| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.examples.readmetool; |
| |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.swt.dnd.*; |
| import org.eclipse.ui.part.PluginTransfer; |
| import org.eclipse.ui.part.PluginTransferData; |
| |
| /** |
| * A drag listener for the readme editor's content outline page. |
| * Allows dragging of content segments into views that support |
| * the <code>TextTransfer</code> or <code>PluginTransfer</code> transfer types. |
| */ |
| public class ReadmeContentOutlineDragListener extends DragSourceAdapter { |
| private ReadmeContentOutlinePage page; |
| /** |
| * Creates a new drag listener for the given page. |
| */ |
| public ReadmeContentOutlineDragListener(ReadmeContentOutlinePage page) { |
| this.page = page; |
| } |
| /* (non-Javadoc) |
| * Method declared on DragSourceListener |
| */ |
| public void dragSetData(DragSourceEvent event) { |
| if (PluginTransfer.getInstance().isSupportedType(event.dataType)) { |
| byte[] segmentData = getSegmentText().getBytes(); |
| event.data = new PluginTransferData(ReadmeDropActionDelegate.ID, segmentData); |
| return; |
| } |
| if (TextTransfer.getInstance().isSupportedType(event.dataType)) { |
| event.data = getSegmentText(); |
| return; |
| } |
| } |
| /** |
| * Returns the text of the currently selected readme segment. |
| */ |
| private String getSegmentText() { |
| StringBuffer result = new StringBuffer(); |
| ISelection selection = page.getSelection(); |
| if (selection instanceof org.eclipse.jface.viewers.IStructuredSelection) { |
| Object[] selected = ((IStructuredSelection) selection).toArray(); |
| result.append("\n"); //$NON-NLS-1$ |
| for (int i = 0; i < selected.length; i++) { |
| if (selected[i] instanceof MarkElement) { |
| result.append(((MarkElement) selected[i]).getLabel(selected[i])); |
| result.append("\n"); //$NON-NLS-1$ |
| } |
| } |
| } |
| return result.toString(); |
| } |
| } |