examples/org.eclipse.graphiti.examples.filesystem/src/org/eclipse/graphiti/examples/filesystem/features/AddContainmentConnectionFeature.java

/*********************************************************************
* Copyright (c) 2012, 2019 SAP SE
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* Contributors:
*    SAP SE - initial API, implementation and documentation
*
* SPDX-License-Identifier: EPL-2.0
**********************************************************************/
package org.eclipse.graphiti.examples.filesystem.features;

import org.eclipse.graphiti.features.IAddFeature;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IAddConnectionContext;
import org.eclipse.graphiti.features.context.IAddContext;
import org.eclipse.graphiti.features.impl.AbstractAddFeature;
import org.eclipse.graphiti.mm.algorithms.Polyline;
import org.eclipse.graphiti.mm.pictograms.Connection;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.graphiti.services.IGaService;
import org.eclipse.graphiti.services.IPeCreateService;
import org.eclipse.graphiti.util.IColorConstant;

public class AddContainmentConnectionFeature extends AbstractAddFeature implements IAddFeature {

	public AddContainmentConnectionFeature(IFeatureProvider fp) {
		super(fp);
	}

	public boolean canAdd(IAddContext context) {
		return context instanceof IAddConnectionContext;
	}

	public PictogramElement add(IAddContext context) {
		IAddConnectionContext addConContext = (IAddConnectionContext) context;
		IPeCreateService peCreateService = Graphiti.getPeCreateService();
		IGaService gaService = Graphiti.getGaService();

		Connection connection = peCreateService.createCurvedConnection(new double[] { 0d, 0d, 0.5d, -50d, 1d, 0d },
				getDiagram());
		connection.setStart(addConContext.getSourceAnchor());
		connection.setEnd(addConContext.getTargetAnchor());

		Polyline polyline = gaService.createPlainPolyline(connection);
		polyline.setForeground(manageColor(IColorConstant.BLACK));

		return connection;
	}

}