MMsvEntryObserver Class Reference

#include <mw/msvapi.h>

class MMsvEntryObserver

Public Member Enumerations
enum	TMsvEntryEvent { EMsvEntryChanged, EMsvNewChildren, EMsvDeletedChildren, EMsvChildrenChanged, ..., EMsvEntryMoved }

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

Detailed Description

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().

Member Enumeration Documentation

Enum TMsvEntryEvent

Defines entry event types.

Enumerator	Value	Description
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.

Member Function 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.