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<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../../jacoco-resources/report.gif" type="image/gif"/><title>CompositeEntityUserActionProvider.java</title><link rel="stylesheet" href="../../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../../index.html" class="el_report">blueMarine II :: UI :: JavaFX</a> &gt; <a href="../index.html" class="el_bundle">it-tidalwave-bluemarine2-ui</a> &gt; <a href="index.source.html" class="el_package">it.tidalwave.bluemarine2.ui.audio.explorer.impl</a> &gt; <span class="el_source">CompositeEntityUserActionProvider.java</span></div><h1>CompositeEntityUserActionProvider.java</h1><pre class="source lang-java linenums">/*
 * *********************************************************************************************************************
 *
 * blueMarine II: Semantic Media Centre
 * http://tidalwave.it/projects/bluemarine2
 *
 * Copyright (C) 2015 - 2021 by Tidalwave s.a.s. (http://tidalwave.it)
 *
 * *********************************************************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the &quot;License&quot;); 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 &quot;AS IS&quot; 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.
 *
 * *********************************************************************************************************************
 *
 * git clone https://bitbucket.org/tidalwave/bluemarine2-src
 * git clone https://github.com/tidalwave-it/bluemarine2-src
 *
 * *********************************************************************************************************************
 */
package it.tidalwave.bluemarine2.ui.audio.explorer.impl;

import javax.annotation.Nonnull;
import it.tidalwave.util.NotFoundException;
import it.tidalwave.role.Composite;
import it.tidalwave.role.ui.UserAction;
import it.tidalwave.role.ui.spi.DefaultUserActionProvider;
import it.tidalwave.dci.annotation.DciRole;
import it.tidalwave.bluemarine2.model.spi.Entity;
import lombok.RequiredArgsConstructor;
import static it.tidalwave.role.SimpleComposite._SimpleComposite_;

/***********************************************************************************************************************
 *
 * A default role for {@link Entity} instances in the context of {@link DefaultAudioExplorerPresentationControl} and
 * containing a {@link Composite} role that provides a default action for that navigates inside the composite contents.
 *
 * FIXME: it should be only injected in entities with the Composite role, but the DCI Role library is not capable of

it should be only injected in entities with the Composite role, but the DCI Role library is not capable of
 * navigating inside data; in other words, @DciRole(datumType = ...) can only refer to a datum class.
 *
 * As a workaround, since this role is a factory of {@link UserAction}s, it just refuses to create them in case there's
 * no Composite.
 *
 * @stereotype  Role
 *
 * @author  Fabrizio Giudici
 *
 **********************************************************************************************************************/
@DciRole(datumType = Entity.class, context = DefaultAudioExplorerPresentationControl.class)
<span class="nc" id="L56">@RequiredArgsConstructor</span>
public class CompositeEntityUserActionProvider extends DefaultUserActionProvider
  {
    @Nonnull
    private final Entity mediaFolder;

    @Nonnull
    private final AudioExplorerPresentationControlSpi control;

    @Override @Nonnull
    public UserAction getDefaultAction()
      throws NotFoundException
      {
        // test for the Composite role
        // FIXME: Composite doesn't work. Introduce Composite8?
<span class="nc" id="L71">        mediaFolder.maybeAs(_SimpleComposite_).orElseThrow(NotFoundException::new);</span>
<span class="nc" id="L72">        return UserAction.of(() -&gt; control.navigateTo(mediaFolder));</span>
      }
  }
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