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™
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 @SuppressWarnings("serial") // Same-version serialization only
51 public class BasicComboBoxRenderer extends JLabel
52 implements ListCellRenderer, Serializable {
53
54 /**
55 * An empty <code>Border</code>. This field might not be used. To change the
56 * <code>Border</code> used by this renderer directly set it using
57 * the <code>setBorder</code> method.
58 */
59 protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
60 private final static Border SAFE_NO_FOCUS_BORDER = new EmptyBorder(1, 1, 1, 1);
61
62 public BasicComboBoxRenderer() {
63 super();
64 setOpaque(true);
65 setBorder(getNoFocusBorder());
66 }
67
68 private static Border getNoFocusBorder() {
69 if (System.getSecurityManager() != null) {
70 return SAFE_NO_FOCUS_BORDER;
71 } else {
72 return noFocusBorder;
73 }
74 }
75
76 public Dimension getPreferredSize() {
77 Dimension size;
78
79 if ((this.getText() == null) || (this.getText().equals( "" ))) {
80 setText( " " );
81 size = super.getPreferredSize();
82 setText( "" );
83 }
84 else {
85 size = super.getPreferredSize();
86 }
87
88 return size;
89 }
90
91 public Component getListCellRendererComponent(
92 JList list,
93 Object value,
94 int index,
95 boolean isSelected,
96 boolean cellHasFocus)
97 {
98
99 /**if (isSelected) {
100 setBackground(UIManager.getColor("ComboBox.selectionBackground"));
101 setForeground(UIManager.getColor("ComboBox.selectionForeground"));
102 } else {
103 setBackground(UIManager.getColor("ComboBox.background"));
104 setForeground(UIManager.getColor("ComboBox.foreground"));
105 }**/
106
107 if (isSelected) {
108 setBackground(list.getSelectionBackground());
109 setForeground(list.getSelectionForeground());
110 }
111 else {
112 setBackground(list.getBackground());
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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™
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 @SuppressWarnings("serial") // Same-version serialization only
51 public class BasicComboBoxRenderer extends JLabel
52 implements ListCellRenderer<Object>, Serializable {
53
54 /**
55 * An empty <code>Border</code>. This field might not be used. To change the
56 * <code>Border</code> used by this renderer directly set it using
57 * the <code>setBorder</code> method.
58 */
59 protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
60 private final static Border SAFE_NO_FOCUS_BORDER = new EmptyBorder(1, 1, 1, 1);
61
62 public BasicComboBoxRenderer() {
63 super();
64 setOpaque(true);
65 setBorder(getNoFocusBorder());
66 }
67
68 private static Border getNoFocusBorder() {
69 if (System.getSecurityManager() != null) {
70 return SAFE_NO_FOCUS_BORDER;
71 } else {
72 return noFocusBorder;
73 }
74 }
75
76 public Dimension getPreferredSize() {
77 Dimension size;
78
79 if ((this.getText() == null) || (this.getText().equals( "" ))) {
80 setText( " " );
81 size = super.getPreferredSize();
82 setText( "" );
83 }
84 else {
85 size = super.getPreferredSize();
86 }
87
88 return size;
89 }
90
91 public Component getListCellRendererComponent(
92 JList<? extends Object> list,
93 Object value,
94 int index,
95 boolean isSelected,
96 boolean cellHasFocus)
97 {
98
99 /**if (isSelected) {
100 setBackground(UIManager.getColor("ComboBox.selectionBackground"));
101 setForeground(UIManager.getColor("ComboBox.selectionForeground"));
102 } else {
103 setBackground(UIManager.getColor("ComboBox.background"));
104 setForeground(UIManager.getColor("ComboBox.foreground"));
105 }**/
106
107 if (isSelected) {
108 setBackground(list.getSelectionBackground());
109 setForeground(list.getSelectionForeground());
110 }
111 else {
112 setBackground(list.getBackground());
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