TableCellObserver Class Reference

Inheritance diagram for TableCellObserver:

Public Member Functions
	TableCellObserver (IPMUnknown *boss)
virtual	~TableCellObserver ()
virtual void	Update (const ClassID &theChange, ISubject *theSubject, const PMIID &protocol, void *changedBy)
virtual void	AutoAttach ()
virtual void	AutoDetach ()
Public Member Functions inherited from CObserver
	CObserver (IPMUnknown *boss, PMIID interfaceID=IID_IOBSERVER)
IChangeManager *	GetChangeManager () const
virtual void	SetAttachIID (PMIID iid)
virtual PMIID	GetAttachIID () const
virtual void	SetEnabled (bool16 state)
virtual bool16	IsEnabled () const
virtual void	LazyUpdate (ISubject *theSubject, const PMIID &protocol, const LazyNotificationData *data)

Additional Inherited Members
Public Types inherited from IObserver
enum	{ kDefaultIID = IID_IOBSERVER }
Protected Attributes inherited from CObserver
bool16	fDetachSubjectsOnDelete
PMIID	fAttachIID
const UIDRef	fThisRef
bool16	fEnabled

Detailed Description

This implementation handles updating of the scroll bars and updates the table cell widget (kTableCellWidgetBoss).

Constructor & Destructor Documentation

Binds the C implementation class onto its ImplementationID making the C code callable by the application * TableCellObserver::TableCellObserver

(

IPMUnknown *

boss

)

Constructor.

Parameters

boss	interface ptr from boss object on which this interface is aggregated.

TableCellObserver::~TableCellObserver ( )

virtual

Destructor.

Member Function Documentation

void TableCellObserver::AutoAttach ( void  )

virtual

Called by the application to allow the observer to attach to the subjects to be observed. AutoAttach is only called for registered observers of widgets. When AutoAttach is called from the app, we attach ourselves to scrollbars.

Reimplemented from CObserver.

void TableCellObserver::AutoDetach ( void  )

virtual

Called by the application to allow the observer to detach from the subjects being observed. AutoDetach is only called for registered observers of widgets. When AutoDetach is called from the app, we detach ourselves to scrollbars.

Reimplemented from CObserver.

void TableCellObserver::Update ( const ClassID &  theChange, ISubject *  theSubject, const PMIID &  protocol, void *  changedBy  )

virtual

Respond to a change in an observed subject. Called by the host when the observed object changes. Called for all registered observers, and is the method through which changes are broadcast. Our observer is attached to two scrollbar widget.

Parameters

theChange	theChange represents the change to an object, often this is a command id.
theSubject	theSubject is the subject that changed.
protocol	protocol is the interface of the subject's boss that changed.
changedBy	changedBy is used to pass additional data about the change, often this is a pointer to the command that caused the change.

Implements IObserver.