phonebookui/Phonebook2/Commands/src/CPbk2CommandStore.cpp
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     1 /*
       
     2 * Copyright (c) 2005-2007 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:  Phonebook 2 command store.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 // INCLUDE FILES
       
    20 #include "CPbk2CommandStore.h"
       
    21 
       
    22 // Phonebook 2
       
    23 #include <MPbk2Command.h>
       
    24 #include <MPbk2MenuCommandObserver.h>
       
    25 
       
    26 // --------------------------------------------------------------------------
       
    27 // CPbk2CommandStore::CPbk2CommandStore
       
    28 // --------------------------------------------------------------------------
       
    29 //
       
    30 inline CPbk2CommandStore::CPbk2CommandStore() :
       
    31 iInputBlocker( NULL )
       
    32     {
       
    33     }
       
    34 
       
    35 // --------------------------------------------------------------------------
       
    36 // CPbk2CommandStore::~CPbk2CommandStore
       
    37 // --------------------------------------------------------------------------
       
    38 //
       
    39 CPbk2CommandStore::~CPbk2CommandStore()
       
    40     {
       
    41     iIdleDestructableCommands.Reset();
       
    42     iIdleDestructableCommands.Close();
       
    43     iCommandObservers.Reset();
       
    44     iCommandObservers.Close();
       
    45     iCommandArray.ResetAndDestroy();
       
    46     iCommandArray.Close();
       
    47     delete iIdleDestroyer;
       
    48     delete iInputBlocker;
       
    49     }
       
    50 
       
    51 // --------------------------------------------------------------------------
       
    52 // CPbk2CommandStore::NewL
       
    53 // --------------------------------------------------------------------------
       
    54 //
       
    55 EXPORT_C CPbk2CommandStore* CPbk2CommandStore::NewL()
       
    56     {
       
    57     CPbk2CommandStore* self = new ( ELeave ) CPbk2CommandStore;
       
    58     CleanupStack::PushL( self );
       
    59     self->ConstructL();
       
    60     CleanupStack::Pop( self );
       
    61     return self;
       
    62     }
       
    63 
       
    64 // --------------------------------------------------------------------------
       
    65 // CPbk2CommandStore::ConstructL
       
    66 // --------------------------------------------------------------------------
       
    67 //
       
    68 inline void CPbk2CommandStore::ConstructL()
       
    69     {
       
    70     iIdleDestroyer = CIdle::NewL( CActive::EPriorityIdle );
       
    71     }
       
    72 
       
    73 // --------------------------------------------------------------------------
       
    74 // CPbk2CommandStore::AddMenuCommandObserver
       
    75 // --------------------------------------------------------------------------
       
    76 //
       
    77 void CPbk2CommandStore::AddMenuCommandObserver
       
    78         ( MPbk2MenuCommandObserver& aObserver )
       
    79     {
       
    80     TRAP_IGNORE( iCommandObservers.AppendL( &aObserver ) );
       
    81     }
       
    82 
       
    83 
       
    84 // --------------------------------------------------------------------------
       
    85 // CPbk2CommandStore::RemoveMenuCommandObserver
       
    86 // --------------------------------------------------------------------------
       
    87 //
       
    88 void CPbk2CommandStore::RemoveMenuCommandObserver
       
    89         ( MPbk2MenuCommandObserver& aObserver )
       
    90     {
       
    91     TInt index = iCommandObservers.Find( &aObserver );
       
    92     if ( index > KErrNotFound )
       
    93         {
       
    94         iCommandObservers.Remove( index );
       
    95         }
       
    96     }
       
    97 
       
    98 // --------------------------------------------------------------------------
       
    99 // CPbk2CommandStore::AddAndExecuteCommandL
       
   100 // --------------------------------------------------------------------------
       
   101 //
       
   102 EXPORT_C void CPbk2CommandStore::AddAndExecuteCommandL
       
   103         ( MPbk2Command* aCommand )
       
   104     {
       
   105     const TInt KEmpty( 0 );
       
   106     if ( aCommand )
       
   107         {
       
   108         // If command array is empty, execute command.
       
   109         // Otherwise delete command to avoid overlapping commands.
       
   110         if ( iCommandArray.Count() == KEmpty )
       
   111             {
       
   112             // Avoid user input during command execution
       
   113             if( iInputBlocker )
       
   114                 {
       
   115                 iInputBlocker->Cancel();
       
   116                 }
       
   117             iInputBlocker = CAknInputBlock::NewCancelHandlerLC( this );
       
   118             CleanupStack::Pop( iInputBlocker );   
       
   119             iInputBlocker->SetCancelDelete( iInputBlocker );
       
   120                         
       
   121             // notify all command observers
       
   122             for ( TInt i = 0; i < iCommandObservers.Count(); ++i )
       
   123                 {
       
   124                 iCommandObservers[i]->PreCommandExecutionL( *aCommand );
       
   125                 }
       
   126             aCommand->AddObserver( *this );
       
   127                         
       
   128             // Some command observers needs always postcommand call,
       
   129             // if ExecuteLD leaves
       
   130             TRAPD( err, aCommand->ExecuteLD() );
       
   131             if ( err != KErrNone )
       
   132                 {
       
   133                 for (TInt i = 0; i < iCommandObservers.Count(); ++i)
       
   134                     {
       
   135                     // ignore leave, we are leaving anyway after this
       
   136                     TRAP_IGNORE
       
   137                         ( iCommandObservers[i]->PostCommandExecutionL( *aCommand ) );
       
   138                     }
       
   139                 
       
   140                 // stop user input blocker
       
   141                 if( iInputBlocker )
       
   142                     {
       
   143                     iInputBlocker->Cancel();
       
   144                     }
       
   145                 
       
   146                 User::Leave( err );
       
   147                 }
       
   148             User::LeaveIfError( iCommandArray.Append( aCommand ) );
       
   149             }
       
   150          else
       
   151             {
       
   152             delete aCommand;
       
   153             aCommand = NULL;
       
   154             }
       
   155         }
       
   156     }
       
   157 
       
   158 // --------------------------------------------------------------------------
       
   159 // CPbk2CommandStore::CommandFinished
       
   160 // --------------------------------------------------------------------------
       
   161 //
       
   162 void CPbk2CommandStore::CommandFinished( const MPbk2Command& aCommand )
       
   163     {
       
   164     // notify all command observers
       
   165     for (TInt i = 0; i < iCommandObservers.Count(); ++i)
       
   166         {
       
   167         TRAP_IGNORE
       
   168             ( iCommandObservers[i]->PostCommandExecutionL( aCommand ) );
       
   169         }
       
   170     
       
   171     // stop user input blocker
       
   172     if( iInputBlocker )
       
   173         {
       
   174         iInputBlocker->Cancel();
       
   175         }
       
   176 
       
   177     // Add command to the list of idle destroyable objects
       
   178     iIdleDestructableCommands.Append( &aCommand );
       
   179     // Cancel any outstanding before starting new one.
       
   180     iIdleDestroyer->Cancel();
       
   181     // Request idle destruction. If the append above failed,
       
   182     // it doesn't matter. The command gets destructed then
       
   183     // at the Phonebook exit, when this objects destructor
       
   184     // deletes also commands in iCommandArray.
       
   185     iIdleDestroyer->Start( TCallBack(
       
   186         ( &CPbk2CommandStore::IdleDestructorCallback ),this ) );
       
   187     }
       
   188 
       
   189 // --------------------------------------------------------------------------
       
   190 // CPbk2CommandStore::AknInputBlockCancel
       
   191 // --------------------------------------------------------------------------
       
   192 //
       
   193 void CPbk2CommandStore::AknInputBlockCancel()
       
   194 	{
       
   195 	iInputBlocker = NULL;
       
   196 	}
       
   197 
       
   198 
       
   199 // --------------------------------------------------------------------------
       
   200 // CPbk2CommandStore::IdleDestructorCallback
       
   201 // --------------------------------------------------------------------------
       
   202 //
       
   203 TInt CPbk2CommandStore::IdleDestructorCallback( TAny* aSelf )
       
   204     {
       
   205     CPbk2CommandStore* self = static_cast<CPbk2CommandStore*>( aSelf );
       
   206     self->IdleDestructor();
       
   207     return EFalse;
       
   208     }
       
   209 
       
   210 // --------------------------------------------------------------------------
       
   211 // CPbk2CommandStore::IdleDestructor
       
   212 // --------------------------------------------------------------------------
       
   213 //
       
   214 void CPbk2CommandStore::IdleDestructor()
       
   215     {
       
   216     // Delete objects in idle destroyable array
       
   217     for (TInt i = 0; i < iIdleDestructableCommands.Count(); ++i)
       
   218         {
       
   219         MPbk2Command* idleDestCmd = iIdleDestructableCommands[i];
       
   220         for (TInt j = iCommandArray.Count()-1; j >= 0; --j)
       
   221             {
       
   222             MPbk2Command* arrayCmd = iCommandArray[j];
       
   223             if (idleDestCmd == arrayCmd)
       
   224                 {
       
   225                 // Remove from command array
       
   226                 iCommandArray.Remove(j);
       
   227                 iIdleDestructableCommands.Remove(i);
       
   228                 delete idleDestCmd;
       
   229                 idleDestCmd = NULL;
       
   230                 }
       
   231             }
       
   232         }
       
   233     }
       
   234 
       
   235 
       
   236 // --------------------------------------------------------------------------
       
   237 // CPbk2CommandStore::DestroyAllCommands
       
   238 // --------------------------------------------------------------------------
       
   239 //
       
   240 void CPbk2CommandStore::DestroyAllCommands()
       
   241     {
       
   242     // Delete objects in idle commands array using CommandFinished
       
   243     for (TInt i = 0; i < iCommandArray.Count(); ++i)
       
   244         {
       
   245         MPbk2Command* destCmd = iCommandArray[i];
       
   246         CommandFinished ( *destCmd );
       
   247         }
       
   248     }
       
   249 // End of File