edu.neu.ccs.gui
Class ExpressionEvaluationPane

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPanel
                  edu.neu.ccs.gui.DisplayPanel
                      edu.neu.ccs.gui.BasePane
                          edu.neu.ccs.gui.ExpressionEvaluationPane

All Implemented Interfaces:

Accessible, AlertListener, Displayable, EventListener, ImageObserver, JPTConstants, MalformedDataListener, MenuContainer, Serializable, SwingConstants

public class ExpressionEvaluationPane

extends BasePane

Class ExpressionEvaluationPane provides a pane that permits the interactive evaluation of expressions with data types BigInteger, double, and boolean.

Version:

2.5.0

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class javax.swing.JPanel

JPanel.AccessibleJPanel

Nested classes inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

protected SimpleAction	eval The eval action to evaluate an expression.
protected JButton	evalButton The button with the eval action.
protected Annotation	evaluationLabel The label for the evaluation text field.
protected Object[]	evaluationStuff The array with the evaluation label and text field.
protected VTable	evaluationTable The table with the evaluation label and text field.
protected TextFieldView	evaluationTFV The evaluation text field.
protected Annotation	expressionLabel The label for the expression text field.
protected Object[]	expressionStuff The array with the expression label and text field.
protected VTable	expressionTable The table with the expression label and text field.
protected TextFieldView	expressionTFV The expression text field.
protected Object[]	expStuff The array with the expression table, eval button, and evaluation table.
protected VTable	expTable The table with the expression table, eval button, and evaluation table.
protected TableLayout	typeLayout The layout for the 3 radio buttons, namely, 1 row and 3 columns.
protected Object[][]	typePairs The 2-dimensional array that pairs a string that will appear on a radio button with its corresponding Class object.
protected StringObjectRadioPanel	typePanel The radio button panel that will associate the string labels described above with corresponding objects of type Class.

Fields inherited from class edu.neu.ccs.gui.BasePane

baseFontSize, buttonFont, DEFAULT_BASE_FONT_SIZE, fieldFont, fontSize, gap, labelFont, largeFieldWidth, mediumFieldWidth, MINIMUM_FONT_SIZE, monospacedFontName, sansserifFontName, serifFontName, smallFieldWidth

Fields inherited from class edu.neu.ccs.gui.DisplayPanel

background, codec, CODEC

Fields inherited from class javax.swing.JPanel

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Container

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface edu.neu.ccs.gui.Displayable

DEFAULT_VIEW_STATE, VIEW_STATE

Fields inherited from interface edu.neu.ccs.util.JPTConstants

ABOVE, ALIGNMENT, BELOW, BOTTOM_LEFT, BOTTOM_RIGHT, DEFAULT, FONT, INPUT_PROPERTIES, MANDATORY, OPTIONAL, ORIENTATION, TOP_LEFT, TOP_RIGHT, VALUE

Fields inherited from interface javax.swing.SwingConstants

BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Fields inherited from interface java.awt.image.ImageObserver

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

Constructor Summary

ExpressionEvaluationPane()
The constructor for an expression-evaluation pane.

Method Summary

void	evaluate() The method to evaluate an expression.
String	getEvaluation() Returns the current contents of the evaluation text field.
String	getExpression() Returns the current contents of the expression text field.
static void	main(String[] args) The main method launches an expession-evaluation pane in its own GUI frame.
void	setExpression(String text) Set the contents of the expression text field.

Methods inherited from class edu.neu.ccs.gui.BasePane

getButtonFont, getFieldFont, getFontSize, getGap, getLabelFont, getLargeFieldWidth, getMediumFieldWidth, getSmallFieldWidth, initializeBasePane

Methods inherited from class edu.neu.ccs.gui.DisplayPanel

add, add, add, add, add, addBorder, addObject, addObject, addObject, addObject, bevelBorderLowered, bevelBorderLowered, bevelBorderLowered, bevelBorderLowered, bevelBorderLowered, bevelBorderRaised, bevelBorderRaised, bevelBorderRaised, bevelBorderRaised, bevelBorderRaised, compoundBorder, compoundBorder, dataMalformed, emptyBorder, emptyBorder, emptyBorder, endAlert, etchBorderLowered, etchBorderLowered, etchBorderLowered, etchBorderRaised, etchBorderRaised, etchBorderRaised, frame, frame, frame, frame, frame, frame, generalDialog, generalDialog, generalDialog, generalDialog, getCodec, getDefaultViewState, getDefaultViewStates, getDisplayables, getViewState, getViewStates, lineBorder, lineBorder, lineBorder, lineBorder, makeComponent, matteBorder, matteBorder, matteBorder, matteBorder, matteBorder, matteBorder, OKCancelDialog, OKCancelDialog, OKDialog, OKDialog, refreshComponent, remove, remove, removeAll, removeBorder, reset, sandwichBorder, setCodec, setDeepBackground, setDeepBackground, setDefaultViewState, setDefaultViewStates, setEnabled, setViewState, setViewStates, startAlert, titleBorder, titleBorder, titleBorder, titleBorder, titleBorder, titleBorder, titleBorder, titleBorder, uniformizeHeight, uniformizeSize, uniformizeWidth, YesNoCancelDialog, YesNoCancelDialog

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, transferFocusDownCycle, 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, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, 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

typePairs

protected Object[][] typePairs

The 2-dimensional array that pairs a string that will appear on a radio button with its corresponding Class object.

The radio button strings are:

• BigInteger
• Double
• Boolean

The corresponding Class objects are:

• XBigInteger.class
• XDouble.class
• XBoolean.class

typeLayout

protected TableLayout typeLayout

The layout for the 3 radio buttons, namely, 1 row and 3 columns.

typePanel

protected StringObjectRadioPanel typePanel

The radio button panel that will associate the string labels described above with corresponding objects of type Class.

The radio button strings are:

• BigInteger
• Double
• Boolean

The corresponding Class objects are:

• XBigInteger.class
• XDouble.class
• XBoolean.class

expressionLabel

protected Annotation expressionLabel

The label for the expression text field.

expressionTFV

protected TextFieldView expressionTFV

The expression text field.

expressionStuff

protected Object[] expressionStuff

The array with the expression label and text field.

expressionTable

protected VTable expressionTable

The table with the expression label and text field.

evaluationLabel

protected Annotation evaluationLabel

The label for the evaluation text field.

evaluationTFV

protected TextFieldView evaluationTFV

The evaluation text field.

evaluationStuff

protected Object[] evaluationStuff

The array with the evaluation label and text field.

evaluationTable

protected VTable evaluationTable

The table with the evaluation label and text field.

eval

protected SimpleAction eval

The eval action to evaluate an expression.

Utilizes the method evaluate().

evalButton

protected JButton evalButton

The button with the eval action.

expStuff

protected Object[] expStuff

The array with the expression table, eval button, and evaluation table.

expTable

protected VTable expTable

The table with the expression table, eval button, and evaluation table.

Constructor Detail

ExpressionEvaluationPane

public ExpressionEvaluationPane()

The constructor for an expression-evaluation pane.

Method Detail

evaluate

public void evaluate()

The method to evaluate an expression.

The expression is the text in the expression text field.

The expression value as text is placed into the evaluation text field.

If an error occurs, an error dialog will be displayed. If evaluation is then cancelled, the word Cancelled is placed into the evaluation text field.

Warning: If the caller sets the contents of the expression text field algorithmically and algorithmically calls this method, then, if an error occurs, an error dialog will be displayed that may be quite puzzing to a user. Hence a direct call of this method should be done with the utmost care if at all.

setExpression

public void setExpression(String text)

Set the contents of the expression text field.

Parameters:

text -

getExpression

public String getExpression()

Returns the current contents of the expression text field.

getEvaluation

public String getEvaluation()

Returns the current contents of the evaluation text field.

main

public static void main(String[] args)

The main method launches an expession-evaluation pane in its own GUI frame.

Use the call:

  ExpressionEvaluationPane.main(null)

Parameters:

args - ignored and may be null