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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 | } | ||