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/*******************************************************************************
* Copyright (c) 2011, 2012 Red Hat, Inc.
* All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
*
* @author Ivar Meikas
******************************************************************************/
package org.eclipse.bpmn2.modeler.core.features;
import org.eclipse.bpmn2.BaseElement;
import org.eclipse.bpmn2.DataAssociation;
import org.eclipse.bpmn2.di.BPMNEdge;
import org.eclipse.bpmn2.modeler.core.di.DIUtils;
import org.eclipse.bpmn2.modeler.core.utils.AnchorUtil;
import org.eclipse.bpmn2.modeler.core.utils.BusinessObjectUtil;
import org.eclipse.bpmn2.modeler.core.utils.FeatureSupport;
import org.eclipse.dd.di.DiagramElement;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.graphiti.datatypes.ILocation;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IReconnectionContext;
import org.eclipse.graphiti.features.context.impl.ReconnectionContext;
import org.eclipse.graphiti.features.impl.DefaultReconnectionFeature;
import org.eclipse.graphiti.mm.pictograms.AnchorContainer;
import org.eclipse.graphiti.mm.pictograms.Connection;
import org.eclipse.graphiti.mm.pictograms.FixPointAnchor;
// TODO: Auto-generated Javadoc
/**
* The Class ReconnectBaseElementFeature.
*/
public class ReconnectBaseElementFeature extends DefaultReconnectionFeature {
/** The changes done. */
protected boolean changesDone = false;
/**
* Instantiates a new reconnect base element feature.
*
* @param fp the fp
*/
public ReconnectBaseElementFeature(IFeatureProvider fp) {
super(fp);
}
/* (non-Javadoc)
* @see org.eclipse.graphiti.features.impl.DefaultReconnectionFeature#canReconnect(org.eclipse.graphiti.features.context.IReconnectionContext)
*/
@Override
public boolean canReconnect(IReconnectionContext context) {
AnchorContainer sourceContainer = null;
AnchorContainer targetContainer = null;
EObject businessObject = BusinessObjectUtil.getBusinessObjectForPictogramElement(context.getConnection());
if (context.getReconnectType().equals(ReconnectionContext.RECONNECT_TARGET)) {
sourceContainer = context.getConnection().getStart().getParent();
if (context.getTargetPictogramElement() instanceof AnchorContainer)
targetContainer = (AnchorContainer) context.getTargetPictogramElement();
}
else {
targetContainer = context.getConnection().getEnd().getParent();
if (context.getTargetPictogramElement() instanceof AnchorContainer)
sourceContainer = (AnchorContainer) context.getTargetPictogramElement();
}
if (!AbstractBpmn2CreateConnectionFeature.canCreateConnection(sourceContainer, targetContainer, businessObject.eClass(), context.getReconnectType()))
return false;
return super.canReconnect(context);
}
/* (non-Javadoc)
* @see org.eclipse.graphiti.features.impl.DefaultReconnectionFeature#preReconnect(org.eclipse.graphiti.features.context.IReconnectionContext)
*/
@Override
public void preReconnect(IReconnectionContext context) {
Connection connection = context.getConnection();
FixPointAnchor newAnchor = null;
AnchorContainer source = connection.getStart().getParent();
AnchorContainer target = connection.getEnd().getParent();
if (context.getReconnectType().equals(ReconnectionContext.RECONNECT_TARGET)) {
target = (AnchorContainer) context.getTargetPictogramElement();
ILocation targetLoc = context.getTargetLocation();
newAnchor = AnchorUtil.createAnchor(target, targetLoc.getX(), targetLoc.getY());
}
else {
source = (AnchorContainer) context.getTargetPictogramElement();
ILocation targetLoc = context.getTargetLocation();
newAnchor = AnchorUtil.createAnchor(source, targetLoc.getX(), targetLoc.getY());
}
if (newAnchor!=null)
((ReconnectionContext)context).setNewAnchor(newAnchor);
super.preReconnect(context);
}
/* (non-Javadoc)
* @see org.eclipse.graphiti.features.impl.DefaultReconnectionFeature#postReconnect(org.eclipse.graphiti.features.context.IReconnectionContext)
*/
@Override
public void postReconnect(IReconnectionContext context) {
super.postReconnect(context);
BPMNEdge edge = BusinessObjectUtil.getFirstElementOfType(context.getConnection(), BPMNEdge.class);
DiagramElement de = BusinessObjectUtil.getFirstElementOfType(context.getTargetPictogramElement(), DiagramElement.class);
if (context.getReconnectType().equals(ReconnectionContext.RECONNECT_TARGET)) {
edge.setTargetElement(de);
}
else {
edge.setSourceElement(de);
}
Connection connection = context.getConnection();
BaseElement flow = BusinessObjectUtil.getFirstElementOfType(connection, BaseElement.class);
if (!(flow instanceof DataAssociation)) {
BaseElement be = BusinessObjectUtil.getFirstElementOfType(context.getTargetPictogramElement(), BaseElement.class);
if (context.getReconnectType().equals(ReconnectionContext.RECONNECT_TARGET)) {
EStructuralFeature feature = flow.eClass().getEStructuralFeature("targetRef"); //$NON-NLS-1$
if (feature!=null)
flow.eSet(feature, be);
}
else {
EStructuralFeature feature = flow.eClass().getEStructuralFeature("sourceRef"); //$NON-NLS-1$
if (feature!=null && !feature.isMany())
flow.eSet(feature, be);
}
}
FeatureSupport.updateConnection(getFeatureProvider(), connection, true);
DIUtils.updateDIEdge(context.getConnection());
changesDone = true;
}
/* (non-Javadoc)
* @see org.eclipse.graphiti.features.impl.AbstractFeature#hasDoneChanges()
*/
@Override
public boolean hasDoneChanges() {
return changesDone;
}
}
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