GeneralizationItemSemanticEditPolicy.java

package org.eclipse.uml2.diagram.clazz.edit.policies;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest;
import org.eclipse.uml2.diagram.clazz.edit.commands.CommentAnnotatedElementCreateCommand;
import org.eclipse.uml2.diagram.clazz.edit.commands.CommentAnnotatedElementReorientCommand;
import org.eclipse.uml2.diagram.clazz.edit.commands.ConstraintConstrainedElementCreateCommand;
import org.eclipse.uml2.diagram.clazz.edit.commands.ConstraintConstrainedElementReorientCommand;
import org.eclipse.uml2.diagram.clazz.edit.commands.GeneralizationCreateCommand;
import org.eclipse.uml2.diagram.clazz.edit.commands.GeneralizationGeneralCreateCommand;
import org.eclipse.uml2.diagram.clazz.edit.commands.GeneralizationGeneralReorientCommand;
import org.eclipse.uml2.diagram.clazz.edit.commands.GeneralizationReorientCommand;
import org.eclipse.uml2.diagram.clazz.edit.parts.CommentAnnotatedElementEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.ConstraintConstrainedElementEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.GeneralizationEditPart;
import org.eclipse.uml2.diagram.clazz.edit.parts.GeneralizationGeneralEditPart;
import org.eclipse.uml2.diagram.clazz.providers.UMLElementTypes;
import org.eclipse.uml2.uml.Classifier;
import org.eclipse.uml2.uml.Generalization;
import org.eclipse.uml2.uml.UMLPackage;

/**
 * @generated
 */
public class GeneralizationItemSemanticEditPolicy extends UMLBaseItemSemanticEditPolicy {

	/**
	 * @generated
	 */
	public GeneralizationItemSemanticEditPolicy() {
		super(UMLElementTypes.Generalization_4001);
	}

	/**
	 * @generated
	 */
	protected Command getDestroyElementCommand(DestroyElementRequest req) {
		return getGEFWrapper(new DestroyElementCommand(req));
	}

	/**
	 * @NOT-generated
	 */
	@Override
	protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) {
		if (UMLElementTypes.Generalization_4001 == req.getElementType()) {
			return req.getTarget() == null ? null : getCreateCompleteIncomingGeneralization4001Command(req);
		}
		return super.getCreateRelationshipCommand(req);
	}

	/**
	 * @generated
	 */
	protected Command getStartCreateRelationshipCommand(CreateRelationshipRequest req) {
		if (UMLElementTypes.ConstraintConstrainedElement_4004 == req.getElementType()) {
			return null;
		}
		if (UMLElementTypes.GeneralizationGeneral_4012 == req.getElementType()) {
			return getGEFWrapper(new GeneralizationGeneralCreateCommand(req, req.getSource(), req.getTarget()));
		}
		if (UMLElementTypes.CommentAnnotatedElement_4019 == req.getElementType()) {
			return null;
		}
		return null;
	}

	/**
	 * @generated
	 */
	protected Command getCompleteCreateRelationshipCommand(CreateRelationshipRequest req) {
		if (UMLElementTypes.ConstraintConstrainedElement_4004 == req.getElementType()) {
			return getGEFWrapper(new ConstraintConstrainedElementCreateCommand(req, req.getSource(), req.getTarget()));
		}
		if (UMLElementTypes.GeneralizationGeneral_4012 == req.getElementType()) {
			return null;
		}
		if (UMLElementTypes.CommentAnnotatedElement_4019 == req.getElementType()) {
			return getGEFWrapper(new CommentAnnotatedElementCreateCommand(req, req.getSource(), req.getTarget()));
		}
		return null;
	}

	/**
	 * Returns command to reorient EReference based link. New link target or source
	 * should be the domain model element associated with this node.
	 * 
	 * @generated
	 */
	protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
		switch (getVisualID(req)) {
		case ConstraintConstrainedElementEditPart.VISUAL_ID:
			return getGEFWrapper(new ConstraintConstrainedElementReorientCommand(req));
		case GeneralizationGeneralEditPart.VISUAL_ID:
			return getGEFWrapper(new GeneralizationGeneralReorientCommand(req));
		case CommentAnnotatedElementEditPart.VISUAL_ID:
			return getGEFWrapper(new CommentAnnotatedElementReorientCommand(req));
		}
		return super.getReorientReferenceRelationshipCommand(req);
	}

	/** 
	 * @NOT-generated
	 * #215340 Generalization redirecting to GeneralizationSet
	 */
	protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
		switch (getVisualID(req)) {
		case GeneralizationEditPart.VISUAL_ID:
			return getGEFWrapper(new GeneralizationReorientCommand(req));
		}
		return super.getReorientRelationshipCommand(req);
	}

	/**
	 * @generated NOT
	 */
	protected Command getCreateCompleteIncomingGeneralization4001Command(CreateRelationshipRequest req) {
		EObject sourceEObject = req.getSource();
		EObject targetEObject = req.getTarget();
		if (false == sourceEObject instanceof Classifier || false == targetEObject instanceof Generalization) {
			return UnexecutableCommand.INSTANCE;
		}
		// XXX allow creation to Generalization with GeneralizationSet
		if (((Generalization) targetEObject).getGeneralizationSets().size() > 0) {
			return UnexecutableCommand.INSTANCE;
		}
		Classifier source = (Classifier) sourceEObject;
		Classifier target = ((Generalization) targetEObject).getGeneral();

		if (!UMLBaseItemSemanticEditPolicy.getLinkConstraints().canCreateGeneralization_4001(source, target)) {
			return UnexecutableCommand.INSTANCE;
		}
		if (req.getContainmentFeature() == null) {
			req.setContainmentFeature(UMLPackage.eINSTANCE.getClassifier_Generalization());
		}
		return getGEFWrapper(new GeneralizationCreateCommand(req, source, target));
	}

}