menufw/hierarchynavigator/hnmetadatamodel/src/hnbitmapidcache.cpp
changeset 0 f72a12da539e
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     1 /*
       
     2 * Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  
       
    15 *  Version     : %version:  3 % << Don't touch! Updated by Synergy at check-out.
       
    16 *
       
    17 */
       
    18 
       
    19 #include "hnbitmapidcache.h"
       
    20 #include "hnglobals.h"
       
    21 
       
    22 // ---------------------------------------------------------------------------
       
    23 //
       
    24 // ---------------------------------------------------------------------------
       
    25 //
       
    26 TUint32 HBufC8HashCache( HBufC8* const &  aBuf )
       
    27     {
       
    28     return DefaultHash::Des8(*aBuf);
       
    29     }
       
    30 
       
    31 // ---------------------------------------------------------------------------
       
    32 //
       
    33 // ---------------------------------------------------------------------------
       
    34 //
       
    35 TBool HBufC8IdentCache( HBufC8* const & aL, HBufC8* const & aR )
       
    36     {
       
    37     return DefaultIdentity::Des8(*aL, *aR);
       
    38     }
       
    39 
       
    40 // ---------------------------------------------------------------------------
       
    41 //
       
    42 // ---------------------------------------------------------------------------
       
    43 //
       
    44 CHnBitmapIdCache::CHnBitmapIdCache() : iEntries( &HBufC8HashCache, 
       
    45         &HBufC8IdentCache )
       
    46     {
       
    47     
       
    48     }
       
    49     
       
    50 // ---------------------------------------------------------------------------
       
    51 //
       
    52 // ---------------------------------------------------------------------------
       
    53 //
       
    54 void CHnBitmapIdCache::ConstructL()
       
    55 	{
       
    56 	
       
    57 	}
       
    58 
       
    59 // ---------------------------------------------------------------------------
       
    60 //
       
    61 // ---------------------------------------------------------------------------
       
    62 //
       
    63 TInt CHnBitmapIdCache::AddL( const TDesC8& aKey, TInt aValue ) 
       
    64     {
       
    65     HBufC8* key = aKey.AllocL();
       
    66     iEntries.InsertL( key, aValue );
       
    67     return KErrNone;
       
    68     }
       
    69 
       
    70 // ---------------------------------------------------------------------------
       
    71 //
       
    72 // ---------------------------------------------------------------------------
       
    73 //
       
    74 TBool CHnBitmapIdCache::ExistsL( const TDesC8& aKey )
       
    75     {
       
    76     HBufC8* buf = aKey.AllocLC();
       
    77     TInt* value = iEntries.Find( buf );
       
    78     CleanupStack::PopAndDestroy( buf );
       
    79 
       
    80     if ( value )
       
    81         return ETrue;
       
    82     else
       
    83         return EFalse;
       
    84     }
       
    85 
       
    86 // ---------------------------------------------------------------------------
       
    87 //
       
    88 // ---------------------------------------------------------------------------
       
    89 //
       
    90 void CHnBitmapIdCache::GetL( const TDesC8& aKey, TInt& value )
       
    91     {
       
    92     HBufC8* buf = aKey.AllocLC();
       
    93     const TInt* res = iEntries.Find( buf );
       
    94     
       
    95     if ( res )
       
    96         {
       
    97         value = *res;
       
    98         }
       
    99 
       
   100     CleanupStack::PopAndDestroy( buf );
       
   101     }
       
   102 
       
   103 // ---------------------------------------------------------------------------
       
   104 //
       
   105 // ---------------------------------------------------------------------------
       
   106 //
       
   107 CHnBitmapIdCache* CHnBitmapIdCache::NewLC()
       
   108     {
       
   109     CHnBitmapIdCache* self = new (ELeave) CHnBitmapIdCache();
       
   110     CleanupStack::PushL( self );
       
   111     self->ConstructL();
       
   112     return self;
       
   113     }
       
   114 
       
   115 // ---------------------------------------------------------------------------
       
   116 //
       
   117 // ---------------------------------------------------------------------------
       
   118 //
       
   119 CHnBitmapIdCache* CHnBitmapIdCache::NewL()
       
   120     {
       
   121     CHnBitmapIdCache* self = CHnBitmapIdCache::NewLC();
       
   122     CleanupStack::Pop( self );
       
   123     return self;
       
   124     }
       
   125 
       
   126 // ---------------------------------------------------------------------------
       
   127 //
       
   128 // ---------------------------------------------------------------------------
       
   129 //
       
   130 void CHnBitmapIdCache::Reset()
       
   131     {
       
   132     THashMapIter<HBufC8*, TInt> iter( iEntries );
       
   133     while ( HBufC8* const * ptr = iter.NextKey() )
       
   134         {
       
   135         TInt* value = iter.CurrentValue();
       
   136         delete *ptr;
       
   137         }
       
   138     iEntries.Close();
       
   139     }
       
   140 
       
   141 
       
   142 // ---------------------------------------------------------------------------
       
   143 //
       
   144 // ---------------------------------------------------------------------------
       
   145 //
       
   146 CHnBitmapIdCache::~CHnBitmapIdCache()
       
   147     {
       
   148     Reset();
       
   149     }