///*******************************************************************************
// * Copyright (c) 2000, 2006 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.search.internal.ui.text;
//
//import java.util.ArrayList;
//import java.util.Collections;
//import java.util.Iterator;
//import java.util.List;
//
//import org.eclipse.core.runtime.Assert;
//
//import org.eclipse.core.resources.IResource;
//
//import org.eclipse.swt.dnd.DragSourceAdapter;
//import org.eclipse.swt.dnd.DragSourceEvent;
//import org.eclipse.swt.dnd.Transfer;
//
//import org.eclipse.jface.util.TransferDragSourceListener;
//import org.eclipse.jface.viewers.ISelection;
//import org.eclipse.jface.viewers.ISelectionProvider;
//import org.eclipse.jface.viewers.IStructuredSelection;
//
//import org.eclipse.ui.part.ResourceTransfer;
//
///**
// * A drag adapter that transfers the current selection as </code>
// * IResource</code>. Only those elements in the selection are part
// * of the transfer which can be converted into an <code>IResource
// * </code>.
// */
//public class ResourceTransferDragAdapter extends DragSourceAdapter implements TransferDragSourceListener {
//
// private ISelectionProvider fProvider;
//
// /**
// * Creates a new ResourceTransferDragAdapter for the given selection
// * provider.
// *
// * @param provider the selection provider to access the viewer's selection
// */
// public ResourceTransferDragAdapter(ISelectionProvider provider) {
// fProvider= provider;
// Assert.isNotNull(fProvider);
// }
//
// public Transfer getTransfer() {
// return ResourceTransfer.getInstance();
// }
//
// public void dragStart(DragSourceEvent event) {
// event.doit= convertSelection().size() > 0;
// }
//
// public void dragSetData(DragSourceEvent event) {
// List resources= convertSelection();
// event.data= resources.toArray(new IResource[resources.size()]);
// }
//
// public void dragFinished(DragSourceEvent event) {
// if (!event.doit)
// return;
// }
//
// private List convertSelection() {
// ISelection s= fProvider.getSelection();
// if (!(s instanceof IStructuredSelection))
// return Collections.EMPTY_LIST;
// IStructuredSelection selection= (IStructuredSelection) s;
// List result= new ArrayList(selection.size());
// for (Iterator iter= selection.iterator(); iter.hasNext();) {
// Object element= iter.next();
// if (element instanceof IResource) {
// result.add(element);
// }
// }
// return result;
// }
//}
//