### Eclipse Workspace Patch 1.0
#P org.eclipse.ui.navigator
Index: src/org/eclipse/ui/navigator/CommonViewer.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonViewer.java,v
retrieving revision 1.27
diff -u -r1.27 CommonViewer.java
--- src/org/eclipse/ui/navigator/CommonViewer.java	22 May 2007 19:22:21 -0000	1.27
+++ src/org/eclipse/ui/navigator/CommonViewer.java	12 Feb 2008 09:01:16 -0000
@@ -24,8 +24,11 @@
 import org.eclipse.jface.viewers.ViewerSorter;
 import org.eclipse.swt.dnd.DND;
 import org.eclipse.swt.events.DisposeEvent;
+import org.eclipse.swt.events.MouseAdapter;
+import org.eclipse.swt.events.MouseEvent;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Widget;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.internal.navigator.ContributorTrackingSet;
@@ -329,6 +332,24 @@
 		}
 	}
 	
+    /* (non-Javadoc)
+     * @see org.eclipse.jface.viewers.AbstractTreeViewer#hookEditingSupport(Control)
+     */
+    protected void hookEditingSupport(Control control) {
+        // FIXME - This caching thing should not be here; it's brittle.
+        // The underlying problem of over-calling of getSelection() should
+        // be addressed instead (see bugs 144294 and 140032)
+        // The DragStart event will come before the SelectionEvent on
+        // some platforms (GTK).  Since DragStart can turn around and
+        // call getSelection(), we need to clear the cache.
+        control.addMouseListener(new MouseAdapter() {
+            public void mouseDown(MouseEvent e) {
+                clearSelectionCache();
+            }
+        });
+    }
+
+	
 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.viewers.AbstractTreeViewer#setSelectionToWidget(java.util.List, boolean)
 	 */