modules/midp-lcdui/src/test/java/lcdui/list/ListItem.java

   1 // -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the Mozilla Public License Version 2.0.
   7 // See license.mkd for licensing and copyright information.
   8 // ---------------------------------------------------------------------------
   9
  10 package lcdui.list;
  11
  12 import java.util.Objects;
  13 import java.util.Random;
  14 import javax.microedition.lcdui.Font;
  15 import javax.microedition.lcdui.Image;
  16 import javax.microedition.lcdui.List;
  17
  18 /**
  19  * This stores information about a single list item.
  20  *
  21  * @since 2020/11/08
  22  */
  23 public final class ListItem
  24 {
  25         /** Label. */
  26         public String label;
  27
  28         /** Image. */
  29         public Image image;
  30
  31         /** Font. */
  32         public Font font;
  33
  34         /** Is this enabled? */
  35         public boolean enabled;
  36
  37         /** Is this selected? */
  38         public boolean selected;
  39
  40         /**
  41          * Initializes the given list item.
  42          *
  43          * @param __label The label.
  44          * @param __image The image.
  45          * @param __font The font.
  46          * @param __enabled Is this enabled?
  47          * @param __selected Is this selected?
  48          * @throws NullPointerException If there is no label.
  49          * @since 2020/11/08
  50          */
  51         public ListItem(String __label, Image __image, Font __font,
  52                 boolean __enabled, boolean __selected)
  53                 throws NullPointerException
  54         {
  55                 if (__label == null)
  56                         throw new NullPointerException("NARG");
  57
  58                 this.label = __label;
  59                 this.image = __image;
  60                 this.font = __font;
  61                 this.enabled = __enabled;
  62                 this.selected = __selected;
  63         }
  64
  65         /**
  66          * {@inheritDoc}
  67          * @since 2020/11/08
  68          */
  69         @Override
  70         public boolean equals(Object __o)
  71         {
  72                 if (__o == this)
  73                         return true;
  74
  75                 if (!(__o instanceof ListItem))
  76                         return false;
  77
  78                 ListItem o = (ListItem)__o;
  79                 return this.hashCode() == o.hashCode() &&
  80                         this.enabled == o.enabled &&
  81                         this.selected == o.selected &&
  82                         Objects.equals(this.label, o.label) &&
  83                         Objects.equals(this.image, o.image) &&
  84                         Objects.equals(this.font, o.font);
  85         }
  86
  87         /**
  88          * {@inheritDoc}
  89          * @since 2020/11/08
  90          */
  91         @Override
  92         public int hashCode()
  93         {
  94                 int rv = 0;
  95
  96                 rv ^= (this.selected ? 0x8000_0000 : 0x4000_0000);
  97                 rv ^= (this.enabled ? 0x0800_0000 : 0x0400_0000);
  98                 rv ^= (this.label != null ?
  99                         (this.label.hashCode() | 0x0080_0000) : 0x0040_0000);
 100                 rv ^= (this.image != null ?
 101                         (this.image.hashCode() | 0x0008_0000) : 0x0004_0000);
 102                 rv ^= (this.font != null ?
 103                         (this.font.hashCode() | 0x0000_8000) : 0x0000_4000);
 104
 105                 return rv;
 106         }
 107
 108         /**
 109          * Sets the given list item.
 110          *
 111          * @param __list The list to set.
 112          * @param __dx The index to set.
 113          * @throws NullPointerException On null arguments.
 114          * @since 2020/11/08
 115          */
 116         public final void into(List __list, int __dx)
 117                 throws NullPointerException
 118         {
 119                 if (__list == null)
 120                         throw new NullPointerException("NARG");
 121
 122                 __list.set(__dx, this.label, this.image);
 123                 __list.setFont(__dx, this.font);
 124                 __list.setSelectedIndex(__dx, this.selected);
 125                 __list.setEnabled(__dx, this.enabled);
 126         }
 127
 128         /**
 129          * Returns information on the given list item.
 130          *
 131          * @param __list The list to get from.
 132          * @param __dx The index to read.
 133          * @return The resulting list item.
 134          * @throws NullPointerException On null arguments.
 135          * @since 2020/11/08
 136          */
 137         public static ListItem of(List __list, int __dx)
 138                 throws NullPointerException
 139         {
 140                 if (__list == null)
 141                         throw new NullPointerException("NARG");
 142
 143                 return new ListItem(__list.getString(__dx),
 144                         __list.getImage(__dx),
 145                         __list.getFont(__dx),
 146                         __list.isEnabled(__dx),
 147                         __list.isSelected(__dx));
 148         }
 149
 150         /**
 151          * Returns a randomized item.
 152          *
 153          * @param __rand The randomized source.
 154          * @return A newly randomized list item.
 155          * @throws NullPointerException On null arguments.
 156          * @since 2020/11/13
 157          */
 158         public static ListItem random(Random __rand)
 159                 throws NullPointerException
 160         {
 161                 if (__rand == null)
 162                         throw new NullPointerException("NARG");
 163
 164                 // Face
 165                 int face;
 166                 switch (__rand.nextInt(3))
 167                 {
 168                         case 0:         face = Font.FACE_MONOSPACE; break;
 169                         case 1:         face = Font.FACE_PROPORTIONAL; break;
 170                         default:        face = Font.FACE_SYSTEM; break;
 171                 }
 172
 173                 // Style
 174                 int style;
 175                 switch (__rand.nextInt(4))
 176                 {
 177                         case 0:         style = Font.STYLE_BOLD; break;
 178                         case 1:         style = Font.STYLE_ITALIC; break;
 179                         case 2:         style = Font.STYLE_PLAIN; break;
 180                         default:        style = Font.STYLE_UNDERLINED; break;
 181                 }
 182
 183                 // Size
 184                 int size;
 185                 switch (__rand.nextInt(3))
 186                 {
 187                         case 0:         size = Font.SIZE_LARGE; break;
 188                         case 1:         size = Font.SIZE_MEDIUM; break;
 189                         default:        size = Font.SIZE_SMALL; break;
 190                 }
 191
 192                 return new ListItem(
 193                         Character.toString((char)('a' + __rand.nextInt(25))),
 194                         Image.createImage(1 + __rand.nextInt(16),
 195                                 1 + __rand.nextInt(16)),
 196                         Font.getFont(face, style, size),
 197                         __rand.nextBoolean(), __rand.nextBoolean());
 198         }
 199 }