Class parkingLotObserver

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Canvas
              |
              +--parkingLotObserver

All Implemented Interfaces:

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

public class parkingLotObserver

extends java.awt.Canvas

~mohammad/public_html/classes/csc241/samples/parkingLotObserver.java parkingLotObserver is a Canvas and needs a 300X300 area to draw correctly. Each car is represented using a squareLight object of size 30X30. There are five rows of cars with 9 car slots per row represented here. parkingLot object being observed here must have a capacity of 45, this class will cause an abnormal exit, if the parkinglot doesn't meet this requirement. parkingLotsObservers expect to be repainted everytime enter/exit happens to the parkingLot that they are observing; if the carCount of their parkingLot changes by more than one car since the last time they repainted, they cause an abnormal exit.

See Also:

Serialized Form

Field Summary

protected static java.awt.Color	backGroundColor
protected static int	carsPerRow
protected static int	distanceBetweenRows
protected static int	maxCap
protected static java.awt.Color	row1
protected static java.awt.Color	row2
protected static java.awt.Color	row3
protected static java.awt.Color	row4
protected static java.awt.Color	row5
protected static int	rows
protected static int	slotSize
protected static int	X_forTheFirstCar
protected static int	Y_forTheFirstCar

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

parkingLotObserver(lab2ParkingLot p)
Get reference to the parkingLot to observe, and initialize all car slots.

Method Summary

int	lastCount() Return lastCount remembered by the observer.
lab2ParkingLot	p() Return the parkingLot being observed.
void	paint(java.awt.Graphics g) Draw the image of the parking lot.

Methods inherited from class java.awt.Canvas

addNotify, createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy, update

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, validate

Methods inherited from class java.lang.Object

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

Field Detail

row1

protected static final java.awt.Color row1

row2

protected static final java.awt.Color row2

row3

protected static final java.awt.Color row3

row4

protected static final java.awt.Color row4

row5

protected static final java.awt.Color row5

backGroundColor

protected static final java.awt.Color backGroundColor

slotSize

protected static final int slotSize

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Constant Field Values

rows

protected static final int rows

See Also:

Constant Field Values

carsPerRow

protected static final int carsPerRow

See Also:

Constant Field Values

distanceBetweenRows

protected static final int distanceBetweenRows

See Also:

Constant Field Values

X_forTheFirstCar

protected static final int X_forTheFirstCar

See Also:

Constant Field Values

Y_forTheFirstCar

protected static final int Y_forTheFirstCar

See Also:

Constant Field Values

maxCap

protected static final int maxCap

See Also:

Constant Field Values

Constructor Detail

parkingLotObserver

public parkingLotObserver(lab2ParkingLot p)

Get reference to the parkingLot to observe, and initialize all car slots.

Method Detail

p

public lab2ParkingLot p()

Return the parkingLot being observed.

lastCount

public int lastCount()

Return lastCount remembered by the observer.

paint

public void paint(java.awt.Graphics g)

Draw the image of the parking lot.

Overrides:

paint in class java.awt.Canvas