equip.city
Class Ana

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--equip.city.Ana

All Implemented Interfaces:

javax.accessibility.Accessible, java.awt.image.ImageObserver, java.awt.MenuContainer, java.lang.Runnable, java.io.Serializable

Direct Known Subclasses:

Dub

public class Ana

extends java.applet.Applet

implements java.lang.Runnable

applet delivering content for VR visitors (ana)

this class communicates with EQUIP City proxy, sending initial $U $D $E messages and then blocking on read waiting for (optional) $R and $S messages, updating content on receiving $R.

See Also:

CityProxy, City protocol, EQUIP, Serialized Form

Inner classes inherited from class java.applet.Applet

java.applet.Applet.AccessibleApplet

Inner classes inherited from class java.awt.Panel

java.awt.Panel.AccessibleAWTPanel

Inner classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent

Field Summary

protected java.lang.String	contentFrame frame receiving content update
protected static boolean	DEBUG flag to enable trace output
protected java.lang.String	device visitor device
protected java.lang.String	equip visit dataspace
protected java.lang.String	host host we came from (where proxy is)
protected java.io.BufferedReader	in stream for reading from proxy
protected long	initTime time of inititialisation as base for trace output
protected java.lang.String	listFrame frame receiving list update
protected java.text.MessageFormat	mfu format for sending user data (name and timestamp) to proxy
protected java.lang.String	name visitor name
protected java.io.PrintWriter	out stream for writing to proxy
protected int	port proxy port
protected java.net.Socket	socket socket connected to proxy
protected java.lang.Thread	updater thread for network comms
protected java.util.Vector	visitors visitor data received from proxy for display

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Ana()

Method Summary

void	destroy() stops and disables network comms thread
protected java.lang.String	elapsedTime() returns formatted string (000.000) of seconds since connection
protected void	handleRefresh() responds to refresh message by displaying changed content
void	init() initialises proxy connection and sends initial messages ($U $D $E)
void	run() reads messages (optional $R with $S) from proxy (blocks on read)
protected void	sendUser() sends user name and timestamp to proxy
void	start() enables and starts network comms thread
void	stop() stops and disables network comms thread

Methods inherited from class java.applet.Applet

getAccessibleContext, 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, getListeners, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paint, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setFont, setLayout, update, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, 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, getGraphicsConfiguration, 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, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, 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

updater

protected java.lang.Thread updater

thread for network comms

port

protected int port

proxy port

host

protected java.lang.String host

host we came from (where proxy is)

socket

protected java.net.Socket socket

socket connected to proxy

in

protected java.io.BufferedReader in

stream for reading from proxy

out

protected java.io.PrintWriter out

stream for writing to proxy

name

protected java.lang.String name

visitor name

device

protected java.lang.String device

visitor device

equip

protected java.lang.String equip

visit dataspace

contentFrame

protected java.lang.String contentFrame

frame receiving content update

listFrame

protected java.lang.String listFrame

frame receiving list update

visitors

protected java.util.Vector visitors

visitor data received from proxy for display

DEBUG

protected static boolean DEBUG

flag to enable trace output

initTime

protected long initTime

time of inititialisation as base for trace output

mfu

protected java.text.MessageFormat mfu

format for sending user data (name and timestamp) to proxy

Constructor Detail

Ana

public Ana()

Method Detail

init

public void init()

initialises proxy connection and sends initial messages ($U $D $E)

Overrides:

init in class java.applet.Applet

start

public void start()

enables and starts network comms thread

Overrides:

start in class java.applet.Applet

stop

public void stop()

stops and disables network comms thread

Overrides:

stop in class java.applet.Applet

destroy

public void destroy()

stops and disables network comms thread

Overrides:

destroy in class java.applet.Applet

elapsedTime

protected java.lang.String elapsedTime()

returns formatted string (000.000) of seconds since connection

sendUser

protected void sendUser()

sends user name and timestamp to proxy

handleRefresh

protected void handleRefresh()

responds to refresh message by displaying changed content

run

public void run()

reads messages (optional $R with $S) from proxy (blocks on read)

Specified by:

run in interface java.lang.Runnable