package org.eclipse.uml2.diagram.timing.edit.commands;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.type.core.commands.CreateElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.uml2.diagram.timing.edit.policies.TimingDBaseItemSemanticEditPolicy;
import org.eclipse.uml2.diagram.timing.model.timingd.DFrame;
import org.eclipse.uml2.diagram.timing.model.timingd.DInterval;
import org.eclipse.uml2.diagram.timing.model.timingd.DTick;
import org.eclipse.uml2.diagram.timing.model.timingd.TimingDFactory;
import org.eclipse.uml2.diagram.timing.model.timingd.TimingDPackage;
/**
* @generated
*/
public class DIntervalCreateCommand extends CreateElementCommand {
/**
* @generated
*/
private final EObject source;
/**
* @generated
*/
private final EObject target;
/**
* @generated
*/
private final DFrame container;
/**
* @generated
*/
public DIntervalCreateCommand(CreateRelationshipRequest request, EObject source, EObject target) {
super(request);
this.source = source;
this.target = target;
if (request.getContainmentFeature() == null) {
setContainmentFeature(TimingDPackage.eINSTANCE.getDFrame_Intervals());
}
container = deduceContainer(source, target);
if (container != null) {
super.setElementToEdit(container);
}
}
/**
* @generated
*/
public boolean canExecute() {
if (source == null && target == null) {
return false;
}
if (source != null && false == source instanceof DTick) {
return false;
}
if (target != null && false == target instanceof DTick) {
return false;
}
if (getSource() == null) {
return true; // link creation is in progress; source is not defined yet
}
// target may be null here but it's possible to check constraint
if (getContainer() == null) {
return false;
}
return TimingDBaseItemSemanticEditPolicy.LinkConstraints.canCreateDInterval_4003(getContainer(), getSource(), getTarget());
}
/**
* @generated
*/
protected EObject doDefaultElementCreation() {
DInterval newElement = TimingDFactory.eINSTANCE.createDInterval();
getContainer().getIntervals().add(newElement);
newElement.setFromTick(getSource());
newElement.setToTick(getTarget());
return newElement;
}
/**
* @generated
*/
protected EClass getEClassToEdit() {
return TimingDPackage.eINSTANCE.getDFrame();
}
/**
* @generated
*/
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
if (!canExecute()) {
throw new ExecutionException("Invalid arguments in create link command"); //$NON-NLS-1$
}
return super.doExecuteWithResult(monitor, info);
}
/**
* @generated
*/
protected ConfigureRequest createConfigureRequest() {
ConfigureRequest request = super.createConfigureRequest();
request.setParameter(CreateRelationshipRequest.SOURCE, getSource());
request.setParameter(CreateRelationshipRequest.TARGET, getTarget());
return request;
}
/**
* @generated
*/
protected void setElementToEdit(EObject element) {
throw new UnsupportedOperationException();
}
/**
* @generated
*/
protected DTick getSource() {
return (DTick) source;
}
/**
* @generated
*/
protected DTick getTarget() {
return (DTick) target;
}
/**
* @generated
*/
public DFrame getContainer() {
return container;
}
/**
* Default approach is to traverse ancestors of the source to find instance of container.
* Modify with appropriate logic.
* @generated
*/
private static DFrame deduceContainer(EObject source, EObject target) {
// Find container element for the new link.
// Climb up by containment hierarchy starting from the source
// and return the first element that is instance of the container class.
for (EObject element = source; element != null; element = element.eContainer()) {
if (element instanceof DFrame) {
return (DFrame) element;
}
}
return null;
}
}