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

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