MCoeControlObserver Class Reference

#include <mw/coecobs.h>

Link against: cone.lib

class MCoeControlObserver

Public Member Enumerations
enum	TCoeEvent { EEventRequestExit, EEventRequestCancel, EEventRequestFocus, EEventPrepareFocusTransition, ..., EEventInteractionRefused }

Public Member Functions
pure virtual void	HandleControlEventL(CCoeControl *, TCoeEvent)

Protected Member Functions
	MCoeControlObserver()

Detailed Description

Interface for a control to send events to its observer control.

Member Enumeration Documentation

Enum TCoeEvent

Observer event types.

Enumerator	Value	Description
EEventRequestExit		Request exit. This event is used to indicate exit from a mode when the user has completed an operation 'successfully'. For example, this event might be sent when the user has a choice list open and presses enter to select an item. The UI Control Framework does not use this event itself.
EEventRequestCancel		Request cancel. This event is used to indicate exit from a mode when the user has cancelled the operation that caused entry into the mode originally. For example, this event might be sent when the user presses escape to close the list and leave the choice as it was. The UI Control Framework does not use this event itself.
EEventRequestFocus		Request focus. This event is notified by the UI Control Framework during pointer down event processing after EEventPrepareFocusTransition is handled.
EEventPrepareFocusTransition		Prepare focus transition. This event is notified by the UI Control Framework during pointer down event processing if the control does not yet have, but could get, focus.
EEventStateChanged		State changed. This event can be used by a control to report that some piece of internal data has changed, and hence that any observer should be notified accordingly. The UI Control Framework does not use this value itself.
EEventInteractionRefused		Interaction refused. This event is notified by the UI Control Framework during pointer down event processing if the control is dimmed (disabled).

Constructor & Destructor Documentation

MCoeControlObserver ( )

IMPORT_C

MCoeControlObserver

(

)

[protected]

Member Function Documentation

HandleControlEventL ( CCoeControl *, TCoeEvent )

void	HandleControlEventL	(	CCoeControl *	aControl,
			TCoeEvent	aEventType
		)	[pure virtual]

Handles an event from an observed control.

This function is called when a control for which this control is the observer calls CCoeControl::ReportEventL(). It should be implemented by the observer control, and should handle all events sent by controls it observes.

Parameter	Description
aControl	The control that sent the event.
aEventType	The event type.