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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | +package javax.swing.plaf.basic; | |
| 26 | + | |
| 27 | +import javax.swing.*; | |
| 28 | +import javax.swing.event.*; | |
| 29 | +import javax.swing.border.*; | |
| 30 | + | |
| 31 | +import java.awt.*; | |
| 32 | + | |
| 33 | +import java.io.Serializable; | |
| 34 | + | |
| 35 | + | |
| 36 | +/** | |
| 37 | + * ComboBox renderer | |
| 38 | + * <p> | |
| 39 | + * <strong>Warning:</strong> | |
| 40 | + * Serialized objects of this class will not be compatible with | |
| 41 | + * future Swing releases. The current serialization support is | |
| 42 | + * appropriate for short term storage or RMI between applications running | |
| 43 | + * the same version of Swing. As of 1.4, support for long term storage | |
| 44 | + * of all JavaBeans<sup><font size="-2">TM</font></sup> | |
| 45 | + * has been added to the <code>java.beans</code> package. | |
| 46 | + * Please see {@link java.beans.XMLEncoder}. | |
| 47 | + * | |
| 48 | + * @author Arnaud Weber | |
| 49 | + */ | |
| 50 | +public class BasicComboBoxRenderer extends JLabel | |
| 51 | +implements ListCellRenderer, Serializable { | |
| 52 | + | |
| 53 | + /** | |
| 54 | + * An empty <code>Border</code>. This field might not be used. To change the | |
| 55 | + * <code>Border</code> used by this renderer directly set it using | |
| 56 | + * the <code>setBorder</code> method. | |
| 57 | + */ | |
| 58 | + protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1); | |
| 59 | + private final static Border SAFE_NO_FOCUS_BORDER = new EmptyBorder(1, 1, 1, 1); | |
| 60 | + | |
| 61 | + public BasicComboBoxRenderer() { | |
| 62 | + super(); | |
| 63 | + setOpaque(true); | |
| 64 | + setBorder(getNoFocusBorder()); | |
| 65 | + } | |
| 66 | + | |
| 67 | + private static Border getNoFocusBorder() { | |
| 68 | + if (System.getSecurityManager() != null) { | |
| 69 | + return SAFE_NO_FOCUS_BORDER; | |
| 70 | + } else { | |
| 71 | + return noFocusBorder; | |
| 72 | + } | |
| 73 | + } | |
| 74 | + | |
| 75 | + public Dimension getPreferredSize() { | |
| 76 | + Dimension size; | |
| 77 | + | |
| 78 | + if ((this.getText() == null) || (this.getText().equals( "" ))) { | |
| 79 | + setText( " " ); | |
| 80 | + size = super.getPreferredSize(); | |
| 81 | + setText( "" ); | |
| 82 | + } | |
| 83 | + else { | |
| 84 | + size = super.getPreferredSize(); | |
| 85 | + } | |
| 86 | + | |
| 87 | + return size; | |
| 88 | + } | |
| 89 | + | |
| 90 | + public Component getListCellRendererComponent( | |
| 91 | + JList list, | |
| 92 | + Object value, | |
| 93 | + int index, | |
| 94 | + boolean isSelected, | |
| 95 | + boolean cellHasFocus) | |
| 96 | + { | |
| 97 | + | |
| 98 | + /**if (isSelected) { | |
| 99 | + setBackground(UIManager.getColor("ComboBox.selectionBackground")); | |
| 100 | + setForeground(UIManager.getColor("ComboBox.selectionForeground")); | |
| 101 | + } else { | |
| 102 | + setBackground(UIManager.getColor("ComboBox.background")); | |
| 103 | + setForeground(UIManager.getColor("ComboBox.foreground")); | |
| 104 | + }**/ | |
| 105 | + | |
| 106 | + if (isSelected) { | |
| 107 | + setBackground(list.getSelectionBackground()); | |
| 108 | + setForeground(list.getSelectionForeground()); | |
| 109 | + } | |
| 110 | + else { | |
| 111 | + setBackground(list.getBackground()); | |
| 112 | + setForeground(list.getForeground()); | |
| 113 | + } | |
| 114 | + | |
| 115 | + setFont(list.getFont()); | |
| 116 | + | |
| 117 | + if (value instanceof Icon) { | |
| 118 | + setIcon((Icon)value); | |
| 119 | + } | |
| 120 | + else { | |
| 121 | + setText((value == null) ? "" : value.toString()); | |
| 122 | + } | |
| 123 | + return this; | |
| 124 | + } | |
| 125 | + | |
| 126 | + | |
| 127 | + /** | |
| 128 | + * A subclass of BasicComboBoxRenderer that implements UIResource. | |
| 129 | + * BasicComboBoxRenderer doesn't implement UIResource | |
| 130 | + * directly so that applications can safely override the | |
| 131 | + * cellRenderer property with BasicListCellRenderer subclasses. | |
| 132 | + * <p> | |
| 133 | + * <strong>Warning:</strong> | |
| 134 | + * Serialized objects of this class will not be compatible with | |
| 135 | + * future Swing releases. The current serialization support is | |
| 136 | + * appropriate for short term storage or RMI between applications running | |
| 137 | + * the same version of Swing. As of 1.4, support for long term storage | |
| 138 | + * of all JavaBeans<sup><font size="-2">TM</font></sup> | |
| 139 | + * has been added to the <code>java.beans</code> package. | |
| 140 | + * Please see {@link java.beans.XMLEncoder}. | |
| 141 | + */ | |
| 142 | + public static class UIResource extends BasicComboBoxRenderer implements javax.swing.plaf.UIResource { | |
| 143 | + } | |
| 144 | +} | |