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/*
* Copyright (c) 2011, 2012, 2015 Eike Stepper (Berlin, Germany) 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:
* Martin Fluegge - initial API and implementation
*
*/
package org.eclipse.emf.cdo.dawn.examples.acore.graphiti.features;
import org.eclipse.emf.ecore.EObject;
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.GraphicsAlgorithmContainer;
import org.eclipse.graphiti.mm.algorithms.Polyline;
import org.eclipse.graphiti.mm.algorithms.Text;
import org.eclipse.graphiti.mm.pictograms.Connection;
import org.eclipse.graphiti.mm.pictograms.ConnectionDecorator;
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;
/**
* @author Martin Fluegge
*/
public abstract class AcoreBasicAddConnectionFeature extends AbstractAddFeature
{
public AcoreBasicAddConnectionFeature(IFeatureProvider fp)
{
super(fp);
}
public PictogramElement add(IAddContext context)
{
IAddConnectionContext addConContext = (IAddConnectionContext)context;
// EReference addedEReference = (EReference)context.getNewObject();
EObject addedObject = (EObject)context.getNewObject();
IPeCreateService peCreateService = Graphiti.getPeCreateService();
// CONNECTION WITH POLYLINE
Connection connection = peCreateService.createFreeFormConnection(getDiagram());
connection.setStart(addConContext.getSourceAnchor());
connection.setEnd(addConContext.getTargetAnchor());
IGaService gaService = Graphiti.getGaService();
Polyline polyline = gaService.createPolyline(connection);
polyline.setLineWidth(2);
polyline.setForeground(manageColor(IColorConstant.BLACK));
// we need to put in an object, otherwise the line will be marked dotted
// link(connection, addedObject);
ConnectionDecorator textDecorator = peCreateService.createConnectionDecorator(connection, true, 0.5, true);
Text text = gaService.createDefaultText(getDiagram(), textDecorator);
text.setForeground(manageColor(IColorConstant.BLACK));
gaService.setLocation(text, 10, 0);
text.setValue(getConnectionLabel());
ConnectionDecorator cd;
cd = peCreateService.createConnectionDecorator(connection, false, 1.0, true);
createTargetDecoration(cd);
return connection;
}
protected abstract String getConnectionLabel();
public abstract boolean canAdd(IAddContext context);
protected abstract Polyline createTargetDecoration(GraphicsAlgorithmContainer gaContainer);
}
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