/**
* Copyright 2004-2016 Riccardo Solmi. All rights reserved.
* This file is part of the Whole Platform.
*
* The Whole Platform is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The Whole Platform is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whole.lang.ui.commands;
import org.whole.lang.model.IEntity;
import org.whole.lang.reflect.FeatureDescriptor;
import org.whole.lang.util.EntityUtils;
/**
* @author Riccardo Solmi, Enrico Persiani
*/
public class ConnectionCreateCommand extends AbstractConnectionCommand {
private IEntity source;
private FeatureDescriptor sourceFeature;
private IEntity target;
private FeatureDescriptor targetFeature;
public boolean canExecute() {
if (!canConnect(source, sourceFeature))
return false;
if (target != null && targetFeature != null && !canConnect(target, targetFeature))
return false;
if (source.equals(target))
return false;
return !connectionExists(source, sourceFeature, target, targetFeature);
}
public void execute() {
IEntity connection = getConnection();
IEntity transitionParent = EntityUtils.getCompoundRoot(source).wGet(1);//FIXME get transitions from presentation aspect
connect(source, sourceFeature, connection);
//FIXME should use presentation aspects
connection.wSet(getConnectionFeature("source"), source);
connection.wSet(getConnectionFeature("target"), target);
connect(target, targetFeature, connection);
transitionParent.wAdd(connection);
}
public void undo() {
IEntity connection = getConnection();
IEntity transitionParent = EntityUtils.getCompoundRoot(source).wGet(1);
disconnect(source, sourceFeature, getConnection());
disconnect(target, targetFeature, getConnection());
transitionParent.wRemove(connection);
}
public void setSource(IEntity source) {
this.source = source;
}
public void setSourceFeature(FeatureDescriptor sourceFeature) {
this.sourceFeature = sourceFeature;
}
public void setTarget(IEntity target) {
this.target = target;
}
public void setTargetFeature(FeatureDescriptor targetFeature) {
this.targetFeature = targetFeature;
}
}