/*
 * @(#)QuestionEngine.java      0.0.1 99/07/08
 *
 * Copyright (c) 1999 by Grant Olds.  All rights reserved.
 */
package exercise.engine;

import java.io.*;
import java.awt.*;
import java.net.*;
import java.util.*;
import javax.swing.*;

/**
 * <tt>QuestionEngine</tt> is the base class that parses in a file created
 * by the <tt>QuestionWriter</tt> application and creates a new question
 * module according to the type a file that is read in.  The question
 * modules that can be created are Multiple Choice module, Number module,
 * and Text module.
 * <p>
 * WLW (07/08/99): I removed unnecessary fields and methods, added
 * <tt>readImage()</tt>, and cleaned up the source code.
 *
 * @version     0.0.1 07/08/99
 * @author      Grant Olds
 * @author      Willie Wheeler
 */
public class QuestionEngine extends JApplet {
	
  /**
   * The <tt>init()</tt> method reads in the specified file name from the
   * html tag, tries to open the file, then checks to see what type of
   * module the file wants to create.  Depending on the module it wants to
   * create, it calls the correct file parser to write file data to the
   * proper content file.  Finally the correct module creator is called to
   * produce a module. 
   */
  public void init() {
    URL source;

    String file = "test.txt";
    StringTokenizer st;
    String read = new String();
    StringBuffer type = new StringBuffer();
    String checkType = new String();

    setSize(432, 600);

//    getContentPane().setBackground ( new Color ( 255, 204, 102 ) );
    getContentPane().setLayout (new BorderLayout());
	
    // Try to open the file.
    try {
      source = new URL ( getCodeBase(), file );

      // Read in the file.
      BufferedReader in = new BufferedReader(
	  new InputStreamReader(source.openStream()));

      String tmp;
      while ((tmp = in.readLine()) != null) {
	read += tmp;
	read += " ";
      }
    } catch(IOException ioe) { System.out.println("Error: " + ioe); }
      
    QuestionModuleWrapper moduleWrapper = new QuestionModuleWrapper(
      read,
      readImage("hintDown"),
      readImage("hintOff"),
      readImage("hintRoll"),
      readImage("hintUp"),
      readImage("submitDown"),
      readImage("submitOff"),
      readImage("submitRoll"),
      readImage("submitUp"),
      readImage("attention").getImage(),
      readImage("correct").getImage(),
      readImage("incorrect").getImage()
    );
    
    getContentPane().add (moduleWrapper, BorderLayout.CENTER);
  }

  /**
   * Convenience method to read a gif from disk.
   *
   * @return    image with the given filename, minus the '.gif' extension.
   */
  private ImageIcon readImage(String filename) {
    return new ImageIcon(getImage(getCodeBase(),
      "resources/question_engine/images/" + filename + ".gif")
    );
  }
}