/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  State Manager

*

*/

// System includes

// User includes

#include <hscontentpublisher.h>

#include <aifwdefs.h>

#include "aipluginfactory.h"

#include "aistatemanager.h"

#include "debug.h"

// Constants

_LIT( KOnlineOffline, "online_offline" );

// ======== LOCAL FUNCTIONS ========

// ----------------------------------------------------------------------------

// StartReason

// 

// ----------------------------------------------------------------------------

//

static CHsContentPublisher::TStartReason StartReason( TAiFwLoadReason aReason )

    {

    CHsContentPublisher::TStartReason reason; 

    if ( aReason == EAiFwPageStartup )

        {

        reason = CHsContentPublisher::EPageStartup; 

        }

    else if ( aReason == EAiFwPluginStartup )

        {

        reason = CHsContentPublisher::EPluginStartup;

        }

    else

        {

        reason = CHsContentPublisher::ESystemStartup;

        }

    return reason;

    }

// ----------------------------------------------------------------------------

// StopReason

// 

// ----------------------------------------------------------------------------

//

static CHsContentPublisher::TStopReason StopReason( TAiFwDestroyReason aReason )

    {

    CHsContentPublisher::TStopReason reason; 

    if ( aReason == EAiFwPageShutdown )

        {

        reason = CHsContentPublisher::EPageShutdown; 

        }

    else if ( aReason == EAiFwPluginShutdown )

        {

        reason = CHsContentPublisher::EPluginShutdown;

        }

    else

        {

        reason = CHsContentPublisher::ESystemShutdown;

        }

    return reason;

    }

// ======== MEMBER FUNCTIONS ========

// ----------------------------------------------------------------------------

// CAiStateManager::NewL()

// Two-phased constructor.

// ----------------------------------------------------------------------------

//

CAiStateManager* CAiStateManager::NewL( CAiPluginFactory& aFactory )

    {

    CAiStateManager* self = CAiStateManager::NewLC( aFactory );

    CleanupStack::Pop( self );

    return self;

    }

// ----------------------------------------------------------------------------

// CAiStateManager::NewLC()

// Two-phased constructor.

// ----------------------------------------------------------------------------

//

CAiStateManager* CAiStateManager::NewLC( CAiPluginFactory& aFactory )

    {

    CAiStateManager* self = new ( ELeave ) CAiStateManager( aFactory );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// ----------------------------------------------------------------------------

// CAiStateManager::~CAiStateManager()

// C++ default destructor.

// ----------------------------------------------------------------------------

//

CAiStateManager::~CAiStateManager()

    {  

    }

// ----------------------------------------------------------------------------

// CAiStateManager::CAiStateManager()

// C++ default constructor.

// ----------------------------------------------------------------------------

//

CAiStateManager::CAiStateManager( CAiPluginFactory& aFactory )

    : iFactory( aFactory )

    {

    }

// ----------------------------------------------------------------------------

// CAiStateManager::ConstructL()

// 2nd phase constructor

// ----------------------------------------------------------------------------

//

void CAiStateManager::ConstructL()

    {        

    }

// ----------------------------------------------------------------------------

// CAiStateManager::NotifyStateChange()

// 

// ----------------------------------------------------------------------------

//

void CAiStateManager::NotifyStateChange( TAiFwState aState )    

    {       

    if ( aState == EAiFwUiShutdown )

        {     

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwUiShutdown" );

        iFlags.Set( EShutdown );

        DestroyPlugins();

        return;

        }    

    else if ( aState == EAiFwUiStartup )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwUiStartup" );

        iFlags.Clear( EShutdown );

        return;

        }

    TBitFlags32 flags( iFlags );

    if ( aState == EAiFwForeground )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwForeground" );

        iFlags.Set( EIsForeground );                                    

        }

    else if ( aState == EAiFwBackground )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwBackground" );

        iFlags.Clear( EIsForeground );

        }

    else if ( aState == EAiFwBacklightOn )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwBacklightOn" );

        iFlags.Set( EIsLightsOn );

        }

    else if ( aState == EAiFwBacklightOff )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwBacklightOff" );

        iFlags.Clear( EIsLightsOn );

        }

    else if ( aState == EAiFwOnline )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwOnline" );

        iFlags.Set( EIsOnline );

        ProcessOnlineStateChange();

        }

    else if ( aState == EAiFwOffline )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwOffline" );

        iFlags.Clear( EIsOnline );

        ProcessOnlineStateChange();

        }

    else if ( aState == EAiFwGeneralThemeChange )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwGeneralThemeChange" );

        ProcessGeneralThemeChange();

        }

    else if ( aState == EAiFwBackupRestoreStart || 

        aState == EAiFwBackupRestoreEnd )

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: EAiFwBackupRestoreStart/End" );

        ProcessBackupRestore( aState == EAiFwBackupRestoreStart );

        }

    else

        {

        __PRINTS( "CAiStateManager::NotifyStateChange, aState: Unknown" );

        }

    // State change evaluation and state change trial is done always here

    __PRINTS( "CAiStateManager::NotifyStateChange, Run state change" );    

    ProcessStateChange( EvaluateNextState() );            

    }

// ----------------------------------------------------------------------------

// CAiStateManager::NotifyLoadPlugin()

// 

// ----------------------------------------------------------------------------

//

TInt CAiStateManager::NotifyLoadPlugin( const THsPublisherInfo& aPublisherInfo,

    TAiFwLoadReason aReason )

    {                

    __PRINT( __DBG_FORMAT( 

        "CAiStateManager::NotifyLoadPlugin: name: %S, reason: %d " ), 

              &aPublisherInfo.Name(), (TInt) aReason );      

    __TIME_MARK( time );

    // Create plugin

    TInt retval( iFactory.CreatePlugin( aPublisherInfo ) );

    if ( retval == KErrNone )

        {

        CHsContentPublisher* plugin( iFactory.PluginByInfo( aPublisherInfo ) );

        // Do startup state transition    

        StartPlugin( *plugin, StartReason( aReason ) );            

        }

    __TIME_ENDMARK( "CAiStateManager::NotifyLoadPlugin, construction", time );

    return retval;

    }

// ----------------------------------------------------------------------------

// CAiStateManager::NotifyDestroyPlugin()

// 

// ----------------------------------------------------------------------------

//

void CAiStateManager::NotifyDestroyPlugin( 

    const THsPublisherInfo& aPublisherInfo, TAiFwDestroyReason aReason )    

    {

    __PRINT( __DBG_FORMAT( 

        "CAiStateManager::NotifyDestroyPlugin: name: %S, reason: %d " ), 

            &aPublisherInfo.Name(), (TInt)aReason );              

    __TIME_MARK( time );

    // Resolve plugin

    CHsContentPublisher* plugin( iFactory.PluginByInfo( aPublisherInfo ) );

    if ( plugin )

        {                  

        // Do shutdown state transition

        StopPlugin( *plugin, StopReason( aReason ) );

        // Destroy plugin

        iFactory.DestroyPlugin( aPublisherInfo );                                    

        }

    __TIME_ENDMARK( "CAiStateManager::DestroyPlugin, done", time );

    }

// ----------------------------------------------------------------------------

// CAiStateManager::NotifyUpdatePlugins()

// 

// ----------------------------------------------------------------------------

//

void CAiStateManager::NotifyUpdatePlugins()

    {

    __PRINTS( "CAiStateManager::NotifyUpdatePlugins" );

    RArray< THsPublisherInfo > publishers;

    // Get plugins which has upgrade available

    TRAP_IGNORE( iFactory.ResolvePluginsToUpgradeL( publishers ) );

    for ( TInt i = 0; i < publishers.Count(); i++ )

        {        

        THsPublisherInfo info( publishers[i] );

        // Update by destroy - load sequence 

        NotifyDestroyPlugin( info, EAiFwSystemShutdown );

        NotifyLoadPlugin( info, EAiFwSystemStartup );         

        }

    publishers.Reset();

    __PRINTS( "CAiStateManager::NotifyUpdatePlugins, done" );

    }

// ----------------------------------------------------------------------------

// CAiStateManager::OnlineStateInUse()

// 

// ----------------------------------------------------------------------------

//

TBool CAiStateManager::OnlineStateInUse() const

    {

    __PRINTS( "CAiStateManager::OnlineStateInUse" );        

    RPointerArray< CHsContentPublisher >& plugins( iFactory.Publishers() );

    for( TInt i = 0; i < plugins.Count(); i++ )

        {

        CHsContentPublisher* plugin( plugins[i] );

        if ( plugin->HasMenuItem( KOnlineOffline() ) )

            {

            return ETrue;

            }

        }

    return EFalse;

    }

// ----------------------------------------------------------------------------

// CAiStateManager::EvaluateNextState()

// 

// ----------------------------------------------------------------------------

//

CAiStateManager::TState CAiStateManager::EvaluateNextState() const

    {

    TState nextState( iCurrentState );

    if ( iFlags.IsSet( EIsForeground ) && iFlags.IsSet( EIsLightsOn ) )

        {

        nextState = EAlive;

        }

    else 

        {

        nextState = ESuspended;

        } 

    __PRINT( __DBG_FORMAT( 

        "CAiStateManager::EvaluateNextState: current state: %d, next state: %d" ), 

            (TInt)iCurrentState, (TInt)nextState );     

    return nextState;

    }

// ----------------------------------------------------------------------------

// CAiStateManager::ProcessStateChange()

// 

// ----------------------------------------------------------------------------

//

void CAiStateManager::ProcessStateChange( TState aNextState )

    {

    __PRINT( __DBG_FORMAT( 

            (TInt)iCurrentState, (TInt)aNextState, iHalt );     

    __TIME_MARK( time );

    if ( aNextState != iCurrentState )

        {

        // Update state

        iCurrentState = aNextState;

        RPointerArray< CHsContentPublisher >& plugins( iFactory.Publishers() );

        // Process state for all

        for( TInt i = 0; !iHalt && i < plugins.Count(); i++ )

            {

            CHsContentPublisher* plugin( plugins[i] );

            const THsPublisherInfo& info( plugin->PublisherInfo() );

            __PRINT( __DBG_FORMAT( 

                "CAiStateManager::ProcessStateChange: name: %S" ), &info.Name() ); 

            if ( iCurrentState == EAlive )

                {

                __TIME( "CAiStateManager::ProcessStateChange, EAlive", 

                plugin->Resume( CHsContentPublisher::EForeground ) );         

                }

            else if ( iCurrentState == ESuspended )

                {

                __TIME( "CAiStateManager::ProcessStateChange, ESuspended",

                plugin->Suspend( CHsContentPublisher::EBackground ) );

                }            

            }

        }

    else

        {

        __PRINTS( "CAiStateManager::ProcessStateChange, no state change" );

        }

    __TIME_ENDMARK( "CAiStateManager::ProcessStateChange, done", time );

    }

// ----------------------------------------------------------------------------

// CAiStateManager::ProcessGeneralThemeChange()

// 

// ----------------------------------------------------------------------------

//

void CAiStateManager::ProcessGeneralThemeChange()

    {

    __PRINTS( "CAiStateManager::ProcessGeneralThemeChange" );

    __TIME_MARK( time );

    RPointerArray< CHsContentPublisher >& plugins( iFactory.Publishers() );

    for( TInt i = 0; i < plugins.Count(); i++ )

        {

        CHsContentPublisher* plugin( plugins[i] );

        plugin->Suspend( CHsContentPublisher::EGeneralThemeChange );

        // Resume publisher immediately if in alive state 

        if( !iHalt && iCurrentState == EAlive )

            {

            plugin->Resume( CHsContentPublisher::EForeground );

            }        

        } 

    __TIME_ENDMARK( "CAiStateManager::ProcessGeneralThemeChange, done", time );

    }

// ----------------------------------------------------------------------------

// CAiStateManager::ProcessBackupRestore()

// 

// ----------------------------------------------------------------------------

//

void CAiStateManager::ProcessBackupRestore( TBool aStart )

    {

    __PRINTS( "CAiStateManager::ProcessBackupRestore" );

    __TIME_MARK( time );

    iHalt = aStart;

    RPointerArray< CHsContentPublisher >& plugins( iFactory.Publishers() );

    for( TInt i = 0; i < plugins.Count(); i++ )

        {

        CHsContentPublisher* plugin( plugins[i] );

        if ( aStart )

            {

            plugin->Suspend( CHsContentPublisher::EBackupRestore );

            }

        else

            {

            // Resume publisher immediately if in alive state

            if ( !iHalt && iCurrentState == EAlive )

                {

                plugin->Resume( CHsContentPublisher::EForeground );

                }

            }

        }

    __TIME_ENDMARK( "CAiStateManager::ProcessBackupRestore, done", time );

    }

// ----------------------------------------------------------------------------

// CAiStateManager::ProcessOnlineStateChange()

// 

// ----------------------------------------------------------------------------

//

void CAiStateManager::ProcessOnlineStateChange()

    {

    __PRINTS( "CAiStateManager::ProcessOnlineStateChange" );

    RPointerArray< CHsContentPublisher >& plugins( iFactory.Publishers() );

    for( TInt i = 0; i < plugins.Count(); i++ )

        {

        CHsContentPublisher* plugin( plugins[i] );

        if ( iFlags.IsSet( EIsOnline ) )

            {

            plugin->SetOnline();

            }

        else

            {

            plugin->SetOffline();

            }

        }               

    }

// ----------------------------------------------------------------------------

// CAiStateManager::StartPlugin()

// 

// ----------------------------------------------------------------------------

//

void CAiStateManager::StartPlugin( CHsContentPublisher& aPlugin,

    CHsContentPublisher::TStartReason aReason )

    aPlugin.Start( aReason );

    if ( iCurrentState == EAlive )

        {

        }

    else if ( iCurrentState == ESuspended )