plugins/org.eclipse.uml2.diagram.component/src/org/eclipse/uml2/diagram/component/edit/policies/ClassItemSemanticEditPolicy.java

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

import java.util.Iterator;

import org.eclipse.emf.ecore.EAnnotation;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.CompoundCommand;
import org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
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.ReorientRelationshipRequest;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.uml2.diagram.component.edit.commands.DependencyCreateCommand;
import org.eclipse.uml2.diagram.component.edit.commands.DependencyReorientCommand;
import org.eclipse.uml2.diagram.component.edit.commands.InterfaceRealizationCreateCommand;
import org.eclipse.uml2.diagram.component.edit.commands.InterfaceRealizationReorientCommand;
import org.eclipse.uml2.diagram.component.edit.commands.PortCreateCommand;
import org.eclipse.uml2.diagram.component.edit.parts.DependencyEditPart;
import org.eclipse.uml2.diagram.component.edit.parts.InterfaceRealizationEditPart;
import org.eclipse.uml2.diagram.component.edit.parts.PortEditPart;
import org.eclipse.uml2.diagram.component.part.UMLVisualIDRegistry;
import org.eclipse.uml2.diagram.component.providers.UMLElementTypes;
import org.eclipse.uml2.uml.UMLPackage;

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

	/**
	 * @generated
	 */
	protected Command getCreateCommand(CreateElementRequest req) {
		if (UMLElementTypes.Port_3002 == req.getElementType()) {
			if (req.getContainmentFeature() == null) {
				req.setContainmentFeature(UMLPackage.eINSTANCE.getStructuredClassifier_OwnedAttribute());
			}
			return getGEFWrapper(new PortCreateCommand(req));
		}
		return super.getCreateCommand(req);
	}

	/**
	 * @generated
	 */
	protected Command getDestroyElementCommand(DestroyElementRequest req) {
		CompoundCommand cc = getDestroyEdgesCommand();
		addDestroyChildNodesCommand(cc);
		addDestroyShortcutsCommand(cc);
		cc.add(getGEFWrapper(new DestroyElementCommand(req)));
		return cc.unwrap();
	}

	/**
	 * @generated
	 */
	protected void addDestroyChildNodesCommand(CompoundCommand cmd) {
		View view = (View) getHost().getModel();
		EAnnotation annotation = view.getEAnnotation("Shortcut"); //$NON-NLS-1$
		if (annotation != null) {
			return;
		}
		for (Iterator it = view.getChildren().iterator(); it.hasNext();) {
			Node node = (Node) it.next();
			switch (UMLVisualIDRegistry.getVisualID(node)) {
			case PortEditPart.VISUAL_ID:
				cmd.add(getDestroyElementCommand(node));
				break;
			}
		}
	}

	/**
	 * @generated
	 */
	protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) {
		Command command = req.getTarget() == null ? getStartCreateRelationshipCommand(req) : getCompleteCreateRelationshipCommand(req);
		return command != null ? command : super.getCreateRelationshipCommand(req);
	}

	/**
	 * @generated
	 */
	protected Command getStartCreateRelationshipCommand(CreateRelationshipRequest req) {
		if (UMLElementTypes.InterfaceRealization_4001 == req.getElementType()) {
			return getGEFWrapper(new InterfaceRealizationCreateCommand(req, req.getSource(), req.getTarget()));
		}
		if (UMLElementTypes.Dependency_4009 == req.getElementType()) {
			return getGEFWrapper(new DependencyCreateCommand(req, req.getSource(), req.getTarget()));
		}
		return null;
	}

	/**
	 * @generated
	 */
	protected Command getCompleteCreateRelationshipCommand(CreateRelationshipRequest req) {
		if (UMLElementTypes.InterfaceRealization_4001 == req.getElementType()) {
			return null;
		}
		if (UMLElementTypes.Dependency_4009 == req.getElementType()) {
			return getGEFWrapper(new DependencyCreateCommand(req, req.getSource(), req.getTarget()));
		}
		return null;
	}

	/**
	 * Returns command to reorient EClass based link. New link target or source
	 * should be the domain model element associated with this node.
	 * 
	 * @generated
	 */
	protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
		switch (getVisualID(req)) {
		case InterfaceRealizationEditPart.VISUAL_ID:
			return getGEFWrapper(new InterfaceRealizationReorientCommand(req));
		case DependencyEditPart.VISUAL_ID:
			return getGEFWrapper(new DependencyReorientCommand(req));
		}
		return super.getReorientRelationshipCommand(req);
	}

}