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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>DefaultAudioRendererPresentationControl.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.renderer.impl</a> &gt; <span class="el_source">DefaultAudioRendererPresentationControl.java</span></div><h1>DefaultAudioRendererPresentationControl.java</h1><pre class="source lang-java linenums"><span class="nc" id="L1">/*</span>
 * *********************************************************************************************************************
 *
 * 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.renderer.impl;

import javax.annotation.Nonnull;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import java.time.Duration;
import java.util.stream.Collectors;
import javafx.beans.property.ObjectProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.application.Platform;
import it.tidalwave.util.annotation.VisibleForTesting;
import it.tidalwave.role.ui.UserAction;
import it.tidalwave.messagebus.annotation.ListensTo;
import it.tidalwave.messagebus.annotation.SimpleMessageSubscriber;
import it.tidalwave.bluemarine2.model.MediaItem.Metadata;
import it.tidalwave.bluemarine2.model.PlayList;
import it.tidalwave.bluemarine2.model.audio.AudioFile;
import it.tidalwave.bluemarine2.ui.commons.OnDeactivate;
import it.tidalwave.bluemarine2.ui.commons.RenderAudioFileRequest;
import it.tidalwave.bluemarine2.ui.audio.renderer.AudioRendererPresentation;
import it.tidalwave.bluemarine2.ui.audio.renderer.MediaPlayer;
import it.tidalwave.bluemarine2.ui.audio.renderer.MediaPlayer.Status;
import lombok.extern.slf4j.Slf4j;
import static it.tidalwave.util.PropertyWrapper.wrap;
import static it.tidalwave.role.ui.Displayable._Displayable_;
import static it.tidalwave.bluemarine2.util.Formatters.*;
import static it.tidalwave.bluemarine2.model.MediaItem.Metadata.*;
import static it.tidalwave.bluemarine2.ui.audio.renderer.MediaPlayer.Status.PLAYING;

/***********************************************************************************************************************
 *
 * The Control of the {@link AudioRendererPresentation}.
 *
 * @stereotype  Control
 *
 * @author  Fabrizio Giudici
 *
 **********************************************************************************************************************/
<span class="nc" id="L66">@SimpleMessageSubscriber @Slf4j</span>
<span class="nc" id="L67">public class DefaultAudioRendererPresentationControl</span>
  {
    @Inject
    private AudioRendererPresentation presentation;

    @Inject
    private MediaPlayer mediaPlayer;

<span class="nc" id="L75">    private final AudioRendererPresentation.Properties properties = new AudioRendererPresentation.Properties();</span>

<span class="nc" id="L77">    private Duration duration = Duration.ZERO;</span>

<span class="nc" id="L79">    private PlayList&lt;AudioFile&gt; playList = PlayList.empty();</span>

    // Discriminates a forced stop from media player just terminating
    private boolean stopped;

<span class="nc" id="L84">    private final UserAction prevAction = UserAction.of(() -&gt; changeTrack(playList.previous().get()));</span>

<span class="nc" id="L86">    private final UserAction nextAction = UserAction.of(() -&gt; changeTrack(playList.next().get()));</span>

<span class="nc" id="L88">    private final UserAction rewindAction = UserAction.of(() -&gt; mediaPlayer.rewind());</span>

<span class="nc" id="L90">    private final UserAction fastForwardAction = UserAction.of(() -&gt; mediaPlayer.fastForward());</span>

<span class="nc" id="L92">    private final UserAction pauseAction = UserAction.of(() -&gt; mediaPlayer.pause());</span>

<span class="nc" id="L94">    private final UserAction playAction = UserAction.of(this::play);</span>

<span class="nc" id="L96">    private final UserAction stopAction = UserAction.of(this::stop);</span>

    // FIXME: use expression binding

use expression binding
    // e.g.  properties.progressProperty().bind(mediaPlayer.playTimeProperty().asDuration().dividedBy/duration));
    // FIXME: weak, remove previous listeners
<span class="nc" id="L101">    private final ChangeListener&lt;Duration&gt; l =</span>
                (ObservableValue&lt;? extends Duration&gt; observable,
                 Duration oldValue,
                 Duration newValue) -&gt;
        {
          // FIXME: the control shouldn't mess with JavaFX stuff
<span class="nc" id="L107">          Platform.runLater(() -&gt;</span>
            {
<span class="nc" id="L109">              properties.playTimeProperty().setValue(format(newValue));</span>
<span class="nc" id="L110">              properties.progressProperty().setValue((double)newValue.toMillis() / duration.toMillis());</span>
<span class="nc" id="L111">            });</span>
<span class="nc" id="L112">        };</span>

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @PostConstruct
    @VisibleForTesting void initialize()
      {
<span class="nc" id="L121">        presentation.bind(properties,</span>
                          prevAction, rewindAction, stopAction, pauseAction, playAction, fastForwardAction, nextAction);
<span class="nc" id="L123">      }</span>

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @VisibleForTesting void onRenderAudioFileRequest (@ListensTo @Nonnull final RenderAudioFileRequest request)
      throws MediaPlayer.Exception
      {
<span class="nc" id="L132">        log.info(&quot;onRenderAudioFileRequest({})&quot;, request);</span>

<span class="nc" id="L134">        playList = request.getPlayList();</span>
<span class="nc" id="L135">        setAudioFile(playList.getCurrentItem().get());</span>
<span class="nc" id="L136">        bindMediaPlayer();</span>
<span class="nc" id="L137">        presentation.showUp(this);</span>
<span class="nc" id="L138">        presentation.focusOnPlayButton();</span>
<span class="nc" id="L139">      }</span>

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    @OnDeactivate
    @VisibleForTesting OnDeactivate.Result onDeactivate()
      throws MediaPlayer.Exception
      {
<span class="nc" id="L149">        stop();</span>
<span class="nc" id="L150">        unbindMediaPlayer();</span>
<span class="nc" id="L151">        playList = PlayList.empty();</span>
<span class="nc" id="L152">        return OnDeactivate.Result.PROCEED;</span>
      }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    private void setAudioFile (@Nonnull final AudioFile audioFile)
      throws MediaPlayer.Exception
      {
<span class="nc" id="L162">        log.info(&quot;setAudioFile({})&quot;, audioFile);</span>
<span class="nc" id="L163">        final Metadata metadata = audioFile.getMetadata();</span>
<span class="nc" id="L164">        log.info(&quot;&gt;&gt;&gt;&gt; metadata:  {}&quot;, metadata);</span>

        // FIXME: the control shouldn't mess with JavaFX stuff
        // FIXME: this performs some (short) queries that are executed in the JavaFX thread
<span class="nc" id="L168">        Platform.runLater(() -&gt;</span>
          {
<span class="nc" id="L170">            properties.titleProperty().setValue(metadata.get(TITLE).orElse(&quot;&quot;));</span>
<span class="nc" id="L171">            properties.artistProperty().setValue(audioFile.findMakers().stream()</span>
<span class="nc" id="L172">                    .map(maker -&gt; maker.as(_Displayable_).getDisplayName())</span>
<span class="nc" id="L173">                    .collect(Collectors.joining(&quot;, &quot;)));</span>
<span class="nc" id="L174">            properties.composerProperty().setValue(audioFile.findComposers().stream()</span>
<span class="nc" id="L175">                    .map(composer -&gt; composer.as(_Displayable_).getDisplayName())</span>
<span class="nc" id="L176">                    .collect(Collectors.joining(&quot;, &quot;)));</span>
<span class="nc" id="L177">            duration = metadata.get(DURATION).orElse(Duration.ZERO);</span>
<span class="nc" id="L178">            properties.durationProperty().setValue(format(duration));</span>
<span class="nc" id="L179">            properties.folderNameProperty().setValue(</span>
<span class="nc" id="L180">                    audioFile.getRecord().map(record -&gt; record.as(_Displayable_).getDisplayName()).orElse(&quot;&quot;));</span>
<span class="nc" id="L181">            properties.nextTrackProperty().setValue(</span>
<span class="nc bnc" id="L182" title="All 2 branches missed.">                    ((playList.getSize() == 1) ? &quot;&quot; : String.format(&quot;%d / %d&quot;, playList.getIndex() + 1, playList.getSize()) +</span>
<span class="nc" id="L183">                    playList.peekNext().map(t -&gt; &quot; - Next track: &quot; + t.getMetadata().get(TITLE).orElse(&quot;&quot;)).orElse(&quot;&quot;)));</span>
<span class="nc" id="L184">          });</span>

<span class="nc" id="L186">        mediaPlayer.setMediaItem(audioFile);</span>
<span class="nc" id="L187">      }</span>

    /*******************************************************************************************************************
     *
     *
     *
     ******************************************************************************************************************/
    private void onMediaPlayerStarted()
      {
<span class="nc" id="L196">        log.info(&quot;onMediaPlayerStarted()&quot;);</span>
//        presentation.focusOnStopButton();
<span class="nc" id="L198">      }</span>

    /*******************************************************************************************************************
     *
     *
     *
     ******************************************************************************************************************/
    private void onMediaPlayerStopped()
      {
<span class="nc" id="L207">        log.info(&quot;onMediaPlayerStopped()&quot;);</span>

<span class="nc bnc" id="L209" title="All 2 branches missed.">        if (!stopped)</span>
          {
<span class="nc" id="L211">            presentation.focusOnPlayButton();</span>
          }

<span class="nc bnc" id="L214" title="All 4 branches missed.">        if (!stopped &amp;&amp; playList.hasNext())</span>
          {
            // FIXME: check whether the disk is not gapless, and eventually pause
            try
              {
<span class="nc" id="L219">                setAudioFile(playList.next().get());</span>
<span class="nc" id="L220">                play();</span>
              }
<span class="nc" id="L222">            catch (MediaPlayer.Exception e)</span>
              {
<span class="nc" id="L224">                log.error(&quot;&quot;, e);</span>
<span class="nc" id="L225">              }</span>
          }
<span class="nc" id="L227">      }</span>

    /*******************************************************************************************************************
     *
     *
     *
     ******************************************************************************************************************/
    private void play()
      throws MediaPlayer.Exception
      {
<span class="nc" id="L237">        stopped = false;</span>
<span class="nc" id="L238">        mediaPlayer.play();</span>
<span class="nc" id="L239">      }</span>

    /*******************************************************************************************************************
     *
     *
     *
     ******************************************************************************************************************/
    private void stop()
      throws MediaPlayer.Exception
      {
<span class="nc" id="L249">        stopped = true;</span>
<span class="nc" id="L250">        mediaPlayer.stop();</span>
<span class="nc" id="L251">      }</span>

    /*******************************************************************************************************************
     *
     *
     *
     ******************************************************************************************************************/
    private void changeTrack (@Nonnull final AudioFile audioFile)
      throws MediaPlayer.Exception
      {
<span class="nc" id="L261">        final boolean wasPlaying = mediaPlayer.statusProperty().get().equals(PLAYING);</span>

<span class="nc bnc" id="L263" title="All 2 branches missed.">        if (wasPlaying)</span>
          {
<span class="nc" id="L265">            stop();</span>
          }

<span class="nc" id="L268">        setAudioFile(audioFile);</span>

<span class="nc bnc" id="L270" title="All 2 branches missed.">        if (wasPlaying)</span>
          {
<span class="nc" id="L272">            play();</span>
          }
<span class="nc" id="L274">      }</span>

    /*******************************************************************************************************************
     *
     * Binds to the {@link MediaPlayer}.
     *
     ******************************************************************************************************************/
    @VisibleForTesting void bindMediaPlayer()
      {
<span class="nc" id="L283">        log.debug(&quot;bindMediaPlayer()&quot;);</span>
<span class="nc" id="L284">        final ObjectProperty&lt;Status&gt; status = mediaPlayer.statusProperty();</span>
<span class="nc" id="L285">        wrap(stopAction.enabled()).bind(status.isEqualTo(PLAYING));</span>
<span class="nc" id="L286">        wrap(pauseAction.enabled()).bind(status.isEqualTo(PLAYING));</span>
<span class="nc" id="L287">        wrap(playAction.enabled()).bind(status.isNotEqualTo(PLAYING));</span>
<span class="nc" id="L288">        wrap(prevAction.enabled()).bind(playList.hasPreviousProperty());</span>
<span class="nc" id="L289">        wrap(nextAction.enabled()).bind(playList.hasNextProperty());</span>
<span class="nc" id="L290">        mediaPlayer.playTimeProperty().addListener(l);</span>

<span class="nc" id="L292">        status.addListener((observable, oldValue, newValue) -&gt;</span>
          {
<span class="nc bnc" id="L294" title="All 3 branches missed.">            switch (newValue)</span>
              {
                case STOPPED:
<span class="nc" id="L297">                    onMediaPlayerStopped();</span>
<span class="nc" id="L298">                    break;</span>

                case PLAYING:
<span class="nc" id="L301">                    onMediaPlayerStarted();</span>
                    break;
              }
<span class="nc" id="L304">          });</span>
<span class="nc" id="L305">      }</span>

    /*******************************************************************************************************************
     *
     * Unbinds from the {@link MediaPlayer}.
     *
     ******************************************************************************************************************/
    @VisibleForTesting void unbindMediaPlayer()
      {
<span class="nc" id="L314">        log.debug(&quot;unbindMediaPlayer()&quot;);</span>
<span class="nc" id="L315">        wrap(stopAction.enabled()).unbind();</span>
<span class="nc" id="L316">        wrap(pauseAction.enabled()).unbind();</span>
<span class="nc" id="L317">        wrap(playAction.enabled()).unbind();</span>
<span class="nc" id="L318">        wrap(prevAction.enabled()).unbind();</span>
<span class="nc" id="L319">        wrap(nextAction.enabled()).unbind();</span>
<span class="nc" id="L320">        mediaPlayer.playTimeProperty().removeListener(l);</span>
<span class="nc" id="L321">      }</span>
  }
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