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/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
*
* 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:
* Yann Tanguy (CEA LIST) yann.tanguy@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.composite.custom.edit.policies;
import java.util.Collections;
import java.util.List;
import org.eclipse.draw2d.geometry.PrecisionRectangle;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.handles.MoveHandle;
import org.eclipse.gef.requests.ChangeBoundsRequest;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.commands.SetBoundsCommand;
import org.eclipse.gmf.runtime.diagram.ui.editparts.LabelEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.NonResizableLabelEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.l10n.DiagramUIMessages;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.notation.View;
/**
* This policy provides the selection handles, feedback and move command for
* external node label.
* The expected behavior is to provide an external label that can freely move and with a link feedback
* towards its parent figure during the move.
*/
public class ExternalLabelPrimaryDragRoleEditPolicy extends NonResizableLabelEditPolicy {
@Override
protected List<?> createSelectionHandles() {
MoveHandle mh = new MoveHandle((GraphicalEditPart)getHost());
mh.setBorder(null);
return Collections.singletonList(mh);
}
@Override
protected Command getMoveCommand(ChangeBoundsRequest request) {
LabelEditPart editPart = (LabelEditPart)getHost();
// FeedBack - Port + Delta
Rectangle updatedRect = new Rectangle();
PrecisionRectangle initialRect = new PrecisionRectangle(getInitialFeedbackBounds().getCopy());
updatedRect = initialRect.getTranslated(getHostFigure().getParent().getBounds().getLocation().getNegated());
updatedRect = updatedRect.getTranslated(request.getMoveDelta());
// translate the feedback figure
PrecisionRectangle rect = new PrecisionRectangle(getInitialFeedbackBounds().getCopy());
getHostFigure().translateToAbsolute(rect);
rect.translate(request.getMoveDelta());
rect.resize(request.getSizeDelta());
getHostFigure().translateToRelative(rect);
ICommand moveCommand = new SetBoundsCommand(editPart.getEditingDomain(), DiagramUIMessages.MoveLabelCommand_Label_Location, new EObjectAdapter((View)editPart.getModel()), updatedRect);
return new ICommandProxy(moveCommand);
}
}
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