com.ibm.tspaces.examples.whiteboard
Class Whiteboard

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--com.ibm.tspaces.examples.whiteboard.Whiteboard

public class Whiteboard

extends java.applet.Applet

This class implements a 'shared' whiteboard to be used with tuplespace. This may not be a great implementation of a whiteboard application, but it does demo how to use TupleSpace All of the Tuplespace related code is WhiteboardPanel.java

Author:

Matthias Eichstaedt, John Thomas

See Also:

Serialized Form

Field Summary

java.awt.Frame	appFrame
static boolean	application
protected static int	HEIGHT
protected static java.lang.String	host
protected static boolean	PaintOK
protected static int	port
protected static int	WIDTH

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Constructor Summary

Whiteboard()

Method Summary

void	destroy() destroy() is called when the applet is going to be permanently stoped
void	init() Initialization: This could be entered automatically when running as an applet or by being called from main() is being run from an application.
static void	main(java.lang.String[] args) Run the whiteboard as an application.
void	run() run: Is entered as as a result of a start thread It is not currently being used.
void	start() start() is called when it is time for the applet to start doing stuff.
void	stop() stop() is called when the applet is no longer visible so we no longer need to keep painting the screen, but we should still listen for events.

Methods inherited from class java.applet.Applet

getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus

Methods inherited from class java.awt.Panel

addNotify

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getInsets, getLayout, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paint, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setCursor, setFont, setLayout, update, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getLocation, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, isFocusTraversable, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setDropTarget, setEnabled, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

application

public static boolean application

host

protected static java.lang.String host

port

protected static int port

PaintOK

protected static boolean PaintOK

WIDTH

protected static final int WIDTH

HEIGHT

protected static final int HEIGHT

appFrame

public java.awt.Frame appFrame

Constructor Detail

Whiteboard

public Whiteboard()

Method Detail

init

public void init()

Initialization: This could be entered automatically when running as an applet or by being called from main() is being run from an application.

Overrides:

init in class java.applet.Applet

run

public void run()

run: Is entered as as a result of a start thread It is not currently being used.

start

public void start()

start() is called when it is time for the applet to start doing stuff. This could be called multiple times as the applet is stopped and started.

Overrides:

start in class java.applet.Applet

stop

public void stop()

stop() is called when the applet is no longer visible so we no longer need to keep painting the screen, but we should still listen for events. This could be called multiple times as the applet is stopped and started.

Overrides:

stop in class java.applet.Applet

destroy

public void destroy()

destroy() is called when the applet is going to be permanently stoped

Overrides:

destroy in class java.applet.Applet

main

public static void main(java.lang.String[] args)

Run the whiteboard as an application.

Parameters:

args - - command line arguments