org.eclipse.nebula.widgets.opal.calculator

Class CalculatorEngine

java.lang.Object

org.eclipse.nebula.widgets.opal.calculator.CalculatorEngine

class CalculatorEngine
extends java.lang.Object

This is the calculator engine

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static java.lang.String	OPERATOR_DIVIDE
(package private) static java.lang.String	OPERATOR_MINUS
(package private) static java.lang.String	OPERATOR_MULTIPLY
(package private) static java.lang.String	OPERATOR_PLUS

Constructor Summary

Constructors

Constructor and Description
CalculatorEngine(CalculatorButtonsComposite composite) Constructor

Method Summary

Modifier and Type	Method and Description
void	cancel()
(package private) void	processEquals() Process equals operation
(package private) void	processInverseOperation() Process 1/x operation
(package private) void	processOperation(java.lang.String operator)
(package private) void	processPerCentageOperation() Process percentage operation
(package private) void	processSignChange() Process +/- operation
(package private) void	processSquareRootOperation() Process square root operation

Methods inherited from class java.lang.Object

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

Field Detail

OPERATOR_PLUS

static final java.lang.String OPERATOR_PLUS

See Also:

Constant Field Values

OPERATOR_MINUS

static final java.lang.String OPERATOR_MINUS

See Also:

Constant Field Values

OPERATOR_MULTIPLY

static final java.lang.String OPERATOR_MULTIPLY

See Also:

Constant Field Values

OPERATOR_DIVIDE

static final java.lang.String OPERATOR_DIVIDE

See Also:

Constant Field Values

Constructor Detail

CalculatorEngine

CalculatorEngine(CalculatorButtonsComposite composite)

Constructor

Parameters:

calculator - calculator widget associated to this engine

Method Detail

processEquals

void processEquals()

Process equals operation

processInverseOperation

void processInverseOperation()

Process 1/x operation

processOperation

void processOperation(java.lang.String operator)

Parameters:

operator - operation to process

processPerCentageOperation

void processPerCentageOperation()

Process percentage operation

processSignChange

void processSignChange()

Process +/- operation

processSquareRootOperation

void processSquareRootOperation()

Process square root operation

cancel

public void cancel()