Files View drag-and-drop v1.

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/FilesView.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/FilesView.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/FilesView.java	(revision 5183)
+++ editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/FilesView.java	(working copy)
@@ -45,6 +45,9 @@
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.TreeViewer;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.FileTransfer;
+import org.eclipse.swt.dnd.Transfer;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Menu;
@@ -59,7 +62,10 @@
 import org.eclipse.ui.ide.IDE;
 import org.eclipse.ui.model.WorkbenchLabelProvider;
 import org.eclipse.ui.part.ISetSelectionTarget;
+import org.eclipse.ui.part.PluginTransfer;
+import org.eclipse.ui.part.ResourceTransfer;
 import org.eclipse.ui.part.ViewPart;
+import org.eclipse.ui.views.navigator.LocalSelectionTransfer;
 
 import java.util.Iterator;
 
@@ -152,6 +158,8 @@
     });
     treeViewer.setInput(ResourcesPlugin.getWorkspace().getRoot());
 
+    initDragAndDrop();
+
     getSite().setSelectionProvider(treeViewer);
 
     fillInToolbar(getViewSite().getActionBars().getToolBarManager());
@@ -335,4 +343,15 @@
     return getSite().getShell();
   }
 
+  private void initDragAndDrop() {
+    int ops = DND.DROP_COPY | DND.DROP_MOVE;// | DND.DROP_LINK;
+    Transfer[] transfers = new Transfer[] {
+        LocalSelectionTransfer.getInstance(), ResourceTransfer.getInstance(),
+        FileTransfer.getInstance(), PluginTransfer.getInstance()};
+    treeViewer.addDragSupport(ops, transfers, new FilesViewDragAdapter(treeViewer));
+    FilesViewDropAdapter adapter = new FilesViewDropAdapter(treeViewer);
+    adapter.setFeedbackEnabled(true);
+    treeViewer.addDropSupport(ops | DND.DROP_DEFAULT, transfers, adapter);
+  }
+
 }