X-Git-Url: http://secure.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/JdtViewerDragAdapter.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/JdtViewerDragAdapter.java
new file mode 100644
index 0000000..2906be9
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/JdtViewerDragAdapter.java
@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.dnd;
+
+import org.eclipse.swt.dnd.DragSourceEvent;
+
+import org.eclipse.jface.util.Assert;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.jface.viewers.StructuredViewer;
+
+public class JdtViewerDragAdapter extends DelegatingDragAdapter {
+
+	private StructuredViewer fViewer;
+
+	public JdtViewerDragAdapter(StructuredViewer viewer, TransferDragSourceListener[] listeners) {
+		super(listeners);
+		Assert.isNotNull(viewer);
+		fViewer= viewer;
+	}
+	
+	public void dragStart(DragSourceEvent event) {
+		IStructuredSelection selection= (IStructuredSelection)fViewer.getSelection();
+		if (selection.isEmpty()) {
+			event.doit= false;
+			return; 
+		}
+		super.dragStart(event);
+	}
+}