?? button.java
字號:
// Button.java
// Sends ButtonEvents to ButtonListeners when accessed
package com.deitel.jhtp5.elevator.model;
// Deitel packages
import com.deitel.jhtp5.elevator.event.*;
public class Button implements ElevatorMoveListener {
// ButtonListener
private ButtonListener buttonListener = null;
// represent whether Button is pressed
private boolean pressed = false;
// set listener
public void setButtonListener( ButtonListener listener )
{
buttonListener = listener;
}
// press Button and send ButtonEvent
public void pressButton( Location location )
{
pressed = true;
buttonListener.buttonPressed(
new ButtonEvent( this, location ) );
}
// reset Button and send ButtonEvent
public void resetButton( Location location )
{
pressed = false;
buttonListener.buttonReset(
new ButtonEvent( this, location ) );
}
// return whether button is pressed
public boolean isButtonPressed()
{
return pressed;
}
// invoked when Elevator has departed
public void elevatorDeparted( ElevatorMoveEvent moveEvent ) {}
// invoked when Elevator has arrived
public void elevatorArrived( ElevatorMoveEvent moveEvent )
{
resetButton( moveEvent.getLocation() );
}
}
/**************************************************************************
* (C) Copyright 1992-2003 by Deitel & Associates, Inc. and *
* Prentice Hall. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/
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