| /****************************************************************************** |
| * Copyright (c) 2002, 2005 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.gmf.runtime.common.ui.services.dnd.drop; |
| |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.swt.dnd.DropTargetEvent; |
| |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.core.ITransferAgent; |
| |
| /** |
| * Concrete implementation of the transfer drop target adapter for the selection |
| * transfer type. |
| * |
| * @author Vishy Ramaswamy |
| */ |
| public class SelectionDropAdapter |
| extends TransferDropTargetAdapter { |
| |
| /** |
| * Constructor for SelectionDropAdapter. |
| * |
| * @param transferAgent |
| * ITransferAgent to use |
| */ |
| public SelectionDropAdapter(ITransferAgent transferAgent) { |
| super(transferAgent); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.common.ui.services.dnd.drop.ITransferDropTargetListener#canSupport(org.eclipse.swt.dnd.DropTargetEvent) |
| */ |
| public boolean canSupport(DropTargetEvent event) { |
| /* Check if the transfer data is supported */ |
| if (canSupportTransferData(event)) { |
| /* Get the selection */ |
| ISelection selection = getTransferAgent().getSelection( |
| event.currentDataType); |
| return selection != null && !selection.isEmpty() |
| && isSupportingListenerAvailable(); |
| } |
| |
| return false; |
| } |
| } |