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/*****************************************************************************
* Copyright (c) 2014 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
*
*****************************************************************************/
package org.eclipse.papyrus.infra.types.rulebased.core;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.gmf.runtime.emf.type.core.ElementTypeRegistry;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
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.SetRequest;
import org.eclipse.papyrus.infra.types.ElementTypeConfiguration;
import org.eclipse.papyrus.infra.types.core.impl.ConfiguredHintedSpecializationElementType;
import org.eclipse.papyrus.infra.types.rulebased.Activator;
import org.eclipse.papyrus.infra.types.rulebased.AndRuleConfiguration;
import org.eclipse.papyrus.infra.types.rulebased.CompositeRuleConfiguration;
import org.eclipse.papyrus.infra.types.rulebased.NotRuleConfiguration;
import org.eclipse.papyrus.infra.types.rulebased.OrRuleConfiguration;
import org.eclipse.papyrus.infra.types.rulebased.RuleBasedTypeConfiguration;
import org.eclipse.papyrus.infra.types.rulebased.RuleConfiguration;
public class DefaultRuleEditHelperAdvice extends AbstractEditHelperAdvice {
@Override
public boolean approveRequest(IEditCommandRequest request) {
List<ConfiguredHintedSpecializationElementType> types = getTypes(request);
// Must approve from the whole hierarchy
for (ConfiguredHintedSpecializationElementType configuredHintedSpecializationElementType : types) {
if (!approveRequest(configuredHintedSpecializationElementType, request)) {
return false;
}
}
return true;
}
/**
* @param request
*
*/
protected List<ConfiguredHintedSpecializationElementType> getTypes(IEditCommandRequest request) {
List<ConfiguredHintedSpecializationElementType> result = new ArrayList<ConfiguredHintedSpecializationElementType>();
if (request instanceof CreateElementRequest) {
IElementType typeToCreate = ((CreateElementRequest) request).getElementType();
List<ConfiguredHintedSpecializationElementType> superConfiguredTypes = getAllTypes(typeToCreate);
result.addAll(superConfiguredTypes);
} else if (request instanceof SetRequest) {
// check the feature to set is a containment feature and element to move is an extended element type
EStructuralFeature feature = ((SetRequest) request).getFeature();
if (feature instanceof EReference) {
if (((EReference) feature).isContainment()) {
// containment. Check the kind of element to edit
Object value = ((SetRequest) request).getValue();
List<Object> values = new ArrayList<Object>();
// value = single object or list ?
if (value instanceof EObject) {
values.add(value);
} else if (value instanceof List) {
values.addAll((List<Object>) value);
}
for (Object object : values) {
if (object instanceof EObject) {
IElementType[] types = ElementTypeRegistry.getInstance().getAllTypesMatching((EObject) object, request.getClientContext());
for (IElementType type : types) {
if (type instanceof ConfiguredHintedSpecializationElementType) {
if (((ConfiguredHintedSpecializationElementType) type).getConfiguration() instanceof RuleBasedTypeConfiguration) {
result.add((ConfiguredHintedSpecializationElementType) type);
List<ConfiguredHintedSpecializationElementType> superConfiguredTypes = getAllSuperConfiguredTypes((ConfiguredHintedSpecializationElementType) type);
result.addAll(superConfiguredTypes);
}
}
}
}
}
}
}
} else if (request instanceof MoveRequest) {
// check the feature to set is a containment feature and element to move is an extended element type
Map<EObject, EReference> objectsToMove = ((MoveRequest) request).getElementsToMove();
for (Entry<EObject, EReference> movedElement : objectsToMove.entrySet()) {
// do not compute with reference, this can be null. This could be interesting to check...
IElementType[] types = ElementTypeRegistry.getInstance().getAllTypesMatching(movedElement.getKey(), request.getClientContext());
for (IElementType type : types) {
if (type instanceof ConfiguredHintedSpecializationElementType) {
if (((ConfiguredHintedSpecializationElementType) type).getConfiguration() instanceof RuleBasedTypeConfiguration) {
result.add((ConfiguredHintedSpecializationElementType) type);
List<ConfiguredHintedSpecializationElementType> superConfiguredTypes = getAllSuperConfiguredTypes((ConfiguredHintedSpecializationElementType) type);
result.addAll(superConfiguredTypes);
}
}
}
}
}
return result;
}
/**
* Returns the list of types (this one and supers) that are configuredTypes.
*
* @param type
* the type from which all s are retrieved
* @return the list of types in the hierarchy of specified type, including type itself if matching. Returns an empty list if none is matching
*/
protected List<ConfiguredHintedSpecializationElementType> getAllTypes(IElementType type) {
List<ConfiguredHintedSpecializationElementType> result = new ArrayList<ConfiguredHintedSpecializationElementType>();
if (!(type instanceof ConfiguredHintedSpecializationElementType)) {
// no need to take care of metamodel types yet
return result;
}
if (((ConfiguredHintedSpecializationElementType) type).getConfiguration() instanceof RuleBasedTypeConfiguration) {
result.add((ConfiguredHintedSpecializationElementType) type);
}
IElementType[] superTypes = type.getAllSuperTypes();
if (superTypes.length == 0) {
return result;
}
// get the reverse order
for (int i = superTypes.length - 1; i >= 0; i--) {
if (superTypes[i] instanceof ConfiguredHintedSpecializationElementType) {
if (((ConfiguredHintedSpecializationElementType) superTypes[i]).getConfiguration() instanceof RuleBasedTypeConfiguration) {
result.add((ConfiguredHintedSpecializationElementType) superTypes[i]);
}
}
}
return result;
}
protected List<ConfiguredHintedSpecializationElementType> getAllSuperConfiguredTypes(ConfiguredHintedSpecializationElementType type) {
IElementType[] superTypes = type.getAllSuperTypes();
if (superTypes.length == 0) {
return Collections.emptyList();
}
List<ConfiguredHintedSpecializationElementType> superExtendedTypes = new ArrayList<ConfiguredHintedSpecializationElementType>();
// get the reverse order
for (int i = superTypes.length - 1; i >= 0; i--) {
if (superTypes[i] instanceof ConfiguredHintedSpecializationElementType) {
if (((ConfiguredHintedSpecializationElementType) superTypes[i]).getConfiguration() instanceof RuleBasedTypeConfiguration) {
superExtendedTypes.add((ConfiguredHintedSpecializationElementType) superTypes[i]);
}
}
}
return superExtendedTypes;
}
protected boolean processCompositeRule(CompositeRuleConfiguration compositeRule, IEditCommandRequest request) {
Iterator<RuleConfiguration> iterator = compositeRule.getComposedRules().iterator();
RuleConfiguration nextComposedRuleConfiguration = iterator.next();
boolean result = processRule(nextComposedRuleConfiguration, request);
while (iterator.hasNext()) {
nextComposedRuleConfiguration = iterator.next();
boolean resultNextComposedRuleConfiguration = processRule(nextComposedRuleConfiguration, request);
if (compositeRule instanceof OrRuleConfiguration) {
if (result == false && resultNextComposedRuleConfiguration) {
result = true;
}
} else if (compositeRule instanceof AndRuleConfiguration) {
if (result == true && !resultNextComposedRuleConfiguration) {
result = false;
}
}
}
return result;
}
protected boolean processRule(RuleConfiguration ruleConfiguration, IEditCommandRequest request) {
if (ruleConfiguration instanceof CompositeRuleConfiguration) {
return processCompositeRule((CompositeRuleConfiguration) ruleConfiguration, request);
} else if (ruleConfiguration instanceof NotRuleConfiguration) {
RuleConfiguration composedRule = ((NotRuleConfiguration) ruleConfiguration).getComposedRule();
return !processRule(composedRule, request);
} else {
return RuleConfigurationTypeRegistry.getInstance().getRule(ruleConfiguration).approveRequest(request);
}
}
protected boolean approveRequest(ConfiguredHintedSpecializationElementType elementType, IEditCommandRequest request) {
ElementTypeConfiguration configuration = ((ConfiguredHintedSpecializationElementType) elementType).getConfiguration();
if (configuration instanceof RuleBasedTypeConfiguration) {
RuleConfiguration ruleConfiguration = ((RuleBasedTypeConfiguration) configuration).getRuleConfiguration();
return processRule(ruleConfiguration, request);
} else {
Activator.log.warn("Expected RuleConfiguration as configuration type for : " + elementType);
}
return true;
}
}
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