/*

* Copyright (c) 2009 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:

*

*/

#ifndef __MENUSRVAPPSCANNER_H__

#define __MENUSRVAPPSCANNER_H__

#include <e32base.h>

#include <apgcli.h>

#include <apgnotif.h>

#include <cenrepnotifyhandler.h>

#include "menuengoperation.h"

#include "mcssatnotifier.h"

#include "menuengfilter.h"

#include "mcsfreespaceobserver.h"

#include "mcsmenuitem.h"

#include "mcsmenunotifier.h"

#include <driveinfo.h>

// FORWARD DECLARATION

class CMenuEng;

class TAppAtributes;

class CMenuSrvMmcHistory;

class CRepository;

class CCenRepNotifyHandler;

class RWidgetRegistryClientSession;

/**

* Application scanner.

* Using AppArc application information, keeps menu application

* items ("menu:application") up-to-date.

*

* Operation is asynchronous (because AppArc startup is asynchronous):

* 1. ConstructL(): invokes iApaLsSession to build app list (async).

* 2. RunL(): App list is complete, this object schedules itself to Engine.

* 3. RunMenuEngOperationL(): The operation is executed by the engine.

* 4. HandleAppListEvent(): change in app list, go back to step 2.

*

* App scanning does the following:

* - Applications present in the system but not appearing in the menu are added

*   to the appropriate folder.

* - Java apps should appear / disappear. TODO not impemented yet!

* - Hide hidden applications, show non-hidden applications (flag "hidden").

* - Hide / show MMC-related items, according to whether MMC is present or not

*   (flag "missing"). Keep an MMC history, purge old MMC-based menu items

*   (== missing menu items whose MMC card has not been seen for long).

* - Observing AppArc (and MMC, and Java, etc etc) to keep the menu data up

*   to date continuously.

*/

NONSHARABLE_CLASS( CMenuSrvAppScanner )

: public CActive, public MMenuEngOperation, public MApaAppListServObserver,

    public MCenRepNotifyHandlerCallback, public MMcsSATNotifierCallback,

    MMcsFreeSpaceObserver

    {

public:     // Constructor

    /**

    * Destructor.

    */

    virtual ~CMenuSrvAppScanner();

    /**

    * Two-phased constructor.

    * @param aEng Engine.

    */

    static CMenuSrvAppScanner* NewL( CMenuEng& aEng );

private:    // Constructors and destructor

    /**

    * Constructor.

    * @param aEng Engine.

    */

    CMenuSrvAppScanner( CMenuEng& aEng );

    /**

    * Second phased constructor.

    */

    void ConstructL();

private:    // from CActive

    /**

    * Request completed, schedule engine operation.

    */

    void RunL();

    /**

    * Cancel request.

    */

    void DoCancel();

    /**

    * Error handling: ignore error.

    * @param aErr Error code.

    */

    TInt RunError( TInt aError );

private:    // from MMcsFreeSpaceObserver

    /**

     * Handle Free Space Event.

     */

    void HandleFreeSpaceEventL();

private:    // from MMenuEngOperation

    /**

    * Execute engine operation:

    * Do the application scan and update menu accordingly.

    */

    void RunMenuEngOperationL();

    /**

    * Error handling: ignore error.

    * @param aErr Error code.

    */

    void CompletedMenuEngOperation( TInt aErr );

private:    // from MApaAppListServObserver

    void HandleAppListEvent( TInt aEvent );

private:    // from MCenRepNotifyHandlerCallback

    /**

    * Called if one of CR keys has changed

    * @param aId  Id of the key that has changed.

    * @param aNewValue  The new value of the key.

    */

    void HandleNotifyString( TUint32 aKey, const TDesC16& aNewValue );

private:    // from MMcsSATNotifierCallback

    /**

    * Inherited from MNotifierMMcsSATNotifierCallbackCallback

    *

    * @since Series 60 3.1

    * @return void

    */

    void SATChangeL();

public:

	/**

	 * Schedule appscanner run.

	 * Self complete active object.

	 */

	void ScheduleScan();

private:    // new methods

    /**

    */

    void HandleLockDeleteFlagUpdateL( const TMenuItem& aItem,TInt aUid );

    /**

    * Updates application's missing attribute.

    * Add new menu item referring to this application.

    * @param aItem menu item.

    */

    void HandleMissingFlagUpdateL( const TMenuItem& aItem );

    /**

    * Updates hidden flag.

    * @param aItem menu item.

    * @param aUid Application's uid.

    * @param aApaItemHidden Application's hidden status from ApaLsSession.

    */

    void HandleHiddenFlagUpdateL(

    		const TMenuItem & aItem,

    		TInt & aAppUid,

    		TBool aApaItemHidden );

    /**

    * Updates native attribute.

    * @param aItem menu item.

    * @param aUid Application's uid.

    */

    void HandleNativeAttrUpdateL(

    		const TMenuItem& aItem,

    		TInt aUid );

    /**

    * Updates mmc attribute.

    * @param aItem menu item.

    * @param aUid Application's uid.

    * @param aMmcId MMC ID of currently inserted MMC, or 0.

    */

    void HandleMmcAttrUpdateL(

    		const TMenuItem& aItem,

    		TInt aUid,

    		TUint aMmcId );

    /**

    */

    TBool IsInRomL( TInt aUid );

    /**

    */

    void GetCrItemsL( RArray<TAppAtributes>& aArray );

    /**

    */

    void ParseUidsL( const TDesC& aHiddenApplications,

                                        RArray<TAppAtributes>& aArray );

    /**

    */

    void GetApaItemsL( RArray<TAppAtributes>& aArray );

    /**

    */

    void SetHidden( const TDesC& aHiddenAppUid,

                                RArray<TAppAtributes>& aArray );

    /**

    */

    void GetMcsAppItemsL( RArray<TMenuItem>& aArray);

    /**

    */

    void GetMcsAppItemsL( TBool aLegacy, const TUint aUid,

                                        RArray<TMenuItem>& aArray);

    /**

    * New application is found, no menu item refers to it.

    * Add new menu item referring to this application.

    * @param aUid Application capability.

    * @param aCurrentMmcId MMC ID of currently inserted MMC, or 0.

    */

    void AddAppItemL(

        TUint aUid,

        TUint aCurrentMmcId );

    TInt CreateInstallFolderL( TUint aUid );

    /**

    * @param aAppUid application UID

    * @return TBool

    */

    TBool IsMidlet( const TUid aAppUid );

    /**

    * Find menu folder which has the specified "applicationgroup_name"

    * attribute. If no such folder exists, create.

    * @param aAppGroupName value of the "applicationgroup_name" attribute

    * @param aFolderId Folder ID.

    */

    void AppGroupFolderL( const TDesC& aAppGroupName, TInt& aFolderId );

    /**

    * Find the default folder (folder having attribute 'default="1"').

    * If not found, return 0.

    * @param aFolderId Dedault folder or 0.

    */

    void DefaultFolderL( TInt& aFolderId );

    /**

    * Make sure that folder is writable (remove "lock_moveinto").

    * @param aFolder Folder id.

    */

    void EnsureFolderWritableL( TInt aFolder );

    /**

    * Handle items are in the menu but no corresponding app is present:

    * - Items that are on a recently used MMC are get "missing" flag but kept.

    * - Items that are not on MMC or the MMC is not recently used, are

    *   removed form the menu.

    * @param aItems Missing items.

    */

    void HandleMissingItemsL( const RArray<TMenuItem>& aItems );

    /**

    * Updates objects flags to aFlagPresent if needed.

    * @param aFlagValue value for flag.

    * @param aItem menu item.

    * @param aFlag menu item's flag.

    * @param aEvent menu item's event for engine.

    */

    void SetObjectFlagsL(

    		TBool aFlagValue,

    		const TMenuItem& aItem,

    		const TMenuItem::TFlags& aFlag,

    		const RMenuNotifier::TEvent& aEvent = RMenuNotifier::EItemAttributeChanged );

    /**

    * Check currently inserted MMC card, update and save MMC history.

    * @return Current MMC id, or 0 if no MMC is inserted.

    */

    TUint UpdateMmcHistoryL();

    /**

    * Get current MMC id. 0 if no MMC is inserted, or in case of any errors.

    * @return Current MMC id, or 0.

    */

    TUint CurrentMmcId() const;

    /**

    * Check if file is on given default drive type.

    * @param aFileName File name.

    * @return ETrue if aFileName is on given default drive type.

    */

    TBool IsFileInDrive(

			const TDesC& aFileName,

			const DriveInfo::TDefaultDrives& aDefaultDrive ) const;

    /**

    * Check if application is installed on given drive type.

    * @param aUid app uid.

    * @param aDefaultDrive drive type.

    * @return ETrue if app is installed on given drive type.

    */

	TBool IsAppInDrive(

			const TUid aUid,

			const DriveInfo::TDefaultDrives& aDefaultDrive ) const;

    /**

    * Check if application is installed on MMC.

    * @param aUid app uid.

    * @return ETrue if app is installed on MMC.

    */

    TBool IsMmcApp( const TUid aUid ) const;

    /**

    * Check if application is installed on mass storage.

    * @param aUid app uid.

    * @return ETrue if app is installed on mass storage.

    */

    TBool IsMassStorageApp( const TUid aUid ) const;

    /**

    * Check if drive's status is EDriveInUse.

    * @param aDefaultDrive default drive type.

    * @return ETrue if drive is in use.

    */

    TBool IsDriveInUse(

    		const DriveInfo::TDefaultDrives& aDefaultDrive );

    /**

    TODO

    */

    void HideItemIfPresentL( TInt aFolder, TInt aId, const TDesC& aUid, TBool aWasHidden );

    /**

    TODO

    */

    void GetHiddenFlagAndUidL( TInt aId, TBool& aHidden, TPtrC& aUidStr );

    /**

    TODO

    */

    void SetHiddenFlagL( TInt aId, TBool aWasHidden, TBool aHide );

    /**

    TODO

    */

    void ValidateLinkUidL( TInt aFolder, TInt aId, const TDesC& aUidStr );

    /**

    TODO

    */

    void UpdateLinkL( TInt aId, TBool aExists, TBool aShowItem, TBool aMissingItem );

    /**

    TODO

    */

    void ValidateLinkRefIdL( TInt aId, const TDesC& refIdStr );

    /**

    TODO

    */

    void ValidateLinkL( TInt aFolder, TInt aId );

    /**

    TODO

    */

    void UpdateApplicationItemL(

    		RArray<TMenuItem>& aMcsItems,

            const TAppAtributes& aApaItem,

            TUint aMmcId,

            TBool isLegacy );

    /**

    TODO

    */

    void UpdateApplicationItemsL();

    /**

    TODO

    */

    void UpdateApplicationWithHideIfInstalledItemsL();

    /**

    TODO

    */

    void UpdateLinkItemsL();

private:    // data

    CMenuEng& iEng ; ///< Engine.

    RApaLsSession iApaLsSession; ///< AppArc session. Own.

    CApaAppListNotifier* iNotifier; ///< Change notifier. Own.

    CMenuSrvMmcHistory* iMmcHistory; ///< MMC history. Own.

    RFs iFs; ///< File Server Session. Own.

	RWidgetRegistryClientSession iWidgetSession;///<Own.

    /*

    * Sat change notifier. Own

    */

    CMcsSatNotifier* iMcsSatNotifier;

    /*

    * Central repository session

    */

	CRepository* iCenRepSession;

    /*

    * Central repository change handler for Hidden Apps

    */

    CCenRepNotifyHandler* iCenRepNotifyHandlerHiddenApps;

    /*

    *Central repository change handler for Control Panel Hidden Apps

    */

    CCenRepNotifyHandler* iCenRepNotifyHandlerCPHiddenApps;

    /*

    *Central repository change handler for Control Panel Hidden Folders

    */

    CCenRepNotifyHandler* iCenRepNotifyHandlerCPHiddenFolders;

    /*

    * Free space observer. Own.

    */

    CMcsFreeSpaceObserver* iFreeSpaceObserver;

    TBool iOpStatus;

    };

class TAppAtributes

    {

public:

    /*

    *

    */

    TAppAtributes ( TUint aUid, TBool aHidden /*,TBool aMissing*/);

    /*

    *

    */

    TUint GetUid() const;

    /*

    *

    */

    TBool IsHidden() const;

    /*

    *

    */

    void SetHidden( TBool aHidden );

    /*

    *

    */

    static TBool MatchItems(const TAppAtributes& item1,

                                        const TAppAtributes& item2);

private:    // data

    TUint iUid;

    TBool iHidden;

    };

#endif // __MENUSRVAPPSCANNER_H__