/*

* Copyright (c) 2006 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:  SUPL Settings UI Engine. The engine is resposible for handling

*                all the UI components required for SUPL Settings UI. In addition

*                to this it also is responsible for interacting with the SUPL

*                Settings API

*

*/

#ifndef C_LOCSUPLSETTINGSUIENGINE_H_

#define C_LOCSUPLSETTINGSUIENGINE_H_

// System Includes

#include <e32base.h>

#include <agentdialog.h>    // for RGenConAgentDialogServer

// User Includes

#include "locsuplsettingsadapterobserver.h"

// Forward Declaration

class CLocSUPLSettingsAdapter;

class MLocSUPLSettingsUiEngObserver;

class CTextResolver;

class CAknGlobalConfirmationQuery;

class CServerParams;

class CTriggerParams;

class CLocSUPLServerEditor;

class MSuplServerEditorObserver;

class MLocSUPLSettingsSessionObserver;

// Class Declaration

/**

 * Engine for SUPL Settings UI

 *

 * Engine class for SUPL Settings UI. It is responsible for interacting with the 

 * SUPL Settings API. Further, it handles all commands for SUPL settings UI. The

 * Engine launches all the dialogs associated with configuring the SUPL Settings.

 * It further observers the SUPL Settings UI for any changes to the Settings

 * values.

 */

class CLocSUPLSettingsUiEngine : public CBase, public MLocSUPLSettingsAdapterObserver

    {

    public:

        /**

         * Two-phased constructor

         *

         * @param  aObserver                 Referenece to the Engine observer

         * @return CLocSUPLSettingsUiEngine* Reference to the object created

         */

        static CLocSUPLSettingsUiEngine* NewL( 

                            MLocSUPLSettingsUiEngObserver&      aObserver );

        /**

         * Two-phased constructor. Leaves the object on the Cleanup stack

         *

         * @param  aObserver                 Reference to the Engine observer

         * @return CLocSUPLSettingsUiEngine* Reference to the object created

         */

        static CLocSUPLSettingsUiEngine* NewLC( 

                            MLocSUPLSettingsUiEngObserver&      aObserver );

        /**

         * Initializes the Settings Engine. This is an asynchronous call the 

         * completion of which is communicated through the observer

         * 

         */

        void Initalize();

        /**

         * Destructor.

         */

        virtual ~CLocSUPLSettingsUiEngine();

        /** 

         * Opens the exisitng server with its attributes

		 *

		 */

		void EditServerL( TBool iIsEditable, TInt64 aSlpId );

        /** 

         * returns exisitng server entries count

		 *

		 */

		TInt SlpCount();

        /**

		 * Closes the running Settings UI prematurely.

		 */

		void Close();

        /**

		 * Creates a new server entry in Supl Settings.

		 */

		void AddNewServerL( 

		        const TDesC& aServerAddress,

		        const TDesC& aIapName,

		        const TBool aUsageInHomeNw

		);

	    /**

	     * Deletes server entry from SUPL settings storage.  

	     */

	    void RemoveServerL(

	    		const TInt64 aSlpId

	    );

	    /**

	     * Sets the priority of the server to the specified priority.  

	     */

		void ChangePriorityL(

		        TInt64 aSlpId, 

		        TInt aPriority,

		        TBool aDirection

		);

	    /**

	     * Gets properties of all servers from SUPL settings storage.  

	     * This method retrieves all properties for each server.

	     */

		void GetAllSlpL(

		        RPointerArray<CServerParams>& aParamValues

		) const;

	    /**

	     * Gets all properties of server from SUPL settings storage

	     * based on SLP identification.  

	     */

		void GetSlpInfoFromIdL(

	            const TInt64 aSlpId, 

	            CServerParams *aParamValues

		) const;

	    /**

	     * Sets the server address parameter in server settings 

	     */

	    void SetServerAddressL( 

	            const TInt64 aSlpId, 

	            const TDesC& aServerAddress

	    );

	    /**

	     * Obtains the server address parameter from server settings.  Client

	     * has to allocate memory for server address parameter.

	     */

	    void GetServerAddressL( 

	            TInt64 aSlpId, 

	            TDes& aServerAddress

	    ) const;

	    /**

	     * Sets the IAP Name in server parameters. IAP name refers to 

	     * the access point which is used to access the HSLP over the internet. 

	     */

	    void SetIapNameL( 

	            const TInt64 aSlpId, 

	            const TDesC& aIapName

	    );

	    /**

	     * Sets the parameter which indicates whether server

	     * can be used for SUPL session or not. 

	     */

	    void SetServerEnabledFlagL(

	            const TInt64 aSlpId, 

	            const TBool aEnable 

	    ) const;

	    /**

	     * Obtains the parameter which indicates whether server

	     * can be used for SUPL session or not. 

	     */

	    void GetServerEnabledFlagL(

	            const TInt64 aSlpId, 

	            TBool& aEnable 

	    ) const;

	    /**

	     * Sets the parameter which indicates whether server

	     * can be used out side home network or not. 

	     */

	    void SetUsageInHomwNwFlagL(

	            const TInt64 aSlpId, 

	            const TBool aHomeNwFlag 

	    );

	    /**

	     * Sets the parameter which indicates whether server

	     * details are editable or not. 

	     */ 

		void SetEditableFlagL( 

	            const TInt64 aSlpId, 

	            const TBool aEditFlag 

	    ) const;

	    /**

	     * Gets the parameter which indicates whether server

	     * details are editable or not. 

	     */ 

	    void GetEditableFlagL( 

	            const TInt64 aSlpId, 

	            TBool& aEditFlag 

	    ) const;

	    /**

	     * Obtains the count of active Supl sessions

	     * 

	     */  

	    void GetActiveSessionsCountL( TInt& aAccessPointCount );

	    /**

	     * Gets properties of all triggers from SUPL settings storage.  

	     * This method retrieves all properties for each trigger.

	     */

		void GetTriggerParamsL(

		        RPointerArray<CTriggerParams>& aParamValues

		) const;

	    /**

	     * Gets properties of all triggers from SUPL settings storage.  

	     * This method retrieves all properties for each trigger based on session id.

	     */

		void GetTriggerParamsL(  TInt64 aSessionId, 

		        CTriggerParams*& aTrigger

		) const;

	   /**

	     * Open the Active Session for the specified session id.

	     * 

	     */  

	    void OpenSessionL( TInt64 aSessionId );

	   /**

	     * Deletes a trigger session based on session id

	     * 

	     */  

	    void RemoveTriggerSessionL( TInt64 aSessionId ) const;

	   /**

	     * Deletes a trigger sessions based on session ids

	     * 

	     */  

	    void RemoveTriggerSessionsL( RArray< TInt64 >& aSessionIdList ) const;

	   /**

	     * Deletes all the trigger sessions

	     * 

	     */  

	    void RemoveAllTriggerSessionsL( ) const;

	   /**

	     * Changes the notification status of an active session based on session id

	     * 

	     */  

	    void ChangeNotificationStatusL( TInt64 aSessionId, TBool aTriggerNotificationStatus ) const;

	   /**

	     * Set the Observer for the specific Session

	     * 

	     */  

	    void SetSessionObserver( MLocSUPLSettingsSessionObserver* aObserver ) const;

	   /**

	     * Remove the Session observer

	     * 

	     */  

	    void RemoveSessionObserver( ) const;

        /**

         * Sets value of highlighted AP

         */

        void SetTempAPValue( TUint32 aAccessPoint);

        /**

         * Generates IMSI address

         */

        void GenerateHslpAddressFromImsi(TDes& aIMSIAddress );

	public:     		

		/**

		 * Inherited from MLocSUPLSettingsAdapterObserver

		 */

		void HandleSuplSettingsChangeL( TLocSUPLSettingsEvent aEvent );

    private:

        /**

         * C++ constructor.

         */

        CLocSUPLSettingsUiEngine( MLocSUPLSettingsUiEngObserver&  aObserver );

        /**

         * Second Phase constructor

         */

        void ConstructL();

        /**

         * Obtains the index UID corresponding to the Access point name

         *

         * @param   aIAPName     Access point name

         * @return  TUint       UID corresponding to the AP Name. Zero if 

         *                      the name does not exist

         */

        TUint ConvertIAPNameToIdL( const TDesC&      aIAPName );

        /**

         * Displays an Error note

         *

         * @param aError Error ID

         */

        void DisplayErrorL( TInt aError );

        /**

         * Returns value of last highlighted AP

         */

        TUint32 GetTempAPValue();

    private:

        /**

         * Reference to the Engine Observer

         */

        MLocSUPLSettingsUiEngObserver&	iObserver;

        /**

         * SUPL Settings API Adapter

         * Owns

         */

        CLocSUPLSettingsAdapter*       	iSUPLSettingsAdapter;

        /**

         * Temporary Buffer for returning values to the Accessor 

         * functions. The accessor expects a 16 bit variant of the descriptor

         * Owns

         */

        HBufC16*                		iConversionBuffer;

        /**

         * Pointer to the Conversion Buffer

         */

        TPtr16                  		iConversionBufferPtr;

        /**

         * Temporary Buffer to hand over to the UI components and

         * access data from the Settinga API

         * Owns

         */

        HBufC*                  		iSettingsBuffer;

        /**

         * Standard Text resolver for converting Error codes to 

         * standard texts

         */

        CTextResolver*          		iTextResolver;

        /**

         * Selected IAP ID

         */

        TUint32                     	iSelectedIap;

        /**

         * Launch Paramters

         */

        TInt                        	iLaunchParams;

        /**

         * Flag to denote whether access point selection requested or not

         */

        TBool                   		iRequestIapSelect;

        /**

         * Supl Server Editor 

         * Owns

         */

        CLocSUPLServerEditor*			iEditorDlg;

        /*

         * Current highlighted AP

         * Set to -1 if no changes made in edit dialog box, Set to Uid of access 

         * point if changes made 

         */

        TUint32 iTempAP;

    };

#endif // C_LOCSUPLSETTINGSUIENGINE_H_