cs101.awt
Class DisplayField

java.lang.Object
  java.awt.Component
      java.awt.Canvas
          cs101.awt.ColorField
              cs101.awt.DisplayField

All Implemented Interfaces:

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

public class DisplayField

extends ColorField

cs101.awt.DisplayField extends cs101.util.ColorField to add a line of text to the colored rectangle.

The size of the rectangle is supposed to change with the length of the text. The color of the field can also change between two predetermined colors.

Copyright 1996 Massachusetts Institute of Technology

Version:

$Id: DisplayField.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:

Serialized Form

Nested Class Summary

Nested classes inherited from class java.awt.Canvas

java.awt.Canvas.AccessibleAWTCanvas

Nested classes inherited from class java.awt.Component

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

Field Summary

protected java.lang.String

text the string to be displayed

Fields inherited from class cs101.awt.ColorField

dim, falseColor, state, trueColor

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

DisplayField(java.lang.String text, boolean initState, java.awt.Color trueColor, java.awt.Color falseColor)
Constructs a rectangular colorfield with the passed attributes.

Method Summary

void	addNotify() Calls super.addNotify.
java.awt.Dimension	getMinimumSize() Called by this object's container to determine the minimum space required by this object.
java.awt.Dimension	getPreferredSize() Called by this object's container to determine the minimum space required by this object.
void	paint(java.awt.Graphics g) Calls the ColorField.paint to do the field.
void	setText(java.lang.String text) Changes the text of the DisplayField to the string passed.

Methods inherited from class cs101.awt.ColorField

changeState

Methods inherited from class java.awt.Canvas

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, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, 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

text

protected java.lang.String text

the string to be displayed

Constructor Detail

DisplayField

public DisplayField(java.lang.String text,
                    boolean initState,
                    java.awt.Color trueColor,
                    java.awt.Color falseColor)

Constructs a rectangular colorfield with the passed attributes.

Parameters:

text - The text to intially display in the field.

initState - The initial state of the color field.

trueColor - The color of the field when the state is true.

falseColor - The color of the field when the state is false.

Method Detail

setText

public void setText(java.lang.String text)

Changes the text of the DisplayField to the string passed. Should also resize the component to fit the text. This is not fully implemented yet.

Parameters:

text - The string to be displayed in the field.

addNotify

public void addNotify()

Calls super.addNotify. Then measures it's intial size.
Note: Must be called from here so that the Font Metrics is available for measuring.

getPreferredSize

public java.awt.Dimension getPreferredSize()

Called by this object's container to determine the minimum space required by this object.

Overrides:

getPreferredSize in class ColorField

Returns:

the prefered size of the object

getMinimumSize

public java.awt.Dimension getMinimumSize()

Called by this object's container to determine the minimum space required by this object.

Overrides:

getMinimumSize in class ColorField

Returns:

the minimum size of the object

paint

public void paint(java.awt.Graphics g)

Calls the ColorField.paint to do the field. Then adds the text in black.

Overrides:

paint in class ColorField

Parameters:

g - The graphics context to paint into.