package Calculator;

public class ButtonHandler implements Runnable 
{
  private Thread spirit;
  private Calculator gui;
  private CalculatorState stateObj = new CalculatorState();
  private ButtonObj[] buttonObjs = new ButtonObj[Calculator.LAST];
  
  public ButtonHandler( Calculator realGUI ) 
  {

    this.gui = realGUI;
    CalcTextGUI textGUI = new CalcTextGUI( realGUI );
    
    for ( int i = 0; i < 10; i++ ) 
    {
      this.buttonObjs[i] = new NumButtonObj( i, textGUI, this.stateObj );
    }

    this.buttonObjs[Calculator.DOT]    = new DotButtonObj( this.buttonObjs[0],
                                                           textGUI, 
						           this.stateObj );
    ButtonObj equalButton = this.buttonObjs[Calculator.EQUALS] 
                          = new EqualButtonObj( textGUI, this.stateObj );


    this.buttonObjs[Calculator.OP_DIV] = new OpButtonObj( Calculator.OP_DIV, 
							  equalButton,
							  textGUI, 
							  this.stateObj ); 
    this.buttonObjs[Calculator.OP_MUL] = new OpButtonObj( Calculator.OP_MUL, 
							  equalButton,
							  textGUI, 
							  this.stateObj ); 
    this.buttonObjs[Calculator.OP_ADD] = new OpButtonObj( Calculator.OP_ADD, 
							  equalButton,
							  textGUI, 
							  this.stateObj ); 
    this.buttonObjs[Calculator.OP_SUB] = new OpButtonObj( Calculator.OP_SUB, 
							  equalButton,
							  textGUI, 
							  this.stateObj );
    this.buttonObjs[Calculator.CLEAR] = new ClearButtonObj( textGUI,
							    this.stateObj );
    
    this.spirit = new Thread ( this );
    this.spirit.start();

  }


  public void run () 
  {
      while (true) 
      {
	  int buttonID = this.gui.getButton();

	  this.buttonObjs[buttonID].handleButton();

      }
  }

}