1 /*
2
3 dsh-identify Lightweight components for identifiable beans.
4 Copyright (c) 2003-2019 held jointly by the individual authors.
5
6 This library is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 3 of the License, or (at
9 your option) any later version.
10
11 This library is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
14 License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with this library; if not, write to the Free Software Foundation,
18 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
19
20 > http://www.fsf.org/licensing/licenses/lgpl.html
21 > http://www.opensource.org/licenses/lgpl-license.php
22
23 */
24 package org.dishevelled.identify;
25
26 import java.awt.Image;
27 import java.awt.Component;
28
29 import javax.swing.JList;
30 import javax.swing.JLabel;
31 import javax.swing.ImageIcon;
32 import javax.swing.DefaultListCellRenderer;
33
34 import org.dishevelled.iconbundle.IconSize;
35 import org.dishevelled.iconbundle.IconState;
36 import org.dishevelled.iconbundle.IconBundle;
37 import org.dishevelled.iconbundle.IconTextDirection;
38
39 /**
40 * List cell renderer that displays the name property value
41 * and appropriate icon from an icon bundle for a given bean.
42 *
43 * @author Michael Heuer
44 */
45 public class IdListCellRenderer
46 extends StripeListCellRenderer
47 {
48 /** Default icon size. */
49 public static final IconSize DEFAULT_ICON_SIZE = IconSize.DEFAULT_16X16;
50
51 /** Icon size. */
52 private IconSize iconSize;
53
54 /** ImageIcon wrapper for image from icon bundle. */
55 private transient ImageIcon imageIcon;
56
57
58 /**
59 * Create a new list cell renderer for identifiable beans with
60 * the default icon size.
61 *
62 * @see #DEFAULT_ICON_SIZE
63 */
64 public IdListCellRenderer()
65 {
66 this(DEFAULT_ICON_SIZE);
67 }
68
69 /**
70 * Create a new list cell renderer for identifiable beans with
71 * the specified icon size.
72 *
73 * @param iconSize icon size, must not be null
74 */
75 public IdListCellRenderer(final IconSize iconSize)
76 {
77 super();
78 setIconSize(iconSize);
79 }
80
81
82 /**
83 * Return the icon size for this list cell renderer.
84 *
85 * @return the icon size for this list cell renderer
86 */
87 public final IconSize getIconSize()
88 {
89 return iconSize;
90 }
91
92 /**
93 * Set the icon size for this list cell renderer to <code>iconSize</code>.
94 *
95 * <p>This is a bound property.</p>
96 *
97 * @param iconSize icon size, must not be null
98 */
99 public final void setIconSize(final IconSize iconSize)
100 {
101 if (iconSize == null)
102 {
103 throw new IllegalArgumentException("iconSize must not be null");
104 }
105 IconSize oldIconSize = this.iconSize;
106 this.iconSize = iconSize;
107 firePropertyChange("iconSize", oldIconSize, this.iconSize);
108 }
109
110 @Override
111 public Component getListCellRendererComponent(final JList list,
112 final Object value,
113 final int index,
114 final boolean isSelected,
115 final boolean hasFocus)
116 {
117 JLabel label = (JLabel) super.getListCellRendererComponent(list, value, index, isSelected, hasFocus);
118
119 String name = IdentifyUtils.getNameFor(value);
120 label.setText(name);
121
122 IconBundle iconBundle = IdentifyUtils.getIconBundleFor(value);
123
124 if (iconBundle == null)
125 {
126 label.setIcon(null);
127 }
128 else
129 {
130 IconTextDirection textDirection = IdentifyUtils.determineTextDirection(label);
131 Image image = iconBundle.getImage(label, textDirection, IconState.NORMAL, iconSize);
132
133 if (imageIcon == null)
134 {
135 imageIcon = new ImageIcon(image);
136 }
137 else
138 {
139 imageIcon.setImage(image);
140 }
141
142 label.setIcon(imageIcon);
143 }
144
145 return label;
146 }
147 }