| /******************************************************************************* |
| * Copyright (c) 2005, 2012 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.bpel.ui.util; |
| |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.eclipse.bpel.model.Activity; |
| import org.eclipse.bpel.ui.Messages; |
| import org.eclipse.bpel.ui.commands.CompoundCommand; |
| import org.eclipse.bpel.ui.commands.RevalidateLinksCommand; |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.gef.Request; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.commands.UnexecutableCommand; |
| import org.eclipse.gef.requests.ChangeBoundsRequest; |
| import org.eclipse.gef.tools.DragEditPartsTracker; |
| |
| |
| /** |
| * Overridden DragEditPartsTracker to provide more intelligent |
| * behavior when dragging children that don't all have the same parent. |
| */ |
| public class BPELDragEditPartsTracker extends DragEditPartsTracker { |
| |
| public BPELDragEditPartsTracker(EditPart sourceEditPart) { |
| super(sourceEditPart); |
| } |
| |
| @Override |
| protected Command getCommand() { |
| CompoundCommand command = new CompoundCommand(Messages.BPELDragEditPartsTracker_Drag_1); |
| command.setDebugLabel("Drag Object Tracker"); //$NON-NLS-1$ |
| Iterator iter = getOperationSet().iterator(); |
| Set activitiesNeedingRevalidation = null; |
| while (iter.hasNext()) { |
| EditPart editPart = (EditPart) iter.next(); |
| Request request = getTargetRequest(); |
| |
| // make sure the request only has this particular editpart. |
| ((ChangeBoundsRequest)request).setEditParts(editPart); |
| |
| boolean isMove = editPart.getParent() == getTargetEditPart(); |
| |
| request.setType(isMove ? REQ_MOVE : REQ_ORPHAN); |
| command.add(editPart.getCommand(request)); |
| |
| if (!isMove) { |
| request.setType(REQ_ADD); |
| if (getTargetEditPart() == null) return UnexecutableCommand.INSTANCE; |
| command.add(getTargetEditPart().getCommand(getTargetRequest())); |
| } |
| |
| // remember activities whose links will need revalidating. |
| if (!isMove) { |
| Object model = editPart.getModel(); |
| if (model instanceof Activity) { |
| if (activitiesNeedingRevalidation == null) { |
| activitiesNeedingRevalidation = new HashSet(); |
| } |
| activitiesNeedingRevalidation.add(model); |
| } |
| } |
| } |
| if (activitiesNeedingRevalidation != null) { |
| command.add(new RevalidateLinksCommand(activitiesNeedingRevalidation)); |
| } |
| |
| return command; |
| } |
| } |