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1: /* BasicComboBoxRenderer.java -- 2: Copyright (C) 2004, 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package javax.swing.plaf.basic; 40: 41: import java.awt.Component; 42: import java.awt.Dimension; 43: import java.io.Serializable; 44: 45: import javax.swing.Icon; 46: import javax.swing.JComboBox; 47: import javax.swing.JLabel; 48: import javax.swing.JList; 49: import javax.swing.ListCellRenderer; 50: import javax.swing.border.Border; 51: import javax.swing.border.EmptyBorder; 52: 53: /** 54: * A renderer for a {@link JComboBox}. 55: * 56: * @author Olga Rodimina 57: */ 58: public class BasicComboBoxRenderer 59: extends JLabel 60: implements ListCellRenderer, Serializable 61: { 62: /** 63: * A shared border instance for all renderers. 64: */ 65: protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1); 66: 67: /** 68: * Creates a new <code>BasicComboBoxRenderer</code> object. 69: */ 70: public BasicComboBoxRenderer() 71: { 72: setOpaque(true); 73: setBorder(noFocusBorder); 74: } 75: 76: /** 77: * Returns preferredSize of the renderer 78: * 79: * @return preferredSize of the renderer 80: */ 81: public Dimension getPreferredSize() 82: { 83: return super.getPreferredSize(); 84: } 85: 86: /** 87: * Returns a component that has been configured to display the given 88: * <code>value</code>. 89: * 90: * @param list List of items for which to the background and foreground 91: * colors 92: * @param value object that should be rendered in the cell 93: * @param index index of the cell in the list of items. 94: * @param isSelected draw cell highlighted if isSelected is true 95: * @param cellHasFocus draw focus rectangle around cell if the cell has 96: * focus 97: * 98: * @return Component that will be used to draw the desired cell. 99: */ 100: public Component getListCellRendererComponent(JList list, Object value, 101: int index, boolean isSelected, 102: boolean cellHasFocus) 103: { 104: if (isSelected) 105: { 106: setBackground(list.getSelectionBackground()); 107: setForeground(list.getSelectionForeground()); 108: } 109: else 110: { 111: setBackground(list.getBackground()); 112: setForeground(list.getForeground()); 113: } 114: setFont(list.getFont()); 115: 116: if (value instanceof Icon) 117: setIcon((Icon) value); 118: else 119: setText(value == null ? "" : value.toString()); 120: 121: return this; 122: } 123: 124: /** 125: * A subclass of {@link BasicComboBoxRenderer} that implements the 126: * {@link javax.swing.plaf.UIResource} interface. 127: */ 128: public static class UIResource extends BasicComboBoxRenderer 129: implements javax.swing.plaf.UIResource 130: { 131: /** 132: * Creates a new <code>UIResource</code> object. 133: */ 134: public UIResource() 135: { 136: // Nothing to do here. 137: } 138: } 139: }
GNU Classpath (0.91) |