uiacceltk/hitchcock/Client/src/alfcommandscheduler.cpp
changeset 0 15bf7259bb7c
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     1 /*
       
     2 * Copyright (c) 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:   Command scheduler.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 #include "alfcommandscheduler.h"
       
    21 #include "alf/alfcommand.h"
       
    22 #include "alflogger.h"
       
    23 
       
    24 #include <uiacceltk/HuiUtil.h>
       
    25 
       
    26 // Internal flags.
       
    27 enum TAlfSchedulerFlags
       
    28    {
       
    29    EAlfSchedulerPrimaryLightsOn        = 0x01,
       
    30    EAlfSchedulerSecondaryLightsOn      = 0x02,
       
    31    EAlfSchedulerApplicationForeground  = 0x04,
       
    32    EAlfSchedulerRunning                = 0x08
       
    33    };
       
    34 
       
    35 // ======== CTimedEvent MEMBER FUNCTIONS ========
       
    36 
       
    37 // ---------------------------------------------------------------------------
       
    38 // NewLC
       
    39 // ---------------------------------------------------------------------------
       
    40 //
       
    41 CAlfCommandScheduler::CTimedEvent* CAlfCommandScheduler::CTimedEvent::NewLC( 
       
    42             const TAlfCommand& aCommand,
       
    43             CAlfCommandScheduler& aScheduler )
       
    44     {
       
    45     CTimedEvent* self = new (ELeave) CTimedEvent(aScheduler);
       
    46     CleanupStack::PushL( self );
       
    47     self->ConstructL( aCommand );
       
    48     return self;
       
    49     }
       
    50   
       
    51 // ---------------------------------------------------------------------------
       
    52 // Destructor
       
    53 // ---------------------------------------------------------------------------
       
    54 //  
       
    55 CAlfCommandScheduler::CTimedEvent::~CTimedEvent()
       
    56     {
       
    57     Cancel();
       
    58     delete iCommand;
       
    59     }
       
    60   
       
    61 // ---------------------------------------------------------------------------
       
    62 // Constructor
       
    63 // ---------------------------------------------------------------------------
       
    64 //  
       
    65 CAlfCommandScheduler::CTimedEvent::CTimedEvent( CAlfCommandScheduler& aScheduler )
       
    66  : CTimer( EPriorityStandard ), iScheduler( aScheduler )
       
    67     {
       
    68     CActiveScheduler::Add( this );
       
    69     }
       
    70   
       
    71 // ---------------------------------------------------------------------------
       
    72 // ConstructL
       
    73 // ---------------------------------------------------------------------------
       
    74 //  
       
    75 void CAlfCommandScheduler::CTimedEvent::ConstructL(const TAlfCommand& aCommand)
       
    76     {
       
    77     CTimer::ConstructL();
       
    78     
       
    79     // Make a copy of the command.
       
    80     TAlfCommand* data = (TAlfCommand*) new (ELeave) TUint8[aCommand.Size()];
       
    81     Mem::Copy((TAny*)data, (TAny*)&aCommand, aCommand.Size());
       
    82     iCommand = data;
       
    83     }
       
    84  
       
    85 // ---------------------------------------------------------------------------
       
    86 // Called when timer triggers.
       
    87 // ---------------------------------------------------------------------------
       
    88 //   
       
    89 void CAlfCommandScheduler::CTimedEvent::RunL()
       
    90     {
       
    91     iScheduler.ExecuteEventL( *iCommand );
       
    92     delete this;
       
    93     }
       
    94 
       
    95 // ---------------------------------------------------------------------------
       
    96 // Called when RunL leaves
       
    97 // ---------------------------------------------------------------------------
       
    98 //     
       
    99 TInt CAlfCommandScheduler::CTimedEvent::RunError(TInt aError)
       
   100     {
       
   101     __ALFLOGSTRING1( "CAlfCommandScheduler::ExecuteEventL leaves with %d", aError )
       
   102     delete this;
       
   103     return aError;
       
   104     }
       
   105 
       
   106 // ---------------------------------------------------------------------------
       
   107 // Execute command after given timed.
       
   108 // ---------------------------------------------------------------------------
       
   109 //    
       
   110 void CAlfCommandScheduler::CTimedEvent::ExecuteAfter( 
       
   111     TInt aIntervalInMilliSeconds, 
       
   112     TBool aStartPaused )
       
   113     {
       
   114     __ASSERT_ALWAYS( !IsActive(), USER_INVARIANT() );
       
   115     iTimeLeftInMilliSeconds = aIntervalInMilliSeconds; 
       
   116     
       
   117     // If the scheduler is not paused...
       
   118     if ( !aStartPaused )
       
   119         {
       
   120         // ...start the timer.
       
   121         After( aIntervalInMilliSeconds * 1000 );
       
   122         iLastStartTime.UniversalTime(); // Update the start-time stamp.
       
   123         }
       
   124     }
       
   125 
       
   126 // ---------------------------------------------------------------------------
       
   127 // Pauses the time
       
   128 // ---------------------------------------------------------------------------
       
   129 //    
       
   130 void CAlfCommandScheduler::CTimedEvent::Pause()
       
   131     {
       
   132     // If not paused...
       
   133     if ( IsActive() )
       
   134         {
       
   135         // ... cancel the timer and update the time left.
       
   136         Cancel();
       
   137         TTime timeNow;
       
   138         timeNow.UniversalTime();
       
   139         iTimeLeftInMilliSeconds -= 
       
   140             timeNow.MicroSecondsFrom( iLastStartTime ).Int64()/1000;
       
   141         }
       
   142     }
       
   143 
       
   144 // ---------------------------------------------------------------------------
       
   145 // Continue timer.
       
   146 // ---------------------------------------------------------------------------
       
   147 //    
       
   148 void CAlfCommandScheduler::CTimedEvent::Continue()
       
   149     {
       
   150     // If not running...
       
   151     if ( !IsActive() )
       
   152         {
       
   153         // ... execute the event...
       
   154         if ( iTimeLeftInMilliSeconds <= 0 )
       
   155             {
       
   156             // ...now
       
   157             TRAP_IGNORE(iScheduler.ExecuteEventL( *iCommand ))
       
   158             delete this;
       
   159             }
       
   160         else
       
   161             {
       
   162             // ...after the time left.
       
   163             After( iTimeLeftInMilliSeconds * 1000 );
       
   164             iLastStartTime.UniversalTime(); // Update the start-time stamp.
       
   165             }
       
   166         }
       
   167     }
       
   168 
       
   169 // ---------------------------------------------------------------------------
       
   170 // Calculates the time left.
       
   171 // ---------------------------------------------------------------------------
       
   172 //    
       
   173 TInt CAlfCommandScheduler::CTimedEvent::TimeLeftInMilliSeconds() const
       
   174     {
       
   175     TInt timeLeftInMilliSeconds = 0;
       
   176     if ( IsActive() )
       
   177         {
       
   178         TTime timeNow;
       
   179         timeNow.UniversalTime();
       
   180         timeLeftInMilliSeconds = 
       
   181             iTimeLeftInMilliSeconds - 
       
   182             timeNow.MicroSecondsFrom( iLastStartTime ).Int64()/1000;
       
   183         }
       
   184     else
       
   185         {
       
   186         timeLeftInMilliSeconds = iTimeLeftInMilliSeconds;
       
   187         }
       
   188              
       
   189     if ( timeLeftInMilliSeconds < 0 )
       
   190         {
       
   191         timeLeftInMilliSeconds = 0;
       
   192         }
       
   193     return timeLeftInMilliSeconds;
       
   194     }
       
   195 
       
   196 // ======== CAlfCommandScheduler MEMBER FUNCTIONS ========
       
   197     
       
   198 // ---------------------------------------------------------------------------
       
   199 // NewL
       
   200 // ---------------------------------------------------------------------------
       
   201 //
       
   202 CAlfCommandScheduler* CAlfCommandScheduler::NewL( CAlfEnv& aEnv)
       
   203     {
       
   204     CAlfCommandScheduler* self = new (ELeave) CAlfCommandScheduler( aEnv );
       
   205     CleanupStack::PushL( self );
       
   206     self->ConstructL();
       
   207     CleanupStack::Pop( self );
       
   208     return self;
       
   209     }
       
   210  
       
   211 // ---------------------------------------------------------------------------
       
   212 // Constructor
       
   213 // ---------------------------------------------------------------------------
       
   214 //   
       
   215 CAlfCommandScheduler::CAlfCommandScheduler( CAlfEnv& aEnv)
       
   216  : iEnv(aEnv)
       
   217     {
       
   218     }
       
   219  
       
   220 // ---------------------------------------------------------------------------
       
   221 // ConstructL
       
   222 // Update internal flags.
       
   223 // ---------------------------------------------------------------------------
       
   224 //   
       
   225 void CAlfCommandScheduler::ConstructL()
       
   226     {
       
   227     iLight = CHWRMLight::NewL(this); // Calls LightStatusChanged()
       
   228     
       
   229     iFlags |= EAlfSchedulerApplicationForeground;
       
   230     iFlags |= EAlfSchedulerRunning;
       
   231 
       
   232     // Workaround for non-working light status reports  
       
   233     iFlags |= EAlfSchedulerPrimaryLightsOn; 
       
   234     }
       
   235 
       
   236 // ---------------------------------------------------------------------------
       
   237 // Destructor
       
   238 // ---------------------------------------------------------------------------
       
   239 //    
       
   240 CAlfCommandScheduler::~CAlfCommandScheduler()
       
   241     {
       
   242     iEvents.ResetAndDestroy();
       
   243     delete iLight;
       
   244     }
       
   245  
       
   246 // ---------------------------------------------------------------------------
       
   247 // Executes given command after given time
       
   248 // ---------------------------------------------------------------------------
       
   249 //   
       
   250 void CAlfCommandScheduler::ScheduleCommandL( 
       
   251     const TAlfCommand& aCommand, 
       
   252     TInt aTimeInMilliSeconds )
       
   253     {
       
   254     if (aTimeInMilliSeconds == 0)
       
   255         {
       
   256         __ALFLOGSTRING( "CAlfCommandScheduler::ScheduleCommandL execute now" )
       
   257         // Execute now
       
   258         aCommand.ExecuteL( iEnv );
       
   259         return;
       
   260         }
       
   261     
       
   262     // Create timed event
       
   263     __ALFLOGSTRING1( "CAlfCommandScheduler::ScheduleCommandL in %dms", aTimeInMilliSeconds )
       
   264     CTimedEvent* event = CTimedEvent::NewLC( aCommand, *this );
       
   265     iEvents.AppendL( event );
       
   266     CleanupStack::Pop( event );
       
   267     event->ExecuteAfter( aTimeInMilliSeconds, !(iFlags&EAlfSchedulerRunning) );
       
   268     }
       
   269 
       
   270 // ---------------------------------------------------------------------------
       
   271 // Cancel all object commands.
       
   272 // ---------------------------------------------------------------------------
       
   273 //    
       
   274 void CAlfCommandScheduler::CancelCommands( TAny* aObject )
       
   275     {
       
   276     for ( TInt i = iEvents.Count() - 1; i >= 0; i--)
       
   277         {
       
   278         const TAlfObjectCommand* objectCommand = 
       
   279             iEvents[i]->iCommand->ObjectCommand();
       
   280         if(objectCommand && objectCommand->Object() == aObject)
       
   281             {
       
   282             delete iEvents[i];
       
   283             iEvents.Remove( i );
       
   284             }
       
   285         }
       
   286     iEvents.Compress();
       
   287     }
       
   288 
       
   289 // ---------------------------------------------------------------------------
       
   290 // Cancels specific operation for given object
       
   291 // ---------------------------------------------------------------------------
       
   292 //    
       
   293 void CAlfCommandScheduler::CancelCommands(TAny* aObject, TAlfOp aCommandOperation)
       
   294     {
       
   295     for(TInt i = iEvents.Count() - 1; i >= 0; --i)
       
   296         {
       
   297         const TAlfObjectCommand* objectCommand = 
       
   298             iEvents[i]->iCommand->ObjectCommand();
       
   299         if(objectCommand && 
       
   300            objectCommand->Object() == aObject &&
       
   301            objectCommand->Operation() == aCommandOperation)
       
   302             {
       
   303             // Cancel this one.
       
   304             delete iEvents[i];
       
   305             iEvents.Remove( i );
       
   306             }
       
   307         }
       
   308     iEvents.Compress();
       
   309     }
       
   310     
       
   311 // ---------------------------------------------------------------------------
       
   312 // Cancels given command types from given object
       
   313 // ---------------------------------------------------------------------------
       
   314 //    
       
   315 void CAlfCommandScheduler::CancelCommands(TAny* aObject,
       
   316                                    TAlfCommandType aCommandType,
       
   317                                    TInt aParam)
       
   318     {
       
   319     for(TInt i = iEvents.Count() - 1; i >= 0; --i)
       
   320         {
       
   321         const TAlfObjectCommand* objectCommand = 
       
   322             iEvents[i]->iCommand->ObjectCommand();
       
   323 
       
   324         if(objectCommand && 
       
   325            objectCommand->Object() == aObject &&
       
   326            objectCommand->Type() == aCommandType)
       
   327             {
       
   328             if(objectCommand->Type() == EAlfCommandTypeCustomEvent)
       
   329                 {
       
   330                 const TAlfCustomEventCommand* cec = 
       
   331                     (const TAlfCustomEventCommand*) objectCommand;
       
   332                     
       
   333                 if(cec->Param() != aParam)
       
   334                     {
       
   335                     // Not this one, wrong parameter.
       
   336                     continue;
       
   337                     }
       
   338                 }
       
   339             // Cancel this one.
       
   340             delete iEvents[i];
       
   341             iEvents.Remove( i );
       
   342             }
       
   343         }
       
   344         
       
   345     iEvents.Compress();
       
   346     }
       
   347 
       
   348 // ---------------------------------------------------------------------------
       
   349 // Returns time left ot the command
       
   350 // ---------------------------------------------------------------------------
       
   351 //     
       
   352 TInt CAlfCommandScheduler::MilliSecondsUntilCommand( 
       
   353         TAny* aObject )
       
   354     {
       
   355     TInt returnValue = KErrNotFound;
       
   356     
       
   357     for ( TInt i = iEvents.Count() - 1; i >= 0; i--)
       
   358         {
       
   359         const TAlfObjectCommand* objectCommand = 
       
   360             iEvents[i]->iCommand->ObjectCommand();
       
   361         if(objectCommand && objectCommand->Object() == aObject)
       
   362             {
       
   363             TInt timeLeft = iEvents[i]->TimeLeftInMilliSeconds();
       
   364             if ( returnValue == KErrNotFound || timeLeft < returnValue )
       
   365                 {
       
   366                 returnValue = timeLeft;
       
   367                 }
       
   368             }
       
   369         }
       
   370         
       
   371     return returnValue;
       
   372     }
       
   373 
       
   374 // ---------------------------------------------------------------------------
       
   375 // Returns time left ot the command
       
   376 // ---------------------------------------------------------------------------
       
   377 //    
       
   378 TInt CAlfCommandScheduler::MilliSecondsUntilCommand( 
       
   379         TAny* aObject, 
       
   380         TAlfOp aCommandOperation )
       
   381     {
       
   382     TInt returnValue = KErrNotFound;
       
   383     
       
   384     for(TInt i = iEvents.Count() - 1; i >= 0; --i)
       
   385         {
       
   386         const TAlfObjectCommand* objectCommand = 
       
   387             iEvents[i]->iCommand->ObjectCommand();
       
   388         if(objectCommand && 
       
   389            objectCommand->Object() == aObject &&
       
   390            objectCommand->Operation() == aCommandOperation)
       
   391             {
       
   392             TInt timeLeft = iEvents[i]->TimeLeftInMilliSeconds();
       
   393             if ( returnValue == KErrNotFound || timeLeft < returnValue )
       
   394                 {
       
   395                 returnValue = timeLeft;
       
   396                 }
       
   397             }
       
   398         }
       
   399     
       
   400     return returnValue;
       
   401     }
       
   402 
       
   403 // ---------------------------------------------------------------------------
       
   404 // Returns time left ot the command
       
   405 // ---------------------------------------------------------------------------
       
   406 //      
       
   407 TInt CAlfCommandScheduler::MilliSecondsUntilCommand( 
       
   408         TAny* aObject, 
       
   409         TAlfCommandType aCommandType, 
       
   410         TInt aParam )
       
   411     {
       
   412     TInt returnValue = KErrNotFound;
       
   413     
       
   414     for(TInt i = iEvents.Count() - 1; i >= 0; --i)
       
   415         {
       
   416         const TAlfObjectCommand* objectCommand = 
       
   417             iEvents[i]->iCommand->ObjectCommand();
       
   418 
       
   419         if(objectCommand && 
       
   420            objectCommand->Object() == aObject &&
       
   421            objectCommand->Type() == aCommandType)
       
   422             {
       
   423             if(objectCommand->Type() == EAlfCommandTypeCustomEvent)
       
   424                 {
       
   425                 const TAlfCustomEventCommand* cec = 
       
   426                     (const TAlfCustomEventCommand*) objectCommand;
       
   427                     
       
   428                 if(cec->Param() != aParam)
       
   429                     {
       
   430                     // Not this one, wrong parameter.
       
   431                     continue;
       
   432                     }
       
   433                 }
       
   434             TInt timeLeft = iEvents[i]->TimeLeftInMilliSeconds();
       
   435             if ( returnValue == KErrNotFound || timeLeft < returnValue )
       
   436                 {
       
   437                 returnValue = timeLeft;
       
   438                 }
       
   439             }
       
   440         }
       
   441     
       
   442     return returnValue;
       
   443     }
       
   444   
       
   445 // ---------------------------------------------------------------------------
       
   446 // Executes command
       
   447 // ---------------------------------------------------------------------------
       
   448 //  
       
   449 void CAlfCommandScheduler::ExecuteEventL( TAlfCommand& aCommand )
       
   450     { 
       
   451     for ( TInt i = 0 ; i < iEvents.Count() ; i++ )
       
   452         {
       
   453         if ( iEvents[i]->iCommand == &aCommand )
       
   454             {
       
   455             iEvents.Remove( i );
       
   456             iEvents.Compress();
       
   457             break;
       
   458             }
       
   459         }
       
   460     
       
   461     aCommand.ExecuteL( iEnv );
       
   462     }     
       
   463 
       
   464 // ---------------------------------------------------------------------------
       
   465 // Called when foreground status changes.
       
   466 // ---------------------------------------------------------------------------
       
   467 //    
       
   468 void CAlfCommandScheduler::AppicationOnForeground( TBool aForeground )
       
   469     {
       
   470     if ( aForeground )
       
   471         {
       
   472         iFlags |= EAlfSchedulerApplicationForeground;
       
   473         }
       
   474     else
       
   475         {
       
   476         iFlags &= ~EAlfSchedulerApplicationForeground;
       
   477         }
       
   478         
       
   479     UpdateSchedulerState();
       
   480     }
       
   481 
       
   482 // ---------------------------------------------------------------------------
       
   483 // Called when display light status changes.
       
   484 // ---------------------------------------------------------------------------
       
   485 //    
       
   486 void CAlfCommandScheduler::LightStatusChanged(
       
   487     TInt aTarget, 
       
   488     CHWRMLight::TLightStatus aStatus )
       
   489     {
       
   490     if( aTarget&CHWRMLight::EPrimaryDisplay )
       
   491         {
       
   492         if( aStatus == CHWRMLight::ELightOn || 
       
   493             aStatus == CHWRMLight::ELightStatusUnknown )
       
   494             {
       
   495             iFlags |= EAlfSchedulerPrimaryLightsOn;
       
   496             }
       
   497         else if( aStatus == CHWRMLight::ELightOff )
       
   498             {
       
   499             iFlags &= ~EAlfSchedulerPrimaryLightsOn;
       
   500             }
       
   501         else
       
   502             {
       
   503             // for PC lint
       
   504             }
       
   505         }
       
   506         
       
   507     if( aTarget&CHWRMLight::ESecondaryDisplay )
       
   508         {
       
   509         if( aStatus == CHWRMLight::ELightOn || 
       
   510             aStatus == CHWRMLight::ELightStatusUnknown )
       
   511             {
       
   512             iFlags |= EAlfSchedulerSecondaryLightsOn;
       
   513             }
       
   514         else if( aStatus == CHWRMLight::ELightOff )
       
   515             {
       
   516             iFlags &= ~EAlfSchedulerSecondaryLightsOn;
       
   517             }
       
   518         else
       
   519             {
       
   520             // for PC lint
       
   521             }
       
   522         }
       
   523         
       
   524     UpdateSchedulerState();
       
   525     }
       
   526 
       
   527 // ---------------------------------------------------------------------------
       
   528 // Updates scheduling state based on the internal flags.
       
   529 // ---------------------------------------------------------------------------
       
   530 //    
       
   531 void CAlfCommandScheduler::UpdateSchedulerState()
       
   532     {
       
   533     if ( (iFlags&EAlfSchedulerPrimaryLightsOn ||
       
   534           iFlags&EAlfSchedulerSecondaryLightsOn ) && 
       
   535          iFlags&EAlfSchedulerApplicationForeground )
       
   536         {
       
   537         // Run the scheduler
       
   538         Run();
       
   539         }
       
   540     else
       
   541         {
       
   542         // Pause schduler
       
   543         Pause();
       
   544         }
       
   545     }
       
   546  
       
   547 // ---------------------------------------------------------------------------
       
   548 // Restarts the scheduling.
       
   549 // ---------------------------------------------------------------------------
       
   550 //   
       
   551 void CAlfCommandScheduler::Run()
       
   552     {
       
   553     if ( iFlags&EAlfSchedulerRunning )
       
   554         {
       
   555         return; // Already running
       
   556         }
       
   557         
       
   558     iFlags |= EAlfSchedulerRunning;
       
   559 
       
   560     for(TInt i = iEvents.Count() - 1; i >= 0; --i)
       
   561         {
       
   562         iEvents[i]->Continue();
       
   563         
       
   564         // Executing a command may have potentially altered the iEvents array,
       
   565         // e.g. application may have canceled other commands when one command was
       
   566         // executed. We must make sure that we don't overindex here !
       
   567         if (i > iEvents.Count() + 1)
       
   568             {
       
   569             i = iEvents.Count();    
       
   570             }
       
   571         }
       
   572     }
       
   573  
       
   574 // ---------------------------------------------------------------------------
       
   575 // Pause scheduling.
       
   576 // ---------------------------------------------------------------------------
       
   577 //   
       
   578 void CAlfCommandScheduler::Pause()
       
   579     {
       
   580     if ( !(iFlags&EAlfSchedulerRunning) )
       
   581         {
       
   582         return; // Already paused
       
   583         }
       
   584 
       
   585     iFlags &= ~EAlfSchedulerRunning;
       
   586     for(TInt i = iEvents.Count() - 1; i >= 0; --i)
       
   587         {
       
   588         iEvents[i]->Pause();
       
   589         }
       
   590 
       
   591     }