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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
*****************************************************************************/
package org.eclipse.papyrus.properties.runtime.controller;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.transaction.util.TransactionUtil;
import org.eclipse.papyrus.core.utils.EditorUtils;
import org.eclipse.papyrus.properties.runtime.Activator;
import org.eclipse.papyrus.properties.runtime.controller.descriptor.EMFTPropertyEditorControllerDescriptor;
import org.eclipse.papyrus.properties.runtime.controller.descriptor.IPropertyEditorControllerDescriptor;
import org.eclipse.papyrus.properties.runtime.controller.predefined.PredefinedControllerDescriptor;
import org.eclipse.papyrus.properties.runtime.modelhandler.emf.IEMFModelHandler;
import org.eclipse.papyrus.properties.runtime.propertyeditor.descriptor.IPropertyEditorDescriptor;
import org.eclipse.swt.widgets.Composite;
/**
* Controller for {@link EStructuralFeature} property editor controller.
*/
public class EMFTStructuralFeatureController extends EMFTPropertyEditorController {
/** descriptor that configures this controller */
private EMFTPropertyEditorControllerDescriptor descriptor;
/** identifier of the controller */
public final static String ID = "emftStructuralFeatureController";
/** model handler to interact with the model for this controller */
protected IEMFModelHandler modelHandler;
/**
* Creates a new EMFTStructuralFeatureController.
*/
public EMFTStructuralFeatureController() {
super();
}
/**
* Initialize the controller.
*
* @param parent
* the composite parent of the controls created by the editor
* @param objectsToEdit
* the list of objects to edit
* @param descriptor
* the descriptor that realize specific configuration for this controller
*/
public IStatus initController(Composite parent, List<Object> objectsToEdit, IPropertyEditorControllerDescriptor descriptor) {
setParent(parent);
IPropertyEditorControllerDescriptor realDescriptor = descriptor;
if(descriptor instanceof PredefinedControllerDescriptor) {
IPropertyEditorControllerDescriptor predefinedDescriptor = ((PredefinedControllerDescriptor)descriptor).getDescriptor();
if(predefinedDescriptor instanceof EMFTPropertyEditorControllerDescriptor) {
realDescriptor = predefinedDescriptor;
}
}
if(realDescriptor instanceof EMFTPropertyEditorControllerDescriptor) {
this.descriptor = (EMFTPropertyEditorControllerDescriptor)realDescriptor;
} else {
return new Status(IStatus.ERROR, Activator.ID, "impossible to adapt descriptor to an EMFTPropertyEditorControllerDescriptor");
}
this.modelHandler = this.descriptor.getHandler();
setObjectsToEdit(objectsToEdit);
TransactionalEditingDomain editingDomain = null;
Iterator<Object> it2 = objectsToEdit.iterator();
while(it2.hasNext() && editingDomain == null) {
editingDomain = TransactionUtil.getEditingDomain(it2.next());
}
// if impossible to find editing domain this way: Tries the Papyrus service
if(editingDomain == null) {
editingDomain = EditorUtils.getTransactionalEditingDomain();
}
if(editingDomain == null && !objectsToEdit.isEmpty()) {
return new Status(IStatus.ERROR, Activator.ID, "impossible to find an editing domain for the controller.");
}
setEditingDomain(editingDomain);
return Status.OK_STATUS;
}
/**
* {@inheritDoc}
*/
@Override
public boolean acceptMultiSelection() {
return descriptor.acceptMultiSelection();
}
/**
* Returns the model handler that manages interaction with the model
*
* @return the model handler that manages interaction with the model
*/
public IEMFModelHandler getModelHandler() {
return modelHandler;
}
/**
* Returns the descriptor configuring this controller
*
* @return the descriptor configuring this controller
*/
public EMFTPropertyEditorControllerDescriptor getDescriptor() {
return descriptor;
}
/**
* {@inheritDoc}
*/
@Override
protected void addListenersToModel() {
modelHandler.addListenersToModel(getObjectsToEdit(), this);
}
/**
* {@inheritDoc}
*/
@Override
protected String getDefaultLabel() {
return descriptor.getFeatureNameToEdit();
}
/**
* {@inheritDoc}
*/
@Override
protected Object getValueToEdit() {
// when editing multiple objects, the value returned is the value of the first element
// it has already been asserted in the contructor that the list is not empty. get(0) should never throw an exception
if(!getObjectsToEdit().isEmpty()) {
EObject object = getObjectsToEdit().get(0);
return getModelHandler().getValueToEdit(object);
}
return new Object();
}
/**
* {@inheritDoc}
*/
@Override
protected void setValueInModel(Object value) {
// when editing multiple objects, the value set will be the same for all elements
// should look for exceptions here perhaps?
for(EObject object : getObjectsToEdit()) {
getModelHandler().setValueInModel(object, value);
}
}
/**
* {@inheritDoc}
*/
@Override
protected IStatus initPropertyEditor(IPropertyEditorDescriptor descriptor) {
// property editor has already been created, but it is not initialized
getPropertyEditor().setIsReadOnly(!getModelHandler().isChangeable(getObjectsToEdit()));
getModelHandler().completeEditorDescriptor(descriptor, getObjectsToEdit());
return getPropertyEditor().init(descriptor);
}
/**
* {@inheritDoc}
*/
@Override
protected void removeListenersFromModel() {
getModelHandler().removeListenersFromModel(getObjectsToEdit(), this);
}
/**
* {@inheritDoc}
*/
public Notifier getTarget() {
// nothing to do here, as there is only one target
return null;
}
/**
* {@inheritDoc}
*/
public boolean isAdapterForType(Object type) {
for(EObject eObject : getObjectsToEdit()) {
if(eObject.getClass().equals(type)) {
return true;
}
}
return false;
}
/**
* {@inheritDoc}
*/
public void notifyChanged(Notification notification) {
getModelHandler().handleNotifyChange(notification, getObjectsToEdit(), this);
}
/**
* {@inheritDoc}
*/
public void setTarget(Notifier newTarget) {
// nothing to do here, as the adapter already knows the target
}
}
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