GTTxtEdtNewDeleteStoryObserver Class Reference

Inheritance diagram for GTTxtEdtNewDeleteStoryObserver:

Public Member Functions
	GTTxtEdtNewDeleteStoryObserver (IPMUnknown *boss)
virtual	~GTTxtEdtNewDeleteStoryObserver ()
virtual void	AutoAttach ()
virtual void	AutoDetach ()
virtual void	Update (const ClassID &theChange, ISubject *theSubject, const PMIID &protocol, void *changedBy)
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

An observer watching for stories being created and deleted. This observer gets attached on document

creation/open by the GTTxtEdtResponder. While the responder also receives new/delete story events, this observer allows us to manage the invalhandler appropriately (we require an inval handler per document). If this was managed within the responder, we would require to manintain the list of invalidation handlers per document.

The invalidation hander is created on attach (which relates to a document create/open event), and destroyed on detach (document close). If we receive a story create/delete signal, we indicate that the event if of interest by calling the inval handler.

See Also

GTTxtEdtInvalHandler

Constructor & Destructor Documentation

GTTxtEdtNewDeleteStoryObserver::GTTxtEdtNewDeleteStoryObserver

(

IPMUnknown *

boss

)

Constructor

GTTxtEdtNewDeleteStoryObserver::~GTTxtEdtNewDeleteStoryObserver ( )

virtual

Destructor

Member Function Documentation

void GTTxtEdtNewDeleteStoryObserver::AutoAttach ( void  )

virtual

Attach this observer to the document.

Reimplemented from CObserver.

void GTTxtEdtNewDeleteStoryObserver::AutoDetach ( void  )

virtual

Detach this observer from the document

Reimplemented from CObserver.

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

virtual

Signal the observer that a change has occurred (used to determine whether we want to record this event through our invalidation handler).

Implements IObserver.