//
//  ControlPanel.java
//  Anneal
//
//  Created by sw on Thu Sep 12 2002.
//  Copyright (c) 2001 __MyCompanyName__. All rights reserved.
//


package net.tiac.home.sw.anneal;

import java.lang.Integer;
import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;


class ControlPanel extends Panel {
	private Applet myApplet;
	private Board myBoard;
	
	private Label initLabel;
	private Choice initChoice;
	private InitPattern [] initValues;
	private InitPattern currentInitChoice;
	
	private Label speedLabel;
	private Choice speedChoice;
	private CheapVector speedValueV;
	private int speedValues [];
	
	private Button resetButton;
	private Button reverseButton;
	private Button pauseButton;
	private Button playButton;
	private TextField odometer;
	private int mileage;
	
	private int direction;

    // State variables for the pause button:
	private boolean run;
	private boolean pressedAfterPause;

	// Constructor:
	public ControlPanel( Applet myApplet ) {  // Set up everything needed to lay out.
		this.myApplet = myApplet;
		initLabel = new Label( "Init Pattern:",
									Label.RIGHT );

		// ===== THE INIT PATTERN CHOICE =====
		this.initChoice = new Choice( ) {
			public boolean action( Event evt, Object what ) {
				if( currentInitChoice != 
						initValues[ initChoice.getSelectedIndex() ] )  {
					sendInitPattern();
					sendInit( true );
					}
				return( true );
				}				
			};
		initValues = new InitPatternPlethora( ).patterns;
		// The name strings affect the width given to the control:
		for( int i = 0;  i < initValues.length;  i++ )  {
			initChoice.addItem( initValues[i].name() );  // initValues[i] set above.
			}
		this.speedLabel = new Label("  Speed:",
									Label.RIGHT );

		// ===== THE SPEED CHOICE =====
		this.speedChoice = new Choice( ) {
			public boolean action( Event evt, Object what ) {
				sendSpeedDirection( );
				return( true );
				}				
			};
				
		// These strings affect the width given to the control:
		speedValueV = new CheapVector( new Integer [1], 0 );
		speedChoice.addItem( "manual step" );		speedValueV.add( new Integer( 0 ) );		
		speedChoice.addItem( "1 step/sec" );		speedValueV.add( new Integer( 1 ) );
		speedChoice.addItem( "10 step/sec" );		speedValueV.add( new Integer( 10 ) );
		speedChoice.addItem( "100 step/sec" );		speedValueV.add( new Integer( 100 ) );
		speedChoice.addItem( "1000 step/sec" );		speedValueV.add( new Integer( 1000 ) );
		// speedChoice.addItem( "10000 step/sec" );	speedValueV.add( new Integer( 10000 ) );
		speedValues = speedValueV.toIntArrayClear();
		speedChoice.select( "1000 step/sec" );
		
		// All the following button descriptions are
		// anonymous classes, a Java 1.1 thing.

		// ===== THE RESET BUTTON =====		
		this.resetButton = new Button( "|<<" )  {
			public boolean action( Event evt, Object what ) {
				setRun( false );
				sendInit( true );
				return( true );
				}				
			};
		this.resetButton.setBackground( Color.white );
		
		// ===== THE REVERSE BUTTON =====		
		this.reverseButton = new Button( "<" )  {
			public boolean action( Event evt, Object what ) {
				play(  -1 );
				return( true );
				}				
			};
		this.reverseButton.setBackground( Color.white );
		
		// ===== THE PAUSE BUTTON =====
		// Pauses or un-pauses when you "click," 
		// i.e. press and release without dragging.
		this.pauseButton = new Button( "||" )  {
			public boolean action( Event evt, Object what ) {
				setRun( !run );
				return( true );
				}				
			};
		this.pauseButton.setBackground( Color.white );
	
		// ===== THE PLAY BUTTON =====		
		this.playButton = new Button( ">" ) {
			public boolean action( Event evt, Object what ) {
				play( +1 );
				return( true );
				}				
			};
		this.playButton.setBackground( Color.white );
			
		                                  this.odometer = new TextField( 10 );
			                               this.odometer.setEditable( false );
		this.odometer.setBackground( Color.white );

			
		this.setLayout( new BorderLayout() );
		
		Panel topRow = new Panel( );
		topRow.setLayout( new FlowLayout( FlowLayout.LEFT, 3, 2 ) );
		
		Panel buttons = new Panel( );
		buttons.setLayout( new FlowLayout( FlowLayout.LEFT, 3, 2 ) );
		
		Panel bottomRow = new Panel( );
		bottomRow.setLayout( new BorderLayout( ) );
		
		this.add( "North", topRow );
		this.add( "South", bottomRow );
		
		topRow.add( initLabel ); topRow.add( initChoice );
		                            topRow.add( speedLabel ); topRow.add( speedChoice );
		buttons.add( resetButton );
		   buttons.add( reverseButton );
		      buttons.add( pauseButton );
		         buttons.add( playButton );
		bottomRow.add( "West", buttons );             bottomRow.add( "East", odometer );
		}
		
	public synchronized void setRun( boolean run )  {
		this.run = run;
		this.pressedAfterPause = false;
		this.sendSpeedDirection();
		}
		
	public int getSpeed( )  {
		return( speedValues[ speedChoice.getSelectedIndex() ] );
		}
		
	public void sendSpeedDirection( )  {
		myBoard.setSpeedDirection( getSpeed(), this.run? direction : 0 );
		}
		
	public synchronized void play( int direction )  {
		this.direction = direction;		
		this.setRun( true );
		if( getSpeed() == 0 )  {
			myBoard.step( );
			this.setRun( false );
			}
		}
	
	public void init( Board myBoard )  {
		this.myBoard = myBoard;
		
				
							
		this.setRun( false );
        this.setMileage( 0 );

		sendInitPattern( );
        sendInit( true );
		}

	public void sendInitPattern( )  {	
		currentInitChoice = initValues[ initChoice.getSelectedIndex() ];
		myBoard.setInitPattern( currentInitChoice );
		}

	public void sendInit( boolean force )  {		
		if( !force  && ( myBoard.supposedToBeGoing( ) 
							|| this.getMileage() != 0 ) ) {
			// myApplet.showStatus( "Press \"|<<\" to start over." );
			} else {
			// myApplet.showStatus( "" );
			setRun( false );
			myBoard.signalStopWaitForResponse( );
			myBoard.init( 1, 1, this );
			}
		}
		
	public void start( ) {  // Applet calls this when it's started by browser.
		myBoard.start();
		}
		
	public void stop( )  {  // Applet calls this when it's stopped by browser.
		myBoard.stop();
		}
		
	public int getMileage( )  {
		return( this.mileage );
		}
		
	public void setMileage( int mileage )  {
		this.mileage = mileage;
		this.odometer.setText( " " + mileage );
		}
	}