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DefaultEditService.java
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DefaultEditService.java
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/*******************************************************************************
* Copyright (c) 2019, 2023 Obeo.
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.components.emf.services;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.UUID;
import org.eclipse.emf.common.command.BasicCommandStack;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.edit.command.AddCommand;
import org.eclipse.emf.edit.command.CommandParameter;
import org.eclipse.emf.edit.command.CreateChildCommand;
import org.eclipse.emf.edit.command.CreateChildCommand.Helper;
import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.sirius.components.core.api.ChildCreationDescription;
import org.eclipse.sirius.components.core.api.IDefaultEditService;
import org.eclipse.sirius.components.core.api.IEditingContext;
import org.eclipse.sirius.components.core.api.IFeedbackMessageService;
import org.eclipse.sirius.components.core.api.IObjectService;
import org.eclipse.sirius.components.emf.services.api.IEMFEditingContext;
import org.eclipse.sirius.components.emf.services.api.IEMFKindService;
import org.eclipse.sirius.components.emf.services.messages.IEMFMessageService;
import org.eclipse.sirius.components.representations.Message;
import org.eclipse.sirius.components.representations.MessageLevel;
import org.eclipse.sirius.emfjson.resource.JsonResourceImpl;
import org.springframework.stereotype.Service;
/**
* Used to provide support for the default edition of EMF models.
*
* @author sbegaudeau
* @author lfasani
*/
@Service
public class DefaultEditService implements IDefaultEditService {
private final IEMFKindService emfKindService;
private final ComposedAdapterFactory composedAdapterFactory;
private final ISuggestedRootObjectTypesProvider suggestedRootObjectTypesProvider;
private final IObjectService objectService;
private final IFeedbackMessageService feedbackMessageService;
private final IEMFMessageService messageService;
public DefaultEditService(IEMFKindService emfKindService, ComposedAdapterFactory composedAdapterFactory, ISuggestedRootObjectTypesProvider suggestedRootObjectsProvider, IObjectService objectService, IFeedbackMessageService feedbackMessageService, IEMFMessageService messageService) {
this.emfKindService = Objects.requireNonNull(emfKindService);
this.composedAdapterFactory = Objects.requireNonNull(composedAdapterFactory);
this.suggestedRootObjectTypesProvider = Objects.requireNonNull(suggestedRootObjectsProvider);
this.objectService = Objects.requireNonNull(objectService);
this.feedbackMessageService = Objects.requireNonNull(feedbackMessageService);
this.messageService = Objects.requireNonNull(messageService);
}
private Optional<EClass> getEClass(EPackage.Registry ePackageRegistry, String kind) {
String ePackageName = this.emfKindService.getEPackageName(kind);
String eClassName = this.emfKindService.getEClassName(kind);
return this.emfKindService.findEPackage(ePackageRegistry, ePackageName)
.map(ePackage -> ePackage.getEClassifier(eClassName))
.filter(EClass.class::isInstance)
.map(EClass.class::cast);
}
private Optional<EPackage.Registry> getPackageRegistry(IEditingContext editingContext) {
return Optional.of(editingContext)
.filter(IEMFEditingContext.class::isInstance)
.map(IEMFEditingContext.class::cast)
.map(IEMFEditingContext::getDomain)
.map(EditingDomain::getResourceSet)
.map(ResourceSet::getPackageRegistry);
}
@Override
public List<ChildCreationDescription> getChildCreationDescriptions(IEditingContext editingContext, String kind, String referenceKind) {
List<ChildCreationDescription> childCreationDescriptions = new ArrayList<>();
this.getPackageRegistry(editingContext).ifPresent(ePackageRegistry -> {
AdapterFactoryEditingDomain editingDomain = new AdapterFactoryEditingDomain(this.composedAdapterFactory, new BasicCommandStack());
ResourceSet resourceSet = editingDomain.getResourceSet();
resourceSet.setPackageRegistry(ePackageRegistry);
Resource resource = new JsonResourceImpl(URI.createURI("inmemory"), Map.of());
resourceSet.getResources().add(resource);
var optionalEClass = this.getEClass(ePackageRegistry, kind)
.filter(eClass -> !eClass.isAbstract() && !eClass.isInterface());
Optional<EClass> optionalEClassReference;
if (referenceKind != null) {
optionalEClassReference = this.getEClass(ePackageRegistry, referenceKind);
} else {
optionalEClassReference = Optional.empty();
}
if (optionalEClass.isPresent()) {
EClass eClass = optionalEClass.get();
EObject eObject = EcoreUtil.create(eClass);
resource.getContents().add(eObject);
Collection<?> newChildDescriptors = editingDomain.getNewChildDescriptors(eObject, null);
List<CommandParameter> commandParameters = newChildDescriptors.stream()
.filter(CommandParameter.class::isInstance)
.map(CommandParameter.class::cast)
.filter(commandParameter -> optionalEClassReference.map(eClassReference -> eClassReference.isInstance(commandParameter.getValue()))
.orElse(true))
.toList();
Adapter adapter = editingDomain.getAdapterFactory().adapt(eObject, IEditingDomainItemProvider.class);
if (adapter instanceof IEditingDomainItemProvider editingDomainItemProvider) {
if (editingDomainItemProvider instanceof Helper helper) {
for (CommandParameter commandParameter : commandParameters) {
String text = helper.getCreateChildText(eObject, commandParameter.getFeature(), commandParameter.getValue(), null);
List<String> iconURL = this.objectService.getImagePath(commandParameter.getValue());
ChildCreationDescription childCreationDescription = new ChildCreationDescription(text, text, iconURL);
childCreationDescriptions.add(childCreationDescription);
}
}
}
}
});
return childCreationDescriptions;
}
@Override
public Optional<Object> createChild(IEditingContext editingContext, Object object, String childCreationDescriptionId) {
var optionalEditingDomain = Optional.of(editingContext)
.filter(IEMFEditingContext.class::isInstance)
.map(IEMFEditingContext.class::cast)
.map(IEMFEditingContext::getDomain);
Optional<EObject> optionalEObject = Optional.of(object)
.filter(EObject.class::isInstance)
.map(EObject.class::cast);
if (optionalEditingDomain.isPresent() && optionalEObject.isPresent()) {
AdapterFactoryEditingDomain editingDomain = optionalEditingDomain.get();
EObject eObject = optionalEObject.get();
Collection<?> newChildDescriptors = editingDomain.getNewChildDescriptors(eObject, null);
List<CommandParameter> commandParameters = newChildDescriptors.stream()
.filter(CommandParameter.class::isInstance)
.map(CommandParameter.class::cast)
.toList();
Adapter adapter = editingDomain.getAdapterFactory().adapt(eObject, IEditingDomainItemProvider.class);
if (adapter instanceof IEditingDomainItemProvider editingDomainItemProvider) {
if (editingDomainItemProvider instanceof Helper helper) {
for (CommandParameter commandParameter : commandParameters) {
String text = helper.getCreateChildText(eObject, commandParameter.getFeature(), commandParameter.getValue(), null);
if (childCreationDescriptionId.equals(text)) {
return this.createObject(editingDomain, eObject, commandParameter);
}
}
}
}
}
return Optional.empty();
}
private Optional<Object> createObject(AdapterFactoryEditingDomain editingDomain, EObject eObject, CommandParameter commandParameter) {
Optional<Object> objectOptional = Optional.empty();
if (commandParameter.getEStructuralFeature() instanceof EReference ref && ref.isContainment() && !ref.isMany() && eObject.eGet(ref) != null) {
this.feedbackMessageService
.addFeedbackMessage(new Message(this.messageService.upperBoundaryReached(commandParameter.getEValue().eClass()
.getName(), commandParameter.getEStructuralFeature().getName()), MessageLevel.WARNING));
return Optional.empty();
}
Command createChildCommand = CreateChildCommand.create(editingDomain, eObject, commandParameter, Collections.singletonList(eObject));
editingDomain.getCommandStack().execute(createChildCommand);
Collection<?> result = createChildCommand.getResult();
if (result.size() == 1) {
Object child = result.iterator().next();
if (child instanceof EObject && EcoreUtil.isAncestor(eObject, (EObject) child)) {
objectOptional = Optional.of(child);
}
}
return objectOptional;
}
@Override
public void delete(Object object) {
Optional<EObject> optionalEObject = Optional.of(object)
.filter(EObject.class::isInstance)
.map(EObject.class::cast);
optionalEObject.ifPresent(eObject -> EcoreUtil.deleteAll(Collections.singleton(eObject), true));
}
@Override
public List<ChildCreationDescription> getRootCreationDescriptions(IEditingContext editingContext, String domainId, boolean suggested, String referenceKind) {
List<ChildCreationDescription> rootObjectCreationDescription = new ArrayList<>();
this.getPackageRegistry(editingContext).ifPresent(ePackageRegistry -> {
EPackage ePackage = ePackageRegistry.getEPackage(domainId);
if (ePackage != null) {
List<EClass> classes;
if (suggested) {
classes = this.suggestedRootObjectTypesProvider.getSuggestedRootObjectTypes(ePackage);
if (classes.isEmpty()) {
classes = this.getConcreteClasses(ePackage);
}
} else {
classes = this.getConcreteClasses(ePackage);
}
for (EClass suggestedClass : classes) {
if (referenceKind == null || this.getEClass(ePackageRegistry, referenceKind).map(eClassReference -> eClassReference.isSuperTypeOf(suggestedClass))
.orElse(true)) {
List<String> iconURL = this.objectService.getImagePath(EcoreUtil.create(suggestedClass));
rootObjectCreationDescription.add(new ChildCreationDescription(suggestedClass.getName(), suggestedClass.getName(), iconURL));
}
}
}
});
return rootObjectCreationDescription;
}
private List<EClass> getConcreteClasses(EPackage ePackage) {
return ePackage.getEClassifiers().stream()
.filter(EClass.class::isInstance)
.map(EClass.class::cast)
.filter(eClass -> !eClass.isAbstract() && !eClass.isInterface())
.toList();
}
@Override
public Optional<Object> createRootObject(IEditingContext editingContext, UUID documentId, String domainId, String rootObjectCreationDescriptionId) {
Optional<Object> createdObjectOptional = Optional.empty();
var optionalEClass = this.getMatchingEClass(editingContext, domainId, rootObjectCreationDescriptionId);
var optionalEditingDomain = Optional.of(editingContext)
.filter(IEMFEditingContext.class::isInstance)
.map(IEMFEditingContext.class::cast)
.map(IEMFEditingContext::getDomain);
if (optionalEClass.isPresent() && optionalEditingDomain.isPresent()) {
EClass eClass = optionalEClass.get();
AdapterFactoryEditingDomain editingDomain = optionalEditingDomain.get();
var optionalResource = editingDomain.getResourceSet().getResources().stream()
.filter(resource -> documentId.toString().equals(resource.getURI().path().substring(1)))
.findFirst();
if (optionalResource.isPresent()) {
EObject eObject = EcoreUtil.create(eClass);
var resource = optionalResource.get();
AddCommand command = new AddCommand(editingDomain, resource.getContents(), eObject);
editingDomain.getCommandStack().execute(command);
createdObjectOptional = Optional.of(eObject);
}
}
return createdObjectOptional;
}
private Optional<EClass> getMatchingEClass(IEditingContext editingContext, String domainId, String rootObjectCreationDescriptionId) {
return Optional.of(editingContext)
.filter(IEMFEditingContext.class::isInstance)
.map(IEMFEditingContext.class::cast)
.map(IEMFEditingContext::getDomain)
.map(EditingDomain::getResourceSet)
.map(ResourceSet::getPackageRegistry)
.map(packageRegistry -> packageRegistry.getEPackage(domainId))
.map(ePackage -> ePackage.getEClassifier(rootObjectCreationDescriptionId))
.filter(EClass.class::isInstance)
.map(EClass.class::cast)
.filter(eClass -> !eClass.isAbstract() && !eClass.isInterface());
}
@Override
public void editLabel(Object object, String labelField, String newValue) {
if (object instanceof EObject) {
EClass eClass = ((EObject) object).eClass();
EStructuralFeature eStructuralFeature = eClass.getEStructuralFeature(labelField);
if (eStructuralFeature instanceof EAttribute
&& !eStructuralFeature.isMany()
&& eStructuralFeature.isChangeable()
&& eStructuralFeature.getEType().getInstanceClass() == String.class) {
((EObject) object).eSet(eStructuralFeature, newValue);
}
}
}
}