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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.filesystem.ui.internal.dnd;
import org.eclipse.jface.util.LocalSelectionTransfer;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.dnd.DragSourceEvent;
import org.eclipse.swt.dnd.DragSourceListener;
/**
* The drag source listener for the file tree of Target Explorer.
*/
public class FSDragSourceListener implements DragSourceListener {
// The tree viewer in which the DnD gesture happens.
private TreeViewer viewer;
// The common dnd operation
CommonDnD dnd;
/**
* Create an FSDragSourceListener using the specified tree viewer.
*
* @param viewer The file system tree viewer.
*/
public FSDragSourceListener(TreeViewer viewer) {
this.viewer = viewer;
dnd = new CommonDnD();
}
/*
* (non-Javadoc)
* @see org.eclipse.swt.dnd.DragSourceListener#dragStart(org.eclipse.swt.dnd.DragSourceEvent)
*/
@Override
public void dragStart(DragSourceEvent event) {
IStructuredSelection aSelection = (IStructuredSelection) viewer.getSelection();
event.doit = dnd.isDraggable(aSelection);
LocalSelectionTransfer.getTransfer().setSelection(aSelection);
}
/*
* (non-Javadoc)
* @see org.eclipse.swt.dnd.DragSourceListener#dragSetData(org.eclipse.swt.dnd.DragSourceEvent)
*/
@Override
public void dragSetData(DragSourceEvent event) {
if (LocalSelectionTransfer.getTransfer().isSupportedType(event.dataType)) {
event.data = LocalSelectionTransfer.getTransfer().getSelection();
}
}
/*
* (non-Javadoc)
* @see org.eclipse.swt.dnd.DragSourceListener#dragFinished(org.eclipse.swt.dnd.DragSourceEvent)
*/
@Override
public void dragFinished(DragSourceEvent event) {
}
}
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