53 lines
1.8 KiB
Java
53 lines
1.8 KiB
Java
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Display ToolTip in JComboBox
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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import javax.swing.plaf.basic.*;
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public class ToolTipComboBox extends JFrame {
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String[] items = {"jw" ,"ja" ,"la" };
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String[] tooltips = {"Javanese ","Japanese ","Latin "};
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public ToolTipComboBox() {
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super("ToolTip ComboBox Example");
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JComboBox combo = new JComboBox(items);
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combo.setRenderer(new MyComboBoxRenderer());
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getContentPane().setLayout(new FlowLayout());
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getContentPane().add(combo);
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}
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class MyComboBoxRenderer extends BasicComboBoxRenderer {
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public Component getListCellRendererComponent( JList list,
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Object value, int index, boolean isSelected, boolean cellHasFocus) {
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if (isSelected) {
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setBackground(list.getSelectionBackground());
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setForeground(list.getSelectionForeground());
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if (-1 < index) {
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list.setToolTipText(tooltips[index]);
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}
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} else {
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setBackground(list.getBackground());
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setForeground(list.getForeground());
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}
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setFont(list.getFont());
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setText((value == null) ? "" : value.toString());
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return this;
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}
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}
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public static void main (String args[]) {
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ToolTipComboBox frame = new ToolTipComboBox();
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frame.addWindowListener(new WindowAdapter() {
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public void windowClosing(WindowEvent e) {
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System.exit(0);
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}
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});
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frame.setSize(200, 140);
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frame.setVisible(true);
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}
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}
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