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MMsvEntryObserver Class Reference

class MMsvEntryObserver

Provides the interface for notification of events associated with an entry.

The types of event are given in the enumeration TMsvEntryEvent. Clients can provide an object that implements the interface, and set it to be notified through CMsvEntry::AddObserverL().

Public Member Functions
void	HandleEntryEventL(TMsvEntryEvent, TAny , TAny , TAny *)

Public Member Enumerations
enum	TMsvEntryEvent { EMsvEntryChanged, EMsvNewChildren, EMsvDeletedChildren, EMsvChildrenChanged, EMsvEntryDeleted, EMsvContextInvalid, EMsvChildrenMissing, EMsvChildrenInvalid, EMsvEntryMoved }

Member Functions Documentation

HandleEntryEventL(TMsvEntryEvent, TAny , TAny , TAny *)

void	HandleEntryEventL	(	TMsvEntryEvent	aEvent,
			TAny *	aArg1,
			TAny *	aArg2,
			TAny *	aArg3
		)	[pure virtual]

Indicates when called by a CMsvEntry object that an event has occurred.

The type of event is indicated by the value of aEvent. The interpretation of the aArg1-3 values depends on this type. For most event types, the action that is taken, for example, updating the display, is client-specific. Most clients will need to handle events that make the current context invalid: EMsvContextInvalid and EMsvEntryDeleted.

An implementation can leave if an error occurs. The leave is not trapped by the framework, so the error code may be displayed to the user.

Parameters

TMsvEntryEvent aEvent	Indicates the event type.
TAny * aArg1	Event-specific argument value
TAny * aArg2	Event-specific argument value
TAny * aArg3	Event-specific argument value

Member Enumerations Documentation

Enum TMsvEntryEvent

Defines entry event types.

Enumerators

EMsvEntryChanged	The entry has been changed, either as a result of a CMsvEntry::ChangeL() or by another client.
EMsvNewChildren	New children have been created. aArg1 points to a CMsvEntrySelection contain the ID of the new children.
EMsvDeletedChildren	Children have been deleted. aArg1 points to a CMsvEntrySelection contain the ID of the deleted children.
EMsvChildrenChanged	One or more of the children have been changed. aArg1 points to a CMsvEntrySelection containing the IDs of the changed children.
EMsvEntryDeleted	The entry has been deleted by another client. The context is now invalid.
EMsvContextInvalid	The context has become invalid. The entry has been changed, but the CMsvEntry was unable to update the context. The context will only become valid by a successful CMsvEntry::SetEntryL() call. aArg1 points to a TInt containing the error code for the invalid context.
EMsvChildrenMissing	Some new children have been created, but CMsvEntry was unable to retrieve the data from the Message Server. The children will be correct only after a successful call to CMsvEntry::SetEntryL().
EMsvChildrenInvalid	An error has occurred such that the status of the children is unknown and probably invalid. aArg1 points to a TInt containing the error code for the invalid context
EMsvEntryMoved	The current entry has been moved by another client. The CMsvEntry has already been updated to reflect the new parent.