/**
 * LayoutExample.java
 * @author Jeff Ondich, 27 October 2010
 *
 * This program, combined with ButtonPanel and TricolorPanel, provides
 * a small demonstration of:
 *
 * - Layout using the GridBagLayout manager class. The content pane of
 *   the frame window is split into to unequal-sized columns using a
 *   very simple setup, as GridBagLayout setups go.
 * - Layout by putting panels in panels (see how TricolorPanel separates
 *   itself into three subpanels).
 * - Connection between a button in one panel and an action in another.
 */ 

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class LayoutExample
{
    public static void main(String[] args)
    {
        JFrame frame = new JFrame("Layout example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel contentPane = new JPanel();
        contentPane.setOpaque(true);
        contentPane.setLayout(new GridBagLayout());
        frame.setContentPane(contentPane);

        ButtonPanel buttonPanel = new ButtonPanel(Color.BLUE);
        GridBagConstraints buttonPanelConstraints = new GridBagConstraints();
        buttonPanelConstraints.fill = GridBagConstraints.BOTH;
        buttonPanelConstraints.gridx = 0;
        buttonPanelConstraints.gridy = 0;
        buttonPanelConstraints.gridwidth = 1;
        buttonPanelConstraints.weightx = 1.0;
        buttonPanelConstraints.weighty = 1.0;
        contentPane.add(buttonPanel, buttonPanelConstraints);

        TricolorPanel tricolorPanel = new TricolorPanel(Color.GREEN, Color.GRAY, Color.YELLOW);
        GridBagConstraints tricolorPanelConstraints = new GridBagConstraints();
        buttonPanel.addButtonListener(tricolorPanel);
        tricolorPanelConstraints.fill = GridBagConstraints.BOTH;
        tricolorPanelConstraints.gridx = 1;
        tricolorPanelConstraints.gridy = 0;
        tricolorPanelConstraints.gridwidth = 2;
        tricolorPanelConstraints.weightx = 5.0;
        tricolorPanelConstraints.weighty = 1.0;
        contentPane.add(tricolorPanel, tricolorPanelConstraints);

        frame.setSize(500, 300);
        frame.setVisible(true);
    }
}