#include <btsdp.h>
| class MSdpAttributeValueVisitor |
| Public Member Functions | |
|---|---|
| pure virtual void | EndListL() |
| virtual IMPORT_C void | MSAVV_ExtensionInterfaceL(TUid, void *&) |
| pure virtual void | StartListL(CSdpAttrValueList &) |
| pure virtual void | VisitAttributeValueL(CSdpAttrValue &, TSdpElementType) |
Abstract interface that can be implemented to receive an enumeration of the values in an attribute list.
The class member functions are called by an CSdpAttrValue (or one of its sub-classes) object when CSdpAttrValue::AcceptVisitorL() is called.
Note that:
When AcceptVisitorL() is called on attributes that are not lists (not DEA or DES), only VisitAttributeValueL() is called, passing the attribute value object itself (i.e. *this), and the value attribute type.
When AcceptVisitorL() is called on attributes that are lists (DEA or DES), VisitAttributeValueL() is called for each member of the list
This implements the standard Visitor pattern.
See also: CSdpAttrValue::AcceptVisitorL()
| IMPORT_C void | MSAVV_ExtensionInterfaceL | ( | TUid | aInterface, |
| void *& | aObject | |||
| ) | [virtual] | |||
Returns a null aObject if the extension is not implemented, or a pointer to another interface if it is. This virtual function allows the M- classes to be extended in future in a binary compatible way by providing a method that clients can override in future to allow extra callbacks to be made via aObject.
| Parameter | Description |
|---|---|
| aInterface | UID of the interface to return |
| aObject | the container for another interface as specified by aInterface |
| void | StartListL | ( | CSdpAttrValueList & | aList | ) | [pure virtual] |
Called to indicate the start of a list of attribute values.
This call is followed by a call to VisitAttributeValueL() for each attribute value in the list, and concluded by a call to EndList().
| Parameter | Description |
|---|---|
| aList | Attribute value list |
| void | VisitAttributeValueL | ( | CSdpAttrValue & | aValue, |
| TSdpElementType | aType | |||
| ) | [pure virtual] | |||
Called to pass an attribute value.
| Parameter | Description |
|---|---|
| aValue | Attribute value |
| aType | Value type |