import java.awt.*;
import java.applet.*;
import java.util.*;
import java.io.*;
import java.net.*;
import java.awt.event.*;

public class slidescroll extends Applet {
    
    String[] fontArray2 =   {"Dialog","Helvetica","TimesRoman","Courier", "SansSerif",
                                "Serif", "Monospaced", "DialogInput"};
    String[] SStyleArray =  {"PLAIN","ITALIC","BOLD", "BOLD+ITALIC", "ITALIC+BOLD"};
    int[] StyleMap =        {Font.PLAIN,Font.ITALIC,Font.BOLD, Font.BOLD|Font.ITALIC,
                                Font.BOLD|Font.ITALIC};
    String[] SColorArray =  {"black","blue","cyan","darkGray","gray","green","lightGray",
                                "magenta","orange","pink","red","white","yellow"};
    Color[] ColorMap =      {Color.black,Color.blue,Color.cyan,Color.darkGray,Color.gray,
                                Color.green,Color.lightGray,Color.magenta,Color.orange,
                                Color.pink,Color.red,Color.white,Color.yellow};
                                
    slidescroll_canvas nc;
    Color backgroundColor2;
    int borderPixel = 3;
    Color borderColor;
    boolean borderRaised = false;
    String temp;
    int z;
    Color backgroundColor;
    Panel p;
    boolean start_called = false;
    
    
    /**
    *   This method is called once by the browser to initialize the applet.
    */   
    public void init() {
     
        setLayout(null);
          
        backgroundColor = getColor("backgroundColor");
        if(backgroundColor == null)
            backgroundColor = new Color(0, 0,153);
          
        
        borderPixel = getNumber("borderPixel");
        if(borderPixel < 0) borderPixel = 3;  
         
        nc = new slidescroll_canvas(this, borderPixel, borderPixel, getBounds().width-(borderPixel*2),
                                        getBounds().height-(borderPixel*2));
    
        add(nc);
       
        borderRaised = setBoolean("borderRaised");      
    
        backgroundColor2 = getColor("backgroundColor2");
        if(backgroundColor2 == null)
            backgroundColor2 = new Color(0,0,153);
            
        borderColor = getColor("borderColor");
        if(borderColor == null)
            borderColor = new Color(255,102,0);    
 
        setBackground(backgroundColor);
        
      
}



    /**
    *   This method is called after by the browser after init() is called.
    */   
    public void start() {
      
         if(start_called)
               nc.init(this, borderPixel, borderPixel, getBounds().width-(borderPixel*2), getBounds().height-(borderPixel*2));
           
         nc.setUpTree();
         
         start_called = true;
    }
   
         
    /**
    *   This method overrides the default update() method. The default update() always clears the screen.
    */   
    public void update(Graphics g) {
        
         paint(g);
        
    }
 
    /**
    *   This method will paint the boarder around the applet.
    */   
    public void paint(Graphics g) {
    
        g.setColor(borderColor);

        for (int j = 0; j < borderPixel; j++)
            g.draw3DRect(j, j, getBounds().width  - j * 2 - 1,
                getBounds().height - j * 2 - 1, borderRaised); 
   
  }    
 
  
    
    /**
    *   This method will accept a string, and return the accociated int.
    */   
    int getNumber(String parm) {

        int num = 0;

        temp = getParameter(parm);

        if (temp == null) {

            return -1;
        }

        try {num = Integer.valueOf(temp).intValue();}

        catch (NumberFormatException e) {

            return -2;
        }

        return num;

   }

    
    /**
    *   This method will read the param tag, and convert "yes" or "no" to a boolean value.
    */   
      boolean setBoolean(String pass) {

        String StringTemp = getParameter(pass);
        if (StringTemp == null)
            return true;

        z = StringTemp.toUpperCase().compareTo("YES");

        if (z == 0)
            return true;
        else
            return false;


      }

    /**
    *   This method will read the param tag and convert either the name or a color or a RGB value to a Color object. 
    */   
    Color getColor(String parm) {

        int red = 0;
        int green = 0;
        int blue = 0;

        String sRed = "";
        String sGreen = "";
        String sBlue = "";

            temp = getParameter(parm);

            if (temp == null )
                return null;

           red = temp.indexOf(",");

           if(red > 0 ) {

                sRed = temp.substring(0, red);

                green = temp.indexOf(",", red+1);

                if(green < 0 )
                   return null;

                sGreen =  temp.substring(red+1, green);

                sBlue =  temp.substring(green+1, temp.length());

                try {red = Integer.valueOf(sRed).intValue();}

                catch (NumberFormatException e) {
                return null;
                }

                try {green = Integer.valueOf(sGreen).intValue();}

                catch (NumberFormatException e) {
                return null;
                }

                try {blue = Integer.valueOf(sBlue).intValue();}

                catch (NumberFormatException e) {
                return null;
                }

                if( red > 255 || green > 255 || blue > 255) {
                   return null;

                }

                return new Color(red, green, blue);

           }

            for (int i = 0; i < SColorArray.length;  i++) {
               int z = temp.toUpperCase().compareTo(SColorArray[i].toUpperCase());

               if (z == 0)
                   return ColorMap[i];

            }

            return null;

       }

    /**
    *   This method will read the param tag and convert the font style to an int. 
    */   
    int getStyle(String parm) {

            temp = getParameter(parm);

            if (temp == null ){
                return -1;
                        }

            for (int i = 0; i < SStyleArray.length;  i++){
                int z = temp.toUpperCase().compareTo(SStyleArray[i].toUpperCase());

                if (z == 0)
                    return i;
            }

            return -1;

       }


    /**
    *   This method will read a param tag, and convert the Font to an int.
    */   
    int getFont(String parm) {

        temp = getParameter(parm);

        if (temp == null)
            return -1;
       
        for (int i = 0; i < fontArray2.length;  i++) {
            int z = temp.toUpperCase().compareTo(fontArray2[i].toUpperCase());

            if (z == 0)
                return i;
        }


        return -2;

   }
    
     public void keyReleased(KeyEvent event) {}
     public void keyTyped(KeyEvent event) {}
  
   
}// end of class