package v2ch11.optionDialog;

import module java.base;
import module java.desktop;

/**
 * A frame that contains settings for selecting various option dialogs.
 */
public class OptionDialogFrame extends JFrame {
    private ButtonPanel typePanel;
    private ButtonPanel messagePanel;
    private ButtonPanel messageTypePanel;
    private ButtonPanel optionTypePanel;
    private ButtonPanel optionsPanel;
    private ButtonPanel inputPanel;
    private String messageString = "Message";
    private Icon messageIcon = new ImageIcon("images/blue-ball.gif");
    private Object messageObject = new Date();
    private Component messageComponent = new SampleComponent();

    public OptionDialogFrame() {
        var gridPanel = new JPanel();
        gridPanel.setLayout(new GridLayout(2, 3));

        typePanel = new ButtonPanel("Type", "Message", "Confirm", "Option", "Input");
        messageTypePanel = new ButtonPanel("Message Type", "ERROR_MESSAGE",
                "INFORMATION_MESSAGE", "WARNING_MESSAGE", "QUESTION_MESSAGE", "PLAIN_MESSAGE");
        messagePanel = new ButtonPanel("Message", "String", "Icon", "Component", "Other",
                "Object[]");
        optionTypePanel = new ButtonPanel("Confirm", "DEFAULT_OPTION", "YES_NO_OPTION",
                "YES_NO_CANCEL_OPTION", "OK_CANCEL_OPTION");
        optionsPanel = new ButtonPanel("Option", "String[]", "Icon[]", "Object[]");
        inputPanel = new ButtonPanel("Input", "Text field", "Combo box");

        gridPanel.add(typePanel);
        gridPanel.add(messageTypePanel);
        gridPanel.add(messagePanel);
        gridPanel.add(optionTypePanel);
        gridPanel.add(optionsPanel);
        gridPanel.add(inputPanel);

        // add a panel with a Show button

        var showPanel = new JPanel();
        var showButton = new JButton("Show");
        showButton.addActionListener(new ShowAction());
        showPanel.add(showButton);

        add(gridPanel, BorderLayout.CENTER);
        add(showPanel, BorderLayout.SOUTH);
        pack();
    }

    /**
     * Gets the currently selected message.
     * @return a string, icon, component, or object array, depending on the Message panel
     *         selection
     */
    public Object getMessage() {
        String s = messagePanel.getSelection();
        if (s.equals("String"))
            return messageString;
        else if (s.equals("Icon"))
            return messageIcon;
        else if (s.equals("Component"))
            return messageComponent;
        else if (s.equals("Object[]"))
            return new Object[] { messageString, messageIcon, messageComponent, messageObject };
        else if (s.equals("Other"))
            return messageObject;
        else
            return null;
    }

    /**
     * Gets the currently selected options.
     * @return an array of strings, icons, or objects, depending on the Option panel selection
     */
    public Object[] getOptions() {
        String s = optionsPanel.getSelection();
        if (s.equals("String[]"))
            return new String[] { "Yellow", "Blue", "Red" };
        else if (s.equals("Icon[]"))
            return new Icon[] { new ImageIcon("images/yellow-ball.gif"),
                    new ImageIcon("images/blue-ball.gif"),
                    new ImageIcon("images/red-ball.gif") };
        else if (s.equals("Object[]"))
            return new Object[] { messageString, messageIcon, messageComponent, messageObject };
        else
            return null;
    }

    /**
     * Gets the selected message or option type
     * @param panel the Message Type or Confirm panel
     * @return the selected XXX_MESSAGE or XXX_OPTION constant from the JOptionPane class
     */
    public int getType(ButtonPanel panel) {
        String s = panel.getSelection();
        try {
            return JOptionPane.class.getField(s).getInt(null);
        }
        catch (Exception e) {
            return -1;
        }
    }

    /**
     * The action listener for the Show button shows a Confirm, Input, Message, or Option dialog
     * depending on the Type panel selection.
     */
    private class ShowAction implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            if (typePanel.getSelection().equals("Confirm"))
                JOptionPane.showConfirmDialog(OptionDialogFrame.this, getMessage(), "Title",
                        getType(optionTypePanel), getType(messageTypePanel));
            else if (typePanel.getSelection().equals("Input")) {
                if (inputPanel.getSelection().equals("Text field"))
                    JOptionPane.showInputDialog(OptionDialogFrame.this, getMessage(), "Title",
                            getType(messageTypePanel));
                else
                    JOptionPane.showInputDialog(OptionDialogFrame.this, getMessage(), "Title",
                            getType(messageTypePanel), null,
                            new String[] { "Yellow", "Blue", "Red" }, "Blue");
            }
            else if (typePanel.getSelection().equals("Message"))
                JOptionPane.showMessageDialog(OptionDialogFrame.this, getMessage(), "Title",
                        getType(messageTypePanel));
            else if (typePanel.getSelection().equals("Option"))
                JOptionPane.showOptionDialog(OptionDialogFrame.this, getMessage(), "Title",
                        getType(optionTypePanel), getType(messageTypePanel), null, getOptions(),
                        getOptions()[0]);
        }
    }
}

/**
 * A component with a painted surface
 */

class SampleComponent extends JComponent {
    public void paintComponent(Graphics g) {
        var g2 = (Graphics2D) g;
        var rect = new Rectangle2D.Double(0, 0, getWidth() - 1, getHeight() - 1);
        g2.setPaint(Color.YELLOW);
        g2.fill(rect);
        g2.setPaint(Color.BLUE);
        g2.draw(rect);
    }

    public Dimension getPreferredSize() {
        return new Dimension(10, 10);
    }
}
