| /****************************************************************************** |
| * Copyright (c) 2004, 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.ide.drag; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IFolder; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.views.navigator.NavigatorDragAdapter; |
| |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.drag.IDragSourceContext; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.drag.IDragSourceListener; |
| import org.eclipse.gmf.runtime.common.ui.services.dnd.ide.core.IDETransferId; |
| |
| /** |
| * Concrete class that implements the IDragSourceListener. This class handles |
| * dragging files and folder elements. |
| * |
| * @author ldamus |
| */ |
| public class ResourceDragSourceListener |
| extends NavigatorDragAdapter |
| implements IDragSourceListener { |
| |
| /** |
| * Constructs a new drag listener. |
| * |
| * @param provider |
| * the selection provider |
| */ |
| public ResourceDragSourceListener(ISelectionProvider provider) { |
| super(provider); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.common.ui.services.dnd.drag.IDragSourceListener#isDraggable(org.eclipse.gmf.runtime.common.ui.services.dnd.drag.IDragSourceContext) |
| */ |
| public boolean isDraggable(IDragSourceContext context) { |
| ISelection selection = context.getSelection(); |
| if (!(selection instanceof IStructuredSelection)) { |
| return false; |
| } |
| |
| for (Iterator i = ((IStructuredSelection) selection).iterator(); i |
| .hasNext();) { |
| Object next = i.next(); |
| if (!(next instanceof IFile || next instanceof IFolder)) { |
| if (next instanceof IAdaptable) { |
| IResource resource = (IResource) ((IAdaptable) next) |
| .getAdapter(IResource.class); |
| if (resource != null |
| && (resource.getType() == IResource.FILE || resource |
| .getType() == IResource.FOLDER)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |
| if (selection.isEmpty()) { |
| return false; |
| } |
| return true; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.common.ui.services.dnd.drag.IDragSourceListener#getSupportingTransferIds() |
| */ |
| public String[] getSupportingTransferIds() { |
| return new String[] {IDETransferId.NAV_SELECTION_TRANSFER}; |
| } |
| } |