/**
 *  Copyright (C) 2002-2017   The FreeCol Team
 *
 *  This file is part of FreeCol.
 *
 *  FreeCol is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  FreeCol is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with FreeCol.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.freecol.client.gui.menu;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.GraphicsEnvironment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

import net.sf.freecol.client.FreeColClient;
import net.sf.freecol.client.gui.FreeColFrame;


/**
 * Test the menus.
 */
public class FreeColMenuTest implements ActionListener, ItemListener {
    JTextArea output;
    JScrollPane scrollPane;
    final String newline = "\n";

    public JMenuBar createMenuBar() {
        JMenuBar menuBar = null;

        FreeColClient client = new FreeColClient(null, null);
        client.startClient(null, null, true, true, null, null);

        //Create the menu bar.
        menuBar = new InGameMenuBar(client, null);
        client.updateActions();
        ((FreeColMenuBar)menuBar).update();

        return menuBar;
    }

    public Container createContentPane() {
        //Create the content-pane-to-be.
        JPanel contentPane = new JPanel(new BorderLayout());
        contentPane.setOpaque(true);

        //Create a scrolled text area.
        output = new JTextArea(5, 30);
        output.setEditable(false);
        scrollPane = new JScrollPane(output);

        //Add the text area to the content pane.
        contentPane.add(scrollPane, BorderLayout.CENTER);

        return contentPane;
    }

    @Override
    public void actionPerformed(ActionEvent ae) {
        JMenuItem source = (JMenuItem)ae.getSource();
        String s = "Action event detected."
                   + newline
                   + "    Event source: " + source.getText()
                   + " (an instance of " + getClassName(source) + ")";
        output.append(s + newline);
        output.setCaretPosition(output.getDocument().getLength());
    }

    @Override
    public void itemStateChanged(ItemEvent e) {
        JMenuItem source = (JMenuItem)(e.getSource());
        String s = "Item event detected."
                   + newline
                   + "    Event source: " + source.getText()
                   + " (an instance of " + getClassName(source) + ")"
                   + newline
                   + "    New state: "
                   + ((e.getStateChange() == ItemEvent.SELECTED) ?
                     "selected":"unselected");
        output.append(s + newline);
        output.setCaretPosition(output.getDocument().getLength());
    }

    // Returns just the class name -- no package info.
    protected String getClassName(Object o) {
        String classString = o.getClass().getName();
        int dotIndex = classString.lastIndexOf('.');
        return classString.substring(dotIndex+1);
    }

    /** Returns an ImageIcon, or null if the path was invalid.
     *
     * @param path String
     * @return {@code ImageIcon}
     */
    protected static ImageIcon createImageIcon(String path) {
        java.net.URL imgURL = FreeColMenuTest.class.getResource(path);
        if (imgURL != null) {
            return new ImageIcon(imgURL);
        } else {
            System.err.println("Couldn't find file: " + path);
            return null;
        }
    }

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        //Create and set up the window.
        //JFrame frame = new JFrame("MenuDemo");
        FreeColClient client = new FreeColClient(null, null);
        client.startClient(null, null, true, true, null, null);
        FreeColFrame frame = new FreeColFrame(client,
            GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice(),
            null, null, true, null);
        frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

        //Create and set up the content pane.
        FreeColMenuTest demo = new FreeColMenuTest();
        frame.setJMenuBar(demo.createMenuBar());
        frame.setContentPane(demo.createContentPane());

        //Display the window.
        frame.setPreferredSize(new Dimension(450, 260));
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(() -> { createAndShowGUI(); });
    }
}