup != null) {
+			fSelectionSearchGroup.dispose();
+			fSelectionSearchGroup= null;
+		}
+		if (fRefactoringActionGroup != null) {
+			fRefactoringActionGroup.dispose();
+			fRefactoringActionGroup= null;
+		}
+//		if (fWorkingSetFilterUI != null) {
+//			fWorkingSetFilterUI.dispose();
+//			fWorkingSetFilterUI= null;
+//		}
+		super.dispose();
+	}
+	
+    private void initializeActionStates() {
+        int mode= THHierarchyModel.TYPE_HIERARCHY;
+        int orientation= ORIENTATION_AUTOMATIC;
+        boolean showFiles= false;
+        int[] weights= {35,65};
+        
+        if (fMemento != null) {
+            showFiles= TRUE.equals(fMemento.getString(KEY_SHOW_FILES));
+            Integer intval= fMemento.getInteger(KEY_MODE);
+            if (intval != null) {
+            	mode= intval.intValue();
+            }
+            intval= fMemento.getInteger(KEY_ORIENTATION);
+            if (intval != null) {
+            	orientation= intval.intValue();
+            }
+            intval= fMemento.getInteger(KEY_SPLITTER_W1);
+            Integer intval2= fMemento.getInteger(KEY_SPLITTER_W2);
+            if (intval != null && intval2 != null) {
+            	weights[0]= intval.intValue();
+            	weights[1]= intval2.intValue();
+            }
+        }
+        restoreOrientation(orientation);
+        restoreHierarchyKind(mode);
+		fSplitter.setWeights(weights);
+
+		fHierarchyLabelProvider.setShowFiles(showFiles);
+        fShowFilesInLabelsAction.setChecked(showFiles);
+  
+		fMethodToolbarManager.update(true);
+    }
+
+	public void init(IViewSite site, IMemento memento) throws PartInitException {
+        fMemento= memento;
+        super.init(site, memento);
+    }
+
+
+    public void saveState(IMemento memento) {
+//        if (fWorkingSetFilterUI != null) {
+//        	fWorkingSetFilterUI.saveState(memento, KEY_WORKING_SET_FILTER);
+//        }
+        memento.putString(KEY_SHOW_FILES, String.valueOf(fShowFilesInLabelsAction.isChecked()));
+		int[] weights= fSplitter.getWeights();
+        memento.putInteger(KEY_SPLITTER_W1, weights[0]);
+        memento.putInteger(KEY_SPLITTER_W2, weights[1]);
+        if (fAutomaticOrientation.isChecked()) {
+        	memento.putInteger(KEY_ORIENTATION, ORIENTATION_AUTOMATIC);
+        }
+        else {
+        	memento.putInteger(KEY_ORIENTATION, fCurrentViewOrientation);
+        }
+        super.saveState(memento);
+    }
+
+    private void createContextMenu() {
+        IWorkbenchPartSite site = getSite();
+    	
+        // hierarchy
+    	MenuManager manager = new MenuManager();
+    	manager.setRemoveAllWhenShown(true);
+    	manager.addMenuListener(new IMenuListener() {
+    		public void menuAboutToShow(IMenuManager m) {
+    			onContextMenuAboutToShow(m, true);
+    		}
+    	});
+    	Menu menu = manager.createContextMenu(fHierarchyTreeViewer.getControl());
+    	fHierarchyTreeViewer.getControl().setMenu(menu);
+    	site.registerContextMenu(CUIPlugin.ID_TYPE_HIERARCHY, manager, fHierarchyTreeViewer); 
+
+    	
+    	manager = new MenuManager();
+    	manager.setRemoveAllWhenShown(true);
+    	manager.addMenuListener(new IMenuListener() {
+    		public void menuAboutToShow(IMenuManager m) {
+    			onContextMenuAboutToShow(m, false);
+    		}
+    	});
+    	menu = manager.createContextMenu(fMethodViewer.getControl());
+    	fMethodViewer.getControl().setMenu(menu);
+    	site.registerContextMenu(CUIPlugin.ID_TYPE_HIERARCHY + ".methods", manager, fMethodViewer); //$NON-NLS-1$
+    }
+
+	protected void onContextMenuAboutToShow(IMenuManager menu, boolean hierarchyView) {
+		CUIPlugin.createStandardGroups(menu);
+		StructuredViewer viewer= hierarchyView ? (StructuredViewer) fHierarchyTreeViewer : fMethodViewer;
+		final ICElement elem= selectionToElement(viewer.getSelection());
+		if (elem != null) {
+			menu.appendToGroup(IContextMenuConstants.GROUP_OPEN, fOpenElement);
+			if (hierarchyView && !elem.equals(fModel.getInput())) {
+				String label= MessageFormat.format(Messages.THViewPart_FocusOn, 
+						new Object[] {
+							CElementLabels.getTextLabel(elem, CElementLabels.ALL_FULLY_QUALIFIED | CElementLabels.M_PARAMETER_TYPES)
+				});
+				menu.appendToGroup(IContextMenuConstants.GROUP_OPEN, new Action(label) {
+					public void run() {
+						setInput(elem);
+					}
+				});
+			}
+		}
+		
+		// action groups
+		ISelection selection = getSite().getSelectionProvider().getSelection();
+		if (OpenViewActionGroup.canActionBeAdded(selection)){
+			fOpenViewActionGroup.fillContextMenu(menu);
+		}
+
+		if (SelectionSearchGroup.canActionBeAdded(selection)){
+			fSelectionSearchGroup.fillContextMenu(menu);
+		}
+		fRefactoringActionGroup.fillContextMenu(menu);
+	}
+
+	private void createViewerPage() {
+		fSplitter= new SashForm(fPagebook, SWT.VERTICAL);
+		fSplitter.setLayoutData(new GridData(GridData.FILL_BOTH));
+		fSplitter.addControlListener(new ControlListener() {
+			public void controlMoved(ControlEvent e) {
+			}
+			public void controlResized(ControlEvent e) {
+				if (fAutomaticOrientation.isChecked()) {
+					setOrientation(ORIENTATION_AUTOMATIC);
+				}
+			}
+		});
+
+		fHierarchyViewForm= new ViewForm(fSplitter, SWT.NONE);
+		Control hierarchyControl= createHierarchyControl(fHierarchyViewForm);
+		fHierarchyViewForm.setContent(hierarchyControl);
+				
+		fMethodViewForm= new ViewForm(fSplitter, SWT.NONE);
+		Control methodControl= createMethodControl(fMethodViewForm);
+		fMethodViewForm.setContent(methodControl);
+		
+		fMethodLabel = new CLabel(fMethodViewForm, SWT.NONE);
+    	fMethodLabel.setText(Messages.THViewPart_MethodPane_title); 
+		fMethodViewForm.setTopLeft(fMethodLabel);
+	}
+   
+	private Control createMethodControl(ViewForm parent) {
+		fMethodLabelProvider= new CUILabelProvider(METHOD_LABEL_OPTIONS_SIMPLE, 0);
+		fMethodViewer = new TableViewer(parent, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
+		fMethodViewer.setContentProvider(new THMethodContentProvider());
+		fMethodViewer.setLabelProvider(fMethodLabelProvider);
+		fMethodViewer.addOpenListener(new IOpenListener() {
+			public void open(OpenEvent event) {
+				onOpenElement(event.getSelection());
+			}
+		});
+    	fMethodViewer.addSelectionChangedListener(new ISelectionChangedListener() {
+			public void selectionChanged(final SelectionChangedEvent event) {
+				onMethodSelectionChanged(event);
+			}
+    	});
+    	fMethodViewer.setSorter(new ViewerSorter() {
+    		public int category(Object element) {
+    			if (element instanceof ICElement) {
+    				ICElement celem= (ICElement)element;
+    				switch (celem.getElementType()) {
+    					case ICElement.C_FIELD: return 1;
+    				}
+    			}
+    			return 10;
+    		}
+    	});   
+        
+		ToolBar methodToolBar= new ToolBar(parent, SWT.FLAT | SWT.WRAP);
+		parent.setTopCenter(methodToolBar);
+		fMethodToolbarManager= new ToolBarManager(methodToolBar);
+    	return fMethodViewer.getControl();
+	}
+
+	protected void onMethodSelectionChanged(SelectionChangedEvent event) {
+		if (fIgnoreSelectionChanges == 0) {
+		}
+	}
+
+	private Control createHierarchyControl(ViewForm parent) {
+		Display display= getSite().getShell().getDisplay();
+		fModel= new THHierarchyModel(this, display);
+		fHierarchyLabelProvider= new THLabelProvider(display, fModel);
+    	fHierarchyTreeViewer = new TreeViewer(parent, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
+    	fHierarchyTreeViewer.setContentProvider(new THContentProvider());
+    	fHierarchyTreeViewer.setLabelProvider(fHierarchyLabelProvider);
+    	fHierarchyTreeViewer.setSorter(new ViewerSorter());
+    	fHierarchyTreeViewer.setUseHashlookup(true);
+    	fHierarchyTreeViewer.addOpenListener(new IOpenListener() {
+			public void open(OpenEvent event) {
+				onOpenElement(event.getSelection());
+			}
+		});
+
+    	fHierarchyTreeViewer.addSelectionChangedListener(new ISelectionChangedListener() {
+			public void selectionChanged(final SelectionChangedEvent event) {
+				onHierarchySelectionChanged(event);
+			}
+    	});
+    	    	    
+    	return fHierarchyTreeViewer.getControl();
+   	}	
+
+    protected void onHierarchySelectionChanged(SelectionChangedEvent event) {
+		if (fIgnoreSelectionChanges == 0) {
+			THNode node= selectionToNode(event.getSelection());
+			fModel.onHierarchySelectionChanged(node);
+			fMethodViewer.refresh();
+		}
+	}
+
+	private void createInfoPage() {
+        fInfoPage = new Composite(fPagebook, SWT.NULL);
+        fInfoPage.setLayoutData(new GridData(GridData.FILL_BOTH));
+        fInfoPage.setSize(100, 100);
+        fInfoPage.setLayout(new FillLayout());
+
+        fInfoText= new Text(fInfoPage, SWT.WRAP | SWT.READ_ONLY); 
+    }
+
+    private void initDragAndDrop() {
+        THDropTargetListener dropListener= new THDropTargetListener(this);
+        Transfer[] localSelectionTransfer= new Transfer[] {
+        		LocalSelectionTransfer.getTransfer()
+        };
+        DropTarget dropTarget = new DropTarget(fPagebook, DND.DROP_COPY);
+        dropTarget.setTransfer(localSelectionTransfer);
+        dropTarget.addDropListener(dropListener);
+    }
+
+    private void createActions() {
+    	// action gruops
+    	fOpenViewActionGroup= new OpenViewActionGroup(this);
+    	fSelectionSearchGroup= new SelectionSearchGroup(getSite());
+    	fRefactoringActionGroup= new CRefactoringActionGroup(this);
+    	
+//    	fWorkingSetFilterUI= new WorkingSetFilterUI(this, fMemento, KEY_WORKING_SET_FILTER) {
+//            protected void onWorkingSetChange() {
+//                updateWorkingSetFilter(this);
+//            }
+//            protected void onWorkingSetNameChange() {
+//                updateDescription();
+//            }
+//        };
+
+		fHorizontalOrientation= new Action(Messages.THViewPart_HorizontalOrientation, IAction.AS_RADIO_BUTTON) {
+			public void run() {
+				setOrientation(ORIENTATION_HORIZONTAL);
+			}
+		};
+		CPluginImages.setImageDescriptors(fHorizontalOrientation, CPluginImages.T_LCL, CPluginImages.IMG_LCL_HORIZONTAL_ORIENTATION);
+
+		fVerticalOrientation= new Action(Messages.THViewPart_VerticalOrientation, IAction.AS_RADIO_BUTTON) {
+			public void run() {
+				setOrientation(ORIENTATION_VERTICAL);
+			}
+		};
+		CPluginImages.setImageDescriptors(fVerticalOrientation, CPluginImages.T_LCL, CPluginImages.IMG_LCL_VERTICAL_ORIENTATION);
+
+		fAutomaticOrientation= new Action(Messages.THViewPart_AutomaticOrientation, IAction.AS_RADIO_BUTTON) {
+			public void run() {
+				setOrientation(ORIENTATION_AUTOMATIC);
+			}
+		};
+		CPluginImages.setImageDescriptors(fAutomaticOrientation, CPluginImages.T_LCL, CPluginImages.IMG_LCL_AUTOMATIC_ORIENTATION);
+
+		fSingleOrientation= new Action(Messages.THViewPart_SinglePaneOrientation, IAction.AS_RADIO_BUTTON) {
+			public void run() {
+				setOrientation(ORIENTATION_SINGLE);
+			}
+		};
+		CPluginImages.setImageDescriptors(fSingleOrientation, CPluginImages.T_LCL, CPluginImages.IMG_LCL_SINGLE_ORIENTATION);
+
+		fShowTypeHierarchyAction= new Action(Messages.THViewPart_CompleteTypeHierarchy, IAction.AS_RADIO_BUTTON) {
+			public void run() {
+				if (isChecked()) {
+					onSetHierarchyKind(THHierarchyModel.TYPE_HIERARCHY);
+				}
+			}
+        };
+        fShowTypeHierarchyAction.setToolTipText(Messages.THViewPart_CompleteTypeHierarchy_tooltip);
+        CPluginImages.setImageDescriptors(fShowTypeHierarchyAction, CPluginImages.T_LCL, CPluginImages.IMG_LCL_TYPE_HIERARCHY);       
+
+		fShowSubTypeHierarchyAction= new Action(Messages.THViewPart_SubtypeHierarchy, IAction.AS_RADIO_BUTTON) {
+			public void run() {
+				if (isChecked()) {
+					onSetHierarchyKind(THHierarchyModel.SUB_TYPE_HIERARCHY);
+				}
+			}
+        };
+        fShowSubTypeHierarchyAction.setToolTipText(Messages.THViewPart_SubtypeHierarchy_tooltip);
+        CPluginImages.setImageDescriptors(fShowSubTypeHierarchyAction, CPluginImages.T_LCL, CPluginImages.IMG_LCL_SUB_TYPE_HIERARCHY);       
+
+		fShowSuperTypeHierarchyAction= new Action(Messages.THViewPart_SupertypeHierarchy, IAction.AS_RADIO_BUTTON) {
+			public void run() {
+				if (isChecked()) {
+					onSetHierarchyKind(THHierarchyModel.SUPER_TYPE_HIERARCHY);
+				}
+			}
+        };
+        fShowSuperTypeHierarchyAction.setToolTipText(Messages.THViewPart_SupertypeHierarchy_tooltip);
+        CPluginImages.setImageDescriptors(fShowSuperTypeHierarchyAction, CPluginImages.T_LCL, CPluginImages.IMG_LCL_SUPER_TYPE_HIERARCHY);       
+
+        fOpenElement= new Action(Messages.THViewPart_Open) {
+        	public void run() {
+        		onOpenElement(getSite().getSelectionProvider().getSelection());
+        	}
+        };
+        fOpenElement.setToolTipText(Messages.THViewPart_Open_tooltip);
+        
+        fShowFilesInLabelsAction= new Action(Messages.THViewPart_ShowFileNames, IAction.AS_CHECK_BOX) {
+            public void run() {
+                onShowFilesInLabels(isChecked());
+            }
+        };
+        fShowFilesInLabelsAction.setToolTipText(Messages.THViewPart_ShowFileNames_tooltip);
+
+        fRefreshAction = new Action(Messages.THViewPart_Refresh) {
+            public void run() {
+                onRefresh();
+            }
+        };
+        fRefreshAction.setToolTipText(Messages.THViewPart_Refresh_tooltip); 
+        CPluginImages.setImageDescriptors(fRefreshAction, CPluginImages.T_LCL, CPluginImages.IMG_REFRESH);       
+
+        fCancelAction = new Action(Messages.THViewPart_Cancel) {
+            public void run() {
+                onCancel();
+            }
+        };
+        fCancelAction.setToolTipText(Messages.THViewPart_Cancel_tooltip); 
+        CPluginImages.setImageDescriptors(fCancelAction, CPluginImages.T_LCL, CPluginImages.IMG_LCL_CANCEL);       
+
+        fHistoryAction = new THHistoryDropDownAction(this);
+
+        // setup action bar
+        // global action hooks
+        IActionBars actionBars = getViewSite().getActionBars();
+        fRefactoringActionGroup.fillActionBars(actionBars);
+        fOpenViewActionGroup.fillActionBars(actionBars);
+        fSelectionSearchGroup.fillActionBars(actionBars);
+        
+        actionBars.setGlobalActionHandler(ActionFactory.REFRESH.getId(), fRefreshAction);
+        actionBars.updateActionBars();
+        
+        // local toolbar
+        IToolBarManager tm = actionBars.getToolBarManager();
+        tm.add(fShowTypeHierarchyAction);
+        tm.add(fShowSuperTypeHierarchyAction);
+        tm.add(fShowSubTypeHierarchyAction);
+		tm.add(fHistoryAction);
+        tm.add(fRefreshAction);
+        tm.add(fCancelAction);
+
+        // local menu
+        IMenuManager mm = actionBars.getMenuManager();
+
+//        fWorkingSetFilterUI.fillActionBars(actionBars);
+//        mm.add(new Separator(IContextMenuConstants.GROUP_SHOW));
+        mm.add(fShowTypeHierarchyAction);
+        mm.add(fShowSuperTypeHierarchyAction);
+        mm.add(fShowSubTypeHierarchyAction);
+        mm.add(new Separator(IContextMenuConstants.GROUP_VIEWER_SETUP));
+
+        MenuManager submenu= new MenuManager(Messages.THViewPart_LayoutMenu);
+		submenu.add(fHorizontalOrientation);
+		submenu.add(fVerticalOrientation);
+		submenu.add(fAutomaticOrientation);
+		submenu.add(fSingleOrientation);
+
+		mm.appendToGroup(IContextMenuConstants.GROUP_VIEWER_SETUP, submenu);
+
+//        mm.add(fReferencedByAction);
+//        mm.add(fMakesReferenceToAction);
+        mm.add(new Separator());
+        mm.add(fShowFilesInLabelsAction);
+    }
+            
+	protected void onOpenElement(ISelection selection) {
+    	ICElement elem= selectionToElement(selection);
+    	openElement(elem);
+	}
+
+	private void openElement(ICElement elem) {
+		if (elem != null) {
+			IWorkbenchPage page= getSite().getPage();
+			try {
+				EditorOpener.open(page, elem);
+			} catch (CModelException e) {
+				CUIPlugin.getDefault().log(e);
+			}
+		}
+	}
+
+    protected void onRefresh() {
+    	fModel.refresh();
+    	updateActionEnablement();
+    }
+
+    protected void onCancel() {
+    	fModel.stopGraphComputation();
+    	updateView();
+    }
+
+    protected void onShowFilesInLabels(boolean show) {
+    	fHierarchyLabelProvider.setShowFiles(show);
+    	fHierarchyTreeViewer.refresh();
+    }
+
+    private void updateHistory(ICElement input) {
+    	if (input != null) {
+    		fHistoryEntries.remove(input);
+    		fHistoryEntries.add(0, input);
+    		if (fHistoryEntries.size() > MAX_HISTORY_SIZE) {
+    			fHistoryEntries.remove(MAX_HISTORY_SIZE-1);
+    		}
+    	}
+	}
+    
+    private void updateDescription() {
+        String message= ""; //$NON-NLS-1$
+        if (!fShowsMessage) {
+        	ICElement elem= getInput();
+            if (elem != null) {
+                String label;
+            	
+                // label
+                label= CElementLabels.getElementLabel(elem, 0);
+            	
+                // scope
+                IWorkingSet workingSet= null;
+//                workingSet= fWorkingSetFilterUI.getWorkingSet();
+            	if (workingSet == null) {	
+            		message= label;
+            	}
+            	else {
+            		String scope= workingSet.getLabel();
+                	message= MessageFormat.format("{0} - {1}", new Object[] {label, scope}); //$NON-NLS-1$
+            	}
+            }
+        }
+        setContentDescription(message);
+    }
+    
+	private void updateActionEnablement() {
+		fHistoryAction.setEnabled(!fHistoryEntries.isEmpty());
+		fRefreshAction.setEnabled(!fShowsMessage);
+		fCancelAction.setEnabled(!fShowsMessage && !fModel.isComputed());
+		fShowSubTypeHierarchyAction.setEnabled(!fShowsMessage);
+		fShowSuperTypeHierarchyAction.setEnabled(!fShowsMessage);
+		fShowTypeHierarchyAction.setEnabled(!fShowsMessage);
+	}
+
+//    private void updateWorkingSetFilter(WorkingSetFilterUI filterUI) {
+//    	fModel.setWorkingSetFilter(filterUI);
+//    	updateView();
+//    }
+    
+    protected void onSetHierarchyKind(int kind) {
+    	if (fModel.getHierarchyKind() != kind) {
+    		fModel.setHierarchyKind(kind);
+    		updateView();
+    	}
+    }
+
+    private void updateView() {
+    	if (!fShowsMessage) {
+    		fIgnoreSelectionChanges++;
+    		try {
+    			fHierarchyTreeViewer.refresh();
+    			fMethodViewer.refresh();
+    			updateDescription();
+    			updateActionEnablement();
+    			setSelections();
+    		}
+    		finally {
+    			fIgnoreSelectionChanges--;
+    		}
+    	}
+	}
+
+	private void setSelections() {
+		fIgnoreSelectionChanges++;
+		try {
+			THNode node= fModel.getSelectionInHierarchy();
+			if (node != null) {
+				fHierarchyTreeViewer.setSelection(new StructuredSelection(node));
+				fHierarchyTreeViewer.expandToLevel(node, 1);
+			}
+		}
+		finally {
+			fIgnoreSelectionChanges--;
+		}
+	}
+
+	private ICElement selectionToElement(ISelection selection) {
+		if (selection instanceof IStructuredSelection) {
+			IStructuredSelection ss= (IStructuredSelection) selection;
+			for (Iterator iter = ss.iterator(); iter.hasNext(); ) {
+				Object cand= iter.next();
+				if (cand instanceof ICElement) {
+					return (ICElement) cand;
+				}
+				if (cand instanceof IAdaptable) {
+					ICElement elem= (ICElement) ((IAdaptable) cand).getAdapter(ICElement.class);
+					if (elem != null) {
+						return elem;
+					}
+				}
+			}
+		}
+		return null;
+	}
+
+	private THNode selectionToNode(ISelection selection) {
+		if (selection instanceof IStructuredSelection) {
+			IStructuredSelection ss= (IStructuredSelection) selection;
+			for (Iterator iter = ss.iterator(); iter.hasNext(); ) {
+				Object cand= iter.next();
+				if (cand instanceof THNode) {
+					return (THNode) cand;
+				}
+			}
+		}
+		return null;
+	}
+
+	public Control getPageBook() {
+		return fPagebook;
+	}
+
+	public ICElement[] getHistoryEntries() {
+		return (ICElement[]) fHistoryEntries.toArray(new ICElement[fHistoryEntries.size()]);
+	}
+
+	public void setHistoryEntries(ICElement[] remaining) {
+		fHistoryEntries.clear();
+		fHistoryEntries.addAll(Arrays.asList(remaining));
+	}
+
+	public ICElement getInput() {
+        Object input= fModel.getInput();
+        if (input instanceof ICElement) {
+        	return (ICElement) input;
+        }
+        return null;
+	}
+
+	public TreeViewer getHiearchyViewer() {
+		return fHierarchyTreeViewer;
+	}
+
+	public TableViewer getMethodViewer() {
+		return fMethodViewer;
+	}
+	
+	private void restoreOrientation(int orientation) {
+		switch(orientation) {
+			case ORIENTATION_HORIZONTAL:
+				fHorizontalOrientation.setChecked(true);
+				break;
+			case ORIENTATION_VERTICAL:
+				fVerticalOrientation.setChecked(true);
+				break;
+			case ORIENTATION_SINGLE:
+				fSingleOrientation.setChecked(true);
+				break;
+			default:
+				orientation= ORIENTATION_AUTOMATIC;
+				fAutomaticOrientation.setChecked(true);
+				break;
+		}
+		setOrientation(orientation);
+	}
+	
+    private void restoreHierarchyKind(int kind) {
+		switch(kind) {
+		case THHierarchyModel.SUB_TYPE_HIERARCHY:
+			fShowSubTypeHierarchyAction.setChecked(true);
+			break;
+		case THHierarchyModel.SUPER_TYPE_HIERARCHY:
+			fShowSuperTypeHierarchyAction.setChecked(true);
+			break;
+		default:
+			kind= THHierarchyModel.TYPE_HIERARCHY;
+			fShowTypeHierarchyAction.setChecked(true);
+			break;
+		}			
+		fModel.setHierarchyKind(kind);
+	}
+
+	public void setOrientation(int orientation) {
+		if (fInComputeOrientation) {
+			return;
+		}
+		fInComputeOrientation= true;
+		try {
+			if (fCurrentViewOrientation != orientation) {
+				if (fSplitter != null && !fSplitter.isDisposed()) {
+					if (orientation == ORIENTATION_AUTOMATIC) {
+						orientation= getBestOrientation();
+					}
+					if (orientation == ORIENTATION_SINGLE) {
+						fMethodViewForm.setVisible(false);
+					} else {
+						if (fCurrentViewOrientation == ORIENTATION_SINGLE) {
+							fMethodViewForm.setVisible(true);
+						}
+						boolean horizontal= orientation == ORIENTATION_HORIZONTAL;
+						fSplitter.setOrientation(horizontal ? SWT.HORIZONTAL : SWT.VERTICAL);
+					}
+					fSplitter.layout();
+				}
+				fCurrentViewOrientation= orientation;
+			}
+		} finally {
+			fInComputeOrientation= false;
+		}
+	}
+
+	private int getBestOrientation() {
+		Point size= fSplitter.getSize();
+		if (size.x != 0 && size.y != 0) {
+			if (3*size.x < 2*size.y) 
+				return ORIENTATION_VERTICAL;
+		}
+		return ORIENTATION_HORIZONTAL;
+	}
+
+	public void onEvent(int event) {
+		switch (event) {
+		case THHierarchyModel.END_OF_COMPUTATION:
+			updateView();
+			break;
+		}		
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/TypeHierarchyUI.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/TypeHierarchyUI.java
new file mode 100644
index 00000000000..fb922ee7251
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/TypeHierarchyUI.java
@@ -0,0 +1,219 @@
+/*******************************************************************************
+ * Copyright (c) 2006, 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.typehierarchy;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.runtime.jobs.Job;
+import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.ui.IEditorInput;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.IWorkbenchWindow;
+
+import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.dom.ast.DOMException;
+import org.eclipse.cdt.core.dom.ast.IASTName;
+import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
+import org.eclipse.cdt.core.dom.ast.IBinding;
+import org.eclipse.cdt.core.dom.ast.ICompositeType;
+import org.eclipse.cdt.core.index.IIndex;
+import org.eclipse.cdt.core.index.IIndexManager;
+import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.core.model.ICProject;
+import org.eclipse.cdt.core.model.ITranslationUnit;
+import org.eclipse.cdt.core.model.IWorkingCopy;
+import org.eclipse.cdt.ui.CUIPlugin;
+
+import org.eclipse.cdt.internal.ui.actions.OpenActionUtil;
+import org.eclipse.cdt.internal.ui.editor.CEditor;
+import org.eclipse.cdt.internal.ui.util.ExceptionHandler;
+import org.eclipse.cdt.internal.ui.viewsupport.CElementLabels;
+import org.eclipse.cdt.internal.ui.viewsupport.FindNameForSelectionVisitor;
+import org.eclipse.cdt.internal.ui.viewsupport.IndexUI;
+
+public class TypeHierarchyUI {
+	private static boolean sIsJUnitTest= false;
+
+	public static void setIsJUnitTest(boolean val) {
+		sIsJUnitTest= val;
+	}
+	
+	public static THViewPart open(ICElement input, IWorkbenchWindow window) {
+        if (input != null) {
+        	return openInViewPart(window, input);
+        }
+        return null;
+    }
+
+    private static THViewPart openInViewPart(IWorkbenchWindow window, ICElement input) {
+        IWorkbenchPage page= window.getActivePage();
+        try {
+            THViewPart result= (THViewPart)page.showView(CUIPlugin.ID_TYPE_HIERARCHY);
+            result.setInput(input);
+            return result;
+        } catch (CoreException e) {
+            ExceptionHandler.handle(e, window.getShell(), Messages.TypeHierarchyUI_OpenTypeHierarchy, null); 
+        }
+        return null;        
+    }
+
+    private static THViewPart openInViewPart(IWorkbenchWindow window, ICElement[] input) {
+		ICElement elem = null;
+		switch (input.length) {
+		case 0:
+			break;
+		case 1:
+			elem = input[0];
+			break;
+		default:
+			if (sIsJUnitTest) {
+				throw new RuntimeException("ambigous input"); //$NON-NLS-1$
+			}
+			elem = OpenActionUtil.selectCElement(input, window.getShell(),
+					Messages.TypeHierarchyUI_OpenTypeHierarchy, Messages.TypeHierarchyUI_SelectFromList,
+					CElementLabels.ALL_DEFAULT | CElementLabels.MF_POST_FILE_QUALIFIED, 0);
+			break;
+		}
+		if (elem != null) {
+			return openInViewPart(window, elem);
+		}
+		return null;
+	}
+
+    public static void open(final CEditor editor, final ITextSelection sel) {
+		if (editor != null) {
+			final ICProject project= editor.getInputCElement().getCProject();
+			final IEditorInput editorInput = editor.getEditorInput();
+			final Display display= Display.getCurrent();
+			
+			Job job= new Job(Messages.TypeHierarchyUI_OpenTypeHierarchy) {
+				protected IStatus run(IProgressMonitor monitor) {
+					try {
+						final ICElement[] elems= findDefinitions(project, editorInput, sel);
+						if (elems != null && elems.length > 0) {
+							display.asyncExec(new Runnable() {
+								public void run() {
+									openInViewPart(editor.getSite().getWorkbenchWindow(), elems);
+								}});
+						}
+						return Status.OK_STATUS;
+					} 
+					catch (CoreException e) {
+						return e.getStatus();
+					}
+				}
+			};
+			job.setUser(true);
+			job.schedule();
+		}
+    }
+    
+	private static ICElement[] findDefinitions(ICProject project, IEditorInput editorInput, ITextSelection sel) throws CoreException {
+		try {
+			IIndex index= CCorePlugin.getIndexManager().getIndex(project, IIndexManager.ADD_DEPENDENCIES | IIndexManager.ADD_DEPENDENT);
+
+			index.acquireReadLock();
+			try {
+				IASTName name= getSelectedName(index, editorInput, sel);
+				if (name != null) {
+					IBinding binding= name.resolveBinding();
+					if (isValidInput(binding)) {
+						if (name.isDefinition()) {
+							ICElement elem= IndexUI.getCElementForName(project, index, name);
+							if (elem != null) {
+								return new ICElement[]{elem};
+							}
+						}
+						else {
+							ICElement[] elems= IndexUI.findAllDefinitions(index, binding);
+							if (elems.length == 0) {
+								elems= IndexUI.findAllDefinitions(index, binding);
+								if (elems.length == 0) {
+									ICElement elem= IndexUI.findAnyDeclaration(index, project, binding);
+									if (elems != null) {
+										elems= new ICElement[]{elem};
+									}
+								}
+							}
+							return elems;
+						}
+					}
+				}
+			}
+			finally {
+				if (index != null) {
+					index.releaseReadLock();
+				}
+			}
+		}
+		catch (CoreException e) {
+			CUIPlugin.getDefault().log(e);
+		} 
+		catch (DOMException e) {
+			CUIPlugin.getDefault().log(e);
+		} 
+		catch (InterruptedException e) {
+		}
+		return null;
+	}
+
+	private static IASTName getSelectedName(IIndex index, IEditorInput editorInput, ITextSelection selection) throws CoreException {
+		int selectionStart = selection.getOffset();
+		int selectionLength = selection.getLength();
+
+		IWorkingCopy workingCopy = CUIPlugin.getDefault().getWorkingCopyManager().getWorkingCopy(editorInput);
+		if (workingCopy == null)
+			return null;
+		
+		int options= ITranslationUnit.AST_SKIP_INDEXED_HEADERS;
+		IASTTranslationUnit ast = workingCopy.getAST(index, options);
+		FindNameForSelectionVisitor finder= new FindNameForSelectionVisitor(ast.getFilePath(), selectionStart, selectionLength);
+		ast.accept(finder);
+		return finder.getSelectedName();
+	}
+
+	public static boolean isValidInput(IBinding binding) {
+		if (binding instanceof ICompositeType) {
+//			|| binding instanceof ITypedef ||
+//				binding instanceof IField || binding instanceof ICPPMethod) {
+			return true;
+		}
+		return false;
+	}
+
+	public static boolean isValidInput(ICElement elem) {
+		if (elem == null) {
+			return false;
+		}
+		switch (elem.getElementType()) {
+		case ICElement.C_CLASS:
+		case ICElement.C_STRUCT:
+		case ICElement.C_UNION:
+		case ICElement.C_CLASS_DECLARATION:
+		case ICElement.C_STRUCT_DECLARATION:
+		case ICElement.C_UNION_DECLARATION:
+//		case ICElement.C_TYPEDEF:
+//		case ICElement.C_CLASS_CTOR:
+//		case ICElement.C_CLASS_DTOR:
+//		case ICElement.C_FIELD:
+//		case ICElement.C_METHOD:
+//		case ICElement.C_METHOD_DECLARATION:
+//		case ICElement.C_TEMPLATE_METHOD:
+//		case ICElement.C_TEMPLATE_METHOD_DECLARATION:
+			return true;
+		}
+		return false;
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/messages.properties b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/messages.properties
new file mode 100644
index 00000000000..b2882979981
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/typehierarchy/messages.properties
@@ -0,0 +1,43 @@
+###############################################################################
+# Copyright (c) 2007 Wind River Systems, Inc. and others.
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Eclipse Public License v1.0
+# which accompanies this distribution, and is available at
+# http://www.eclipse.org/legal/epl-v10.html
+#
+# Contributors:
+#     Markus Schorn (Wind River Systems)
+###############################################################################
+THHistoryDropDownAction_ClearHistory=Clear History
+THHistoryListAction_HistoryList_title=Type Hierarchy History
+THHistoryListAction_HistoryList_label=Select the input for the Type Hierarchy:
+THViewPart_SupertypeHierarchy_tooltip=Show the Supertype Hierarchy
+THHistoryDropDownAction_tooltip=Show History List
+THViewPart_AutomaticOrientation=Automatic View Orientation
+THHistoryListAction_Remove=Remove
+THHierarchyModel_Job_title=Open Type Hierarchy
+THViewPart_Refresh_tooltip=Refresh
+THHistoryListAction_label=Open History...
+THViewPart_instruction=To display the type hierarchy, select a type or member and select the 'Open Type Hierarchy' menu option.
+THViewPart_MethodPane_title=Content
+THViewPart_HorizontalOrientation=Horizontal View Orientation
+THViewPart_VerticalOrientation=Vertical View Orientation
+THViewPart_SinglePaneOrientation=Hierarchy View Only
+THViewPart_CompleteTypeHierarchy=Type Hieararchy
+THViewPart_CompleteTypeHierarchy_tooltip=Show the Type Hierarchy
+THViewPart_SubtypeHierarchy=Subtype Hieararchy
+THViewPart_SubtypeHierarchy_tooltip=Show the Subtype Hierarchy
+THViewPart_SupertypeHierarchy=Supertype Hieararchy
+THViewPart_Open=Open
+THViewPart_Open_tooltip=Open
+THViewPart_ShowFileNames=Show File Names
+THViewPart_Cancel_tooltip=Cancel
+THViewPart_ShowFileNames_tooltip=Show File Names
+THViewPart_Refresh=Refresh
+THViewPart_LayoutMenu=Layout
+THViewPart_FocusOn=Focus On ''{0}''
+THViewPart_Cancel=Cancel
+TypeHierarchyUI_OpenTypeHierarchy=Open Type Hierarchy
+TypeHierarchyUI_SelectFromList=Select one element from the list
+OpenTypeHierarchyAction_label=Open Type Hierarchy
+OpenTypeHierarchyAction_tooltip=Open Type Hierarchy
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/CElementLabels.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/CElementLabels.java
index 3a607452119..7864f386480 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/CElementLabels.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/CElementLabels.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2003, 2006 IBM Corporation and others.
+ * Copyright (c) 2003, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -689,7 +689,8 @@ public class CElementLabels {
 				}
 			}
 			if (isQualifier) {
-				getTypeLabel(parent, flags, buf);
+				int qflags= flags & ~MF_POST_FILE_QUALIFIED;
+				getTypeLabel(parent, qflags, buf);
 				buf.append("::"); //$NON-NLS-1$
 			}
 		}
@@ -720,6 +721,14 @@ public class CElementLabels {
 		if (elem instanceof ITemplate) {
 			getTemplateParameters((ITemplate)elem, flags, buf);
 		}
+		
+		if( getFlag(flags, MF_POST_FILE_QUALIFIED)) {
+			IPath path= elem.getPath();
+			if (path != null) {
+				buf.append( CONCAT_STRING );
+				buf.append(path.toString());
+			}
+		}
 	}
 	
 	/**
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/IndexUI.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/IndexUI.java
new file mode 100644
index 00000000000..da5e6af01d3
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/IndexUI.java
@@ -0,0 +1,191 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.viewsupport;
+
+import java.util.ArrayList;
+
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.text.Region;
+import org.eclipse.ui.IEditorInput;
+
+import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.IPositionConverter;
+import org.eclipse.cdt.core.dom.IName;
+import org.eclipse.cdt.core.dom.ast.DOMException;
+import org.eclipse.cdt.core.dom.ast.IASTFileLocation;
+import org.eclipse.cdt.core.dom.ast.IASTName;
+import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
+import org.eclipse.cdt.core.dom.ast.IBinding;
+import org.eclipse.cdt.core.index.IIndex;
+import org.eclipse.cdt.core.index.IIndexBinding;
+import org.eclipse.cdt.core.index.IIndexFile;
+import org.eclipse.cdt.core.index.IIndexFileLocation;
+import org.eclipse.cdt.core.index.IIndexName;
+import org.eclipse.cdt.core.index.IndexLocationFactory;
+import org.eclipse.cdt.core.model.CModelException;
+import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.core.model.ICProject;
+import org.eclipse.cdt.core.model.ISourceRange;
+import org.eclipse.cdt.core.model.ISourceReference;
+import org.eclipse.cdt.core.model.ITranslationUnit;
+import org.eclipse.cdt.core.model.IWorkingCopy;
+import org.eclipse.cdt.ui.CUIPlugin;
+
+import org.eclipse.cdt.internal.core.model.ext.CElementHandleFactory;
+import org.eclipse.cdt.internal.corext.util.CModelUtil;
+
+public class IndexUI {
+	private static final ICElement[] EMPTY_ELEMENTS = new ICElement[0];
+
+	public static IIndexBinding elementToBinding(IIndex index, ICElement element) throws CoreException {
+		IIndexName name= elementToName(index, element);
+		if (name != null) {
+			return index.findBinding(name);
+		}
+		return null;
+	}
+
+	public static IIndexName elementToName(IIndex index, ICElement element) throws CoreException {
+		if (element instanceof ISourceReference) {
+			ISourceReference sf = ((ISourceReference)element);
+			ITranslationUnit tu= sf.getTranslationUnit();
+			if (tu != null) {
+				IIndexFileLocation location= IndexLocationFactory.getIFL(tu);
+				if (location != null) {
+					IIndexFile file= index.getFile(location);
+					if (file != null) {
+						String elementName= element.getElementName();
+						int idx= elementName.lastIndexOf(":")+1; //$NON-NLS-1$
+						ISourceRange pos= sf.getSourceRange();
+						IRegion region= new Region(pos.getIdStartPos()+idx, pos.getIdLength());
+						IPositionConverter converter= CCorePlugin.getPositionTrackerManager().findPositionConverter(tu, file.getTimestamp());
+						if (converter != null) {
+							region= converter.actualToHistoric(region);
+						}
+						IIndexName[] names= file.findNames(region.getOffset(), region.getLength());
+						for (int i = 0; i < names.length; i++) {
+							IIndexName name = names[i];
+							if (!name.isReference() && elementName.endsWith(new String(name.toCharArray()))) {
+								return name;
+							}
+						}
+					}
+				}
+			}
+		}
+		return null;
+	}
+
+	public static ICElement[] findRepresentative(IIndex index, IBinding binding)
+		throws CoreException, DOMException {
+		ICElement[] defs = IndexUI.findAllDefinitions(index, binding);
+		if (defs.length == 0) {
+			ICElement elem = IndexUI.findAnyDeclaration(index, null, binding);
+			if (elem != null) {
+				defs = new ICElement[] { elem };
+			}
+		}
+		return defs;
+	}
+
+	public static ICElement[] findAllDefinitions(IIndex index, IBinding binding) throws CoreException, DOMException {
+		if (binding != null) {
+			IIndexName[] defs= index.findDefinitions(binding);
+
+			ArrayList result= new ArrayList();
+			for (int i = 0; i < defs.length; i++) {
+				IIndexName in = defs[i];
+				ICElement definition= getCElementForName(null, index, in);
+				if (definition != null) {
+					result.add(definition);
+				}
+				
+			}
+			return (ICElement[]) result.toArray(new ICElement[result.size()]);
+		}
+		return EMPTY_ELEMENTS;
+	}
+			
+	public static ICElement getCElementForName(ICProject preferProject, IIndex index, IASTName declName) throws CoreException, DOMException {
+		assert !declName.isReference();
+		IBinding binding= declName.resolveBinding();
+		if (binding != null) {
+			ITranslationUnit tu= getTranslationUnit(preferProject, declName);
+			if (tu != null) {
+				IFile file= (IFile) tu.getResource();
+				long timestamp= file.getLocalTimeStamp();
+				IASTFileLocation loc= declName.getFileLocation();
+				IRegion region= new Region(loc.getNodeOffset(), loc.getNodeLength());
+				IPositionConverter converter= CCorePlugin.getPositionTrackerManager().findPositionConverter(file, timestamp);
+				if (converter != null) {
+					region= converter.actualToHistoric(region);
+				}
+				return CElementHandleFactory.create(tu, binding, region, timestamp);
+			}
+		}
+		return null;
+	}
+	
+	private static ITranslationUnit getTranslationUnit(ICProject cproject, IName name) {
+		IPath path= Path.fromOSString(name.getFileLocation().getFileName());
+		try {
+			return CModelUtil.findTranslationUnitForLocation(path, cproject);
+		} catch (CModelException e) {
+			CUIPlugin.getDefault().log(e);
+			return null;
+		}
+	}
+
+	public static ICElement getCElementForName(ICProject preferProject, IIndex index, IIndexName declName) throws CoreException, DOMException {
+		assert !declName.isReference();
+		ITranslationUnit tu= getTranslationUnit(preferProject, declName);
+		if (tu != null) {
+			IRegion region= new Region(declName.getNodeOffset(), declName.getNodeLength());
+			long timestamp= declName.getFile().getTimestamp();
+			return CElementHandleFactory.create(tu, index.findBinding(declName), region, timestamp);
+		}
+		return null;
+	}
+
+	public static ICElement findAnyDeclaration(IIndex index, ICProject preferProject, IBinding binding) throws CoreException, DOMException {
+		if (binding != null) {
+			IIndexName[] names= index.findNames(binding, IIndex.FIND_DECLARATIONS);
+			for (int i = 0; i < names.length; i++) {
+				ICElement elem= getCElementForName(preferProject, index, names[i]);
+				if (elem != null) {
+					return elem;
+				}
+			}
+		}
+		return null;
+	}
+
+	public static IASTName getSelectedName(IIndex index, IEditorInput editorInput, ITextSelection selection) throws CoreException {
+		int selectionStart = selection.getOffset();
+		int selectionLength = selection.getLength();
+
+		IWorkingCopy workingCopy = CUIPlugin.getDefault().getWorkingCopyManager().getWorkingCopy(editorInput);
+		if (workingCopy == null)
+			return null;
+		
+		int options= ITranslationUnit.AST_SKIP_INDEXED_HEADERS;
+		IASTTranslationUnit ast = workingCopy.getAST(index, options);
+		FindNameForSelectionVisitor finder= new FindNameForSelectionVisitor(ast.getFilePath(), selectionStart, selectionLength);
+		ast.accept(finder);
+		return finder.getSelectedName();
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/SelectionProviderMediator.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/SelectionProviderMediator.java
new file mode 100644
index 00000000000..4bc615d8f71
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/viewsupport/SelectionProviderMediator.java
@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+
+package org.eclipse.cdt.internal.ui.viewsupport;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.eclipse.core.runtime.ListenerList;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionChangedListener;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.jface.viewers.SelectionChangedEvent;
+import org.eclipse.jface.viewers.StructuredSelection;
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.swt.events.FocusEvent;
+import org.eclipse.swt.events.FocusListener;
+import org.eclipse.swt.widgets.Control;
+
+public class SelectionProviderMediator implements ISelectionProvider {
+	private Map fProviders= new HashMap();
+	private ISelectionProvider fActiveProvider = null;
+	private ISelectionChangedListener fSelectionChangedListener;
+	private FocusListener fFocusListener;
+
+    private ListenerList fListenerList= new ListenerList();
+
+	public SelectionProviderMediator() {
+		fSelectionChangedListener= new ISelectionChangedListener() {
+			public void selectionChanged(SelectionChangedEvent event) {
+				onSelectionChanged(event);
+			}
+		};
+		fFocusListener = new FocusListener() {
+			public void focusGained(FocusEvent e) {
+				onFocusGained(e);
+			}
+			public void focusLost(FocusEvent e) {
+			}
+		};
+	}
+
+    final public void addSelectionChangedListener(ISelectionChangedListener listener) {
+    	fListenerList.add(listener);
+    }
+
+    final public void removeSelectionChangedListener(ISelectionChangedListener listener) {
+    	fListenerList.remove(listener);
+    }
+
+	final protected void fireSelectionChanged() {
+		Object[] listeners= fListenerList.getListeners();
+		if (listeners.length > 0) {
+			SelectionChangedEvent event= new SelectionChangedEvent(this, getSelection());
+			
+			for (int i = 0; i < listeners.length; i++) {
+				ISelectionChangedListener listener= (ISelectionChangedListener) listeners[i];
+				listener.selectionChanged(event);
+			}
+		}
+	}
+	    
+	public void addViewer(Viewer viewer) {
+		addSelectionProvider(viewer.getControl(), viewer);
+	}
+
+	public void addSelectionProvider(Control ctrl, ISelectionProvider sp) {
+		fProviders.put(ctrl, sp);
+		sp.addSelectionChangedListener(fSelectionChangedListener);
+		ctrl.addFocusListener(fFocusListener);
+	}
+
+	// overrider
+	public ISelection getSelection() {
+		if (fActiveProvider != null) {
+			return fActiveProvider.getSelection();
+		}
+		return StructuredSelection.EMPTY;
+	}
+	// overrider
+	public void setSelection(ISelection selection) {
+		if (fActiveProvider != null) {
+			fActiveProvider.setSelection(selection);
+		}
+	}
+
+	protected void onFocusGained(FocusEvent e) {
+		ISelectionProvider provider= (ISelectionProvider) fProviders.get(e.widget);
+		if (provider != null) {
+			fActiveProvider= provider;
+			fireSelectionChanged();
+		}
+	}
+
+	protected void onSelectionChanged(SelectionChangedEvent event) {
+		if (event.getSelectionProvider() == fActiveProvider) {
+			fireSelectionChanged();
+		}
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/CUIPlugin.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/CUIPlugin.java
index b5b3d9436e9..2850bdf88c9 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/CUIPlugin.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/CUIPlugin.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2003, 2006 IBM Corporation and others.
+ * Copyright (c) 2003, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -96,6 +96,7 @@ public class CUIPlugin extends AbstractUIPlugin {
 
     public static final String ID_INCLUDE_BROWSER= PLUGIN_ID + ".includeBrowser"; //$NON-NLS-1$
     public static final String ID_CALL_HIERARCHY= PLUGIN_ID + ".callHierarchy"; //$NON-NLS-1$
+	public static final String ID_TYPE_HIERARCHY = PLUGIN_ID + ".typeHierarchy"; //$NON-NLS-1$
     
 	public static final String C_PROJECT_WIZARD_ID = PLUGIN_ID + ".wizards.StdCWizard"; //$NON-NLS-1$
 	public static final String CPP_PROJECT_WIZARD_ID = PLUGIN_ID + ".wizards.StdCCWizard"; //$NON-NLS-1$
@@ -180,12 +181,6 @@ public class CUIPlugin extends AbstractUIPlugin {
 	 */
 	public static String ID_MEMBERS_VIEW = PLUGIN_ID + ".MembersView"; //$NON-NLS-1$
 
-	/** 
-	 * The view part id of the type hierarchy part
-	 * (value <code>"org.eclipse.cdt.ui.TypeHierarchy"</code>).
-	 */ 
-	public static final String ID_TYPE_HIERARCHY = "org.eclipse.cdt.ui.TypeHierarchyView"; //$NON-NLS-1$
-
 	/**
 	 * The key to store customized templates. 
 	 * @since 3.0
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/actions/OpenViewActionGroup.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/actions/OpenViewActionGroup.java
index f15a02ccd9f..f8f95986716 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/actions/OpenViewActionGroup.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/actions/OpenViewActionGroup.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2006 IBM Corporation and others.
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -27,12 +27,15 @@ import org.eclipse.ui.dialogs.PropertyDialogAction;
 import org.eclipse.ui.part.Page;
 
 import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.ui.CUIPlugin;
 
 import org.eclipse.cdt.internal.ui.IContextMenuConstants;
 import org.eclipse.cdt.internal.ui.callhierarchy.CHViewPart;
 import org.eclipse.cdt.internal.ui.callhierarchy.OpenCallHierarchyAction;
 import org.eclipse.cdt.internal.ui.editor.CEditor;
 import org.eclipse.cdt.internal.ui.editor.ICEditorActionDefinitionIds;
+import org.eclipse.cdt.internal.ui.typehierarchy.OpenTypeHierarchyAction;
+import org.eclipse.cdt.internal.ui.typehierarchy.THViewPart;
 
 /**
  * Action group that adds actions to open a new CDT view part or an external 
@@ -47,14 +50,14 @@ import org.eclipse.cdt.internal.ui.editor.ICEditorActionDefinitionIds;
 public class OpenViewActionGroup extends ActionGroup {
 
     private boolean fEditorIsOwner;
-//	private boolean fIsTypeHiararchyViewerOwner;
+	private boolean fIsTypeHiararchyViewerOwner;
     private boolean fIsCallHiararchyViewerOwner;
 	private IWorkbenchSite fSite;
 	private String fGroupName= IContextMenuConstants.GROUP_OPEN;
 	
 //	private OpenSuperImplementationAction fOpenSuperImplementation;
 //	private OpenExternalJavadocAction fOpenExternalJavadoc;
-//	private OpenTypeHierarchyAction fOpenTypeHierarchy;
+	private OpenTypeHierarchyAction fOpenTypeHierarchy;
 	private PropertyDialogAction fOpenPropertiesDialog;
 	private OpenCallHierarchyAction fOpenCallHierarchy;
 
@@ -78,8 +81,8 @@ public class OpenViewActionGroup extends ActionGroup {
 	 */
 	public OpenViewActionGroup(IViewPart part) {
 		createSiteActions(part.getSite());
-//		fIsTypeHiararchyViewerOwner= part instanceof TypeHierarchyViewPart;
         fIsCallHiararchyViewerOwner= part instanceof CHViewPart;
+        fIsTypeHiararchyViewerOwner= part instanceof THViewPart;
 	}
 	
 	/**
@@ -96,10 +99,12 @@ public class OpenViewActionGroup extends ActionGroup {
 //		fOpenExternalJavadoc.setActionDefinitionId(IJavaEditorActionDefinitionIds.OPEN_EXTERNAL_JAVADOC);
 //		part.setAction("OpenExternalJavadoc", fOpenExternalJavadoc); //$NON-NLS-1$
 
-//		fOpenTypeHierarchy= new OpenTypeHierarchyAction(part);
-//		fOpenTypeHierarchy.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_TYPE_HIERARCHY);
-//		part.setAction("OpenTypeHierarchy", fOpenTypeHierarchy); //$NON-NLS-1$
-
+		fOpenTypeHierarchy= new OpenTypeHierarchyAction(part);
+		fOpenTypeHierarchy.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_TYPE_HIERARCHY);
+		if (useTypeHierarchy()) {
+			part.setAction("OpenTypeHierarchy", fOpenTypeHierarchy); //$NON-NLS-1$
+		}
+		
         fOpenCallHierarchy= new OpenCallHierarchyAction(part);
         fOpenCallHierarchy.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_CALL_HIERARCHY);
         part.setAction("OpenCallHierarchy", fOpenCallHierarchy); //$NON-NLS-1$
@@ -107,6 +112,10 @@ public class OpenViewActionGroup extends ActionGroup {
 		initialize(part.getEditorSite());
 	}
 
+	private boolean useTypeHierarchy() {
+		return CUIPlugin.getDefault().getPluginPreferences().getBoolean("showCtxMenuTypeHierarchy"); //$NON-NLS-1$
+	}
+
 	private void createSiteActions(IWorkbenchSite site) {
 //		fOpenSuperImplementation= new OpenSuperImplementationAction(site);
 //		fOpenSuperImplementation.setActionDefinitionId(IJavaEditorActionDefinitionIds.OPEN_SUPER_IMPLEMENTATION);
@@ -114,9 +123,9 @@ public class OpenViewActionGroup extends ActionGroup {
 //		fOpenExternalJavadoc= new OpenExternalJavadocAction(site);
 //		fOpenExternalJavadoc.setActionDefinitionId(IJavaEditorActionDefinitionIds.OPEN_EXTERNAL_JAVADOC);
 
-//		fOpenTypeHierarchy= new OpenTypeHierarchyAction(site);
-//		fOpenTypeHierarchy.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_TYPE_HIERARCHY);
-
+		fOpenTypeHierarchy= new OpenTypeHierarchyAction(site);
+		fOpenTypeHierarchy.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_TYPE_HIERARCHY);
+		
 		fOpenCallHierarchy= new OpenCallHierarchyAction(site);
         fOpenCallHierarchy.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_CALL_HIERARCHY);
 
@@ -132,7 +141,7 @@ public class OpenViewActionGroup extends ActionGroup {
 		ISelection selection= provider.getSelection();
 //		fOpenSuperImplementation.update(selection);
 //		fOpenExternalJavadoc.update(selection);
-//		fOpenTypeHierarchy.update(selection);
+		fOpenTypeHierarchy.update(selection);
 		fOpenCallHierarchy.update(selection);
 		if (!fEditorIsOwner) {
 			if (selection instanceof IStructuredSelection) {
@@ -143,7 +152,7 @@ public class OpenViewActionGroup extends ActionGroup {
 			}
 //			provider.addSelectionChangedListener(fOpenSuperImplementation);
 //			provider.addSelectionChangedListener(fOpenExternalJavadoc);
-//			provider.addSelectionChangedListener(fOpenTypeHierarchy);
+			provider.addSelectionChangedListener(fOpenTypeHierarchy);
 			provider.addSelectionChangedListener(fOpenCallHierarchy);
 			// no need to register the open properties dialog action since it registers itself
 		}
@@ -162,15 +171,18 @@ public class OpenViewActionGroup extends ActionGroup {
 	 */
 	public void fillContextMenu(IMenuManager menu) {
 		super.fillContextMenu(menu);
-//		if (!fIsTypeHiararchyViewerOwner)
-//			appendToGroup(menu, fOpenTypeHierarchy);
+		if (useTypeHierarchy() && !fIsTypeHiararchyViewerOwner && fOpenTypeHierarchy.isEnabled()) {
+			menu.appendToGroup(fGroupName, fOpenTypeHierarchy);
+		}
 		if (!fIsCallHiararchyViewerOwner && fOpenCallHierarchy.isEnabled()) {
 			menu.appendToGroup(fGroupName, fOpenCallHierarchy);
 		}
 //		appendToGroup(menu, fOpenSuperImplementation);
 		IStructuredSelection selection= getStructuredSelection();
-		if (fOpenPropertiesDialog != null && fOpenPropertiesDialog.isEnabled() && selection != null &&fOpenPropertiesDialog.isApplicableForSelection(selection)) {
-			menu.appendToGroup(IContextMenuConstants.GROUP_PROPERTIES, fOpenPropertiesDialog);
+		if (!fIsCallHiararchyViewerOwner && !fIsTypeHiararchyViewerOwner) {
+			if (fOpenPropertiesDialog != null && fOpenPropertiesDialog.isEnabled() && selection != null &&fOpenPropertiesDialog.isApplicableForSelection(selection)) {
+				menu.appendToGroup(IContextMenuConstants.GROUP_PROPERTIES, fOpenPropertiesDialog);
+			}
 		}
 	}
 
@@ -181,7 +193,7 @@ public class OpenViewActionGroup extends ActionGroup {
 		ISelectionProvider provider= fSite.getSelectionProvider();
 //		provider.removeSelectionChangedListener(fOpenSuperImplementation);
 //		provider.removeSelectionChangedListener(fOpenExternalJavadoc);
-//		provider.removeSelectionChangedListener(fOpenTypeHierarchy);
+		provider.removeSelectionChangedListener(fOpenTypeHierarchy);
 		provider.removeSelectionChangedListener(fOpenCallHierarchy);
 		if (fOpenPropertiesDialog != null) {
 			fOpenPropertiesDialog.dispose();
@@ -192,7 +204,7 @@ public class OpenViewActionGroup extends ActionGroup {
 	private void setGlobalActionHandlers(IActionBars actionBars) {
 //		actionBars.setGlobalActionHandler(JdtActionConstants.OPEN_SUPER_IMPLEMENTATION, fOpenSuperImplementation);
 //		actionBars.setGlobalActionHandler(JdtActionConstants.OPEN_EXTERNAL_JAVA_DOC, fOpenExternalJavadoc);
-//		actionBars.setGlobalActionHandler(CdtActionConstants.OPEN_TYPE_HIERARCHY, fOpenTypeHierarchy);
+		actionBars.setGlobalActionHandler(CdtActionConstants.OPEN_TYPE_HIERARCHY, fOpenTypeHierarchy);
         actionBars.setGlobalActionHandler(CdtActionConstants.OPEN_CALL_HIERARCHY, fOpenCallHierarchy);
         if (fOpenPropertiesDialog != null) {
         	actionBars.setGlobalActionHandler(ActionFactory.PROPERTIES.getId(), fOpenPropertiesDialog);