/* * @(#)BasicComboBoxRenderer.java 1.22 05/10/31 * * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package javax.swing.plaf.basic; import javax.swing.*; import javax.swing.event.*; import javax.swing.border.*; import java.awt.*; import java.io.Serializable; /** * ComboBox renderer *
* Warning:
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is
* appropriate for short term storage or RMI between applications running
* the same version of Swing. As of 1.4, support for long term storage
* of all JavaBeansTM
* has been added to the java.beans
package.
* Please see {@link java.beans.XMLEncoder}.
*
* @version 1.22 10/31/05
* @author Arnaud Weber
*/
public class BasicComboBoxRenderer extends JLabel
implements ListCellRenderer, Serializable {
protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
private final static Border SAFE_NO_FOCUS_BORDER = new EmptyBorder(1, 1, 1, 1);
public BasicComboBoxRenderer() {
super();
setOpaque(true);
setBorder(getNoFocusBorder());
}
private static Border getNoFocusBorder() {
if (System.getSecurityManager() != null) {
return SAFE_NO_FOCUS_BORDER;
} else {
return noFocusBorder;
}
}
public Dimension getPreferredSize() {
Dimension size;
if ((this.getText() == null) || (this.getText().equals( "" ))) {
setText( " " );
size = super.getPreferredSize();
setText( "" );
}
else {
size = super.getPreferredSize();
}
return size;
}
public Component getListCellRendererComponent(
JList list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus)
{
/**if (isSelected) {
setBackground(UIManager.getColor("ComboBox.selectionBackground"));
setForeground(UIManager.getColor("ComboBox.selectionForeground"));
} else {
setBackground(UIManager.getColor("ComboBox.background"));
setForeground(UIManager.getColor("ComboBox.foreground"));
}**/
if (isSelected) {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
}
else {
setBackground(list.getBackground());
setForeground(list.getForeground());
}
setFont(list.getFont());
if (value instanceof Icon) {
setIcon((Icon)value);
}
else {
setText((value == null) ? "" : value.toString());
}
return this;
}
/**
* A subclass of BasicComboBoxRenderer that implements UIResource.
* BasicComboBoxRenderer doesn't implement UIResource
* directly so that applications can safely override the
* cellRenderer property with BasicListCellRenderer subclasses.
*
* Warning:
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is
* appropriate for short term storage or RMI between applications running
* the same version of Swing. As of 1.4, support for long term storage
* of all JavaBeansTM
* has been added to the java.beans
package.
* Please see {@link java.beans.XMLEncoder}.
*/
public static class UIResource extends BasicComboBoxRenderer implements javax.swing.plaf.UIResource {
}
}