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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>ChangeListenerSelectableAdapter.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">SteelBlue - JavaFX Bindings</a> &gt; <a href="index.source.html" class="el_package">it.tidalwave.role.ui.javafx.impl.common</a> &gt; <span class="el_source">ChangeListenerSelectableAdapter.java</span></div><h1>ChangeListenerSelectableAdapter.java</h1><pre class="source lang-java linenums">/*
 * *********************************************************************************************************************
 *
 * SteelBlue: DCI User Interfaces
 * http://tidalwave.it/projects/steelblue
 *
 * 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/steelblue-src
 * git clone https://github.com/tidalwave-it/steelblue-src
 *
 * *********************************************************************************************************************
 */
package it.tidalwave.role.ui.javafx.impl.common;

import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.concurrent.Executor;
import javafx.scene.control.TreeItem;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import it.tidalwave.role.ui.PresentationModel;
import it.tidalwave.role.ui.Selectable;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import static it.tidalwave.role.ui.Selectable._Selectable_;

/***********************************************************************************************************************
 *
 * @author  Fabrizio Giudici
 *
 **********************************************************************************************************************/
<span class="pc bpc" id="L47" title="1 of 2 branches missed.">@RequiredArgsConstructor @Slf4j</span>
public class ChangeListenerSelectableAdapter implements ChangeListener&lt;PresentationModel&gt;
  {
    @Nonnull
    protected final Executor executor;

<span class="fc" id="L53">    private final ChangeListener&lt;TreeItem&lt;PresentationModel&gt;&gt; treeItemChangeListener =</span>
            // FIXME: test null oldValue, newValue?

test null oldValue, newValue?
<span class="fc" id="L55">            (observable, oldValue, newValue) -&gt; changed(null, safe(oldValue), safe(newValue));</span>

    @Override
    public void changed (@Nonnull final ObservableValue&lt;? extends PresentationModel&gt; ov,
                         @Nonnull final PresentationModel oldPm,
                         @CheckForNull final PresentationModel newPm)
      {
<span class="pc bpc" id="L62" title="1 of 2 branches missed.">        if (newPm != null) // no selection</span>
          {
<span class="fc" id="L64">            executor.execute(() -&gt; newPm.maybeAs(_Selectable_).ifPresent(Selectable::select));</span>
          }
<span class="fc" id="L66">      }</span>

    @Nonnull
    public ChangeListener&lt;TreeItem&lt;PresentationModel&gt;&gt; asTreeItemChangeListener()
      {
<span class="fc" id="L71">        return treeItemChangeListener;</span>
      }

    @Nullable
    private static PresentationModel safe (@Nullable final TreeItem&lt;PresentationModel&gt; value)
      {
<span class="pc bpc" id="L77" title="1 of 2 branches missed.">        return (value != null) ? value.getValue() : null;</span>
      }
  }
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