From fe6577cf5a6039761ef7fcb566c11f1bf41d0ed8 Mon Sep 17 00:00:00 2001
From: Alena Laskavaia <elaskavaia.cdt@gmail.com>
Date: Mon, 28 Jul 2008 18:53:11 +0000
Subject: [PATCH] [241870] - applying patch to enable PluginTransferDrop

---
 .../eclipse/cdt/internal/ui/cview/CView.java  | 11 +++-
 .../ui/dnd/PluginTransferDropAdapter.java     | 56 +++++++++++++++++++
 2 files changed, 64 insertions(+), 3 deletions(-)
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/dnd/PluginTransferDropAdapter.java

diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/cview/CView.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/cview/CView.java
index 3e54d899d57..37058af5b52 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/cview/CView.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/cview/CView.java
@@ -74,6 +74,7 @@ import org.eclipse.ui.part.ISetSelectionTarget;
 import org.eclipse.ui.part.IShowInSource;
 import org.eclipse.ui.part.IShowInTarget;
 import org.eclipse.ui.part.IShowInTargetList;
+import org.eclipse.ui.part.PluginTransfer;
 import org.eclipse.ui.part.ResourceTransfer;
 import org.eclipse.ui.part.ShowInContext;
 import org.eclipse.ui.part.ViewPart;
@@ -102,6 +103,7 @@ import org.eclipse.cdt.internal.ui.dnd.CDTViewerDragAdapter;
 import org.eclipse.cdt.internal.ui.dnd.DelegatingDropAdapter;
 import org.eclipse.cdt.internal.ui.dnd.FileTransferDragAdapter;
 import org.eclipse.cdt.internal.ui.dnd.FileTransferDropAdapter;
+import org.eclipse.cdt.internal.ui.dnd.PluginTransferDropAdapter;
 import org.eclipse.cdt.internal.ui.dnd.ResourceTransferDragAdapter;
 import org.eclipse.cdt.internal.ui.dnd.ResourceTransferDropAdapter;
 import org.eclipse.cdt.internal.ui.dnd.TransferDragSourceListener;
@@ -380,7 +382,7 @@ public class CView extends ViewPart implements ISetSelectionTarget, IPropertyCha
 		Transfer[] transfers= new Transfer[] {
 				LocalSelectionTransfer.getInstance(),
 				ResourceTransfer.getInstance(),
-				FileTransfer.getInstance()
+				FileTransfer.getInstance(),
 		};
 		TransferDragSourceListener[] dragListeners= new TransferDragSourceListener[] {
 				new SelectionTransferDragAdapter(viewer),
@@ -395,11 +397,14 @@ public class CView extends ViewPart implements ISetSelectionTarget, IPropertyCha
 		Transfer[] transfers= new Transfer[] {
 			LocalSelectionTransfer.getInstance(),
 			ResourceTransfer.getInstance(),
-			FileTransfer.getInstance()};
+			FileTransfer.getInstance(),
+			PluginTransfer.getInstance()
+		};
 		TransferDropTargetListener[] dropListeners= new TransferDropTargetListener[] {
 			new SelectionTransferDropAdapter(viewer),
 			new ResourceTransferDropAdapter(viewer),
-			new FileTransferDropAdapter(viewer)
+			new FileTransferDropAdapter(viewer),			
+			new PluginTransferDropAdapter(viewer),
 		};
 		viewer.addDropSupport(ops, transfers, new DelegatingDropAdapter(dropListeners));
 	}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/dnd/PluginTransferDropAdapter.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/dnd/PluginTransferDropAdapter.java
new file mode 100644
index 00000000000..dd607c8a6a7
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/dnd/PluginTransferDropAdapter.java
@@ -0,0 +1,56 @@
+/*******************************************************************************
+ * Copyright (c) 2002, 2008 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
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * QNX Software Systems - Initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.cdt.internal.ui.dnd;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.jface.viewers.StructuredViewer;
+import org.eclipse.swt.dnd.DropTargetEvent;
+import org.eclipse.swt.dnd.Transfer;
+import org.eclipse.ui.part.PluginDropAdapter;
+import org.eclipse.ui.part.PluginTransfer;
+
+import org.eclipse.cdt.core.model.ICElement;
+
+/**
+ * PluginTransferDropAdapter
+ * Enable DND to support PluginTransfer type.
+ * The actual DND operation is a call back to the 
+ * org.eclipse.ui.dropActions delegate.
+ *
+ */
+
+public class PluginTransferDropAdapter extends PluginDropAdapter implements
+		TransferDropTargetListener {
+
+	public PluginTransferDropAdapter (StructuredViewer viewer) {
+		super(viewer);
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.internal.ui.dnd.TransferDropTargetListener#getTransfer()
+	 */
+	public Transfer getTransfer() {
+		return PluginTransfer.getInstance();
+	}
+
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.internal.ui.dnd.TransferDropTargetListener#isEnabled(org.eclipse.swt.dnd.DropTargetEvent)
+	 */
+	public boolean isEnabled(DropTargetEvent event) {
+		Object target= event.item != null ? event.item.getData() : null;
+		if (target == null) {
+			return false;
+		}
+		return target instanceof ICElement || target instanceof IResource;
+	}
+}