/*
*Class TextWriter
*
*Created by Martin Carlsson
*
*Internetprogrammering 1 - Course
**/
import java.awt.*;
import javax.swing.*;


/**TextWriter, which is a thread class by implementing the the Runnable interface, is used for 
*creating dynamic text in the GUI(MagnificentBall). 
*The dynamic effect is accomplished by sending characters 
*to the GUI, one character at a time with a certain frequency.
*@see MagnificentBall
*@see java.lang.Thread
*/
public class TextWriter implements Runnable {
    
    private Thread t;
    private String titleText = new String("MagnificentBall--not connected..yet");
    private String hostText = new String("Enter hostname");	
    private MagnificentBall gui;
    private int frequency = 80;	
    private boolean looping = true;	
        
    
    public TextWriter(MagnificentBall gui) {
        this.gui = gui;
        t = new Thread(this);
        t.start();
    }
    
    
    /**
    *Sends a substring by a certain frequency to the GUI
    */
    public void run() {
        
        boolean doAddress = true;
        boolean doTitle = true;
        int i = 0;
        
        while(looping) {
            
            try {
                Thread.sleep(frequency);
            }
            catch(InterruptedException e) {
            }
            
            try {
                if(doAddress)
                    gui.setRemoteAdrFieldText( hostText.valueOf(hostText.charAt(i)));
            }		
            catch(StringIndexOutOfBoundsException e) {
                doAddress = false; // stops writing to the address field
            }
            
            
            try {
                if(doTitle)
                    gui.setTitle(gui.getTitle() + titleText.valueOf(titleText.charAt(i)));
            }		
            catch(StringIndexOutOfBoundsException e) {
                doTitle = false; // stops writing to the title bar
            }	
            i++; 
            
            if(!doTitle && !doAddress) // when both host address and title text is written the looping stops
                looping = false;
        }
            
    }// End run
    
} // End class TextWriter