Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-before / ui / org / eclipse / jdt / internal / ui / dnd / JdtViewerDropSupport.java

diff --git a/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/dnd/JdtViewerDropSupport.java b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/dnd/JdtViewerDropSupport.java
new file mode 100644 (file)
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--- /dev/null
+++ b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/dnd/JdtViewerDropSupport.java
@@ -0,0 +1,74 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2008 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.internal.ui.dnd;
+
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.FileTransfer;
+import org.eclipse.swt.dnd.Transfer;
+
+import org.eclipse.core.runtime.Assert;
+
+import org.eclipse.jface.util.DelegatingDropAdapter;
+import org.eclipse.jface.util.TransferDropTargetListener;
+import org.eclipse.jface.viewers.StructuredViewer;
+
+import org.eclipse.ui.part.PluginTransfer;
+import org.eclipse.ui.views.navigator.LocalSelectionTransfer;
+
+import org.eclipse.jdt.internal.ui.packageview.FileTransferDropAdapter;
+import org.eclipse.jdt.internal.ui.packageview.PluginTransferDropAdapter;
+import org.eclipse.jdt.internal.ui.packageview.SelectionTransferDropAdapter;
+
+public class JdtViewerDropSupport {
+
+       private final StructuredViewer fViewer;
+       private final DelegatingDropAdapter fDelegatingDropAdapter;
+       private final SelectionTransferDropAdapter fReorgDropListener;
+       private boolean fStarted;
+
+       public JdtViewerDropSupport(StructuredViewer viewer) {
+               fViewer= viewer;
+
+               fDelegatingDropAdapter= new DelegatingDropAdapter();
+               fReorgDropListener= new SelectionTransferDropAdapter(fViewer);
+               fDelegatingDropAdapter.addDropTargetListener(fReorgDropListener);
+               fDelegatingDropAdapter.addDropTargetListener(new FileTransferDropAdapter(fViewer));
+               fDelegatingDropAdapter.addDropTargetListener(new PluginTransferDropAdapter(fViewer));
+
+               fStarted= false;
+       }
+
+       public void addDropTargetListener(TransferDropTargetListener listener) {
+               Assert.isLegal(!fStarted);
+
+               fDelegatingDropAdapter.addDropTargetListener(listener);
+       }
+
+       public void start() {
+               Assert.isLegal(!fStarted);
+
+               int ops= DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK | DND.DROP_DEFAULT;
+
+               Transfer[] transfers= new Transfer[] {
+                       LocalSelectionTransfer.getInstance(),
+                       FileTransfer.getInstance(),
+                       PluginTransfer.getInstance()};
+
+               fViewer.addDropSupport(ops, transfers, fDelegatingDropAdapter);
+
+               fStarted= true;
+       }
+
+       public void setFeedbackEnabled(boolean enabled) {
+               fReorgDropListener.setFeedbackEnabled(enabled);
+       }
+
+}