filemanager/GFLM/src/CGflmGroupItem.cpp
branchRCL_3
changeset 20 491b3ed49290
parent 19 95243422089a
child 21 65326cf895ed
equal deleted inserted replaced
19:95243422089a 20:491b3ed49290
     1 /*
       
     2 * Copyright (c) 2002-2007 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:  Group item definitions
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 // INCLUDE FILES
       
    21 #include "CGflmGroupItem.h"
       
    22 #include "MGflmItemGroup.h"
       
    23 #include <e32std.h>
       
    24 
       
    25 
       
    26 // CONSTANTS
       
    27 const TInt KIconIdUndefined = -1;
       
    28 const TInt KSortCollationLevel = 3;
       
    29 
       
    30 
       
    31 // ============================ MEMBER FUNCTIONS ===============================
       
    32 
       
    33 // -----------------------------------------------------------------------------
       
    34 // CGflmGroupItem::CGflmGroupItem
       
    35 // C++ default constructor can NOT contain any code, that
       
    36 // might leave.
       
    37 // -----------------------------------------------------------------------------
       
    38 //
       
    39 CGflmGroupItem::CGflmGroupItem()
       
    40     : iIconId( KIconIdUndefined )
       
    41     {
       
    42     }
       
    43 
       
    44 // -----------------------------------------------------------------------------
       
    45 // CGflmGroupItem::~CGflmGroupItem()
       
    46 // -----------------------------------------------------------------------------
       
    47 //
       
    48 CGflmGroupItem::~CGflmGroupItem()
       
    49     {
       
    50     }
       
    51 
       
    52 // -----------------------------------------------------------------------------
       
    53 // CGflmGroupItem::GetIconId()
       
    54 // (other items were commented in a header).
       
    55 // -----------------------------------------------------------------------------
       
    56 //
       
    57 EXPORT_C TInt CGflmGroupItem::GetIconId( TInt& aIconId )
       
    58     {
       
    59     if ( iIconId == KIconIdUndefined )
       
    60         {
       
    61         aIconId = 0;
       
    62         return KErrNotFound;
       
    63         }
       
    64     aIconId = iIconId;
       
    65     return KErrNone;
       
    66     }
       
    67 
       
    68 // -----------------------------------------------------------------------------
       
    69 // CGflmGroupItem::SetIconId()
       
    70 // (other items were commented in a header).
       
    71 // -----------------------------------------------------------------------------
       
    72 //
       
    73 EXPORT_C void CGflmGroupItem::SetIconId( const TInt aIconId )
       
    74     {
       
    75     iIconId = aIconId;
       
    76     }
       
    77 
       
    78 // -----------------------------------------------------------------------------
       
    79 // CGflmGroupItem::CanUseCompareF()
       
    80 // (other items were commented in a header).
       
    81 // -----------------------------------------------------------------------------
       
    82 //
       
    83 TBool CGflmGroupItem::CanUseCompareF() const    
       
    84     {
       
    85     if ( iStatus & ECanUseCompareF )
       
    86         {
       
    87         return ETrue;
       
    88         }
       
    89     if ( iStatus & ECannotUseCompareF )
       
    90         {
       
    91         return EFalse;
       
    92         }
       
    93 
       
    94     TPtrC name( Name() );
       
    95     TInt len( name.Length() );
       
    96     const TText* ptr = name.Ptr();
       
    97     while ( len-- > 0 )
       
    98         {
       
    99         TText ch = *ptr++;
       
   100         // Do not allow CompareF for non Ascii or special chars
       
   101         if ( !( ( ch >= 0x000A && ch <= 0x0039 ) ||  // Ascii basic symbols
       
   102                 ( ch >= 0x0041 && ch <= 0x005A ) ||  // Ascii capital alpha
       
   103                 ( ch >= 0x0061 && ch <= 0x007A ) ) ) // Ascii small alpha
       
   104             {
       
   105             iStatus |= ECannotUseCompareF;
       
   106             return EFalse;
       
   107             }
       
   108         }
       
   109     iStatus |= ECanUseCompareF;
       
   110     return ETrue;
       
   111     }
       
   112 
       
   113 // -----------------------------------------------------------------------------
       
   114 // CGflmGroupItem::SetGroup()
       
   115 // (other items were commented in a header).
       
   116 // -----------------------------------------------------------------------------
       
   117 //
       
   118 void CGflmGroupItem::SetGroup( MGflmItemGroup* aGroup )
       
   119     {
       
   120     iGroup = aGroup;
       
   121     }
       
   122 
       
   123 // -----------------------------------------------------------------------------
       
   124 // CGflmGroupItem::GetSortL()
       
   125 // (other items were commented in a header).
       
   126 // -----------------------------------------------------------------------------
       
   127 //
       
   128 
       
   129 TLinearOrder< CGflmGroupItem > CGflmGroupItem::GetSortL(
       
   130         TGflmSortMethod aSortMethod )
       
   131     {
       
   132     switch( aSortMethod )
       
   133         {
       
   134         case EByName:
       
   135             {
       
   136             return CompareByName;
       
   137             }
       
   138         case EByType:
       
   139             {
       
   140             return CompareByType;
       
   141             }
       
   142         case EMostRecentFirst:
       
   143             {
       
   144             return CompareMostRecentFirst;
       
   145             }
       
   146         case ELargestFirst:
       
   147             {
       
   148             return CompareLargestFirst;
       
   149             }
       
   150         default:
       
   151             {
       
   152             User::Leave( KErrNotSupported );
       
   153             }
       
   154         }
       
   155     return CompareByName;
       
   156     }
       
   157 
       
   158 // -----------------------------------------------------------------------------
       
   159 // CGflmGroupItem::CompareByItemType
       
   160 // Compares two CGflmGroupItem objects by name (ascending)
       
   161 // (other items were commented in a header).
       
   162 // -----------------------------------------------------------------------------
       
   163 //
       
   164 TInt CGflmGroupItem::CompareByItemType(
       
   165         const CGflmGroupItem& aFirst, const CGflmGroupItem& aSecond )
       
   166     {
       
   167     TGflmItemType first( aFirst.Type() );
       
   168     TGflmItemType second( aSecond.Type() );
       
   169     if ( first < second )
       
   170         {
       
   171         return -1;
       
   172         }
       
   173     else if ( first > second )
       
   174         {
       
   175         return 1;
       
   176         }
       
   177     return 0;
       
   178     }
       
   179 
       
   180 // -----------------------------------------------------------------------------
       
   181 // CGflmGroupItem::CompareByNameWithoutItemType
       
   182 // Compares two CGflmGroupItem objects by name (ascending)
       
   183 // (other items were commented in a header).
       
   184 // -----------------------------------------------------------------------------
       
   185 //
       
   186 TInt CGflmGroupItem::CompareByNameWithoutItemType(
       
   187         const CGflmGroupItem& aFirst, const CGflmGroupItem& aSecond )
       
   188     {
       
   189     // Do not use CompareC by default with collation
       
   190     // because it is very bad for performance when sorting
       
   191     // large folders i.e. several 1000s of files with long item names
       
   192     // e.g. names containing over 40 chars
       
   193 
       
   194     // However, some languages are not sorted correctly with CompareF,
       
   195     // so do cached name check to decide what comparison to use.
       
   196 
       
   197     if ( !aFirst.CanUseCompareF() || !aSecond.CanUseCompareF() )
       
   198         {
       
   199         if ( aFirst.iGroup )
       
   200             {
       
   201             const TCollationMethod* collate =
       
   202                 aFirst.iGroup->CollationMethod();
       
   203             if ( collate )
       
   204                 {
       
   205                 return aFirst.Name().CompareC(
       
   206                     aSecond.Name(),
       
   207                     KSortCollationLevel,
       
   208                     collate );
       
   209                 }
       
   210             }
       
   211         }
       
   212 
       
   213     return aFirst.Name().CompareF( aSecond.Name() );
       
   214     }
       
   215 
       
   216 // -----------------------------------------------------------------------------
       
   217 // CGflmGroupItem::CompareByName
       
   218 // Compares two CGflmGroupItem objects by name (ascending)
       
   219 // (other items were commented in a header).
       
   220 // -----------------------------------------------------------------------------
       
   221 //
       
   222 TInt CGflmGroupItem::CompareByName(
       
   223         const CGflmGroupItem& aFirst, const CGflmGroupItem& aSecond )
       
   224     {
       
   225     TInt ret( CompareByItemType( aFirst, aSecond ) );
       
   226     if ( !ret )
       
   227         {
       
   228         return CompareByNameWithoutItemType( aFirst, aSecond );
       
   229         }
       
   230     return ret;
       
   231     }
       
   232 
       
   233 // -----------------------------------------------------------------------------
       
   234 // CGflmGroupItem::CompareByType
       
   235 // Compares two CGflmGroupItem objects by file extension (ascending)
       
   236 // (other items were commented in a header).
       
   237 // -----------------------------------------------------------------------------
       
   238 //
       
   239 TInt CGflmGroupItem::CompareByType(
       
   240         const CGflmGroupItem& aFirst, const CGflmGroupItem& aSecond )
       
   241     {
       
   242     TInt ret( CompareByItemType( aFirst, aSecond ) );
       
   243     if ( ret )
       
   244         {
       
   245         return ret;
       
   246         }
       
   247 
       
   248     // Do not use CompareC by default with collation
       
   249     // because it is very bad for performance when sorting
       
   250     // large folders i.e. several 1000s of files with long item names
       
   251     // e.g. names containing over 40 chars
       
   252 
       
   253     // However, some languages are not sorted correctly with CompareF,
       
   254     // so do cached name check to decide what comparison to use.
       
   255 
       
   256     if ( !aFirst.CanUseCompareF() || !aSecond.CanUseCompareF() )
       
   257         {
       
   258         if ( aFirst.iGroup )
       
   259             {
       
   260             const TCollationMethod* collate =
       
   261                 aFirst.iGroup->CollationMethod();
       
   262             if ( collate )
       
   263                 {
       
   264                 ret = aFirst.Ext().CompareC(
       
   265                     aSecond.Ext(),
       
   266                     KSortCollationLevel,
       
   267                     collate );
       
   268                 if  ( !ret )
       
   269                     {
       
   270                     ret = CompareByName( aFirst, aSecond );
       
   271                     }
       
   272                 return ret;
       
   273                 }
       
   274             }
       
   275         }
       
   276 
       
   277     ret = aFirst.Ext().CompareF( aSecond.Ext() );
       
   278     if  ( !ret )
       
   279         {
       
   280         ret = CompareByNameWithoutItemType( aFirst, aSecond );
       
   281         }
       
   282     return ret;
       
   283     }
       
   284 
       
   285 // -----------------------------------------------------------------------------
       
   286 // CGflmGroupItem::CompareMostRecentFirst
       
   287 // Compares two CGflmGroupItem objects by date (ascending)
       
   288 // (other items were commented in a header).
       
   289 // -----------------------------------------------------------------------------
       
   290 //
       
   291 TInt CGflmGroupItem::CompareMostRecentFirst(
       
   292         const CGflmGroupItem& aFirst, const CGflmGroupItem& aSecond )
       
   293     {
       
   294     TInt ret( -CompareByItemType( aFirst, aSecond ) );
       
   295     if ( ret )
       
   296         {
       
   297         return ret;
       
   298         }
       
   299 
       
   300     TTime first( aFirst.Date() );
       
   301     TTime second( aSecond.Date() );
       
   302 
       
   303     if ( first > second )
       
   304         {
       
   305         return -1;
       
   306         }
       
   307     else if ( first < second )
       
   308         {
       
   309         return 1;
       
   310         }
       
   311     return CompareByNameWithoutItemType( aFirst, aSecond );
       
   312     }
       
   313 
       
   314 // -----------------------------------------------------------------------------
       
   315 // CGflmGroupItem::CompareLargestFirst
       
   316 // Compares two CGflmGroupItem objects by size (ascending)
       
   317 // (other items were commented in a header).
       
   318 // -----------------------------------------------------------------------------
       
   319 //
       
   320 TInt CGflmGroupItem::CompareLargestFirst(
       
   321         const CGflmGroupItem& aFirst, const CGflmGroupItem& aSecond )
       
   322     {
       
   323     TInt ret( -CompareByItemType( aFirst, aSecond ) );
       
   324     if ( ret )
       
   325         {
       
   326         return ret;
       
   327         }
       
   328 
       
   329     TInt64 first( aFirst.Size() );
       
   330     TInt64 second( aSecond.Size() );
       
   331 
       
   332     if ( first > second )
       
   333         {
       
   334         return -1;
       
   335         }
       
   336     else if ( first < second )
       
   337         {
       
   338         return 1;
       
   339         }
       
   340     return CompareByNameWithoutItemType( aFirst, aSecond );
       
   341     }
       
   342 
       
   343 //  End of File