org.gwtwidgets.client.util
Class CalcEngine

java.lang.Object
  org.gwtwidgets.client.util.CalcEngine

public abstract class CalcEngine
extends java.lang.Object

Field Summary

static int	OP_CLEAR
static int	OP_DEC
static int	OP_DIV
static int	OP_EQUALS
static int	OP_ERASE
static int	OP_MINUS
static int	OP_MULT
static int	OP_NEGATE
static int	OP_NONE
static int	OP_PLUS

Constructor Summary

protected

CalcEngine(CalcDisplayListener cdl)

Method Summary

com.google.gwt.user.client.ui.Button	createNumberButton(java.lang.String styleName, java.lang.String symbol, int num)
com.google.gwt.user.client.ui.Button	createOpButton(java.lang.String styleName, java.lang.String symbol, int op)
double	getTotal()
void	pressDigit(int num)
void	pressOperator(int op)
void	refreshDisplay()

Methods inherited from class java.lang.Object

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

Field Detail

OP_NONE

public static final int OP_NONE

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Constant Field Values

OP_PLUS

public static final int OP_PLUS

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Constant Field Values

OP_MINUS

public static final int OP_MINUS

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Constant Field Values

OP_EQUALS

public static final int OP_EQUALS

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Constant Field Values

OP_CLEAR

public static final int OP_CLEAR

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Constant Field Values

OP_ERASE

public static final int OP_ERASE

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Constant Field Values

OP_MULT

public static final int OP_MULT

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Constant Field Values

OP_DIV

public static final int OP_DIV

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Constant Field Values

OP_DEC

public static final int OP_DEC

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Constant Field Values

OP_NEGATE

public static final int OP_NEGATE

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Constant Field Values

Constructor Detail

CalcEngine

protected CalcEngine(CalcDisplayListener cdl)

Method Detail

createNumberButton

public com.google.gwt.user.client.ui.Button createNumberButton(java.lang.String styleName,
                                                               java.lang.String symbol,
                                                               int num)

createOpButton

public com.google.gwt.user.client.ui.Button createOpButton(java.lang.String styleName,
                                                           java.lang.String symbol,
                                                           int op)

pressOperator

public void pressOperator(int op)

refreshDisplay

public void refreshDisplay()

pressDigit

public void pressDigit(int num)

getTotal

public double getTotal()