diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CContentOutlinePage.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CContentOutlinePage.java
index 9c3864a0aaa..05523a6c818 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CContentOutlinePage.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CContentOutlinePage.java
@@ -9,6 +9,7 @@ import java.util.ArrayList;
 import java.util.Iterator;
 
 import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.cdt.internal.core.model.IWorkingCopy;
 import org.eclipse.cdt.internal.core.model.WorkingCopy;
 import org.eclipse.cdt.internal.ui.CFileElementWorkingCopy;
 import org.eclipse.cdt.internal.ui.StandardCElementLabelProvider;
@@ -48,7 +49,8 @@ import org.eclipse.ui.views.contentoutline.IContentOutlinePage;
 
 public class CContentOutlinePage extends Page implements IContentOutlinePage, ISelectionChangedListener {
 	private CEditor fEditor;
-	private WorkingCopy fInput;
+	//private WorkingCopy fInput;
+	private IWorkingCopy fInput;
 	private ProblemTreeViewer treeViewer;
 	private ListenerList selectionChangedListeners = new ListenerList();
 	private TogglePresentationAction fTogglePresentation;
@@ -285,4 +287,15 @@ public class CContentOutlinePage extends Page implements IContentOutlinePage, IS
 		if (treeViewer != null) 
 			treeViewer.setSelection(selection);
 	}
+
+	/**
+	 * @param unit
+	 */
+	public void setInput(IWorkingCopy unit) {
+		fInput = unit;
+		if (treeViewer != null) {
+			treeViewer.setInput (fInput);
+		}
+		contentUpdated();		
+	}
 }