josx.platform.rcx
Class Button

java.lang.Object
  josx.platform.rcx.Button

All Implemented Interfaces:

ListenerCaller

public class Button

extends Object

implements ListenerCaller

Abstraction for an RCX button. Example:

    Button.RUN.waitForPressAndRelease();
    Sound.playTone (1000, 1);
 

Field Summary

static Button[]	BUTTONS Array containing VIEW, PRGM and RUN, in that order.
static Button	PRGM The Prgm button.
static Button	RUN The Run button.
static Button	VIEW The View button.

Method Summary

void	addButtonListener(ButtonListener aListener) Adds a listener of button events.
void	callListeners()
int	getId() Return the ID of the button.
boolean	isPressed()
static int	readButtons() Low-level API that reads status of buttons.
void	waitForPressAndRelease() Wait until the button is released.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait

Field Detail

RUN

public static final Button RUN

The Run button.

VIEW

public static final Button VIEW

The View button.

PRGM

public static final Button PRGM

The Prgm button.

BUTTONS

public static final Button[] BUTTONS

Array containing VIEW, PRGM and RUN, in that order.

Method Detail

getId

public final int getId()

Return the ID of the button. One of 1, 2 or 4.

isPressed

public final boolean isPressed()

Returns:

true if button is pressed, false otherwise.

waitForPressAndRelease

public final void waitForPressAndRelease()
                                  throws InterruptedException

Wait until the button is released.

Throws:

InterruptedException

addButtonListener

public void addButtonListener(ButtonListener aListener)

Adds a listener of button events. Each button can serve at most 4 listeners.

readButtons

public static int readButtons()

Low-level API that reads status of buttons.

Returns:

An integer with possibly some bits set: 0x02 (view button pressed) 0x04 (prgm button pressed), 0x01 (run button pressed). If all buttons are released, this method returns 0.

callListeners

public void callListeners()

Specified by:

callListeners in interface ListenerCaller