Package calculator

Class CalculatorController

java.lang.Object

calculator.CalculatorController

All Implemented Interfaces:

ActionListener, TextListener, EventListener

public class CalculatorController
extends Object
implements TextListener, ActionListener

This class represents the controller in the MVC architecture for a calculator application. It handles all the listener event from view and perform operation using model.

Since:

24 Aug 2023

Version:

1.0.0

Author:

Shamith Nakka

Field Summary

Fields

Modifier and Type	Field	Description
private final CalculatorModel	model
private StringBuilder	textFieldCurrentText
private final CalculatorView	view

Constructor Summary

Constructors

Constructor	Description
CalculatorController()	Constructs a new CalculatorModel instance.
CalculatorController(CalculatorView view, CalculatorModel model)	Constructs a new CalculatorModel instance.

Method Summary

Modifier and Type	Method	Description
void	actionPerformed(ActionEvent event)	This is an event-handler will handle all the button events.
void	textValueChanged(TextEvent event)	This is an event-handler that make sure only numeric character are present within the text field.

Methods inherited from class java.lang.Object

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

Field Details

model

private final CalculatorModel model

textFieldCurrentText

private StringBuilder textFieldCurrentText

view

private final CalculatorView view

Constructor Details

CalculatorController

public CalculatorController()

Constructs a new CalculatorModel instance. This constructor initializes any required data or resources.

CalculatorController

public CalculatorController(CalculatorView view,
 CalculatorModel model)

Constructs a new CalculatorModel instance. This constructor initializes with provided data or resources.

Parameters:

view - : a CalculatorView instance.

model - : a CalculatorModel instance.

Method Details

actionPerformed

public void actionPerformed(ActionEvent event)

This is an event-handler will handle all the button events.

Specified by:

actionPerformed in interface ActionListener

textValueChanged

public void textValueChanged(TextEvent event)

This is an event-handler that make sure only numeric character are present within the text field.

Specified by:

textValueChanged in interface TextListener