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/*****************************************************************************
* Copyright (c) 2018 Christian W. Damus, CEA LIST, 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:
* Christian W. Damus - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.sequence.providers;
import java.util.OptionalInt;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.PositionConstants;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.common.core.service.AbstractProvider;
import org.eclipse.gmf.runtime.common.core.service.IOperation;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.EditPolicyRoles;
import org.eclipse.gmf.runtime.diagram.ui.figures.IBorderItemLocator;
import org.eclipse.gmf.runtime.diagram.ui.services.editpolicy.CreateEditPoliciesOperation;
import org.eclipse.gmf.runtime.diagram.ui.services.editpolicy.IEditPolicyProvider;
import org.eclipse.papyrus.uml.diagram.sequence.edit.parts.CLifeLineEditPart;
import org.eclipse.papyrus.uml.diagram.sequence.edit.policies.CustomLifelineSemanticEditPolicy;
import org.eclipse.papyrus.uml.diagram.sequence.edit.policies.TimeElementCreationFeedbackEditPolicy;
import org.eclipse.papyrus.uml.diagram.sequence.locator.TimeElementLocator;
/**
* Provider of custom edit policies for lifelines.
*/
public class CustomLifelineEditPolicyProvider extends AbstractProvider implements IEditPolicyProvider {
@Override
public boolean provides(final IOperation operation) {
if (operation instanceof CreateEditPoliciesOperation) {
final EditPart editPart = ((CreateEditPoliciesOperation) operation).getEditPart();
if (editPart instanceof CLifeLineEditPart) {
return true;
}
}
return false;
}
@Override
public void createEditPolicies(final EditPart editPart) {
CLifeLineEditPart lifeline = (CLifeLineEditPart) editPart;
editPart.installEditPolicy(EditPolicyRoles.SEMANTIC_ROLE, new CustomLifelineSemanticEditPolicy());
editPart.installEditPolicy(TimeElementCreationFeedbackEditPolicy.ROLE, new TimeElementCreationFeedbackEditPolicy(
parentFigure -> getTimeElementLocator(lifeline, parentFigure)));
}
private IBorderItemLocator getTimeElementLocator(CLifeLineEditPart lifeline, IFigure parentFigure) {
return new TimeElementLocator(parentFigure, proposedConstraints -> {
OptionalInt side = lifeline.getCreateMessageIncomingSide(proposedConstraints.getTopLeft());
return side.isPresent()
? PositionConstants.EAST_WEST ^ side.getAsInt()
: PositionConstants.CENTER;
});
}
}
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