| /******************************************************************************* |
| * Copyright (c) 2007 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.jdt.internal.ui.dnd; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| |
| import org.eclipse.core.runtime.Assert; |
| |
| import org.eclipse.swt.dnd.DND; |
| import org.eclipse.swt.dnd.DragSourceAdapter; |
| import org.eclipse.swt.dnd.DragSourceEvent; |
| import org.eclipse.swt.dnd.Transfer; |
| |
| import org.eclipse.jface.util.TransferDragSourceListener; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| |
| import org.eclipse.ui.IEditorDescriptor; |
| import org.eclipse.ui.IEditorInput; |
| import org.eclipse.ui.IEditorRegistry; |
| import org.eclipse.ui.PartInitException; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.part.EditorInputTransfer; |
| import org.eclipse.ui.part.EditorInputTransfer.EditorInputData; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility; |
| |
| public class EditorInputTransferDragAdapter extends DragSourceAdapter implements TransferDragSourceListener { |
| |
| private ISelectionProvider fProvider; |
| private ArrayList/*<EditorInputData>*/fEditorInputDatas; |
| |
| public EditorInputTransferDragAdapter(ISelectionProvider provider) { |
| Assert.isNotNull(provider); |
| fProvider= provider; |
| } |
| |
| /* |
| * @see TransferDragSourceListener#getTransfer |
| */ |
| public Transfer getTransfer() { |
| return EditorInputTransfer.getInstance(); |
| } |
| |
| /* |
| * @see org.eclipse.swt.dnd.DragSourceListener#dragStart |
| */ |
| public void dragStart(DragSourceEvent event) { |
| fEditorInputDatas= new ArrayList(); |
| |
| ISelection selection= fProvider.getSelection(); |
| if (selection instanceof IStructuredSelection) { |
| IStructuredSelection structuredSelection= (IStructuredSelection) selection; |
| for (Iterator iter= structuredSelection.iterator(); iter.hasNext();) { |
| Object element= iter.next(); |
| IEditorInput editorInput= EditorUtility.getEditorInput(element); |
| if (editorInput != null && editorInput.getPersistable() != null) { |
| try { |
| String editorId= EditorUtility.getEditorID(editorInput); |
| // see org.eclipse.ui.internal.ide.EditorAreaDropAdapter.openNonExternalEditor(..): |
| IEditorRegistry editorReg= PlatformUI.getWorkbench().getEditorRegistry(); |
| IEditorDescriptor editorDesc= editorReg.findEditor(editorId); |
| if (editorDesc != null && !editorDesc.isOpenExternal()) { |
| fEditorInputDatas.add(EditorInputTransfer.createEditorInputData(editorId, editorInput)); |
| } |
| } catch (PartInitException e) { |
| JavaPlugin.log(e); |
| } |
| } |
| } |
| } |
| |
| event.doit= fEditorInputDatas.size() > 0; |
| } |
| |
| /* |
| * @see org.eclipse.swt.dnd.DragSourceListener#dragSetData |
| */ |
| public void dragSetData(DragSourceEvent event) { |
| if (EditorInputTransfer.getInstance().isSupportedType(event.dataType) && fEditorInputDatas.size() > 0) { |
| event.data= fEditorInputDatas.toArray(new EditorInputData[fEditorInputDatas.size()]); |
| } |
| } |
| |
| |
| /* |
| * @see org.eclipse.swt.dnd.DragSourceListener#dragFinished |
| */ |
| public void dragFinished(DragSourceEvent event) { |
| fEditorInputDatas= null; |
| Assert.isTrue(event.detail != DND.DROP_MOVE); |
| } |
| } |