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/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
* 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:
*
* CEA LIST - Initial API and implementation
* Vincent Lorenzo - bug 492522
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.common.editpolicies;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gef.requests.ReconnectRequest;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
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.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.Connector;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.infra.gmfdiag.common.editpart.ConnectionEditPart;
import org.eclipse.papyrus.infra.services.edit.service.ElementEditServiceUtils;
import org.eclipse.papyrus.infra.services.edit.service.IElementEditService;
import org.eclipse.papyrus.infra.services.edit.utils.RequestParameterConstants;
/**
* Non diagram-specific class replacing UMLBaseItemSemanticEditPolicy generated
* by GMF Tooling.
*/
public class DefaultSemanticEditPolicy extends SemanticEditPolicy {
public static final String GRAPHICAL_RECONNECTED_EDGE = "graphical_edge"; //$NON-NLS-1$
/**
* Extended request data key to hold editpart visual id.
* Add visual id of edited editpart to extended data of the request
* so command switch can decide what kind of diagram element is being edited.
* It is done in those cases when it's not possible to deduce diagram
* element kind from domain element.
*
*/
@Override
@SuppressWarnings("unchecked")
public Command getCommand(Request request) {
if (request instanceof ReconnectRequest) {
Object view = ((ReconnectRequest) request).getConnectionEditPart().getModel();
if (view instanceof View) {
request.getExtendedData().put(GRAPHICAL_RECONNECTED_EDGE, view);
}
}
return super.getCommand(request);
}
@Override
protected Command getSemanticCommand(IEditCommandRequest request) {
IEditCommandRequest completedRequest = completeRequest(request);
Command semanticCommand = getSemanticCommandSwitch(completedRequest);
if (completedRequest instanceof DestroyRequest) {
DestroyRequest destroyRequest = (DestroyRequest) completedRequest;
return shouldProceed(destroyRequest) ? semanticCommand : null;
}
return semanticCommand;
}
/**
* @see org.eclipse.gmf.runtime.diagram.ui.editpolicies.SemanticEditPolicy#completeRequest(org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest)
*
* @param request
* @return
*/
@Override
protected IEditCommandRequest completeRequest(IEditCommandRequest request) {
IEditCommandRequest result = super.completeRequest(request);
if (result instanceof DestroyReferenceRequest) {
if (null == ((IGraphicalEditPart) getHost()).resolveSemanticElement()) {
if (getHost() instanceof ConnectionEditPart) {
ConnectionEditPart ep = (ConnectionEditPart) getHost();
if (ep.isSemanticConnection()) {
Object model = ep.getModel();
if (model instanceof Connector) {
String type = ((Connector) model).getType();
if (type != null) {
result.setParameter(RequestParameterConstants.VIEW_VISUAL_ID, type);
}
}
}
}
}
}
return result;
}
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;
}
protected Command getConfigureCommand(ConfigureRequest req) {
return null;
}
protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) {
return getDefaultSemanticCommand(req, req.getElementType());
}
protected Command getCreateCommand(CreateElementRequest req) {
if (req.getElementType().getEClass() == null) {
return getDefaultSemanticCommand(req, req.getElementType());
} else {
return getDefaultSemanticCommand(req);
}
}
protected Command getSetCommand(SetRequest req) {
return null;
}
protected Command getEditContextCommand(GetEditContextRequest req) {
return null;
}
protected Command getDestroyElementCommand(DestroyElementRequest req) {
return getDefaultSemanticCommand(req);
}
protected Command getDestroyReferenceCommand(DestroyReferenceRequest req) {
return getDestroyReferenceCommand(req, req.getContainer());
}
protected Command getDestroyReferenceCommand(DestroyReferenceRequest req, Object context) {
return getDefaultSemanticCommand(req, context);
}
protected Command getDuplicateCommand(DuplicateElementsRequest req) {
return null;
}
protected Command getMoveCommand(MoveRequest req) {
return UnexecutableCommand.INSTANCE;
}
protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
EObject context = req.getReferenceOwner();
return getDefaultSemanticCommand(req, context);
}
protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
IElementEditService commandService = ElementEditServiceUtils.getCommandProvider(req.getRelationship());
if (commandService == null) {
return UnexecutableCommand.INSTANCE;
}
// Add new graphical end in request parameters
View newView = (View) getHost().getModel();
req.setParameter(RequestParameterConstants.EDGE_REORIENT_REQUEST_END_VIEW, newView);
ICommand semanticCommand = commandService.getEditCommand(req);
if ((semanticCommand != null) && (semanticCommand.canExecute())) {
return getGEFWrapper(semanticCommand);
}
return UnexecutableCommand.INSTANCE;
}
protected final Command getGEFWrapper(ICommand cmd) {
return new ICommandProxy(cmd);
}
/**
* Returns editing domain from the host edit part.
*
*/
protected TransactionalEditingDomain getEditingDomain() {
return ((IGraphicalEditPart) getHost()).getEditingDomain();
}
private Command getDefaultSemanticCommand(IEditCommandRequest req) {
return getDefaultSemanticCommand(req, null);
}
private Command getDefaultSemanticCommand(IEditCommandRequest req, Object context) {
IElementEditService commandService;
if (context != null) {
commandService = ElementEditServiceUtils.getCommandProvider(context);
} else {
commandService = ElementEditServiceUtils.getCommandProvider(((IGraphicalEditPart) getHost()).resolveSemanticElement());
}
if (commandService == null) {
return UnexecutableCommand.INSTANCE;
}
ICommand semanticCommand = commandService.getEditCommand(req);
if ((semanticCommand != null) && (semanticCommand.canExecute())) {
return getGEFWrapper(semanticCommand);
}
return UnexecutableCommand.INSTANCE;
}
}
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