/*

* 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: casrvappscanner.h

*

*/

#ifndef CASRVAPPSCANNER_H_

#define CASRVAPPSCANNER_H_

#include <e32base.h>

#include <apgcli.h>

#include <apgnotif.h>

#include <driveinfo.h>

#include <usif/scr/scr.h>

#include "cainstallnotifier.h"

#include "castorage_global.h"

class CCaSrvMmcHistory;

class CCaInnerEntry;

class CCaStorageProxy;

class CCaSrvEngUtils;

/**

 * Application scanner.

 * Using AppArc application information, keeps menu application

 * items 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 - appscanner update entries with application.

 * 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.

 * - 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, etc etc) to keep the menu data up

 *   to date continuously.

 */

NONSHARABLE_CLASS( CCaSrvAppScanner ) : public CActive

    {

public:

    // Constructor

    /**

     * Destructor.

     */

    virtual ~CCaSrvAppScanner();

    /**

     * Two-phased constructor.

     * @param aCaStorageProxy storage.

     * @param aUtils storage utils.

     */

    static CCaSrvAppScanner* NewL( CCaStorageProxy& aCaStorageProxy,

            CCaSrvEngUtils& aUtils );

private:

    // Constructors and destructor

    /**

     * Constructor.

     * @param aCaStorageProxy storage.

     * @param aUtils storage utils.

     */

    CCaSrvAppScanner( CCaStorageProxy& aCaStorageProxy,

            CCaSrvEngUtils& aUtils );

    /**

     * Second phased constructor.

     */

    void ConstructL();

private:

    // from CActive

    /**

     * Request completed, schedule engine operation.

     */

    void RunL();

    /**

     * Cancel request.

     */

    void DoCancel();

    /**

     * Error handling: ignore error.

     * @param aError Error code.

     */

    TInt RunError( TInt aError );

private:

    // new methods

    /**

     * Gets collectionId of download collection.

     * @result id of download collection.

     */

    TInt GetCollectionDownloadIdL();

    /**

     * Gets collectionId of all collection.

     * @result id of all collection.

     */

    TInt GetAllCollectionIdL();

    /**

     * Adds application entry to downloaded collection.

     * @param aEntryId application entry id.

     */

    void AddEntryToDownloadedCollectionL( TInt aEntryId );

    /**

     * Add application entry to predefined collection.

     * @param aEntry application entry.

     * @param aUpdate is entry updated by a client.

     */

    void AddEntryToPredefinedCollectionL( CCaInnerEntry* aEntry,

            TBool aUpdate = EFalse );

    /**

     * Create predefined collection.

     * @param aGroupName group name.

     * @result id of a newly created collection.

     */

    TInt CreatePredefinedCollectionL( const TDesC& aGroupName );

    /**

     * Add collection to all collection.

     * @param aCollectionId collection id to add.

     */

    void AddCollectionToAllCollectionL( TInt aCollectionId );

    /**

     * Removes application entry from downloaded collection.

     * @param aEntryId application entry id.

     */

    void RemoveEntryFromDownloadedL( TInt aEntryId );

    /**

     * Updates application's removable and visible flags.

     * @param aItem menu item.

     * @return ETrue if flags were updated.

     */

    /**

     * Removes application unninstall flag.

     * @param aItem menu item.

     * @return ETrue if flags were updated.

     */

    TBool RemoveUninstallFlagL( CCaInnerEntry* aItem );

    /**

     * Updates application's missing and visible flags.

     * @param aItem menu item.

     * @return ETrue if flags were updated.

     */

    /**

     * Updates visible flag.

     * @param aItem menu item.

     * @return ETrue if visible flag was updated.

     */

    TBool HandleVisibleFlagUpdate( CCaInnerEntry* aItem );

    /**

     * Updates used flag.

     * @param aItem menu item.

     * @return ETrue if used flag was updated.

     */

    TBool HandleUsedFlagUpdate( CCaInnerEntry* aItem );

    /**

     * Updates mmc attribute.

     * @param aItem menu item.

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

     * @return ETrue if mmc attribute was updated.

     */

    /**

     * Get applications from AppArc.

     * @param aArray RArray with applications' uids.

     */

    void GetApaItemsL( RArray<TUint>& aArray );

    /**

     * Remove application from array (found in AppArc).

     * @param aArray RArray with applications' uids.

     * @param aUid uid of application to remove.

     */

    void RemoveApp( RArray<TUint>& aArray, TInt32 aUid );

    /**

     * Get applications from CaStorage.

     * @param aArray RPointerArray with CCaInnerEntries.

     * contains applications.

     */

    void GetCaAppEntriesL( RPointerArray<CCaInnerEntry>& aArray );

    /**

     * Remove sat application from array(found in CaStorage).

     * @param aArray RPointerArray with CCaInnerEntries

     * contains applications.

     */

    void RemoveSatAppL( RPointerArray<CCaInnerEntry>& aArray );

    /**

     * Ensure that HsApplicaiton is not visible: Add HsApplication.

     * as hidden to CaStorage or remove HsApplication entry

     * from array (found in CaStorage).

     * @param aArray RPointerArray with CCaInnerEntries

     * contains application.

     */

    void HandleHsAppEntryL( RPointerArray<CCaInnerEntry>& aArray );

    /**

     * Get application with specified uid from CaStorage.

     * @param aUid RPointerArray with CCaInnerEntries.

     * @param aArray RPointerArray with CCaInnerEntries

     * contains application.

     */

    void GetCaAppEntriesL( TInt aUid, RPointerArray<CCaInnerEntry>& 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.

     * @return added item id

     */

    TInt AddAppEntryL( TUint aUid, TUint aCurrentMmcId );

    /**

     * Set information from TApaAppInfo to entry.

     * @param aEntry CCaInnerEntry with application.

     * @return ETrue if app info was updatedd

     */

    TBool SetApaAppInfoL( CCaInnerEntry* aEntry );

    /**

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

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

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

     *   removed from the menu.

     * @param aItems Missing items.

     */

    void HandleMissingItemsL( RPointerArray<CCaInnerEntry>& aCaEnties );

    /**

     * Set "missing" flag.

     * @param aEntry entry.

     */

    void SetMissingFlagL( CCaInnerEntry* aEntry );

    /**

     * @param aEntry entry.

     */

    /**

     * 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;

    /**

     * @param aDefaultDrive default drive type

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

     */

            const DriveInfo::TDefaultDrives& aDefaultDrive ) 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 );

    /**

     * Add application to storage or update entry if necessary.

     * @param aCaEnties with applications from storage.

     * @param aAppUid application uid.

     * @param aMmcId unique mmc id.

     */

    void UpdateApplicationEntryL( RPointerArray<CCaInnerEntry>& aCaEnties,

            TUint aAppUid, TUint aMmcId );

    /**

     * Update entry from storage.

     * @param aEntry application entry.

     * @param aMmcId unique mmc id.

     * @param aAlwaysUpdate item always should be updated.

     */

    void UpdateAppEntryL( CCaInnerEntry* aEntry,

            TUint aMmcId,

            TBool aAlwaysUpdate = EFalse );

    /**

     * Get all applications from storage and visible from apparc

     * and update if necessary.

     */

    void UpdateApplicationEntriesL();

    /**

     * Make not empty collections with not hidden apps visible.

     */

    void MakeNotEmptyCollectionsVisibleL();

    /**

     * Make collection visible if has visible entry.

     * @param aEntry application entry.

     */

    void MakeCollectionVisibleIfHasVisibleEntryL( CCaInnerEntry* aEntry );

    /**

     * Adds or updates component id attribute in entry based on SCR provided data

     * @param aEntry entry being updated with component id attribute.

     * @return ETrue when component id attribute of the entry has been added or changed.

     */

private:

    // data

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

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

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

    CCaStorageProxy& iCaStorageProxy; ///< Not own

    CCaSrvEngUtils& iSrvEngUtils; ///< Not own

    TInt iCollectionDownloadId;

    TInt iAllCollectionId;

CA_STORAGE_TEST_FRIEND_CLASS    (T_casrvAppScaner)

    };

#endif /* CASRVAPPSCANNER_H_ */