Package dev.zemco.codegame.presentation.execution

Class UpdatableMemoryCellObserverAdapter

java.lang.Object

dev.zemco.codegame.presentation.execution.UpdatableMemoryCellObserverAdapter

All Implemented Interfaces:

IMemoryCellObserver

public class UpdatableMemoryCellObserverAdapter
extends Object
implements IMemoryCellObserver

Adapts existing memory cell by observing its value when manually requested using the updateValue() method. Value updates are listenable to through the value property.

Author:

Erik Zemčík

Property Summary

Properties

Type	Property	Description
javafx.beans.value.ObservableObjectValue<Integer>	value	Property indicating last value of the observed memory cell.

Constructor Summary

Constructors

Constructor	Description
UpdatableMemoryCellObserverAdapter(int address, IMemoryCell memoryCell)	Creates an instance of UpdatableMemoryCellObserverAdapter adapting and observing an existing memory cell.

Method Summary

Modifier and Type	Method	Description
int	getAddress()	Returns the address of the target memory cell within the execution memory.
void	updateValue()	Observes the current value of the adapted memory cell and notifies its listeners via the valueProperty() if the value has changed.
javafx.beans.value.ObservableObjectValue<Integer>	valueProperty()	Property indicating last value of the observed memory cell.

Methods inherited from class java.lang.Object

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

Property Details

value

public javafx.beans.value.ObservableObjectValue<Integer> valueProperty

Specified by:

valueProperty in interface IMemoryCellObserver

Constructor Details

UpdatableMemoryCellObserverAdapter

public UpdatableMemoryCellObserverAdapter(int address,
 IMemoryCell memoryCell)

Creates an instance of UpdatableMemoryCellObserverAdapter adapting and observing an existing memory cell.

Parameters:

address - address of the target memory cell within the execution memory

memoryCell - memory cell to adapt and observe

Throws:

IllegalArgumentException - if address is not a positive integer or if memoryCell is null

Method Details

updateValue

public void updateValue()

Observes the current value of the adapted memory cell and notifies its listeners via the valueProperty() if the value has changed.

getAddress

public int getAddress()

Description copied from interface: IMemoryCellObserver

Returns the address of the target memory cell within the execution memory.

Specified by:

getAddress in interface IMemoryCellObserver

Returns:

address of the memory cell

valueProperty

public javafx.beans.value.ObservableObjectValue<Integer> valueProperty()

Description copied from interface: IMemoryCellObserver

Property indicating last value of the observed memory cell. This property will emit the observed value once the observer observes a change. This property may hold null when the observed memory cell holds no value.

Specified by:

valueProperty in interface IMemoryCellObserver