MCoeControlObserver in Application Framework CONE

class MCoeControlObserver;

Description

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

Members

Defined in MCoeControlObserver:
EEventInteractionRefused, EEventPrepareFocusTransition, EEventRequestCancel, EEventRequestExit, EEventRequestFocus, EEventStateChanged, HandleControlEventL(), MCoeControlObserver(), MCoeControlObserver_Reserved1(), MCoeControlObserver_Reserved2(), TCoeEvent

protected: IMPORT_C MCoeControlObserver();

Description

virtual void HandleControlEventL(CCoeControl *aControl, TCoeEvent aEventType)=0;

Description

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.

Parameters

`CCoeControl *aControl`	The control that sent the event.
`TCoeEvent aEventType`	The event type.

private: virtual IMPORT_C void MCoeControlObserver_Reserved1();

Description

private: virtual IMPORT_C void MCoeControlObserver_Reserved2();

Description

TCoeEvent

Description

Observer event types.

`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).

Class `MCoeControlObserver`

Description

Members

Construction and destruction