/*
* Copyright (c) 2006 Borland Software Corporation
*
* All rights reserved. This program and the accompanying materials
* are 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:
* Dmitry Stadnik (Borland) - initial API and implementation
*/
package org.eclipse.gmf.map.editor.edit.policies;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand;
import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil;
import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.SemanticEditPolicy;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.ElementTypeRegistry;
import org.eclipse.gmf.runtime.emf.type.core.IEditHelperContext;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest;
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.DestroyReferenceRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DuplicateElementsRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.GetEditContextRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.MoveRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.gmf.map.editor.edit.helpers.GMFMapBaseEditHelper;
/**
* @generated
*/
public class GMFMapBaseItemSemanticEditPolicy extends SemanticEditPolicy {
/**
* @generated
*/
protected Command getSemanticCommand(IEditCommandRequest request) {
IEditCommandRequest completedRequest = completeRequest(request);
Object editHelperContext = completedRequest.getEditHelperContext();
if (editHelperContext instanceof View || (editHelperContext instanceof IEditHelperContext && ((IEditHelperContext) editHelperContext).getEObject() instanceof View)) {
// no semantic commands are provided for pure design elements
return null;
}
if (editHelperContext == null) {
editHelperContext = ViewUtil.resolveSemanticElement((View) getHost().getModel());
}
IElementType elementType = ElementTypeRegistry.getInstance().getElementType(editHelperContext);
if (elementType == ElementTypeRegistry.getInstance().getType("org.eclipse.gmf.runtime.emf.type.core.default")) { //$NON-NLS-1$
elementType = null;
}
Command epCommand = getSemanticCommandSwitch(completedRequest);
if (epCommand != null) {
ICommand command = epCommand instanceof ICommandProxy ? ((ICommandProxy) epCommand).getICommand() : new CommandProxy(epCommand);
completedRequest.setParameter(GMFMapBaseEditHelper.EDIT_POLICY_COMMAND, command);
}
Command ehCommand = null;
if (elementType != null) {
ICommand command = elementType.getEditCommand(completedRequest);
if (command != null) {
if (!(command instanceof CompositeTransactionalCommand)) {
TransactionalEditingDomain editingDomain = ((IGraphicalEditPart) getHost()).getEditingDomain();
command = new CompositeTransactionalCommand(editingDomain, null).compose(command);
}
ehCommand = new ICommandProxy(command);
}
}
boolean shouldProceed = true;
if (completedRequest instanceof DestroyRequest) {
shouldProceed = shouldProceed((DestroyRequest) completedRequest);
}
if (shouldProceed) {
if (completedRequest instanceof DestroyRequest) {
TransactionalEditingDomain editingDomain = ((IGraphicalEditPart) getHost()).getEditingDomain();
Command deleteViewCommand = new ICommandProxy(new DeleteCommand(editingDomain, (View) getHost().getModel()));
ehCommand = ehCommand == null ? deleteViewCommand : ehCommand.chain(deleteViewCommand);
}
return ehCommand;
}
return null;
}
/**
* @generated
*/
protected Command getSemanticCommandSwitch(IEditCommandRequest req) {
if (req instanceof CreateRelationshipRequest) {
return getCreateRelationshipCommand((CreateRelationshipRequest) req);
} else if (req instanceof CreateElementRequest) {
return getCreateCommand((CreateElementRequest) req);
} else if (req instanceof ConfigureRequest) {
return getConfigureCommand((ConfigureRequest) req);
} else if (req instanceof DestroyElementRequest) {
return getDestroyElementCommand((DestroyElementRequest) req);
} else if (req instanceof DestroyReferenceRequest) {
return getDestroyReferenceCommand((DestroyReferenceRequest) req);
} else if (req instanceof DuplicateElementsRequest) {
return getDuplicateCommand((DuplicateElementsRequest) req);
} else if (req instanceof GetEditContextRequest) {
return getEditContextCommand((GetEditContextRequest) req);
} else if (req instanceof MoveRequest) {
return getMoveCommand((MoveRequest) req);
} else if (req instanceof ReorientReferenceRelationshipRequest) {
return getReorientReferenceRelationshipCommand((ReorientReferenceRelationshipRequest) req);
} else if (req instanceof ReorientRelationshipRequest) {
return getReorientRelationshipCommand((ReorientRelationshipRequest) req);
} else if (req instanceof SetRequest) {
return getSetCommand((SetRequest) req);
}
return null;
}
/**
* @generated
*/
protected Command getConfigureCommand(ConfigureRequest req) {
return null;
}
/**
* @generated
*/
protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) {
return null;
}
/**
* @generated
*/
protected Command getCreateCommand(CreateElementRequest req) {
return null;
}
/**
* @generated
*/
protected Command getSetCommand(SetRequest req) {
return null;
}
/**
* @generated
*/
protected Command getEditContextCommand(GetEditContextRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDestroyElementCommand(DestroyElementRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDestroyReferenceCommand(DestroyReferenceRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDuplicateCommand(DuplicateElementsRequest req) {
return null;
}
/**
* @generated
*/
protected Command getMoveCommand(MoveRequest req) {
return null;
}
/**
* @generated
*/
protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
/**
* @generated
*/
protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
/**
* @generated
*/
protected Command getMSLWrapper(ICommand cmd) {
return new ICommandProxy(cmd);
}
/**
* @generated
*/
protected EObject getSemanticElement() {
return ViewUtil.resolveSemanticElement((View) getHost().getModel());
}
/**
* Finds container element for the new relationship of the specified type.
* Default implementation goes up by containment hierarchy starting from
* the specified element and returns the first element that is instance of
* the specified container class.
*
* @generated
*/
protected EObject getRelationshipContainer(EObject element, EClass containerClass, IElementType relationshipType) {
for (; element != null; element = element.eContainer()) {
if (containerClass.isSuperTypeOf(element.eClass())) {
return element;
}
}
return null;
}
}