| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.dnd.internal; |
| |
| import org.eclipse.core.resources.IWorkspace; |
| import org.eclipse.core.resources.IWorkspaceRoot; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.gef.EditPartViewer; |
| import org.eclipse.gef.Request; |
| import org.eclipse.gef.dnd.AbstractTransferDropTargetListener; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jst.jsf.common.ui.internal.guiutils.Alerts; |
| import org.eclipse.jst.pagedesigner.PDPlugin; |
| import org.eclipse.jst.pagedesigner.dnd.LocalDropRequest; |
| import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer; |
| import org.eclipse.swt.dnd.DND; |
| import org.eclipse.swt.dnd.DropTargetEvent; |
| import org.eclipse.ui.views.navigator.LocalSelectionTransfer; |
| |
| /** |
| * @author mengbo |
| */ |
| public class LocalSelectionDropTargetListener extends |
| AbstractTransferDropTargetListener { |
| /** |
| * @param viewer |
| */ |
| public LocalSelectionDropTargetListener(EditPartViewer viewer) { |
| super(viewer, LocalSelectionTransfer.getInstance()); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.dnd.AbstractTransferDropTargetListener#createTargetRequest() |
| */ |
| protected Request createTargetRequest() { |
| LocalDropRequest request = new LocalDropRequest(); |
| request.setLocation(getDropLocation()); |
| request.setLocalObject(getCurrentLocalObject()); |
| return request; |
| } |
| |
| /** |
| * @return the current local object |
| */ |
| private Object getCurrentLocalObject() { |
| ISelection sel = LocalSelectionTransfer.getInstance().getSelection(); |
| if (sel instanceof IStructuredSelection) { |
| return ((IStructuredSelection) sel).getFirstElement(); |
| } |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.dnd.AbstractTransferDropTargetListener#updateTargetRequest() |
| */ |
| protected void updateTargetRequest() { |
| LocalDropRequest dropRequest = (LocalDropRequest) getTargetRequest(); |
| dropRequest.setLocation(getDropLocation()); |
| dropRequest.setLocalObject(getCurrentLocalObject()); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gef.dnd.AbstractTransferDropTargetListener#setCurrentEvent(org.eclipse.swt.dnd.DropTargetEvent) |
| */ |
| public void setCurrentEvent(DropTargetEvent currentEvent) { |
| super.setCurrentEvent(currentEvent); |
| if (currentEvent != null) { |
| if (currentEvent.detail != DND.DROP_NONE) { |
| currentEvent.detail = DND.DROP_COPY; |
| } |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.swt.dnd.DropTargetListener#dragOperationChanged(org.eclipse.swt.dnd.DropTargetEvent) |
| */ |
| public void dragOperationChanged(DropTargetEvent event) { |
| // switch the insert or update |
| if ((event.detail & (DND.DROP_COPY)) != 0) { |
| LocalDropEditPolicy.setCheckUpdate(false); |
| } else { |
| LocalDropEditPolicy.setCheckUpdate(true); |
| } |
| super.dragOperationChanged(event); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.swt.dnd.DropTargetListener#drop(org.eclipse.swt.dnd.DropTargetEvent) |
| */ |
| public void drop(DropTargetEvent event) { |
| String path = ((IHTMLGraphicalViewer) getViewer()).getModel() |
| .getBaseLocation(); |
| IWorkspace workspace = ResourcesPlugin.getWorkspace(); |
| IWorkspaceRoot root = workspace.getRoot(); |
| IPath filePath = new Path(path); |
| if (root.getFile(filePath).exists()) { |
| getViewer().getControl().setFocus(); |
| super.drop(event); |
| LocalDropEditPolicy.setCheckUpdate(true); |
| } else { |
| Alerts alert = PDPlugin.getAlerts(); |
| alert.info("LocalSelectionDropTargetListener.MessageDialog.Title", //$NON-NLS-1$ |
| "LocalSelectionDropTargetListener.MessageDialog.Message"); //$NON-NLS-1$ |
| } |
| } |
| } |