| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 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 implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.authoring.ui.dnd; |
| |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.emf.edit.ui.dnd.ViewerDragAdapter; |
| import org.eclipse.epf.authoring.ui.editors.MethodElementEditorInput; |
| import org.eclipse.epf.common.utils.StrUtil; |
| import org.eclipse.epf.library.edit.util.TngUtil; |
| import org.eclipse.epf.library.util.ResourceHelper; |
| import org.eclipse.epf.uma.MethodElement; |
| import org.eclipse.epf.uma.ProcessComponent; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.dnd.DragSourceEvent; |
| import org.eclipse.swt.dnd.HTMLTransfer; |
| import org.eclipse.swt.dnd.TextTransfer; |
| import org.eclipse.ui.IEditorInput; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.PlatformUI; |
| |
| /** |
| * The drag adapter for the Library Viewer. |
| * |
| * @author Kelvin Low |
| * @since 1.0 |
| */ |
| public class LibraryViewerDragAdapter extends ViewerDragAdapter { |
| |
| /** |
| * Creates a new <code>EditorDragAdapter</code>. |
| */ |
| public LibraryViewerDragAdapter(Viewer viewer) { |
| super(viewer); |
| } |
| |
| /** |
| * Called when dragging is initiated. |
| */ |
| public void dragStart(DragSourceEvent event) { |
| super.dragStart(event); |
| event.doit = !viewer.getSelection().isEmpty(); |
| } |
| |
| /** |
| * Called to transfer the data. |
| */ |
| public void dragSetData(DragSourceEvent event) { |
| if (HTMLTransfer.getInstance().isSupportedType(event.dataType)) { |
| IStructuredSelection selection = (IStructuredSelection) viewer |
| .getSelection(); |
| Object[] selectedElements = selection.toList().toArray( |
| new Object[selection.size()]); |
| if (selectedElements != null && selectedElements.length > 0) { |
| Object selectedElement = TngUtil.unwrap(selectedElements[0]); |
| if (selectedElement instanceof MethodElement) { |
| String linkText = getHyperlink((MethodElement) selectedElement); |
| if (Platform.getOS().equals(Platform.WS_WIN32)) { |
| event.data = new String(StrUtil.getUTF8Bytes(linkText)); |
| } |
| else { |
| event.data = linkText; |
| } |
| } |
| } |
| } |
| if (TextTransfer.getInstance().isSupportedType(event.dataType)) { |
| IStructuredSelection selection = (IStructuredSelection) viewer |
| .getSelection(); |
| Object[] selectedElements = selection.toList().toArray( |
| new Object[selection.size()]); |
| if (selectedElements != null && selectedElements.length > 0) { |
| Object selectedElement = TngUtil.unwrap(selectedElements[0]); |
| if (selectedElement instanceof MethodElement) { |
| String linkText = getHyperlink((MethodElement) selectedElement); |
| if (Platform.getOS().equals(Platform.WS_WIN32)) { |
| event.data = new String(StrUtil.getUTF8Bytes(linkText)); |
| } |
| else { |
| event.data = linkText; |
| } |
| } |
| } |
| } |
| super.dragSetData(event); |
| } |
| |
| /** |
| * Returns the hyperlink for the given Method element. |
| */ |
| protected String getHyperlink(MethodElement dragElement) { |
| MethodElement dropElement = null; |
| IWorkbenchPage activePage = PlatformUI.getWorkbench() |
| .getActiveWorkbenchWindow().getActivePage(); |
| IEditorPart activeEditor = activePage.getActiveEditor(); |
| if (activeEditor != null) { |
| IEditorInput editorInput = activeEditor.getEditorInput(); |
| if (editorInput instanceof MethodElementEditorInput) { |
| dropElement = ((MethodElementEditorInput) editorInput) |
| .getMethodElement(); |
| } |
| } |
| |
| if(dragElement instanceof ProcessComponent){ |
| dragElement = ((ProcessComponent)dragElement).getProcess(); |
| } |
| |
| String href = ResourceHelper.getUrl(dragElement, dropElement, ".html"); //$NON-NLS-1$ |
| return ResourceHelper.getElementLink(dragElement, true, |
| "file://" + href); //$NON-NLS-1$ |
| } |
| |
| } |