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/*****************************************************************************
* Copyright (c) 2010 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:
* Remi Schnekenburger (CEA LIST) remi.schnekenburger@cea.fr - Initial API and implementation
* Vincent Lorenzo (CEA-LIST) vincent.lorenzo@cea.fr
*****************************************************************************/
package org.eclipse.papyrus.properties.runtime.modelhandler.emf;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.eclipse.core.commands.operations.IUndoableOperation;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.ui.celleditor.FeatureEditorDialog;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.papyrus.core.services.ServiceException;
import org.eclipse.papyrus.core.utils.DisplayUtils;
import org.eclipse.papyrus.properties.runtime.Activator;
import org.eclipse.papyrus.properties.runtime.Messages;
import org.eclipse.papyrus.properties.runtime.propertyeditor.descriptor.IPropertyEditorDescriptor;
import org.eclipse.papyrus.service.edit.service.ElementEditServiceUtils;
import org.eclipse.papyrus.service.edit.service.IElementEditService;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;
/**
* Model Handler for References
*/
public class ReferenceEMFModelHandler extends EMFFeatureModelHandler {
/**
* Creates a new ReferenceEMFModelHandler.
*
* @param featureName
* the name of the feature to edit
*/
public ReferenceEMFModelHandler(String featureName) {
super(featureName);
}
/** identifier fot this model handler */
public static final String ID = "Reference"; //$NON-NLS-1$
/**
* {@inheritDoc}
*/
@Override
public void setValueInModel(EObject objectToEdit, Object newValue) {
EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
if(featureToEdit == null) {
return;
}
if(newValue instanceof EObject || newValue == null) {
objectToEdit.eSet(featureToEdit, newValue);
} else if(newValue instanceof List<?>) {
objectToEdit.eSet(featureToEdit, newValue);
} else {
Activator.log.error("impossible to set the new value", null); //$NON-NLS-1$
}
}
/**
* {@inheritDoc}
*/
@Override
public void completeEditorDescriptor(IPropertyEditorDescriptor descriptor, List<? extends EObject> objectToEdit) {
}
/**
* {@inheritDoc}
*/
public String getId() {
return ID;
}
/**
* {@inheritDoc}
*/
@Override
public List<IUndoableOperation> getCreateValueOperations(final List<? extends EObject> objectsToEdit, Composite parent) {
// checks the containment feature
EObject eObject = objectsToEdit.get(0);
EStructuralFeature feature = getFeatureByName(eObject);
if(!(feature instanceof EReference)) {
return new ArrayList<IUndoableOperation>();
}
// check containment feature
boolean isContainment = ((EReference)feature).isContainment();
if(isContainment) {
// retrieve the Eclass of the elements to edit
List<IUndoableOperation> undoableOperations = new ArrayList<IUndoableOperation>();
EClass eClass = eObject.eClass();
if(eClass == null) {
return undoableOperations;
}
// Use edit service and look for element types that are possible types of the selected EReference
List<IElementEditService> featureTypeServices;
try {
featureTypeServices = ElementEditServiceUtils.getEditServiceProvider().getContainedTypeEditServices(eObject, (EReference)feature);
} catch (ServiceException e) {
e.printStackTrace();
return undoableOperations;
}
for(IElementEditService featureTypeService : featureTypeServices) {
CreateElementRequest request = new CreateElementRequest(EMFUtils.getTransactionalEditingDomain(objectsToEdit), eObject, (IElementType)featureTypeService.getAdapter(IElementType.class), (EReference)feature);
request.setLabel(Messages.bind(Messages.EMFTEReferenceController_CreationOperationMenuLabel, featureTypeService.getDisplayName()));
ICommand command = featureTypeService.getEditCommand(request);
if(command.canExecute()) {
// adds it to the list of command that can be
// executed
undoableOperations.add(command);
}
}
return undoableOperations;
} else {
// IUndoableOperation operation = new FindReferenceCommand(EMFUtils.getTransactionalEditingDomain(objectsToEdit), "Find and Add references", objectsToEdit);
IUndoableOperation operation = getFindReferenceCommand(EMFUtils.getTransactionalEditingDomain(objectsToEdit), "Find and Add references", objectsToEdit); //$NON-NLS-1$
return Arrays.asList(operation);
}
}
/**
* Returns the command to find the reference
*
* @param transactionalEditingDomain
* the editing domain
* @param string
* the name of the command
* @param objectsToEdit
* the lists of objects to edit
* @return
* the command to find the reference
*/
public IUndoableOperation getFindReferenceCommand(TransactionalEditingDomain transactionalEditingDomain, String string, List<? extends EObject> objectsToEdit) {
CompositeTransactionalCommand command = new CompositeTransactionalCommand(transactionalEditingDomain, string);
// checks the containment feature
EObject eObject = objectsToEdit.get(0);
EStructuralFeature feature = getFeatureByName(eObject);
if(!(feature instanceof EReference)) {
return command;
}
// pops up a window to ask for a new reference
Display display = Display.getCurrent();
if(display == null && PlatformUI.isWorkbenchRunning()) {
display = PlatformUI.getWorkbench().getDisplay();
}
display = (display != null) ? display : Display.getDefault();
EClassifier eclassifier = feature.getEType();
Object availableValues = getAvailableValues(eObject);
List<?> values = new ArrayList<Object>();
if(availableValues instanceof List<?>) {
values = (List<?>)availableValues;
} else if(availableValues instanceof Object[]) {
values = Arrays.asList(availableValues);
} else {
values = Arrays.asList(availableValues);
}
@SuppressWarnings("unchecked")
FeatureEditorDialog dialog = new FeatureEditorDialog(display.getActiveShell(), DisplayUtils.getLabelProvider(), eObject, eclassifier, (List<EObject>)eObject.eGet(feature), Messages.ReferenceEMFModelHandler_Select_Values, values, false, feature.isOrdered(), feature.isUnique());
// should select the current value by default
if(Dialog.OK == dialog.open()) {
@SuppressWarnings("unchecked")
List<EObject> currentValues = (List<EObject>)dialog.getResult();
SetRequest[] requests = getSetRequest(transactionalEditingDomain, eObject, currentValues);
if(requests != null) {
org.eclipse.papyrus.service.edit.service.IElementEditService provider = org.eclipse.papyrus.service.edit.service.ElementEditServiceUtils.getCommandProvider(eObject);
if(provider != null) {
ICommand editCommand = null;
for(SetRequest current : requests) {
editCommand = provider.getEditCommand(current);
if(editCommand != null && editCommand.canExecute()) {
command.add(editCommand);
}
}
}
}
return command;
}
return command;
}
// /**
// * Command to create references.
// * Two cases:
// * - This is a containment reference, should create element.
// * - This is a simple reference, should only browse the model to get other elements
// */
// protected class FindReferenceCommand extends AbstractTransactionalCommand {
//
// /** list of objects to edit */
// protected final List<? extends EObject> objectsToEdit;
//
// /**
// * Creates a new FindReferenceCommand.
// *
// * @param domain
// * editing domain used to create or manipulate elements
// * @param label
// * the label of the command, used by UI.
// * @param objectsToEdit
// * the list of objects to edit
// */
// public FindReferenceCommand(TransactionalEditingDomain domain, String label, List<? extends EObject> objectsToEdit) {
// super(domain, label, null);
// this.objectsToEdit = objectsToEdit;
// }
//
// /**
// * {@inheritDoc}
// */
// @Override
// protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
//
// // checks the containment feature
// EObject eObject = objectsToEdit.get(0);
// EStructuralFeature feature = getFeatureByName(eObject);
// if(!(feature instanceof EReference)) {
// return CommandResult.newErrorCommandResult("the feature " + getFeatureName() + " is not a reference");
// }
//
// // pops up a window to ask for a new reference
// Display display = Display.getCurrent();
// if(display == null && PlatformUI.isWorkbenchRunning()) {
// display = PlatformUI.getWorkbench().getDisplay();
// }
// display = (display != null) ? display : Display.getDefault();
// EClassifier eclassifier = feature.getEType();
// Object availableValues = getAvailableValues(eObject);
// List<?> values = new ArrayList<Object>();
// if(availableValues instanceof List<?>) {
// values = (List<?>)availableValues;
// } else if(availableValues instanceof Object[]) {
// values = Arrays.asList(availableValues);
// } else {
// values = Arrays.asList(availableValues);
// }
//
// @SuppressWarnings("unchecked")
// FeatureEditorDialog dialog = new FeatureEditorDialog(display.getActiveShell(), DisplayUtils.getLabelProvider(), eObject, eclassifier, (List<EObject>)eObject.eGet(feature), "Select Values", values, false, feature.isOrdered(), feature.isUnique());
// // should select the current value by default
// if(Dialog.OK == dialog.open()) {
// @SuppressWarnings("unchecked")
// List<EObject> currentValues = (List<EObject>)dialog.getResult();
// eObject.eSet(feature, currentValues);
// }
// return CommandResult.newOKCommandResult();
// }
// }
/**
*
* @see org.eclipse.papyrus.properties.runtime.modelhandler.emf.IEMFModelHandler#getSetRequest(org.eclipse.emf.transaction.TransactionalEditingDomain,
* org.eclipse.emf.ecore.EObject, java.lang.Object)
*
* @param domain
* @param objectToEdit
* @param newValue
* @return
*/
public SetRequest[] getSetRequest(TransactionalEditingDomain domain, EObject objectToEdit, Object newValue) {
EStructuralFeature featureToEdit = getFeatureByName(objectToEdit);
if(featureToEdit == null) {
return null;
}
if(newValue instanceof EObject || newValue == null) {
return new SetRequest[]{ new SetRequest(domain, objectToEdit, featureToEdit, newValue) };
} else if(newValue instanceof List<?>) {
return new SetRequest[]{ new SetRequest(domain, objectToEdit, featureToEdit, newValue) };
} else {
Activator.log.error("impossible to set the new value", null); //$NON-NLS-1$
}
return null;
}
}
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