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DiagramEventProcessorFactory.java
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DiagramEventProcessorFactory.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.collaborative.diagrams;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import org.eclipse.sirius.components.collaborative.api.IRepresentationConfiguration;
import org.eclipse.sirius.components.collaborative.api.IRepresentationEventProcessor;
import org.eclipse.sirius.components.collaborative.api.IRepresentationEventProcessorFactory;
import org.eclipse.sirius.components.collaborative.api.IRepresentationRefreshPolicyRegistry;
import org.eclipse.sirius.components.collaborative.api.IRepresentationSearchService;
import org.eclipse.sirius.components.collaborative.api.ISubscriptionManagerFactory;
import org.eclipse.sirius.components.collaborative.api.RepresentationEventProcessorFactoryConfiguration;
import org.eclipse.sirius.components.collaborative.diagrams.api.DiagramConfiguration;
import org.eclipse.sirius.components.collaborative.diagrams.api.IDiagramCreationService;
import org.eclipse.sirius.components.collaborative.diagrams.api.IDiagramEventHandler;
import org.eclipse.sirius.components.collaborative.diagrams.api.IDiagramEventProcessor;
import org.eclipse.sirius.components.core.api.IEditingContext;
import org.eclipse.sirius.components.core.api.IRepresentationDescriptionSearchService;
import org.eclipse.sirius.components.diagrams.Diagram;
import org.springframework.stereotype.Service;
/**
* Used to create the diagram event processors.
*
* @author sbegaudeau
*/
@Service
public class DiagramEventProcessorFactory implements IRepresentationEventProcessorFactory {
private final IRepresentationSearchService representationSearchService;
private final IDiagramCreationService diagramCreationService;
private final List<IDiagramEventHandler> diagramEventHandlers;
private final ISubscriptionManagerFactory subscriptionManagerFactory;
private final IRepresentationDescriptionSearchService representationDescriptionSearchService;
private final IRepresentationRefreshPolicyRegistry representationRefreshPolicyRegistry;
public DiagramEventProcessorFactory(RepresentationEventProcessorFactoryConfiguration configuration, IDiagramCreationService diagramCreationService,
List<IDiagramEventHandler> diagramEventHandlers) {
this.representationSearchService = Objects.requireNonNull(configuration.getRepresentationSearchService());
this.diagramCreationService = Objects.requireNonNull(diagramCreationService);
this.diagramEventHandlers = Objects.requireNonNull(diagramEventHandlers);
this.subscriptionManagerFactory = Objects.requireNonNull(configuration.getSubscriptionManagerFactory());
this.representationDescriptionSearchService = Objects.requireNonNull(configuration.getRepresentationDescriptionSearchService());
this.representationRefreshPolicyRegistry = Objects.requireNonNull(configuration.getRepresentationRefreshPolicyRegistry());
}
@Override
public <T extends IRepresentationEventProcessor> boolean canHandle(Class<T> representationEventProcessorClass, IRepresentationConfiguration configuration) {
return IDiagramEventProcessor.class.isAssignableFrom(representationEventProcessorClass) && configuration instanceof DiagramConfiguration;
}
@Override
public <T extends IRepresentationEventProcessor> Optional<T> createRepresentationEventProcessor(Class<T> representationEventProcessorClass, IRepresentationConfiguration configuration,
IEditingContext editingContext) {
if (IDiagramEventProcessor.class.isAssignableFrom(representationEventProcessorClass) && configuration instanceof DiagramConfiguration diagramConfiguration) {
var optionalDiagram = this.representationSearchService.findById(editingContext, diagramConfiguration.getId(), Diagram.class);
if (optionalDiagram.isPresent()) {
Diagram diagram = optionalDiagram.get();
// @formatter:off
DiagramContext diagramContext = new DiagramContext(diagram);
IRepresentationEventProcessor diagramEventProcessor = new DiagramEventProcessor(editingContext, diagramContext,
this.diagramEventHandlers, this.subscriptionManagerFactory.create(), this.representationDescriptionSearchService, this.representationRefreshPolicyRegistry, this.diagramCreationService);
return Optional.of(diagramEventProcessor)
.filter(representationEventProcessorClass::isInstance)
.map(representationEventProcessorClass::cast);
// @formatter:on
}
}
return Optional.empty();
}
}