com.example.graphics.observer.ShapeSubject Class Reference

Collaboration diagram for com.example.graphics.observer.ShapeSubject:

Public Member Functions
	ShapeSubject ()
void	addObserver (ShapeObserver observer)
void	notifyShapeAdded (Shape shape)
void	notifyShapeModified (Shape shape)
void	notifyShapeRemoved (Shape shape)
void	removeObserver (ShapeObserver observer)

Private Attributes
final List< ShapeObserver >	observers

Detailed Description

Subject class for the Observer pattern. This maintains a list of observers and notifies them of changes.

Definition at line 11 of file ShapeSubject.java.

Constructor & Destructor Documentation

ShapeSubject()

com.example.graphics.observer.ShapeSubject.ShapeSubject ( )

inline

Constructor initializes the observer list

Definition at line 17 of file ShapeSubject.java.

References observers.

Member Function Documentation

addObserver()

void com.example.graphics.observer.ShapeSubject.addObserver ( ShapeObserver observer )

inline

Add an observer to be notified of changes

Parameters

observer

the observer to add

Definition at line 25 of file ShapeSubject.java.

References observers.

notifyShapeAdded()

void com.example.graphics.observer.ShapeSubject.notifyShapeAdded ( Shape shape )

inline

Notify all observers that a shape was added

Parameters

shape

the shape that was added

Definition at line 43 of file ShapeSubject.java.

References observers.

notifyShapeModified()

void com.example.graphics.observer.ShapeSubject.notifyShapeModified ( Shape shape )

inline

Notify all observers that a shape was modified

Parameters

shape

the shape that was modified

Definition at line 63 of file ShapeSubject.java.

References observers.

notifyShapeRemoved()

void com.example.graphics.observer.ShapeSubject.notifyShapeRemoved ( Shape shape )

inline

Notify all observers that a shape was removed

Parameters

shape

the shape that was removed

Definition at line 53 of file ShapeSubject.java.

References observers.

removeObserver()

void com.example.graphics.observer.ShapeSubject.removeObserver ( ShapeObserver observer )

inline

Remove an observer from the notification list

Parameters

observer

the observer to remove

Definition at line 35 of file ShapeSubject.java.

References observers.

Member Data Documentation

observers

final List<ShapeObserver> com.example.graphics.observer.ShapeSubject.observers

private

Definition at line 12 of file ShapeSubject.java.

Referenced by ShapeSubject(), addObserver(), notifyShapeAdded(), notifyShapeModified(), notifyShapeRemoved(), and removeObserver().

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The documentation for this class was generated from the following file:

• src/main/java/com/example/graphics/observer/ShapeSubject.java