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THuiCommand Class Reference

class THuiCommand

THuiCommand is the base class of all commands. A command is an instruction to some class that can be set to occur some time in the future. Each command stores information about an operation. Each command is also responsible for the execution of the command. Commands are processed by the class's OfferEventL() method.

Public Member Functions
	~THuiCommand()
void	ExecuteL(CHuiEnv &)
IMPORT_C const THuiObjectCommand *	ObjectCommand()
IMPORT_C TAny *	Sender()
IMPORT_C CHuiControl *	SenderControl()
IMPORT_C CHuiControlGroup *	SenderControlGroup()
IMPORT_C THuiCommandObjectType	SenderType()
IMPORT_C CHuiVisual *	SenderVisual()
IMPORT_C void	SetSender(THuiCommandObjectType, TAny *)
TInt	Size()
IMPORT_C THuiCommandType	Type()

Protected Member Functions
	THuiCommand(THuiCommandType)
IMPORT_C void	CommandExtension(const TUid &, TAny **)

Private Attributes
TAny *	iSender
THuiCommandObjectType	iSenderType
TInt	iSpare1
TInt	iSpare2
THuiCommandType	iType

Constructor & Destructor Documentation

THuiCommand(THuiCommandType)

IMPORT_C

THuiCommand

(

THuiCommandType

aType

)

[protected]

Protected constructor.

Parameters

THuiCommandType aType

Type of the command.

~THuiCommand()

IMPORT_C

~THuiCommand

(

)

[virtual]

Member Functions Documentation

CommandExtension(const TUid &, TAny **)

IMPORT_C void	CommandExtension	(	const TUid &	aExtensionUid,
			TAny **	aExtensionParams
		)	[protected, virtual]

Parameters

const TUid & aExtensionUid
TAny ** aExtensionParams

ExecuteL(CHuiEnv &)

void

ExecuteL

(

CHuiEnv &

aEnv

)

const [pure virtual]

Executes the command.

Parameters

CHuiEnv & aEnv

The environment in which the command is being executed.

ObjectCommand()

IMPORT_C const THuiObjectCommand *

ObjectCommand

(

)

const [virtual]

Returns a pointer to the command casted to THuiObjectCommand. If this is not possible (the command is not derived from THuiObjectCommand), returns NULL instead.

Sender()

IMPORT_C TAny *

Sender

(

)

const

Returns the sender object. This is the object which issued the command originally.

SenderControl()

IMPORT_C CHuiControl *

SenderControl

(

)

const

Returns the sender control. Returns NULL if the sender is not a control.

Sender()

SenderControlGroup()

IMPORT_C CHuiControlGroup *

SenderControlGroup

(

)

const

Returns the sender control group. Returns NULL if the sender is not a control group.

Sender()

SenderType()

IMPORT_C THuiCommandObjectType

SenderType

(

)

const

Determines the type of the object that sent the command.

SenderVisual()

IMPORT_C CHuiVisual *

SenderVisual

(

)

const

Returns the sender visual. Returns NULL if the sender is not a visual.

Sender()

SetSender(THuiCommandObjectType, TAny *)

IMPORT_C void	SetSender	(	THuiCommandObjectType	aType,
			TAny *	aSender
		)

Sets the sender object of the command. The sender must not be deleted while the command is pending execution in a scheduler.

Parameters

THuiCommandObjectType aType	Sender type.
TAny * aSender	Pointer to sender.

Size()

TInt

Size

(

)

const [pure virtual]

Returns the size of the command.

Type()

IMPORT_C THuiCommandType

Type

(

)

const

Determines the type of the command.

Member Data Documentation

TAny * iSender

TAny *

iSender

[private]

Object that sent this command. Must exist.

THuiCommandObjectType iSenderType

THuiCommandObjectType

iSenderType

[private]

Type of the object that sent the command.

TInt iSpare1

TInt

iSpare1

[private]

TInt iSpare2

TInt

iSpare2

[private]

THuiCommandType iType

THuiCommandType

iType

[private]

Type of the command. Depends on the command class.