source: josm/src/org/openstreetmap/josm/gui/dialogs/ToggleDialog.java@ 199

package org.openstreetmap.josm.gui.dialogs;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.AbstractButton;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.actions.JosmAction;
import org.openstreetmap.josm.actions.HelpAction.Helpful;
import org.openstreetmap.josm.tools.GBC;
import org.openstreetmap.josm.tools.ImageProvider;

/**
 * This class is a toggle dialog that can be turned on and off. It is attached
 * to a ButtonModel.
 *
 * @author imi
 */
public class ToggleDialog extends JPanel implements Helpful {

        public final class ToggleDialogAction extends JosmAction {
                public final String prefname;
                public AbstractButton button;

                private ToggleDialogAction(String name, String iconName, String tooltip, int shortCut, int modifier, String prefname) {
                        super(name, iconName, tooltip, shortCut, modifier, false);
                        this.prefname = prefname;
                }

                public void actionPerformed(ActionEvent e) {
                        if (e != null && !(e.getSource() instanceof AbstractButton))
                                button.setSelected(!button.isSelected());
                        setVisible(button.isSelected());
                        Main.pref.put(prefname+".visible", button.isSelected());
                }
        }

        /**
         * The action to toggle this dialog.
         */
        public ToggleDialogAction action;
        public final String prefName;

        public JPanel parent;
        private final JPanel titleBar = new JPanel(new GridBagLayout());

        public ToggleDialog(final String name, String iconName, String tooltip, int shortCut, int preferredHeight) {
                super(new BorderLayout());
                this.prefName = iconName;
                setPreferredSize(new Dimension(330,preferredHeight));
                action = new ToggleDialogAction(name, "dialogs/"+iconName, tooltip, shortCut, KeyEvent.ALT_MASK, iconName);
                String helpId = "Dialog/"+getClass().getName().substring(getClass().getName().lastIndexOf('.')+1);
                action.putValue("help", helpId.substring(0, helpId.length()-6));
                setLayout(new BorderLayout());

                titleBar.add(new JLabel(name), GBC.std());
                titleBar.add(Box.createHorizontalGlue(),GBC.std().fill(GBC.HORIZONTAL));

                JButton sticky = new JButton(ImageProvider.get("misc", "sticky"));
                sticky.setBorder(BorderFactory.createEmptyBorder());
                final ActionListener stickyActionListener = new ActionListener(){
                        public void actionPerformed(ActionEvent e) {
                                final JFrame f = new JFrame(name);
                                try {f.setAlwaysOnTop(true);} catch (SecurityException e1) {}
                                parent.remove(ToggleDialog.this);
                                f.getContentPane().add(ToggleDialog.this);
                                f.addWindowListener(new WindowAdapter(){
                                        @Override public void windowClosing(WindowEvent e) {
                                                titleBar.setVisible(true);
                                                f.getContentPane().removeAll();
                                                parent.add(ToggleDialog.this);
                                                f.dispose();

                                                // doLayout() - workaround
                                                setVisible(false);
                                                setVisible(true);

                                                Main.pref.put(action.prefname+".docked", true);
                                        }
                                });
                                f.addComponentListener(new ComponentAdapter(){
                                        @Override public void componentMoved(ComponentEvent e) {
                                                Main.pref.put(action.prefname+".bounds", f.getX()+","+f.getY()+","+f.getWidth()+","+f.getHeight());
                    }
                                });
                                String bounds = Main.pref.get(action.prefname+".bounds",null);
                                if (bounds != null) {
                                        String[] b = bounds.split(",");
                                        f.setBounds(Integer.parseInt(b[0]),Integer.parseInt(b[1]),Integer.parseInt(b[2]),Integer.parseInt(b[3]));
                                } else
                                        f.pack();
                                Main.pref.put(action.prefname+".docked", false);
                                f.setVisible(true);
                                titleBar.setVisible(false);

                                // doLayout() - workaround
                                parent.setVisible(false);
                                parent.setVisible(true);
                        }
                };
                sticky.addActionListener(stickyActionListener);

                titleBar.add(sticky);
                add(titleBar, BorderLayout.NORTH);

                setVisible(false);
                setBorder(BorderFactory.createEtchedBorder());

                if (!Main.pref.getBoolean(action.prefname+".docked", true)) {
                        EventQueue.invokeLater(new Runnable(){
                                public void run() {
                                        stickyActionListener.actionPerformed(null);
                }
                        });
                }
        }

        public String helpTopic() {
                String help = getClass().getName();
                help = help.substring(help.lastIndexOf('.')+1, help.length()-6);
                return "Dialog/"+help;
        }
}