src/main/java/jp/sourceforge/stigmata/ui/swing/PopupButton.java

   1 package jp.sourceforge.stigmata.ui.swing;
   2
   3 /*
   4  * $Id$
   5  */
   6
   7 import java.awt.GridBagConstraints;
   8 import java.awt.GridBagLayout;
   9 import java.awt.Insets;
  10 import java.awt.Point;
  11 import java.awt.event.ActionEvent;
  12 import java.awt.event.ActionListener;
  13
  14 import javax.swing.JButton;
  15 import javax.swing.JMenuItem;
  16 import javax.swing.JPanel;
  17 import javax.swing.JPopupMenu;
  18 import javax.swing.plaf.metal.MetalComboBoxIcon;
  19
  20 /**
  21  * Popup button.
  22  *
  23  * @author tamada
  24  */
  25 public class PopupButton extends JPanel{
  26     private static final long serialVersionUID = -4428839967597028837L;
  27
  28     private JButton button;
  29     private JPopupMenu popup;
  30     private JButton arrowButton;
  31
  32     public PopupButton(JButton initButton){
  33         button = initButton;
  34         arrowButton = new JButton(new MetalComboBoxIcon());
  35         popup = new JPopupMenu();
  36
  37         arrowButton.addActionListener(new ActionListener(){
  38             @Override
  39             public void actionPerformed(ActionEvent e){
  40                 Point p = button.getLocation();
  41                 popup.show(PopupButton.this, p.x, button.getHeight());
  42             }
  43         });
  44         Insets insets = arrowButton.getMargin();
  45         arrowButton.setMargin(new Insets(insets.top, 1, insets.bottom, 1));
  46
  47         setLayout(new GridBagLayout());
  48         GridBagConstraints gbc = new GridBagConstraints();
  49         gbc.weightx = 0d; gbc.weighty = 0d;
  50         gbc.gridx = 0;    gbc.gridy = 0;
  51         gbc.fill = GridBagConstraints.BOTH;
  52
  53         add(button, gbc);
  54
  55         gbc.weightx = 0d;
  56         gbc.gridx = 1;
  57         add(arrowButton, gbc);
  58
  59         updateUI();
  60     }
  61
  62     @Override
  63     public void setEnabled(boolean enabled){
  64         super.setEnabled(enabled);
  65         button.setEnabled(enabled);
  66         arrowButton.setEnabled(enabled);
  67     }
  68
  69     public JButton getButton(){
  70         return button;
  71     }
  72
  73     public JMenuItem addMenuItem(JMenuItem menuItem){
  74         return popup.add(menuItem);
  75     }
  76 }