/*

* Copyright (c) 2007-2008 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:  Class header for CWsfModel

*

*/

#ifndef C_WSFMODEL_H

#define C_WSFMODEL_H

//  EXTERNAL INCLUDES

#include <e32base.h>

//  INTERNAL INCLUDES

#include "wsfsession.h"

#include "wsfbrowserlaunchobserver.h"

#include "wsfscreensaverstateobserver.h"

#include "wsfbrowserlaunchadapter.h"

#include "wsfwlaninfo.h"

//  FORWARD DECLARATIONS

class CWsfAppLauncher;

class MWsfModelObserver;

class CWsfWlanInfoArray;

class MWsfStateChangeObserver;

class CEikonEnv;

class CWsfScreenSaverWatcher;

class CWsfAsyncOperationQueue;

//  CLASS DEFINITION

/**

 * Class acts as an application level model and is also entry point to the 

 * application engine which is implemented as server

 *

 * @lib wsfmodel.lib

 * @since S60 5.0

 */

NONSHARABLE_CLASS( CWsfModel ): public CBase, 

                                public MWsfBrowserLaunchObserver, 

                                public MWsfScreenSaverStateObserver,

    {

    public:     // Constructors and destructor

        /**

        * Factory function.

        * @since S60 5.0

        * @param aObserver The object to notify about server events

        * @param aScreenSaverAware Whether to react to screensaver events

        * @return Model instance

        */

        IMPORT_C static CWsfModel* NewL( MWsfStateChangeObserver& aObserver, 

                                         const TBool aScreenSaverAware );

        /**

        * Factory function.

        * @since S60 5.0

        * @param aObserver The object to notify about server events

        * @param aScreenSaverAware Whether to react to screensaver events

        * @return Model instance

        */

        IMPORT_C static CWsfModel* NewLC( MWsfStateChangeObserver& aObserver, 

                                          const TBool aScreenSaverAware );

        IMPORT_C ~CWsfModel();

    private:    // Constructors

        CWsfModel();

        /**

        * Factory function.

        * @since S60 5.0

        * @param aObserver The object to notify about server events

        * @param aScreenSaverAware Whether to react to screensaver events 

        */

        void ConstructL( MWsfStateChangeObserver& aObserver, 

                         const TBool aScreenSaverAware );

    public:     // New methods

        /**

        * Attach model observer 

        * @since S60 5.0

        * @param aObserver Pointer to the model observer

        */

        IMPORT_C void SetEngineObserver( MWsfModelObserver* aObserver );

        /**

        * Return the latest list of found WLANs. Ownership not passed.

        * @since S60 5.0

        * @return Array of WLANs

        */

        IMPORT_C CWsfWlanInfoArray* GetWlanListL();

		/**

        * Asyncronous request to the server to return wlan list size

        * @since S60 5.2

        * @param aPckg request result

        * @param aStatus The request status object used to contain 

        *        the completion status of the request.

        */

        IMPORT_C void GetWlanListSize( TPckgBuf<TUint>& aPckg, 

                                       TRequestStatus& aStatus );

		/**

        * Asyncronous request to the server to return wlan list

        * @since S60 5.2

        * @param aPckg request result

		* @param aPtr wlan list

        * @param aStatus The request status object used to contain 

        *        the completion status of the request.

        */

        IMPORT_C void GetWlanList( TPckgBuf<TUint>& aPckg, TPtr8& aPtr, 

                                   TRequestStatus& aStatus );

        /**

        * Store active views UID

        * @since S60 5.0

        * @param aActiveViewId Active view's UID

        */

        IMPORT_C void SetActiveViewL( TInt aActiveViewId );

        /**

        * Get UID of the active view

        * @since S60 5.0

        * @return UID of active view

        */

        IMPORT_C TUid ActiveViewL();

        /**

        * Store SSID of active WLAN

        * @since S60 5.0

        * @param aSsid WLAN's name (SSID)

        */

        IMPORT_C void SetObservedWlanL( const TDesC8& aSsid );

        /**

        * Get SSID of active WLAN

        * @since S60 5.0

        * @return Active WLAN's name (SSID) 

        */

        IMPORT_C const TDesC8& ObservedWlan();

        /**

        * Connects to the given WLAN IAP

        * @since S60 5.0

        * @param aIapId WLAN IAP id to connect to.

        */

        /**

        * Asyncronous request to the server to connect to the given WLAN IAP

        * @since S60 5.2

        * @param aPckg request result

        * @param aIapId WLAN IAP id to connect to.

        * @param aPersistence The value of the persistence property

        * @param aStatus The request status object used to contain 

        *        the completion status of the request.

        */

        /**

        * Sets connection result

        * @since S60 5.2

        * @param aResult connection result

        * @param aIapId WLAN IAP

        */

        IMPORT_C void SetConnectResultL( TInt aResult, TUint aIapId );

        /**

        * Disconnects WLAN

        * @since S60 5.0

        */

        IMPORT_C void DisconnectL();

        /**

        * Asyncronous request to the server to disconnect

        * @since S60 5.2

        * @param aPckg request result

        * @param aStatus The request status object used to contain 

        *        the completion status of the request.

        */

        IMPORT_C void Disconnect( TPckgBuf<TBool>& aPckg, 

                                  TRequestStatus& aStatus );

        /**

        * Check if the engine is refreshing

        * @since S60 5.0

        * @return ETrue if first refreshing

        */

        IMPORT_C TBool Refreshing();    

        /**

        * Change refreshing state

        * @since S60 5.0

        * @param aRefreshing Refreshing state

        */

        IMPORT_C void SetRefreshState( TBool aRefreshing );    

        /**

        * Notifies server to start scanning if not scanning already

        * @since S60 5.0

        * @return ETrue on success

        */

        IMPORT_C TBool EnableScanL();

        /**

        * Notifies server to disable scanning

        * However, scanning will continue if some other client 

        * has enabled scanning.

        * @since S60 5.0

        * @return ETrue on success

        */

        IMPORT_C TBool DisableScanL();

        /**

        * Checks if scanning is enabled in the server

        * @since S60 5.0

        * @return EFalse if not scanning

        */

        IMPORT_C TBool IsScanEnabledL();

        /**

        * Continues browsing

        * @since S60 5.0

        */

        IMPORT_C void ContinueBrowsingL();        

        /**

        * Continues browsing (browser launched if needed)

        * @since S60 5.0

        * @param aIapId The IAP id to use with the browser

        */

        IMPORT_C void ContinueBrowsingL( TUint32 aIapId );  

        /**

        * Creates new WLAN access point based on wlaninfo passed as parameter.

        * If aExplicitDefine is ETrue, the connection method is saved to the 

        * destination selected by the user, otherwise it is put into the 

        * Uncategorized folder.

        * @since S60 5.0

        * @param aWlan Reference to Wlan which is used as base 

        *              for new access point

        * @param aExplicitDefine Should be ETrue in case of 

        *                        'Define access point'

        * @return ETrue if access point creation succeeds

        */

        IMPORT_C TBool CreateAccessPointL( TWsfWlanInfo& aWlan,

                                           TBool aExplicitDefine );

        /**

        * Requests a rescan for available wlans

        * @since S60 5.0

        * @return ETrue on success

        */

        IMPORT_C TBool RefreshScanL();

		/**

        * Asyncronous request to the server to make a scan

        * @since S60 5.2

        * @param aPckg request result

        * @param aStatus The request status object used to contain 

        *        the completion status of the request.

        */

        IMPORT_C void RefreshScan( TPckgBuf<TBool>& aPckg, 

                                   TRequestStatus& aStatus );

        /**

        * Closes helper application if it is launched 

        * @since S60 5.2

        * @return ETrue if helper application task was closed

        */

        IMPORT_C TBool CloseHelperApplication();

        /**

        * Launches and helper application to create an accesspoint 

        * @since S60 5.2

        * @param aWlanInfo The WlanInfo object to be passed to the helper app

        */

        IMPORT_C void LaunchHelperApplicationL( TWsfWlanInfo& aWlanInfo );

        /**

        * Cancel notify events from server

        * @since S60 5.0

        */

        IMPORT_C void CancelNotifyEvents();

        /**

        * Request notify events from server

        * @since S60 5.0

        * @param aObserver Instance of MWsfStateChangeObserver to handle events

        */ 

        IMPORT_C void RequestNotifyEventsL( 

                                        MWsfStateChangeObserver& aObserver );

        /**

        * Queries if there is an active WLAN connection.

        * @since S60 5.0

        * @return ETrue if there is an active WLAN connection, 

        *         EFalse otherwise.

        */

        IMPORT_C TBool IsConnectedL();

        /**

        * If there is an active WLAN connection, returns its WLAN info.

        * @since S60 5.0

        * @param aWlanInfo The wlaninfo object to fill

        * @return ETrue if success, EFalse otherwise.

        */

        IMPORT_C TBool GetConnectedWlanDetailsL( TWsfWlanInfo& aWlanInfo );

        /**

        * Asyncronous request to the server to return connected network

        * @since S60 5.2

        * @param aPckg request result

        * @param aWlanInfo The wlaninfo object to fill

        * @param aStatus The request status object used to contain 

        *        the completion status of the request.

        */

        IMPORT_C void GetConnectedWlanDetails( TPckgBuf<TBool>& aPckg,

                                               TWsfWlanInfo& aWlanInfo,

                                               TRequestStatus& aStatus );

        /**

        * Queries whether a connecting process is going on

        * @since S60 5.0

        * @return ETrue if connection is in progress

        */

        inline TBool IsConnecting() const;

        /**

        * Sets connecting status

        * @since S60 5.0

        * @param aIsConnecting The new status of the connecting process

        */

        inline void SetConnecting( TBool aIsConnecting );

        /**

        * Aborts the currently ongoing connecting process 

        * @since S60 5.0

        */

        IMPORT_C void AbortConnectingL();

        /**

        * Aborts the currently ongoing scanning process 

        * @since S60 5.0

        */

        IMPORT_C void AbortScanningL();

        /**

        * Check if Iap Id is valid

        * Leaves with system wide error code if Iap ID is 

        * not valid or checking fails

        * @since S60 5.2

		* @param aIapId IAP id passed as a parameter

        */        

        IMPORT_C void CheckIsIapIdValidL( TUint aIapId ) const;

    public: // from  MWsfBrowserLaunchAdapter        

        /**

        * Launches Browser application using selected iap

        * @since S60 5.0

        * @param aIapId IAP id passed as a parameter

        */

        IMPORT_C void LaunchBrowserL( TUint32 aIapId );

    public:     // From MWsfBrowserLaunchObserver

        /**

        * Called if browser launch succeeds

        * @since S60 5.0

        */

        void BrowserLaunchCompleteL();

        /**

        * Called if browser launch failed

        * @since S60 5.0

        * @param aError System-wide error code    

        */

        void BrowserLaunchFailed( TInt aError );

        /**

        * Called when the previously launched browser exits

        * @since S60 5.0

        */

        void BrowserExitL();

    private:    // from MWsfScreenSaverStateObserver

        /**

        * Called if the status of the screensaver has been changed

        * @since S60 5.0

        * @param aScreenSaverActive Current status of the screensaver

        */

        void ScreenSaverStatusChangedL( const TBool aScreenSaverActive );

    private:  // New methods

        /**

        * Check if there is disk space left 

        * Leaves with KErrDiskFull is space is below CL

        * @since S60 5.0

        */

        void CheckSpaceBelowCriticalLevelL() const;

        /**

        * Check if access point to be created is

        * unknow and Network encryption is WAPI

        * Leaves with KErrWlanProtectedSetupSetupLocked 

        * in the case of unknown WAPI AP.

        * @since S60 5.2

        */        

        void CheckUnknownWapiL( TWsfWlanInfo& aWlan ) const;

    private:    // Data

        /**

        * Reference to the current UI environment (not owned)

        */

        CEikonEnv* iEikEnv;

        /**

        * Reference to the model observer (not owned)

        */

        MWsfModelObserver* iObserver;

        /**

        * Browser launcher class. Owned.

        */

        CWsfAppLauncher* iBrowserLauncher;

        /**

        * Screen saver watcher class. Owned.

        */

        CWsfScreenSaverWatcher* iScreenSaverWatcher;

        /**

        * Client-side handle for server session

        */

        RWsfSession iSession;

        /**

        * Array to store WLAN scan results. Owned.

        */

        CWsfWlanInfoArray* iArray;

        /**

        * UID of active view

        */

        TUid iActiveView;        

        /**

        * Name of currently observed WLAN

        */

        HBufC8* iObservedWlan;

        /**

        * Id of currently connected IAP (if applicable)

        */

        TUint iConnectedIapId;

        /**

        * Refreshing status

        */

        TBool iRefreshing;

        /**

        * Indicates whether connection creation has been started but not

        * finished yet.

        */

        TBool iConnecting;

    };

#include "wsfmodel.inl"

#endif      //  C_WSFMODEL_H

// End of file