/******************************************************************************* | |
* 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 2.0 | |
* which accompanies this distribution, and is available at | |
* https://www.eclipse.org/legal/epl-2.0/ | |
* | |
* SPDX-License-Identifier: EPL-2.0 | |
* | |
* 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; | |
} | |
} |