tstaskmonitor/server/inc/tsfswdatalist.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 23 Jun 2010 18:33:40 +0300
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/*
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Non-closeable app list class
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 *
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*/
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#ifndef TSFSWDATALIST_H
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#define TSFSWDATALIST_H
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#include <e32base.h>
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#include <tswindowgroupsobserver.h>
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#include "tsfswentry.h"
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#include "tsdataobserver.h"
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class CApaWindowGroupName;
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class CFbsBitmap;
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/**
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 * Engine's data list.
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 */
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NONSHARABLE_CLASS( CTsFswDataList ) : public CTsWindowGroupsObserver
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    {
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public:
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    /**
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     * Two-phased constructor.
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     */
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    static CTsFswDataList* NewL(MTsResourceManager& resources, 
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                                MTsWindowGroupsMonitor &monitor, 
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                                MHsDataObserver& observer);
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    /*
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     * Destructor
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     */
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    ~CTsFswDataList();
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private:
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    /**
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     * Constructor.
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     */
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    CTsFswDataList(MTsResourceManager& resources,
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                   MTsWindowGroupsMonitor &monitor, 
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                   MHsDataObserver& observer);
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    /**
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     * Performs 2nd phase construction.
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     */
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    void ConstructL();
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public:
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    /**
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     * Returns a reference to the current content.
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     * Also performs sanity checks, e.g. associates application icons
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     * when no screenshot has been received.
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     * @return  ref to content array
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     */
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    const RTsFswArray& FswDataL();
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    /**
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     * Interface implementation
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     * @see MTsWindowGroupsObserver HandleWindowGroupChanged
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     */
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    void HandleWindowGroupChanged(MTsResourceManager &,
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                                  const TArray<RWsSession::TWindowGroupChainInfo> &);
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    /**
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     * Checks if given uid is on hidden list
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     * @param   aUid uid to be checked
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     * @return  ETrue if uid is on hidden list
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     */    
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    TBool IsHiddenUid( TUid uid );
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    /**
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     * Set screenshot 
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     */
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    void SetScreenshotL(const CFbsBitmap* bitmap, UpdatePriority priority, TInt wgId);
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    /**
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     * Removes screenshot 
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     */    
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    void RemoveScreenshotL(TInt wgId);
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private:
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    /**
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     * Adds running apps to the list.
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     * @param   appsList    array to add to
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     */
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    void CollectAppsL(RTsFswArray& appsList,
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                      const TArray<RWsSession::TWindowGroupChainInfo> &wgList);
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    /**
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     * Called from CollectTasksL for each entry in the task list.
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     * @param   key       entry key
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     * @param   appUid     application uid
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     * @param   wgName     window group name or NULL
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     * @param   newList    list to add to
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     */
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    void AddEntryL(const TTsEntryKey& key, 
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                   const TUid& appUid,
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                   CApaWindowGroupName* wgName,
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                   RTsFswArray& newList );
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    /**
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     * Checks if there is an entry for same app in the content list.
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     * If yes then it takes some of the data for the entry that
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     * will correspond to the same app in the refreshed content list.
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     * @param   key      new key in content list
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     * @return  ETrue if app was found
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     */
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    TBool ConsiderOldDataL( const TTsEntryKey& key );
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    /**
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     * Finds out the application name.
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     * @param   windowName window group name or NULL
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     * @param   appUId     application uid
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     * @param   wgId       window group id
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     * @return  application name, ownership transferred to caller
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     */
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    HBufC* FindAppNameLC(CApaWindowGroupName* windowName,
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                         const TUid& appUid,
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                         TInt wgId );
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    /**
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     * Fit existing class contained data list into give one.
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     * Data is being changed with application type consideration that is based 
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     * on aConsiderWidgets param. 
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     * Function removes or add entries into data depend on given list.
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     * @param   listToFit          list with actual data  
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     */
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    void FitDataToList( RTsFswArray& listToFit);
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    /**
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     * Checks if there is an entry for same app in the given list.
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     * @param   entry      entry
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     * @param   newList    ref to list
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     * @return  ETrue if app was found
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     */
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    TBool CheckIfExists( const CTsFswEntry& entry,
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            const RTsFswArray& newList ) const;
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    /**
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     * Retrieves the bitmap/mask for the icon of the given app.
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     * @param   appUid application uid
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     * @param   bitmapArg bitmap ptr, ownership transferred to caller, or NULL
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     * @param   maskArg   mask ptr, ownership transferred to caller, or NULL
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     */
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    void GetAppIconL(const TUid& appUid,
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                     CFbsBitmap*& bitmapArg, 
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                     CFbsBitmap*& maskArg);
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    /**
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     * Finds entry in array
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     * @param   list list to find
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     * @param   key finding key
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     * @return   position or KErrNotFound
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     */
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    TInt FindEntry(const RTsFswArray& list, const TTsEntryKey& key ) const;
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    /**
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     * Establish entry order accridung to aKeyList, all keys MUST be in iData
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     * @param   keyList reference key list
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     * @return   ETrue if changes occured
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     */
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    TBool EstablishOrder(const RArray<TTsEntryKey>& keyList);
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    /**
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     * Gets allowed uids, tries to filter non GUI application 
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     */
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    TBool VerifyApplicationL(TUid);
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    /**
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     * Function generate task key using window group id
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     * @param wgId - window group id of running application
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     * @param entry key 
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     */
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    TTsEntryKey GenerateKeyL(TInt);
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    /**
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     * Analyse and compress lookup table id needed
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     * @param array - lookup table that has to be checked
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     * 
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     */
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    void CompressLookupTable(RArray<TUid> &array);
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    /**
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     * Change priority of an item in the lookup table
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     * @param array - look up table
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     * @param offset - index of an item in the table
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     */
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    void UpdateLookupTableL(RArray<TUid> &array, TInt offset);
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private:
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    /**
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     * Resource manager. Not own
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     */
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    MTsResourceManager& mResources;
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    MHsDataObserver &mObserver;
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    RTsFswArray mData; // current fsw content, i.e. the task list
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    // list of hidden uids
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    RArray<TUid> mHiddenUids;
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    // list of allowed uids
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    RArray<TUid> mAllowedUids;
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    };
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#endif //TSFSWDATALIST_H