cs101.util.semaphore
Class GraphicalSemaphore

java.lang.Object
  java.awt.Component
      java.awt.Container
          java.awt.Panel
              cs101.util.semaphore.GraphicalSemaphore

All Implemented Interfaces:

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

Direct Known Subclasses:

GBS, GCS

public abstract class GraphicalSemaphore

extends java.awt.Panel

cs101.util.GraphicalSemaphore is the abstract super class for both the GBS (Graphical Binary semaphore) and the GCS (Graphical Counting semaphore).
It provides a common interface for the two sub-classes: gs.request(), gs.release() as well as doing alot of the graphical grunt work.
Copyright 1996 Massachusetts Institute of Technology

Version:

$Id: GraphicalSemaphore.java,v 1.1.1.1 2002/06/05 21:56:32 root Exp $

Author:

Todd C. Parnell, tparnell@ai.mit.edu, Joshua R. Brown, reuben@ai.mit.edu

See Also:

GCS, GBS, Serialized Form

Nested Class Summary

Nested classes inherited from class java.awt.Panel

java.awt.Panel.AccessibleAWTPanel

Nested classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Nested classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

protected java.awt.Panel	display display panel for the semaphore
protected static int	InstanceCounter Number of instances created
protected java.awt.Label	label label for the semaphore
protected int	myNumber my number in the InstanceCount(er)

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

GraphicalSemaphore(java.lang.String label)
Creates some of the GUI objects needed by it's subclasses.

Method Summary

java.awt.Dimension	getMinimumSize() Determines the mininum size necessary for this component.
java.awt.Dimension	getPreferredSize() Determines the preferedSize necessary for this component.
abstract void	release() abstract - must be overidden in subclass
abstract void	request() abstract - must be overidden in subclass
protected void	setupGUI() This method should be Called by the subclass after it's part of the gui setup is complete.
protected abstract void	showStatus() abstract - must be overidden in subclass

Methods inherited from class java.awt.Panel

addNotify, getAccessibleContext

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getListeners, getMaximumSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFont, setLayout, transferFocusBackward, transferFocusDownCycle, update, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, 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, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

InstanceCounter

protected static int InstanceCounter

Number of instances created

myNumber

protected int myNumber

my number in the InstanceCount(er)

label

protected java.awt.Label label

label for the semaphore

display

protected java.awt.Panel display

display panel for the semaphore

Constructor Detail

GraphicalSemaphore

public GraphicalSemaphore(java.lang.String label)

Creates some of the GUI objects needed by it's subclasses. Creates a panel to display the semaphore in and a label with the text passed.

Parameters:

label - A string that will identify the semaphore in the display.

Method Detail

setupGUI

protected void setupGUI()

This method should be Called by the subclass after it's part of the gui setup is complete. It expects the the display Panel has been initialized by the subclss. It Adds the completed gui components to the panel.

showStatus

protected abstract void showStatus()

abstract - must be overidden in subclass

request

public abstract void request()

abstract - must be overidden in subclass

release

public abstract void release()

abstract - must be overidden in subclass

getMinimumSize

public java.awt.Dimension getMinimumSize()

Determines the mininum size necessary for this component. Called by this objects container.

Returns:

the minimum size of the object

getPreferredSize

public java.awt.Dimension getPreferredSize()

Determines the preferedSize necessary for this component. Called by this objects container.

Returns:

the preferred size of the object