| /******************************************************************************* |
| * Copyright (c) 2003, 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.ui.internal.navigator.dnd; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.jface.util.LocalSelectionTransfer; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.navigator.CommonDropAdapterAssistant; |
| import org.eclipse.ui.navigator.INavigatorContentService; |
| import org.eclipse.ui.part.IDropActionDelegate; |
| import org.eclipse.ui.part.PluginTransferData; |
| |
| /** |
| * |
| * |
| * @since 3.2 |
| * |
| */ |
| public class NavigatorPluginDropAction implements IDropActionDelegate { |
| |
| private static final boolean DEBUG = false; |
| |
| private static final String CN_PLUGIN_ACTION_ID = "org.eclipse.ui.navigator.PluginDropAction"; //$NON-NLS-1$ |
| |
| /** |
| * A default no-args constructor is required by the |
| * <b>org.eclipse.ui.dropAdapters</b> extension point |
| */ |
| public NavigatorPluginDropAction() { |
| super(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.part.IDropActionDelegate#run(java.lang.Object, |
| * java.lang.Object) |
| */ |
| public boolean run(Object sourceData, Object target) { |
| |
| if (DEBUG) { |
| System.out.println("NavigatorPluginDropAction.run (begin)"); //$NON-NLS-1$ |
| } |
| |
| String sourceViewerId = new String((byte[]) sourceData); |
| |
| IStructuredSelection selection = (IStructuredSelection) LocalSelectionTransfer |
| .getTransfer().getSelection(); |
| |
| INavigatorContentService contentService = NavigatorContentServiceTransfer |
| .getInstance().findService(sourceViewerId); |
| |
| if (contentService == null) { |
| return false; |
| } |
| try { |
| CommonDropAdapterAssistant[] assistants = contentService |
| .getDnDService().findCommonDropAdapterAssistants(target, |
| selection); |
| |
| IStatus valid = null; |
| for (int i = 0; i < assistants.length; i++) { |
| valid = assistants[i].validatePluginTransferDrop(selection, target); |
| if (valid != null && valid.isOK()) { |
| valid = assistants[i].handlePluginTransferDrop(selection, target); |
| return valid != null && valid.isOK(); |
| } |
| } |
| } finally { |
| NavigatorContentServiceTransfer.getInstance() |
| .unregisterContentService(contentService); |
| } |
| |
| if (DEBUG) { |
| System.out.println("NavigatorPluginDropAction.run (exit)"); //$NON-NLS-1$ |
| } |
| |
| return false; |
| } |
| |
| /** |
| * |
| * @param aContentService |
| * The associated content service that is the source of the drag |
| * @return A PluginTransferData properly configured to call the Common |
| * Navigator's PluginDropAction. |
| */ |
| public static PluginTransferData createTransferData( |
| INavigatorContentService aContentService) { |
| NavigatorContentServiceTransfer.getInstance().registerContentService( |
| aContentService); |
| return new PluginTransferData(CN_PLUGIN_ACTION_ID, aContentService |
| .getViewerId().getBytes()); |
| } |
| |
| } |