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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package sun.jvm.hotspot.ui;


import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

Provides an editable text field with history.
/** Provides an editable text field with history. */
public class HistoryComboBox extends JComboBox<String> { static final int HISTORY_LENGTH = 15; public HistoryComboBox() { setEditable(true); addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { Object text = getSelectedItem(); if (text != null) { setText((String)text); } } }); } public String getText() { Object text = getSelectedItem(); if (text == null) { return ""; } return (String)text; } public void setText(String text) { removeItem(text); insertItemAt(text, 0); setSelectedItem(text); int length = getModel().getSize(); while (length > HISTORY_LENGTH) { removeItemAt(--length); } } }