import java.awt.*;
import java.applet.Applet;

public class TextInput extends Applet {
    TextField textField;
    TextArea textArea;
    Button bt;
    Parser parse;
    FontMetrics fm;
    int taWidth, remainingSpace, halfRemSpace;
 
    boolean crack, stepsUp, stepsDown;
    int leftin, uc, lc, space, bspace, tab, stepsCount;

    public void init() {


        textField = new TextField(20);
        textArea = new TextArea(5, 20);
        textArea.setEditable(false);
	  bt = new Button(" ...  > zap < ... ");

	  Color nblue = new Color(0, 55, 255);
	  bt.setBackground(nblue);
	  bt.setForeground(nblue);

        textArea.setBackground(Color.white);
       
        //Add Components to the Applet. 
        GridBagLayout gridBag = new GridBagLayout();
        setLayout(gridBag);
        GridBagConstraints c = new GridBagConstraints();
        c.gridwidth = GridBagConstraints.REMAINDER;

        c.fill = GridBagConstraints.HORIZONTAL;
        gridBag.setConstraints(textField, c);
        add(textField);

	  c.fill = GridBagConstraints.HORIZONTAL;
        gridBag.setConstraints(bt, c);
        add(bt);

        c.fill = GridBagConstraints.BOTH;
        c.weightx = 1.0;
        c.weighty = 1.0;
        gridBag.setConstraints(textArea, c);
        add(textArea);
        validate();

        // width of applet!
        taWidth = this.size().width - 50;
        remainingSpace = taWidth;
	  halfRemSpace = taWidth/2;

        //init the parser
	  parse = new Parser();
	  parse.start(this);
        parse.addExtraChars();	 

  	  fm  = textArea.getFontMetrics(textArea.getFont());

        leftin = 0;
        space = 0;
	  uc = 0;
	  lc = 0;
        bspace = 0;
        tab = 0;
 	  stepsCount = 0;

	  crack = false;
	  stepsUp = false;
	  stepsDown = false;
    }

    public boolean action(Event evt, Object arg) {
	  Object target = evt.target;
         
        if (target == bt) {
	     //reset stuff
           textArea.setText(new String(""));
	     remainingSpace = taWidth;
           leftin = 0;
           space = 0;
	     uc = 0;
	     lc = 0;
 	     bspace = 0;
 	     tab = 0;
	     crack = false;
           stepsUp = false;
	     stepsDown = false;
           stepsCount = 0;

           String text = textField.getText();           

	     int i = 0;

	     while(text.length() > i) {
              char c[] = new char[1];
              c[0] = text.charAt(i);
	        String key = new String(c);
		  key = key.toLowerCase();
              String obj = parse.p2Parse(key);
		  wrap(obj);
              textField.selectAll();
              i = i+1;
           }
        }
        return true;
    }
    private void wrap(String obj) {
        
        if(obj != null) {

	      obj = preProc(obj);
            int thisWord = fm.stringWidth(obj);              
	
            if(thisWord > remainingSpace){
                textArea.appendText("\n");
                remainingSpace = taWidth;
            }

		pad();        
            textArea.appendText(obj);
            remainingSpace = remainingSpace - thisWord;
        }
    
     }

     private String preProc(String obj) {

            if(uc > 0) {
	          obj = obj.toUpperCase();
	          uc = uc - 1;
             }

             if(lc > 0) {
                 obj = obj.toLowerCase();
                 lc = lc - 1;
             }

	       if(space > 0) {
                 int t = obj.length();
                 char foo[] = new char[(space + 1)*t];
		     char bar[] = new char[t];
                 bar = obj.toCharArray();
                 int it = 0;
                 while(it < t){
			   int temp2 = it*(space+1); 
   			   foo[temp2] = bar[it];
			   int temp3 = 0;
                     while(temp3 < space) {
                         foo[temp2+temp3+1] = ' ';
                         temp3 = temp3 +1;
                     }

			   it = it + 1;
                 }
                 obj = new String(foo);
              }

              if(tab > 0) {
			int tabtemp = tab;
                  while(tabtemp > 0) {
		          obj = obj + "\t";
                      tabtemp = tabtemp - 1;
                  }
              }

              if(bspace > 0) {
			int tempbsp = bspace;
                  while(tempbsp > 0) {
		          obj = obj + " ";
                      tempbsp = tempbsp -1;
                  }
              }
		  
              if(crack == true) {
		      if((remainingSpace >= halfRemSpace) &&
                     ((remainingSpace - fm.stringWidth(obj)) <= halfRemSpace)) {
		          obj = obj + "     ";
                  }
              }
              return obj;
     }

     private void pad() {
	  if (remainingSpace == taWidth) {
		int foo = leftin + stepsCount;
	      String sp = new String(" ");

            while(foo > 0) {
                textArea.appendText(sp);
		    remainingSpace = remainingSpace - fm.stringWidth(sp);
                foo = foo -1;
            }
            if(stepsUp) 
		    stepsCount = (stepsCount + 1) % 100 ;

            if(stepsDown)
		    stepsCount = (stepsCount - 1) % 100;
		    
         }
     }


}