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	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 Description

CalculatorEngine(CalculatorButtonsComposite composite)
Constructor

Method Summary

Modifier and Type	Method	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 Details
- 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 Details
- CalculatorEngine
  
  CalculatorEngine(CalculatorButtonsComposite composite)
  
  Constructor
  
  Parameters:
  
  calculator - calculator widget associated to this engine
Method Details
- 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()