/* 
    P/P   *  Method: com.dmdirc.addons.ui_swing.dialogs.prefs.PreferencesListCellRenderer__static_init
          */
     1  /*
     2   * Copyright (c) 2006-2009 Chris Smith, Shane Mc Cormack, Gregory Holmes
     3   *
     4   * Permission is hereby granted, free of charge, to any person obtaining a copy
     5   * of this software and associated documentation files (the "Software"), to deal
     6   * in the Software without restriction, including without limitation the rights
     7   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     8   * copies of the Software, and to permit persons to whom the Software is
     9   * furnished to do so, subject to the following conditions:
    10   *
    11   * The above copyright notice and this permission notice shall be included in
    12   * all copies or substantial portions of the Software.
    13   *
    14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    20   * SOFTWARE.
    21   */
    22  
    23  package com.dmdirc.addons.ui_swing.dialogs.prefs;
    24  
    25  import com.dmdirc.config.prefs.PreferencesCategory;
    26  
    27  import java.awt.Component;
    28  import java.awt.Font;
    29  import java.util.HashMap;
    30  import java.util.Map;
    31  
    32  import javax.swing.JLabel;
    33  import javax.swing.JList;
    34  import javax.swing.ListCellRenderer;
    35  
    36  
    37  /**
    38   * Prefs dialog list cell renderer.
    39   *
    40   * @since 0.6.3m1
    41   */
    42  public class PreferencesListCellRenderer extends JLabel implements ListCellRenderer {
    43  
    44      /**
    45       * A version number for this class. It should be changed whenever the class
    46       * structure is changed (or anything else that would prevent serialized
    47       * objects being unserialized with the new class).
    48       */
    49      private static final long serialVersionUID = 1;
    50      /** Number of categories shown. */
    51      private final int numCats;
    52      /** Label map. */
    53      private Map<PreferencesCategory, JLabel> labelMap;
    54      
    55      /**
    56       * Instantiates a new prefs list cell renderer.
    57       *
    58       * @param numCats Number of categories in the list
    59       */
             /* 
    P/P       *  Method: void com.dmdirc.addons.ui_swing.dialogs.prefs.PreferencesListCellRenderer(int)
              * 
              *  Postconditions:
              *    this.labelMap == &amp;new HashMap(PreferencesListCellRenderer#1)
              *    this.numCats == numCats
              *    init'ed(this.numCats)
              *    new HashMap(PreferencesListCellRenderer#1) num objects == 1
              */
    60      public PreferencesListCellRenderer(final int numCats) {
    61          labelMap = new HashMap<PreferencesCategory, JLabel>();
    62          this.numCats = numCats;
    63      }
    64  
    65      /** {@inheritDoc} */
    66      @Override
    67      public final Component getListCellRendererComponent(final JList list,
    68              final Object value, final int index, final boolean isSelected,
    69              final boolean cellHasFocus) {
                 /* 
    P/P           *  Method: Component getListCellRendererComponent(JList, Object, int, bool, bool)
                  * 
                  *  Preconditions:
                  *    this.labelMap != null
                  *    (soft) list != null
                  *    (soft) value != null
                  * 
                  *  Presumptions:
                  *    com.dmdirc.addons.ui_swing.dialogs.prefs.PreferencesListCellRenderer:getFont(...)@77 != null
                  *    com.dmdirc.addons.ui_swing.dialogs.prefs.PreferencesListCellRenderer:getFont(...)@79 != null
                  *    java.util.Map:get(...)@74 != null
                  * 
                  *  Postconditions:
                  *    return_value != null
                  * 
                  *  Test Vectors:
                  *    isSelected: {0}, {1}
                  *    java.util.Map:containsKey(...)@71: {1}, {0}
                  */
    70          final PreferencesCategory cat = (PreferencesCategory) value;
    71          if (!labelMap.containsKey(cat)) {
    72              labelMap.put(cat, new CategoryLabel(list, cat, numCats, index));
    73          }
    74          final JLabel label = labelMap.get(cat);
    75  
    76          if (isSelected) {
    77              label.setFont(getFont().deriveFont(Font.BOLD));
    78          } else {
    79              label.setFont(getFont().deriveFont(Font.PLAIN));
    80          }
    81  
    82          return label;
    83      }
    84  
    85  }