Content of file ContentPresentationModelFactory.java.html
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* #%L
* *********************************************************************************************************************
*
* NorthernWind - lightweight CMS
* http://northernwind.tidalwave.it - git clone git@bitbucket.org:tidalwave/northernwind-rca-src.git
* %%
* Copyright (C) 2013 - 2021 Tidalwave s.a.s. (http://tidalwave.it)
* %%
* *********************************************************************************************************************
*
* Licensed 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.
*
* *********************************************************************************************************************
*
*
* *********************************************************************************************************************
* #L%
*/
package it.tidalwave.northernwind.model.impl.admin.role;
import javax.annotation.Nonnull;
import java.beans.PropertyChangeSupport;
import java.util.Collection;
import java.util.WeakHashMap;
import it.tidalwave.util.Callback;
import it.tidalwave.util.NamedCallback;
import it.tidalwave.util.annotation.VisibleForTesting;
import it.tidalwave.role.ui.PresentationModel;
import it.tidalwave.role.ui.PresentationModelFactory;
import it.tidalwave.messagebus.annotation.ListensTo;
import it.tidalwave.messagebus.annotation.SimpleMessageSubscriber;
import it.tidalwave.northernwind.core.model.Content;
import it.tidalwave.northernwind.rca.ui.event.ContentCreatedEvent;
import lombok.extern.slf4j.Slf4j;
import static it.tidalwave.role.ui.PresentationModel.PROPERTY_CHILDREN;
import static it.tidalwave.util.Parameters.r;
/***********************************************************************************************************************
*
* An implementation of {@link PresentationModelFactory} for {@link Content} that keeps track of
* created instances and dispatches {@link ContentCreatedEvent}s to them. This to avoid that every single
* {@code ContentPresentationModel} subscribes to the message bus and have all of them but one to discard the received
* event if it's not related to their datum.
*
* @author Fabrizio Giudici
*
**********************************************************************************************************************/
<span class="fc" id="L56">@SimpleMessageSubscriber @Slf4j</span>
<span class="fc" id="L57">public class ContentPresentationModelFactory implements PresentationModelFactory</span>
{
<span class="fc" id="L59"> @VisibleForTesting final WeakHashMap<Content, PresentationModel> map = new WeakHashMap<>();</span>
@Override @Nonnull
public PresentationModel createPresentationModel (@Nonnull final Object datum,
@Nonnull final Collection<Object> roles)
{
<span class="fc" id="L65"> final Callback cb = NamedCallback.of(PresentationModel.CALLBACK_DISPOSE, () -></span>
{
<span class="fc" id="L67"> map.remove(datum);</span>
<span class="fc" id="L68"> log.debug(">>>> unregistered: {}", this);</span>
<span class="fc" id="L69"> });</span>
<span class="fc" id="L71"> final PresentationModel contentPM = PresentationModel.of(datum, r(cb, roles));</span>
<span class="fc" id="L72"> map.put((Content)datum, contentPM);</span>
<span class="fc" id="L73"> log.debug(">>>> created and registered: {}", contentPM);</span>
<span class="fc" id="L74"> return contentPM;</span>
}
@VisibleForTesting void onContentCreated (@ListensTo @Nonnull final ContentCreatedEvent event)
{
<span class="nc" id="L79"> log.debug("onContentCreated({})", event);</span>
// FIXME: map.getOptional(event.getParentContent()).ifPresent(cpm -> ...);
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