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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>StackPaneSelector.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</a> &gt; <span class="el_source">StackPaneSelector.java</span></div><h1>StackPaneSelector.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;

import javax.annotation.Nonnull;
import java.util.WeakHashMap;
import javafx.collections.ObservableList;
import javafx.scene.Node;
import javafx.scene.layout.StackPane;
import lombok.extern.slf4j.Slf4j;

/***********************************************************************************************************************
 *
 * A facility that is used to manage areas in the UI where multiple contents should appear in a mutually exclusive
 * way.
 *
 * @author Fabrizio Giudici
 *
 **********************************************************************************************************************/
<span class="nc" id="L44">@Slf4j</span>
<span class="nc" id="L45">public class StackPaneSelector // FIXME: rename, introduce interface</span>

rename, introduce interface
  {
<span class="nc" id="L47">    private final WeakHashMap&lt;String, StackPane&gt; stackPaneMapByArea = new WeakHashMap&lt;&gt;();</span>

    /*******************************************************************************************************************
     *
     * Register a new area associated to a {@link StackPane}.
     *
     * @param   area        the area name
     * @param   stackPane   the {@code StackPane}
     *
     ******************************************************************************************************************/
    public void registerArea (@Nonnull final String area, @Nonnull final StackPane stackPane)
      {
<span class="nc" id="L59">        log.debug(&quot;registerArea({}, {})&quot;, area, stackPane);</span>
<span class="nc" id="L60">        stackPaneMapByArea.put(area, stackPane);</span>
<span class="nc" id="L61">      }</span>

    /*******************************************************************************************************************
     *
     * Add a {@link Node} to a previously registered area.
     *
     * @param   area        the area name
     * @param   node        the {@code Node}
     *
     ******************************************************************************************************************/
    public void add (@Nonnull final String area, @Nonnull final Node node)
      {
<span class="nc" id="L73">        node.setVisible(false);</span>
<span class="nc" id="L74">        findStackPaneFor(area).getChildren().add(node);</span>
<span class="nc" id="L75">      }</span>

    /*******************************************************************************************************************
     *
     * Sets the given {@link Node} as the shown one in the area where it is contained.
     *
     * @param   node        the {@code Node}
     *
     ******************************************************************************************************************/
    public void setShownNode (@Nonnull final Node node)
      {
<span class="nc" id="L86">        log.info(&quot;setShownNode({})&quot;, node);</span>

<span class="nc bnc" id="L88" title="All 2 branches missed.">        for (final StackPane stackPane : stackPaneMapByArea.values())</span>
          {
<span class="nc" id="L90">            final ObservableList&lt;Node&gt; children = stackPane.getChildren();</span>

<span class="nc bnc" id="L92" title="All 2 branches missed.">            if (children.contains(node))</span>
              {
<span class="nc" id="L94">                children.forEach(child -&gt; child.setVisible(false));</span>
<span class="nc" id="L95">                node.setVisible(true); // at last</span>
<span class="nc" id="L96">                return;</span>
              }
<span class="nc" id="L98">          }</span>

<span class="nc" id="L100">        throw new IllegalArgumentException(&quot;Node not in a managed StackPange: &quot; + node);</span>

      }

    /*******************************************************************************************************************
     *
     ******************************************************************************************************************/
    @Nonnull
    private StackPane findStackPaneFor (@Nonnull final String area)
      {
<span class="nc" id="L110">        final StackPane stackPane = stackPaneMapByArea.get(area);</span>

<span class="nc bnc" id="L112" title="All 2 branches missed.">        if (stackPane == null)</span>
          {
<span class="nc" id="L114">            throw new IllegalArgumentException(&quot;Area not handled: &quot; + area);</span>
          }

<span class="nc" id="L117">        return stackPane;</span>
      }
 }
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