/*******************************************************************************
* 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);
}
}