| /******************************************************************************* |
| * 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.team.internal.ccvs.ui; |
| |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.jface.viewers.StructuredViewer; |
| import org.eclipse.jface.viewers.ViewerDropAdapter; |
| import org.eclipse.swt.dnd.DND; |
| import org.eclipse.swt.dnd.DropTargetEvent; |
| import org.eclipse.swt.dnd.TransferData; |
| import org.eclipse.ui.part.ResourceTransfer; |
| |
| public class HistoryDropAdapter extends ViewerDropAdapter { |
| HistoryView view; |
| |
| public HistoryDropAdapter(StructuredViewer viewer, HistoryView view) { |
| super(viewer); |
| this.view = view; |
| } |
| /* |
| * Override dragOver to slam the detail to DROP_LINK, as we do not |
| * want to really execute a DROP_MOVE, although we want to respond |
| * to it. |
| */ |
| public void dragOver(DropTargetEvent event) { |
| if ((event.operations & DND.DROP_LINK) == DND.DROP_LINK) { |
| event.detail = DND.DROP_LINK; |
| } |
| super.dragOver(event); |
| } |
| /* |
| * Override drop to slam the detail to DROP_LINK, as we do not |
| * want to really execute a DROP_MOVE, although we want to respond |
| * to it. |
| */ |
| public void drop(DropTargetEvent event) { |
| super.drop(event); |
| event.detail = DND.DROP_LINK; |
| } |
| public boolean performDrop(Object data) { |
| if (data == null) return false; |
| IResource[] sources = (IResource[])data; |
| if (sources.length == 0) return false; |
| IResource resource = sources[0]; |
| if (!(resource instanceof IFile)) return false; |
| view.showHistory(resource); |
| return true; |
| } |
| public boolean validateDrop(Object target, int operation, TransferData transferType) { |
| if (transferType != null && ResourceTransfer.getInstance().isSupportedType(transferType)) { |
| return true; |
| } |
| return false; |
| } |
| } |
| |