/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

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

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   This is the header file for the CClockAppUi class.

*

*/

#ifndef __CLOCK_APPUI_H__

#define __CLOCK_APPUI_H__

// System includes

#include <aknViewAppUi.h>

#include <AknTabObserver.h>

#include <iaupdateobserver.h>     

#include <iaupdate.h>

#include <iaupdateparameters.h>

#include <iaupdateresult.h>

// User includes

#include "clkcommon.h"

// Forward declarations

class CEnvironmentChangeNotifier;

class CAknNavigationControlContainer;

class CAknTabGroup;

class CAknNavigationDecorator;

class CIAUpdate;

class CIAUpdateParameters;

// Class declaration

/**

* @class CClockAppUi

* @brief The CAknViewAppUi inheriting class.

* @exe clock.exe

*/

class CClockAppUi : public CAknViewAppUi,

                    public MAknTabObserver,

                    public MIAUpdateObserver

	{

	public:            // Constructor and destructor

		/**

		* @brief C++ default constructor

		*/

	    CClockAppUi();

        /**

        * @brief Destructor.

        */

        ~CClockAppUi();

	public:            // From base classes

		/**

		* @brief From CAknViewAppUi. Handles menu commands.

		* @param aCommandId The id of the command to be handled.

		*/

		void HandleCommandL( TInt aCommandId );

		/**

        * @brief From MAknTabObserver. Called when tab is changed.

        * @param aIndex The index of the Active tab.

        * @see MAknTabObserver

        */

		void TabChangedL( TInt aIndex );

		/**

		* @brief From CCoeAppUi. Called when a key is pressed.

		* @param aKeyEvent Encapsulates the key event.

		* @param aType The type of the event.

		* @return TKeyResponse Return if the event was handled or not.

		* @see CCoeAppUi

		*/

		TKeyResponse HandleKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType );

		/**

		* @brief From CAknAppUi. Called for all window server events.

		* @param aForeground ETrue if the app is being brought to the foreground. EFalse otherwise.

		*/

		void HandleForegroundEventL( TBool aForeground );

		/**

		* @brief From MIAUpdateObserver.

		* @param aErrorCode The error code of the observed update operation.

		*                  KErrNone for successful completion,otherwise a system wide error code.

		* @param aAvailableUpdates Number of the updates that were found available.

		*/

		void CheckUpdatesComplete( TInt aErrorCode, TInt aAvailableUpdates );

		/**

		* @brief From MIAUpdateObserver.

		* @param aErrorCode The error code of the completed update operation.

		*                   KErrNone for successful completion, 

		*                   otherwise a system wide error code.

		* @param aResultDetails Details about the completed update operation.

		*                       Ownership is transferred.

		*/

		void UpdateComplete( TInt aErrorCode, CIAUpdateResult* aResultDetails );

		/**

		* @brief From MIAUpdateObserver.

		* @param aErrorCode The error code of the observed query operation.

		*                   KErrNone for successful completion, 

		*                   otherwise a system wide error code.

		* @param aUpdateNow ETrue informs that an update operation should be started.

		*                   EFalse informs that there is no need to start an update

		*                   operation.

        */

		void UpdateQueryComplete( TInt aErrorCode, TBool aUpdateNow );

	public:            // New functions

	    /**

	    * @brief Handles the environment changes.

	    * @param aEnvChanged Of type TClockEnvChanged.

	    */

	    void HandleEnvChangeL( TClockEnvChanged aEnvChanged );

	    /**

        * @brief Sets the main view title pane text.

        * @param aResourceId Resource from which the title pane text is read.

        */

	    void SetTitlePaneTextL( TInt aResourceId );

	    /**

        * @brief Sets or Resets the appHidden flag.

        * @param aAppHidden ETrue to hide, else EFalse.

        */

        void SetAppHidden( TBool aAppHidden );

        /**

        * @brief Returns the value of iAppHidden

        * @return TBool ETrue if the app was Exit hidden.

        */

        TBool IsAppExitHidden();

        /**

        * @brief Hides or Un-hides the navigation pane.

        * @param aVisible ETrue, pane will be visible. EFalse will be hidden.

        * @param aViewId The ID used to activate the corresponding tab.

        */

        void MakeNavigationPaneVisible( TBool aVisible, TInt aViewId );

        /**

        * @brief Handles IAD related updates.

        */

        void HandleIADUpdateL();

	private:           // New functions

		/**

		* @brief Symbian OS constructor. Performs the second phase of construction. May leave.

		*/

		void ConstructL();

		/**

		* @brief Callback function for environment change notifications.

		* @param aPtr The TAny* to 'this'.

		* @return TInt Symbian OS error code.

		*/

		static TInt NotifierCallbackL( TAny* aPtr );

		/**

        * @brief Opens the date and time settings view

        */

		void OpenSettingsViewL();

		/**

        * @brief Resets the state of the application to what it was initially.

        */

        void ResetToInitialStateL();

        /**

        * @brief Sets the navigation pane with tabs.

        */

        void SetupNavigationPaneL();

	private:           // Data

	    /**

	    * @var iEnvChangeNotifier

	    * @brief An object of CEnvironmentChangeNotifier. Used to get notifications for changes in

	    *        environment.

	    */

	    CEnvironmentChangeNotifier*         iEnvChangeNotifier;

	    /**

        * @var iAppHidden 

        * @brief ETrue if app is hidden in the background.

        */

        TBool                               iAppHidden;

        /**

        * @var iNaviPane

        * @brief The navigation pane decorator.

        */

        CAknNavigationControlContainer*     iNaviPane;

        /**

        * @var iTabGroup

        * @brief The tab group.

        */

        CAknTabGroup*						iTabGroup;

        /**

        * @var iNavigationDecorator

        * @brief The navigation decorator.

        */

        CAknNavigationDecorator*			iNavigationDecorator;

        /**

        * @var iIADUpdateFlag

        * @brief the flag is true for the first time and it is made false after IAD updates

        *        And it is made true again while exiting.

        */

        TBool                               iIADUpdateFlag;

        /**

        * @var iUpdate

        * @brief Object of CIAUpdate class.

        */

        CIAUpdate*                          iUpdate;

        /**

        * @var iParameters

        * @brief Object of CIAUpdateParameters class.

        */

        CIAUpdateParameters*                iParameters;

	};

#endif 		// __CLOCK_APPUI_H__

// End of file