01: /*******************************************************************************
02: * Copyright (c) 2007 IBM Corporation and others.
03: * All rights reserved. This program and the accompanying materials
04: * are made available under the terms of the Eclipse Public License v1.0
05: * which accompanies this distribution, and is available at
06: * http://www.eclipse.org/legal/epl-v10.html
07: *
08: * Contributors:
09: * IBM Corporation - initial API and implementation
10: *******************************************************************************/package org.eclipse.jdt.internal.ui.dnd;
11:
12: import org.eclipse.core.runtime.Assert;
13:
14: import org.eclipse.swt.dnd.DND;
15: import org.eclipse.swt.dnd.FileTransfer;
16: import org.eclipse.swt.dnd.Transfer;
17:
18: import org.eclipse.jface.util.DelegatingDropAdapter;
19: import org.eclipse.jface.util.TransferDropTargetListener;
20: import org.eclipse.jface.viewers.StructuredViewer;
21:
22: import org.eclipse.ui.part.PluginTransfer;
23:
24: import org.eclipse.ui.views.navigator.LocalSelectionTransfer;
25:
26: import org.eclipse.jdt.internal.ui.packageview.FileTransferDropAdapter;
27: import org.eclipse.jdt.internal.ui.packageview.PluginTransferDropAdapter;
28: import org.eclipse.jdt.internal.ui.packageview.SelectionTransferDropAdapter;
29:
30: public class JdtViewerDropSupport {
31:
32: private final StructuredViewer fViewer;
33: private final DelegatingDropAdapter fDelegatingDropAdapter;
34: private final SelectionTransferDropAdapter fReorgDropListener;
35: private boolean fStarted;
36:
37: public JdtViewerDropSupport(StructuredViewer viewer) {
38: fViewer = viewer;
39:
40: fDelegatingDropAdapter = new DelegatingDropAdapter();
41: fReorgDropListener = new SelectionTransferDropAdapter(fViewer);
42: fDelegatingDropAdapter
43: .addDropTargetListener(fReorgDropListener);
44: fDelegatingDropAdapter
45: .addDropTargetListener(new FileTransferDropAdapter(
46: fViewer));
47: fDelegatingDropAdapter
48: .addDropTargetListener(new PluginTransferDropAdapter(
49: fViewer));
50:
51: fStarted = false;
52: }
53:
54: public void addDropTargetListener(
55: TransferDropTargetListener listener) {
56: Assert.isLegal(!fStarted);
57:
58: fDelegatingDropAdapter.addDropTargetListener(listener);
59: }
60:
61: public void start() {
62: Assert.isLegal(!fStarted);
63:
64: int ops = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK
65: | DND.DROP_DEFAULT;
66:
67: Transfer[] transfers = new Transfer[] {
68: LocalSelectionTransfer.getInstance(),
69: FileTransfer.getInstance(),
70: PluginTransfer.getInstance() };
71:
72: fViewer.addDropSupport(ops, transfers, fDelegatingDropAdapter);
73:
74: fStarted = true;
75: }
76:
77: public void setFeedbackEnabled(boolean enabled) {
78: fReorgDropListener.setFeedbackEnabled(enabled);
79: }
80:
81: }
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