| /****************************************************************************** |
| * 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.internal.core; |
| |
| import org.eclipse.gmf.runtime.common.core.service.IProvider; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.core.IDragDropListenerProvider; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.core.IDropListenerContext; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.drop.IDropTargetListener; |
| |
| /** |
| * An operation that gets the <code>IDropTargetListener</code> associated with |
| * the <code>IDropListenerContext</code> from the |
| * <code>IDragDropListenerProvider</code> |
| * |
| * @author Vishy Ramaswamy |
| */ |
| public final class GetDropListenerOperation |
| extends ListenerOperation { |
| |
| /** |
| * Constructor for GetDropListenerOperation. |
| * |
| * @param context |
| * The drop listener context |
| */ |
| public GetDropListenerOperation(IDropListenerContext context) { |
| super(context); |
| } |
| |
| /** |
| * Executes this operation on the <code>IDragDropListenerProvider</code> |
| * provider. |
| * |
| * @param provider |
| * The provider on which to execute this operation. |
| * @see org.eclipse.gmf.runtime.common.core.service.IOperation#execute(org.eclipse.gmf.runtime.common.core.service.IProvider) |
| */ |
| public Object execute(IProvider provider) { |
| if (provider instanceof IDragDropListenerProvider) { |
| /* Get the provider */ |
| IDragDropListenerProvider prov = (IDragDropListenerProvider) provider; |
| |
| /* Get the drop target listeners */ |
| IDropTargetListener[] listeners = prov |
| .getDropTargetListeners((IDropListenerContext) getContext()); |
| |
| /* Return the handler */ |
| return listeners; |
| } |
| |
| return null; |
| } |
| } |