1 /*

     2 * Copyright (c) 2002-2005 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Interface for handling control's state change.

    15 *

    16 */

    17 

    18 

    19 

    20 #if !defined(__AKNEDSTSOBS_H__)

    21 #define __AKNEDSTSOBS_H__

    22 

    23 // FORWARD DECLERATIONS

    24 class CAknEdwinState;

    25 

    26 

    27 // CLASS DECLERATION

    28 /**

    29 * Interface for handling control's state change.

    30 * 

    31 * @since Series 60 0.9

    32 */

    33 class MAknEdStateObserver

    34 	{

    35 public:

    36 	/** 

    37     * Observer event types.

    38     */

    39 	enum EAknEdwinStateEvent

    40         {

    41         /** The state has been updated */ 

    42         EAknEdwinStateEventStateUpdate, 

    43         /** The input mode has been updated */     

    44         EAknEdwinStateInputModeUpdate,

    45         /** The case mode has been updated */   

    46         EAknEdwinStateCaseModeUpdate,

    47         /** The local language has been updated */    

    48         EAknEdwinStateLocalLanguageUpdate, 

    49         /** The flags have been updated */  

    50         EAknEdwinStateFlagsUpdate,

    51         /** The edwin state needs to be sync'ed */

    52         EAknSyncEdwinState,

    53         /** Cursor position has changed in editor */

    54         EAknCursorPositionChanged,

    55         /** VKB/HW activation request */

    56         EAknActivatePenInputRequest,

    57         /** Prompt Text has changed */

    58         EAknEdwinStatePromptUpdate,

    59         /** editor is destroyed */

    60         EAknEdwinDestroy,

    61         /** VKB/HW close request */

    62         EAknClosePenInputRequest

    63         };

    64 public:

    65 	/**

    66     * Handles an state event from a observed control.

    67     * Pure virtual function that is called when a control, for which this

    68     * control is the observer, calls @c ReportAknedstateEventL().

    69     * It should be implemented by the observer control and should handle all

    70     * state events sent by controls it observed. 

    71     * @param aAknEdwinState The control that sent the event.

    72     * @param aEventType The event type defined in @c EAknEdwinStateEvent.

    73     */

    74 	virtual void HandleAknEdwinStateEventL(CAknEdwinState* aAknEdwinState,

    75 		EAknEdwinStateEvent aEventType) = 0;

    76 	};

    77 

    78 #endif