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ActionDomainEventFacet.java
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ActionDomainEventFacet.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.causeway.core.metamodel.facets.actions.action.invocation;
import java.util.Optional;
import org.apache.causeway.applib.events.domain.AbstractDomainEvent;
import org.apache.causeway.applib.events.domain.ActionDomainEvent;
import org.apache.causeway.applib.services.i18n.TranslatableString;
import org.apache.causeway.applib.services.i18n.TranslationContext;
import org.apache.causeway.applib.services.i18n.TranslationService;
import org.apache.causeway.commons.collections.Can;
import org.apache.causeway.commons.internal.assertions._Assert;
import org.apache.causeway.core.metamodel.consent.Consent.VetoReason;
import org.apache.causeway.core.metamodel.facetapi.Facet;
import org.apache.causeway.core.metamodel.facetapi.FacetHolder;
import org.apache.causeway.core.metamodel.facets.DomainEventFacetAbstract;
import org.apache.causeway.core.metamodel.facets.DomainEventHelper;
import org.apache.causeway.core.metamodel.facets.object.domainobject.domainevents.ActionDomainEventDefaultFacetForDomainObjectAnnotation;
import org.apache.causeway.core.metamodel.interactions.ActionInteractionContext;
import org.apache.causeway.core.metamodel.interactions.ActionValidityContext;
import org.apache.causeway.core.metamodel.interactions.DisablingInteractionAdvisor;
import org.apache.causeway.core.metamodel.interactions.HidingInteractionAdvisor;
import org.apache.causeway.core.metamodel.interactions.InteractionContext;
import org.apache.causeway.core.metamodel.interactions.UsabilityContext;
import org.apache.causeway.core.metamodel.interactions.ValidatingInteractionAdvisor;
import org.apache.causeway.core.metamodel.interactions.ValidityContext;
import org.apache.causeway.core.metamodel.interactions.VisibilityContext;
import org.apache.causeway.core.metamodel.spec.ObjectSpecification;
import org.apache.causeway.core.metamodel.spec.feature.ObjectAction;
public class ActionDomainEventFacet
extends DomainEventFacetAbstract<ActionDomainEvent<?>>
implements
HidingInteractionAdvisor,
DisablingInteractionAdvisor,
ValidatingInteractionAdvisor {
private static Class<? extends Facet> type() {
return ActionDomainEventFacet.class;
}
private final TranslationService translationService;
private final TranslationContext translationContext;
private final DomainEventHelper domainEventHelper;
public ActionDomainEventFacet(
final Class<? extends ActionDomainEvent<?>> eventType,
final EventTypeOrigin eventTypeOrigin,
final FacetHolder holder) {
super(type(), eventType, eventTypeOrigin, holder);
this.translationService = getTranslationService();
this.translationContext = holder.getTranslationContext();
domainEventHelper = DomainEventHelper.ofServiceRegistry(getServiceRegistry());
}
@Override
public void initWithMixee(final ObjectSpecification mixeeSpec) {
if(!getEventTypeOrigin().isDefault()) return; // skip if already set explicitly
mixeeSpec
.lookupFacet(ActionDomainEventDefaultFacetForDomainObjectAnnotation.class)
.ifPresent(facetOnMixee->
super.updateEventType(facetOnMixee.getEventType(), EventTypeOrigin.ANNOTATED_OBJECT));
}
@Override
public String hides(final VisibilityContext ic) {
final ActionDomainEvent<?> event =
domainEventHelper.postEventForAction(
AbstractDomainEvent.Phase.HIDE,
getEventType(),
actionFrom(ic), getFacetHolder(),
ic.getHead(),
// corresponds to programming model 'hidePlaceOrder()',
// which does no longer consider args
Can.empty(),
// result pojo n/a
null);
if (event != null && event.isHidden()) {
return "Hidden by subscriber";
}
return null;
}
@Override
public Optional<VetoReason> disables(final UsabilityContext ic) {
final ActionDomainEvent<?> event =
domainEventHelper.postEventForAction(
AbstractDomainEvent.Phase.DISABLE,
getEventType(),
actionFrom(ic), getFacetHolder(),
ic.getHead(),
// corresponds to programming model 'disablePlaceOrder()',
// which does no longer consider args
Can.empty(),
// result pojo n/a
null);
if (event != null && event.isDisabled()) {
final TranslatableString reasonTranslatable = event.getDisabledReasonTranslatable();
final String reasonString = reasonTranslatable != null
? reasonTranslatable.translate(translationService, translationContext)
: event.getDisabledReason();
if(reasonString!=null) {
return VetoReason.explicit(reasonString).toOptional();
}
}
return Optional.empty();
}
@Override
public String invalidates(final ValidityContext ic) {
_Assert.assertTrue(ic instanceof ActionValidityContext, ()->
String.format("expecting an action context but got %s", ic.getIdentifier()));
final ActionValidityContext aic = (ActionValidityContext) ic;
final ActionDomainEvent<?> event =
domainEventHelper.postEventForAction(
AbstractDomainEvent.Phase.VALIDATE,
getEventType(),
actionFrom(ic), getFacetHolder(),
ic.getHead(), aic.getArgs(),
null);
if (event != null && event.isInvalid()) {
final TranslatableString reasonTranslatable = event.getInvalidityReasonTranslatable();
if(reasonTranslatable != null) {
return reasonTranslatable.translate(translationService, translationContext);
}
return event.getInvalidityReason();
}
return null;
}
// -- HELPER
private static ObjectAction actionFrom(final InteractionContext ic) {
if(!(ic instanceof ActionInteractionContext)) {
throw new IllegalStateException(
"Expecting ic to be of type ActionInteractionContext, instead was: " + ic);
}
return ((ActionInteractionContext) ic).getObjectAction();
}
}