/**

 *  Apple Worldwide Developer Technical Support

 *

 *  "Magic Oracle" sample demonstrating AppleScript for Java.

 *  User can communicate with this application via AppleScript to

 *  send a question string and receive an answer string in response

 *  

 *  tell Application "Magic Oracle"

 *       ask Oracle of Frame "oracleFrame" parameters{ "question?" }

 *  end tell

 *

 *  by Michael Hopkins, Apple Developer Technical Support

 *

 *  File:   MainFrame.java

 *

 *  Copyright ©1999 Apple Computer, Inc.

 *  All rights reserved.

 *

 *  4/99    v. 1.0  Shipped as 'Magic Oracle AppleScript for Java' sample.

 *

 *  You may incorporate this sample code into your applications without

 *  restriction, though the sample code has been provided "AS IS" and the

 *  responsibility for its operation is 100% yours.  However, what you are

 *  not permitted to do is to redistribute the source as "Apple Sample

 *  Code" after having made changes. If you're going to re-distribute the

 *  source, we require that you make it clear in the source that the code

 *  was descended from Apple Sample Code, but that you've made changes.

**/

import BufferedImage;

import BufferedDrawer;

import java.awt.*;

import java.awt.event.*;

/**

 * A class by the Magic Oracle application that is a simple extension of the 

 * java.awt.Frame class. It contains all the elements necessary to act as the

 * main window of an application.

 * @version 1.0, April 9, 1999

 * @author Michael Hopkins, Worldwide Developer Technical Support, Apple Computer Inc.

 **/

public class MainFrame extends Frame

{

    /**

     * Default constructor

     **/

    public MainFrame()

    {

        setLayout(new BorderLayout(0,0));

        setVisible(false);

        setSize(477,418);

        setBackground(new Color(12632256));

        panel1 = new java.awt.Panel();

        panel1.setLayout(null);

        panel1.setBounds(0,388,477,30);

        add("South", panel1);

        button1 = new java.awt.Button();

        button1.setLabel("Ask the Oracle");

        button1.setBounds(212,3,100,23);

        panel1.add(button1);

        textField1 = new java.awt.TextField();

        textField1.setText("What is thy Bidding?");

        textField1.setBounds(18,3,183,26);

        textField1.setForeground(new Color(0));

        textField1.setBackground(new Color(16777215));

        panel1.add(textField1);

        bufferedImage1 = new BufferedImage();

        bufferedImage1.setBounds(0,0,477,388);

        bufferedImage1.setBackground(new Color(16777215));

        add("Center", bufferedImage1);

        setTitle("Ask the Oracle");

        this.setName("oracleFrame");    /**

                                         * by calling setName(), we can refer to our frame as

                                         * Frame "oracleFrame" in AppleScript instead of Frame 1

                                         */

        SymWindow aSymWindow = new SymWindow();

        this.addWindowListener(aSymWindow);

        SymMouse aSymMouse = new SymMouse();

        bufferedImage1.addMouseListener(aSymMouse);

        SymMouseMotion aSymMouseMotion = new SymMouseMotion();

        bufferedImage1.addMouseMotionListener(aSymMouseMotion);

        SymAction lSymAction = new SymAction();

        button1.addActionListener(lSymAction);

        textField1.addActionListener(lSymAction);

        userInit();

    }

    static public void main(String args[])

    {

        (new MainFrame()).setVisible(true);

    }

/**

 * UserInit 

 * Loads neccessary images and prepares offscreen graphics areas

 **/

    protected void userInit()

    {

        String imagePath = "images/Ball.jpg";

        ballimage = Util.loadImage(imagePath, this);

        if (ballimage == null)

        {

            System.err.println("Could not load image \"" + imagePath + "\"");

        }

        else

        {

            bufferedImage1.setImage(ballimage);

        }

        String image = "image";

        String jpg   = ".jpg";

        images = new Image[24];

        for ( int i = 0; i < 24; i++ )

        {

            imagePath = "images/" + image + (i+1) + jpg;

            images[i] = Util.loadImage( imagePath, this);

            if (images[i] == null)

            {

                System.err.println("Could not load image \"" + imagePath + "\"");

            }   

        }

    }

    /**

     * Shows or hides the component depending on the boolean flag b.

     * @param b  if true, show the component; otherwise, hide the component.

     * @see java.awt.Component#isVisible

     */

    public void setVisible(boolean b)

    {

        if(b)

        {

            setLocation(50, 50);

        }   

        super.setVisible(b);

    }

    java.awt.Panel panel1;

    java.awt.Button button1;

    java.awt.TextField textField1;

    BufferedImage bufferedImage1;

    protected Image ballimage;

    protected Image images[];

    protected boolean dragging = false;

    protected Point startPoint;

    protected Fortune oracle = new Fortune();

    /**

     * Handle window events

     */

    class SymWindow extends java.awt.event.WindowAdapter

    {

        public void windowClosing(java.awt.event.WindowEvent event)

        {

            Object object = event.getSource();

            if (object == MainFrame.this)

                MainFrame_WindowClosing(event);

        }

    }

    void MainFrame_WindowClosing(java.awt.event.WindowEvent event)

    {

        setVisible(false);  // hide the Frame

        dispose();          // free the system resources

        System.exit(0);     // close the application

    }

    /**

     * Inner class for handling mouse events

     */

    class SymMouse extends java.awt.event.MouseAdapter

    {

       /**

        * Handle mousePressed events

        */

        public void mousePressed(java.awt.event.MouseEvent event)

        {

            Object object = event.getSource();

            if (object == bufferedImage1)

            {

                bufferedImage1_MousePressed(event);

                dragging = false;

            }

        }

       /**

        * Handle mouseReleased events

        */

        public void mouseReleased(java.awt.event.MouseEvent event)

        {

            Object object = event.getSource();

            if (object == bufferedImage1)

                bufferedImage1_MouseReleased(event);

            if ( dragging == true ) // user must drag the ball. Clicking on it will not invoke it

            {

                askMystic( textField1.getText() );

            }

        }

    }

    /**

     * Handle mouseDragged events

     */

    class SymMouseMotion extends java.awt.event.MouseMotionAdapter

    {

        public void mouseDragged(java.awt.event.MouseEvent event)

        {

            Object object = event.getSource();

            if (object == bufferedImage1)

            {

                bufferedImage1_MouseDragged(event);

                dragging = true;

            }

        }

    }

    /**

     * Factored routine exposed to AppleScript that performs the oracle "magic"

     * @param question Query to ask of the oracle

     * @return reponse from oracle

     */

    public String askMystic( String question )

    {

        if ( !(textField1.getText().equals( question )))

            textField1.setText( question );

        String s = "";

        if ( question.equals( "" )) // if no question is asked, return a canned response

        {

            animateTriangle( false );

            s = "Please ask a question";

        }   

        else                        // if there is a question, clear textfield and generate response

        {

            animateTriangle( );

            s = oracle.getResponse();

            try

            {

                Thread.sleep(150);  // delay in between frames of animation

            }

            catch (InterruptedException exc) { }

            textField1.setText("");

        }

        return s;

    }

    /**

     * Perform animation of floating dodecahedron 

     * @param input true if non-empty input from textfield

     */

    void animateTriangle( boolean input )

    {

        Graphics g = getGraphics();

        Point origin = new Point(bufferedImage1.getImageLocation()); 

        origin.x += 114;        // upper left corner for drawing repsonse images

        origin.y += 112;

        if ( g != null )

        {

            for ( int i = 0; i < 3; i++ )

            {

                try

                {

                    Thread.sleep(150);  // delay in between frames of animation

                }

                catch (InterruptedException exc) { }

                g.drawImage( images[i], origin.x, origin.y, this ); // draw 3 common animation frames

            }

            try

            {

                Thread.sleep(150);

            }

            catch (InterruptedException exc) { }

            if ( input )

                g.drawImage( images[oracle.generateResponseNum() + 4], origin.x, origin.y, this ); // draw response frame

            else

                g.drawImage( images[3], origin.x, origin.y, this ); // draw "Ask A ?"

        }

    }

    /**

     * Perform animation of floating dodecahedron 

     * This routine simulates calling this routine with a default value of true

     */

    void animateTriangle( )

    {

        animateTriangle( true );

    }

    /**

     * Handles mouse pressed events in the buffered image

     */

    void bufferedImage1_MousePressed(java.awt.event.MouseEvent event)

    {

        Point eLoc = event.getPoint();                  // cache click location

        Point iLoc = bufferedImage1.getImageLocation(); // cache image location

        Dimension iSize = bufferedImage1.getImageSize();

        Rectangle imageRect = new Rectangle(iLoc.x, iLoc.y, iSize.width, iSize.height);

        if (imageRect.contains(eLoc))                   // determine if click was within image

        {

            startPoint = new Point(eLoc.x - iLoc.x, eLoc.y - iLoc.y);

        }

        else

            startPoint = null;

    }

    /**

     * Handles mouse dragged events in the buffered image

     */

    void bufferedImage1_MouseDragged(java.awt.event.MouseEvent event)

    {

        if (startPoint != null)     // gets the location of the image, offsets it and draws

        {

            Point eLoc = event.getPoint();

            eLoc.translate(-startPoint.x, -startPoint.y);

            bufferedImage1.setImageLocation(eLoc);

            bufferedImage1.paint(getGraphics());

        }

    }

    /**

     * resets the startPoint of the buffered image when the mouse button is released

     */

    void bufferedImage1_MouseReleased(java.awt.event.MouseEvent event)

    {

        startPoint = null;

    }

    /**

     * Respond to button clicks and enter key pressed in text field

     */

    class SymAction implements java.awt.event.ActionListener

    {

        public void actionPerformed(java.awt.event.ActionEvent event)

        {

            Object object = event.getSource();

            if (object == button1)

                button1_ActionPerformed(event);

            else if (object == textField1)

                textField1_EnterHit(event);

        }

    }

    /**

     * Respond to "Ask Mystic" button pressed event

     */

    void button1_ActionPerformed(java.awt.event.ActionEvent event)

    {

        askMystic( textField1.getText( ));

    }

    /**

     * Respond enter key pressed in textfield

     */

    void textField1_EnterHit(java.awt.event.ActionEvent event)

    {

        simulateClick(button1);

    }

    /**

     * A function to simulate a click on the target button.

     * This will make the button draw as if it had been pressed and

     * released, and the button will fire an Action event as if

     * the button were pressed.

     * For use with the Apple MRJ 2.1 EA3 and later.

     */

    static protected void simulateClick(Button target)

    {

        if (target != null)

        {

            KeyEvent keyEvent = new KeyEvent(target, KeyEvent.KEY_PRESSED, 

                                           System.currentTimeMillis(), 0, KeyEvent.VK_ENTER, 

                                           (char)KeyEvent.VK_ENTER);

            target.dispatchEvent(keyEvent);

        }

    }

}