| class MAknsControlContext |
Interface that provides context specific skin parameters. This interface is used by AknsDrawUtils to query context specific parameters, such as background override. Application should instantiate a class that implements this interface and provide pointer to it using MObjectProvider::MopSupplyObject in the appropriate control.
This is a public class with exported functions. The class is not intended for user derivation - concrete classes implementing the interface are provided by the library. See CAknsBasicBackgroundControlContext and CAknsListBoxBackgroundControlContext for further details.
AknSkins.lib
2.0
| Public Member Functions | |
|---|---|
| ~MAknsControlContext() | |
| TBool | IsCompatibleWithType(const TAknsControlContextType) |
| IMPORT_C TTypeUid::Ptr | SupplyMopObject(TTypeUid, MAknsControlContext *) |
| TAny * | SupplySkinObject(TAknsCCObject) |
| TInt | SupplySkinParameter(TAknsCCParameter) |
| TInt | UpdateContext() |
| Protected Member Functions | |
|---|---|
| TInt | Reserved2() |
| ~MAknsControlContext | ( | ) | [inline, virtual] |
Destructor. Destructor is provided only to enable deletion using base class pointer. Caller should never delete control context retrieved through MObjectProvider interface.
| TBool | IsCompatibleWithType | ( | const TAknsControlContextType | aType | ) | const [pure virtual] |
Determines whether this control context is compatible with the given derived type.
2.0
ETrue if this control context instance is compatible with the given type (i.e. can be casted to the corresponding concrete class). EFalse otherwise.
| const TAknsControlContextType aType | Type of the derived control context class (one of the values in TAknsControlContextType). |
| IMPORT_C TTypeUid::Ptr | SupplyMopObject | ( | TTypeUid | aId, |
| MAknsControlContext * | aContext | |||
| ) | [static] | |||
Returns type UID pointer that can be used in MopSupplyObject.
2.0
Type UID pointer containing aContext, or NULL type UID pointer if given type UID does not match MAknsControlContext or aContext is NULL.
| TTypeUid aId | Type UID, should be the same that was given as aId parameter of MopSupplyObject. |
| MAknsControlContext * aContext | Pointer to an MAknsControlContext instance. |
| TAny * | SupplySkinObject | ( | TAknsCCObject | aObject | ) | [pure virtual] |
Provides context specific object.
2.0
Pointer to object as defined in TAknsCCObject for that specific aObject parameter value. For unknown or unhandled values NULL must be returned.
| TAknsCCObject aObject | Type of the object to be retrieved. Possible values are defined in TAknsCCObject enumeration. |
| TInt | SupplySkinParameter | ( | TAknsCCParameter | aParam | ) | [pure virtual] |
Provides context specific integer parameter.
2.0
Integer value as defined in TAknsCCParameter for the particular parameter. For unknown or unhandled values zero must be returned.
| TAknsCCParameter aParam | Type of the parameter to be retrieved. Possible values are defined in TAknsCCParameter enumeration. |
| TInt | UpdateContext | ( | ) | [virtual] |
Updates the control context, if necessary. This method is called by the framework before drawing with the context.
Base class implementation returns 0.
2.6
Return value reserved for future use. Currently returns 0.