| /****************************************************************************** |
| * 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.core; |
| |
| import org.eclipse.gmf.runtime.common.core.service.AbstractProvider; |
| import org.eclipse.gmf.runtime.common.core.service.IOperation; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.drag.ITransferDragSourceListener; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.drop.ITransferDropTargetListener; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.internal.core.GetTransferAdapterOperation; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.internal.core.ITransferAdapterProvider; |
| |
| /** |
| * The abstract parent of all concrete transfer adapter providers. A concrete |
| * provider needs to override the <code>getTransferDragSourceAdapter()</code> |
| * and <code>getTransferDropTargetAdapter</code> methods. The |
| * <code>provides</code> method has a default implementation. The |
| * <code>provides()</code> method is already handled by the proxy for the |
| * provider (<code>TransferAdapterService.ProviderDescriptor</code>). The |
| * proxy contains all the information necessary for the <code>provides()</code> |
| * method. |
| * |
| * @author Vishy Ramaswamy |
| */ |
| public class AbstractTransferAdapterProvider |
| extends AbstractProvider |
| implements ITransferAdapterProvider { |
| |
| /** |
| * Constructor for AbstractTransferAdapterProvider. |
| */ |
| public AbstractTransferAdapterProvider() { |
| super(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.common.ui.services.dnd.core.ITransferAdapterProvider#getTransferDragSourceAdapter(java.lang.String) |
| */ |
| public ITransferDragSourceListener getTransferDragSourceAdapter( |
| String transferId) { |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.common.ui.services.dnd.core.ITransferAdapterProvider#getTransferDropTargetAdapter(java.lang.String) |
| */ |
| public ITransferDropTargetListener getTransferDropTargetAdapter( |
| String transferId) { |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.common.core.service.IProvider#provides(org.eclipse.gmf.runtime.common.core.service.IOperation) |
| */ |
| public final boolean provides(IOperation operation) { |
| if (operation instanceof GetTransferAdapterOperation) { |
| return true; |
| } |
| |
| return false; |
| } |
| } |