Example usage for javax.swing JComboBox addPopupMenuListener

Introduction

In this page you can find the example usage for javax.swing JComboBox addPopupMenuListener.

Prototype

public void addPopupMenuListener(PopupMenuListener l) 

Source Link

Document

Adds a PopupMenu listener which will listen to notification messages from the popup portion of the combo box.

Usage

From source file:Main.java

public static void main(String[] args) {
    JComboBox c = new JComboBox();
    c.addPopupMenuListener(new PopupMenuListener() {

        @Override//from   w  ww .jav a2  s  .  c  o  m
        public void popupMenuCanceled(PopupMenuEvent e) {
            System.out.println(e.getSource());
        }

        @Override
        public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
            System.out.println(e.getSource());
        }

        @Override
        public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
            System.out.println(e.getSource());
        }
    });
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().setLayout(new FlowLayout());
    f.getContentPane().add(c);
    f.pack();
    f.setVisible(true);
}

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From source file:PopupTest.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Popup Menu Listener");
    Container contentPane = frame.getContentPane();

    final String flavors[] = { "Item 1", "Item 2", "Item 3" };

    PopupMenuListener listener = new PopupMenuListener() {
        boolean initialized = false;

        public void popupMenuCanceled(PopupMenuEvent e) {
        }//from   www.  j ava2  s. c  o m

        public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
        }

        public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
            if (!initialized) {
                JComboBox combo = (JComboBox) e.getSource();
                ComboBoxModel model = new DefaultComboBoxModel(flavors);
                combo.setModel(model);
                initialized = true;
            }
        }
    };

    JComboBox jc = new JComboBox();
    jc.addPopupMenuListener(listener);
    jc.setMaximumRowCount(4);
    jc.setEditable(true);
    contentPane.add(jc, BorderLayout.NORTH);

    frame.pack();
    frame.show();
}

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From source file:Main.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Popup Menu Listener");
    Container contentPane = frame.getContentPane();

    final String flavors[] = { "Item 1", "Item 2", "Item 3" };

    PopupMenuListener listener = new PopupMenuListener() {
        boolean initialized = false;

        public void popupMenuCanceled(PopupMenuEvent e) {
        }// w  w w . j  a v  a 2s  . c  o m

        public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
        }

        public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
            if (!initialized) {
                JComboBox combo = (JComboBox) e.getSource();
                ComboBoxModel model = new DefaultComboBoxModel(flavors);
                combo.setModel(model);
                initialized = true;
            }
        }
    };

    JComboBox jc = new JComboBox();
    jc.addPopupMenuListener(listener);
    jc.setMaximumRowCount(4);
    jc.setEditable(true);
    contentPane.add(jc, BorderLayout.NORTH);

    frame.pack();
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    String[] items = { "item1", "item2" };
    JComboBox cb = new JComboBox(items);
    cb.setEditable(true);//from   ww  w .  jav a2s. c  o  m

    MyPopupMenuListener actionListener = new MyPopupMenuListener();
    cb.addPopupMenuListener(actionListener);
}

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From source file:Main.java

public Main() {
    String[] items = { "Item1", "Item2", "Item3", "Item4", "Item5" };
    JComboBox<String> comboBox = new JComboBox<>(items);
    add(comboBox);//from  w w w . j a  v  a 2 s .  c o m

    comboBox.addPopupMenuListener(new PopupMenuListener() {
        public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
            JComboBox<String> comboBox = (JComboBox<String>) e.getSource();
            BasicComboPopup popup = (BasicComboPopup) comboBox.getAccessibleContext().getAccessibleChild(0);
            JList list = popup.getList();
            list.setSelectedIndex(2);
        }

        public void popupMenuCanceled(PopupMenuEvent e) {
        }

        public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
        }

    });
}

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