/*
* 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.isis.core.metamodel.facets.members.disabled;
import org.apache.isis.applib.annotation.When;
import org.apache.isis.applib.annotation.Where;
import org.apache.isis.applib.events.UsabilityEvent;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.facetapi.Facet;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facets.WhenAndWhereValueFacetAbstract;
import org.apache.isis.core.metamodel.interactions.ActionUsabilityContext;
import org.apache.isis.core.metamodel.interactions.UsabilityContext;
import org.apache.isis.core.metamodel.specloader.specimpl.OneToManyAssociationContributee;
import org.apache.isis.core.metamodel.specloader.specimpl.OneToOneAssociationContributee;
public abstract class DisabledFacetAbstract extends WhenAndWhereValueFacetAbstract implements DisabledFacet {
public static Class<? extends Facet> type() {
return DisabledFacet.class;
}
private final Semantics semantics;
public enum Semantics {
DISABLED,
ENABLED;
}
public DisabledFacetAbstract(final When when, Where where, final FacetHolder holder) {
this(when, where, holder, Semantics.DISABLED);
}
public DisabledFacetAbstract(final When when, Where where, final FacetHolder holder, final Semantics semantics) {
this(type(), when, where, holder, semantics);
}
private DisabledFacetAbstract(final Class<? extends Facet> type, final When when, Where where, final FacetHolder holder, final Semantics semantics) {
super(type, holder, when, where);
this.semantics = semantics;
}
@Override
public String disables(final UsabilityContext<? extends UsabilityEvent> ic) {
if(isInvertedSemantics()) {
return null;
}
if(ic instanceof ActionUsabilityContext && (getFacetHolder() instanceof OneToOneAssociationContributee || getFacetHolder() instanceof OneToManyAssociationContributee)) {
// otherwise ends up vetoing the invocation of the contributing action
return null;
}
final ObjectAdapter target = ic.getTarget();
final String disabledReason = disabledReason(target);
if (disabledReason != null) {
return disabledReason;
}
if (getUnderlyingFacet() != null) {
final DisabledFacet underlyingFacet = (DisabledFacet) getUnderlyingFacet();
return underlyingFacet.disabledReason(target);
}
return null;
}
@Override
public boolean isInvertedSemantics() {
return semantics == Semantics.ENABLED;
}
}