/*

 * Copyright (c) 2008-2009 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:    Updates CPS storage for downloads collection

 *

 */

// INCLUDE FILES

#include <mmf/common/mmfcontrollerpluginresolver.h>

#include <LiwServiceHandler.h>

#include <glxuistd.h>

#include <glxicons.mbg>   // Glx Icons

#include <glxcollectionplugindownloads.hrh>

#include <glxthumbnailattributeinfo.h>  // for KGlxMediaIdThumbnail

#include <glxattributecontext.h>

#include <glxthumbnailcontext.h>

#include <glxtracer.h>

#include <glxlog.h>         //  For Log

#include <mglxmedialist.h>       // for MGlxMediaList

#include <glxcollectiongeneraldefs.h>

#include <glxgallery.hrh>               // for KGlxGalleryApplicationUid

#include <glxmediaid.h>

#include <glxerrormanager.h>      

#include "glxcontentharvesterplugindownloads.h"

#include "glxcontentharvesterplugin.hrh"

#include "glxmapconstants.h"

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

LOCAL_C TInt TimerCallbackL( TAny* aPtr )

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::TimerCallbackL" );

    static_cast<CGlxContentHarvesterPluginDownloads*>(aPtr)->UpdateDataL();

    return KErrNone;

    }

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

// Constructor

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

//

CGlxContentHarvesterPluginDownloads::CGlxContentHarvesterPluginDownloads(

        MLiwInterface* aCPSInterface,

        MGlxContentHarvesterPlugin *aCHplugin )

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::CGlxContentHarvesterPluginDownloads" );

    iCPSInterface = aCPSInterface;

    SetCHPlugin(aCHplugin);

    }

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

// Symbian 2nd phase constructor can leave.

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

//

void CGlxContentHarvesterPluginDownloads::ConstructL()

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::ConstructL" );

    //Call the base class ConstructL,to create the default thumbnail

    CGlxContentHarvesterPluginBase::ConstructL(EMbmGlxiconsQgn_prop_image_notcreated);

    iPeriodic = CPeriodic::NewL( CActive::EPriorityLow );

    iThumbnailContext = CGlxThumbnailContext::NewL(&iThumbnailIterator);

    //Register/Subscribe with matrix menu for the notifications 

    GetInterfaceForNotificationL();

    SetupPublisherL(KItemIndexDownloads);

    RequestCpsNotificationL(KItemIndexDownloads);

    HandleStateChangeL(KItemIndexDownloads);

    }

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

// Two-phased constructor.

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

//

CGlxContentHarvesterPluginDownloads* CGlxContentHarvesterPluginDownloads::NewLC( 

        MLiwInterface* aCPSInterface,

        MGlxContentHarvesterPlugin *aCHplugin )

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::NewL" );

    CGlxContentHarvesterPluginDownloads* self = new ( ELeave ) CGlxContentHarvesterPluginDownloads( aCPSInterface,aCHplugin );

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

    }

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

// Destructor

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

//

CGlxContentHarvesterPluginDownloads::~CGlxContentHarvesterPluginDownloads()

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::~CGlxContentHarvesterPluginDownloads" );

    DestroyMedialist();

    if ( iPeriodic )

        {

        iPeriodic->Cancel();

        }

    delete iPeriodic;

    }

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

// CGlxContentHarvesterPluginDownloads::UpdateDataL()

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

//

void CGlxContentHarvesterPluginDownloads::UpdateDataL() 

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::UpdateDataL" );

    if(iMediaList && iMediaList->Count() && iPreviewItemCount.Count() )

        {

        GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::UpdateDataL(),iProgressIndex=%d",iProgressIndex);

        TInt ret = UpdateItem(iPreviewItemCount[iProgressIndex]);

        if(ret != KErrNotFound)

            {

            //Updates the thumbnail in the collection 

            UpdateDataInCPSL(ret);

            }

        else

            {

            UpdateDataInCPSL(GetBitmapHandle());

            }

        }

    else

        {

        // Show previous thumbnail until the new thumbnail is

		// fecthed.Added this check to avoid flicker

		if(iMediaList->Count() == 0)

			{

			//Don't Show the Thumbnail/Show nothing

			GLX_LOG_INFO("CGlxContentHarvesterPluginDownloads::UpdateDataL() --O");

			UpdateDataInCPSL(GetBitmapHandle());

			}

        }

    }

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

// CGlxContentHarvesterPluginDownloads::HandleNotifyL()

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

//

TInt CGlxContentHarvesterPluginDownloads::HandleNotifyL(

        TInt /* aCmdId*/,

        TInt/* aEventId */,

        CLiwGenericParamList& /*aEventParamList*/,

        const CLiwGenericParamList& /*aInParamList*/ )

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleNotifyL" );

    HandleStateChangeL(KItemIndexDownloads);

    return KErrNone;

    }

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

// CGlxContentHarvesterPluginDownloads::HandleItemChanged()

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

//

void CGlxContentHarvesterPluginDownloads::HandleItemChanged()

    {

    TRACER("CGlxContentHarvesterPluginDownloads::HandleItemChanged");

    iProgressIndex = 0;

    iPreviewItemCount.Reset();

    TSize gridIconSize = GetGridIconSize();

    TMPXAttribute thumbnailAttribute(KGlxMediaIdThumbnail, 

            GlxFullThumbnailAttributeId( ETrue,  gridIconSize.iWidth, gridIconSize.iHeight ) );

    if(iMediaList)  

        {

        TInt count = iMediaList->Count();

        GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads:: HandleItemChanged ,count=%d",count);

        TBool inFocus = IsFocused();

        for(TInt aItemIndex = 0; aItemIndex < count; aItemIndex++)

            {

            const TGlxMedia& item = iMediaList->Item( aItemIndex );

            const CGlxThumbnailAttribute* value = item.ThumbnailAttribute( thumbnailAttribute );

            if (value)

                {

                iPreviewItemCount.InsertInOrder(aItemIndex);

                if(!inFocus)

                    {

                    //if the collection is not in Focus,retrive only one thumbnail and break

                    GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::HandleItemChanged,Range=1,aItemIndex=%d",aItemIndex);

                    break;

                    }

                else if(iPreviewItemCount.Count() == KPreviewThumbnailFetchCount ||

                        iPreviewItemCount.Count() == count )

                    {

                    //if the collection is not in Focus,retrive 15 thumbnail and break

                    GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::HandleItemChanged,Range=15,aItemIndex=%d",aItemIndex);

                    break;

                    }

                }

            }

        }

    }

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

// CGlxContentHarvesterPluginDownloads::UpdateDataInCPSL()

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

//  

void CGlxContentHarvesterPluginDownloads::UpdateDataInCPSL(TInt aHandle) 

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::UpdateDataInCPSL" );

    //update data in CPS

    _LIT(KExamplePluginPub,"photossuite");

    _LIT(KContentActivation,"downloads");

    _LIT(KContId1,"category1");

    if(iCPSInterface && iMediaList )

        {

        CLiwGenericParamList* inParamList = CLiwGenericParamList::NewLC();

        CLiwGenericParamList* outParamList = CLiwGenericParamList::NewLC();

        FillInputListWithDataL(inParamList, KExamplePluginPub, KContentActivation , 

                KContId1, aHandle);

        iCPSInterface->ExecuteCmdL( KAdd,  *inParamList, *outParamList );

        CleanupStack::PopAndDestroy(outParamList);

        CleanupStack::PopAndDestroy(inParamList);

        }

    }

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

// CGlxContentHarvesterPluginDownloads::UpdateItem()

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

//

TInt CGlxContentHarvesterPluginDownloads::UpdateItem(TInt aItemIndex)

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::UpdateItem" );

    const TGlxMedia& item = iMediaList->Item(aItemIndex);

    TSize gridIconSize = GetGridIconSize();

    TMPXAttribute thumbnailAttribute(KGlxMediaIdThumbnail, 

            GlxFullThumbnailAttributeId( ETrue,  gridIconSize.iWidth, gridIconSize.iHeight ) );

    GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::UpdateItem,aItemIndex=%d ",aItemIndex);

    const CGlxThumbnailAttribute* value = item.ThumbnailAttribute( thumbnailAttribute );

    if (value)

        {

        GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::UpdateItem,iProgressIndex=%d ",iProgressIndex);

        iProgressIndex++;

        if (iProgressIndex >= KPreviewThumbnailFetchCount || 

                iProgressIndex >= iPreviewItemCount.Count() ||

                iProgressIndex >= iMediaList->Count())

            {

            iProgressIndex = 0;

            }

        return value->iBitmap->Handle();

        }

    return KErrNotFound;

    }

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

// CGlxContentHarvesterPluginDownloads::ActivateL()

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

//

void CGlxContentHarvesterPluginDownloads::ActivateL( TBool aOn )

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::ActivateL" );

    GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::ActivateL aOn =%d",aOn);

    SetFocus(aOn);

    if (IsMatrixMenuInForegroundL() && aOn && !iPeriodic->IsActive() )

        {

        if(GetCHPlugin()->IsRefreshNeeded())

            {

            //Update the rest of all the collections on receving the focus...

            GetCHPlugin()->UpdatePlugins(aOn);          

            }

        else

            {

            //As the collection is not updated by the contentharvester plugin

            //to update the thumbnails on the focus , need to call the below function

            UpdatePreviewThumbnailListL();

            }

        iPeriodic->Start( KTimerInterval, 

                KTimerInterval, 

                TCallBack( TimerCallbackL, this ) );

        }

    else if ( !aOn )

        {

       if(!IsMatrixMenuInForegroundL())

            {

            //use case:Matrix Menu is exited, by entering into grid view,application view,capture mode...

            //Need to destroy all the collection's observers and context

            GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::ActivateL !aOn =%d and matrix not in foreground",aOn);

            GetCHPlugin()->UpdatePlugins(aOn);

            }

        iPeriodic->Cancel();

        }

    }

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

// CGlxContentHarvesterPluginDownloads::HandleItemAddedL

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

//

void CGlxContentHarvesterPluginDownloads::HandleItemAddedL(TInt /*aStartIndex*/, TInt /*aEndIndex*/, 

        MGlxMediaList* /*aList*/)

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleItemAddedL" );

    }

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

// CGlxContentHarvesterPluginDownloads::HandleMediaL

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

//

void CGlxContentHarvesterPluginDownloads::HandleMediaL(TInt /*aListIndex*/, 

        MGlxMediaList* /*aList*/)

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleMediaL" );

    } 

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

// CGlxContentHarvesterPluginDownloads::HandleItemRemovedL

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

//

void CGlxContentHarvesterPluginDownloads::HandleItemRemovedL(TInt /*aStartIndex*/, 

        TInt /* aEndIndex */, MGlxMediaList* /*aList*/)

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleItemRemovedL" );

    }

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

// CGlxContentHarvesterPluginDownloads::HandleItemModifiedL

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

//

void CGlxContentHarvesterPluginDownloads::HandleItemModifiedL(

        const RArray<TInt>& /*aItemIndexes*/, 

        MGlxMediaList* /*aList*/)

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleItemModifiedL" );

    }

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

// CGlxContentHarvesterPluginDownloads::HandleAttributesAvailableL

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

//

void CGlxContentHarvesterPluginDownloads::HandleAttributesAvailableL(TInt aItemIndex, 

        const RArray<TMPXAttribute>& aAttributes, MGlxMediaList* aList)

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleAttributesAvailableL" );

    TSize gridIconSize = GetGridIconSize();

    TMPXAttribute thumbnailAttribute(KGlxMediaIdThumbnail, 

            GlxFullThumbnailAttributeId( ETrue,  gridIconSize.iWidth, gridIconSize.iHeight ) );

    TIdentityRelation< TMPXAttribute > match ( &TMPXAttribute::Match );

    GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::HandleAttributesAvailableL =%d ",aItemIndex);

    if (KErrNotFound != aAttributes.Find( thumbnailAttribute, match ))

        {

        const TGlxMedia& item = aList->Item( aItemIndex );

        const CGlxThumbnailAttribute* value = item.ThumbnailAttribute( thumbnailAttribute );

        if (value)

            {

            GLX_LOG_INFO("CGlxContentHarvesterPluginDownloads::HandleAttributesAvailableL Thumbnail is present ");

            iPreviewItemCount.InsertInOrder(aItemIndex);

            //if the collection on the matrix menu is not focused,then show only one thumbnail

            if(!IsFocused())

                {

                GLX_LOG_INFO("CGlxContentHarvesterPluginDownloads::HandleAttributesAvailableL,one thumbnail fetched");

                UpdateDataInCPSL( value->iBitmap->Handle());

                //if one thumbnail is fetched,it is sufficent when the collection is not in focus.

                //remove the observer as client need not listen to the callbacks

                iMediaList->RemoveMediaListObserver( this );

                }

            else if (iPreviewItemCount.Count()  == KPreviewThumbnailFetchCount || 

                    iPreviewItemCount.Count() == aList->Count() )

                {

                //if the PreviewItemCount  equals 15 or if it is eqaul to the total count

                //remove the observer as client need not listen to the callbacks 

                GLX_LOG_INFO1("CGlxContentHarvesterPluginDownloads::HandleAttributesAvailableL,media list count=%d",aList->Count());

                iMediaList->RemoveMediaListObserver( this );

                }

            }//end of  check against value 

        }//end of  attribute match

    }

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

// CGlxContentHarvesterPluginDownloads::HandleFocusChangedL

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

//

void CGlxContentHarvesterPluginDownloads::HandleFocusChangedL(

        NGlxListDefs::TFocusChangeType /*aType*/, 

        TInt /*aNewIndex*/, 

        TInt /*aOldIndex*/, 

        MGlxMediaList* /*aList*/)

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleFocusChangedL" );

    }

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

// CGlxContentHarvesterPluginDownloads::HandleItemSelectedL

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

//

void CGlxContentHarvesterPluginDownloads::HandleItemSelectedL(TInt /*aIndex*/, 

        TBool /*aSelected*/, 

        MGlxMediaList* /*aList*/)

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleItemSelectedL" );

    }

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

// CGlxContentHarvesterPluginDownloads::HandleMessageL

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

//

void CGlxContentHarvesterPluginDownloads::HandleMessageL(const CMPXMessage& /*aMessage*/, 

        MGlxMediaList* /*aList*/)

    {

    // Do nothing

    TRACER( "CGlxContentHarvesterPluginDownloads::HandleMessageL" );

    }   

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

// CGlxContentHarvesterPluginDownloads::DestroyMedialistL

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

//

void CGlxContentHarvesterPluginDownloads::DestroyMedialist()

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::DestroyMedialist" );

    if( iMediaList )

        {

        RemoveContextAndObserver();

        delete iThumbnailContext;

        iThumbnailContext = NULL;

        iMediaList->Close();

        iMediaList = NULL;

        }

    }

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

// CGlxContentHarvesterPluginDownloads::CreateMedialistL

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

//

void CGlxContentHarvesterPluginDownloads::CreateMedialistL( )

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::CreateMedialistL" );

    if(!iMediaList)

        {

        //if the collection is in focus then , create media list with context of 15 items else

        // with context of single item.

        if(IsFocused())

            {

            iThumbnailIterator.SetRange( KPreviewThumbnailFetchCount ); 

            }

        else

            {

            iThumbnailIterator.SetRange( KSinglePreviewThumbnail );

            }

        iMediaList = CreateMedialistAndThumbnailContextL( TGlxMediaId( 

                KGlxCollectionPluginDownloadsImplementationUid ),iThumbnailContext);

        AddContextAndObserverL();

        }

    }

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

// CGlxContentHarvesterPluginDownloads::UpdatePreviewThumbnailListL

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

//

void CGlxContentHarvesterPluginDownloads::UpdatePreviewThumbnailListL( )

    {

    TRACER( "CGlxContentHarvesterPluginDownloads::UpdatePreviewThumbnailListL" );

    //when there is an update of content in the collection

    //this function is executed or when the collection recives the focus. 

    if(!iMediaList)

        {

        //medis list is not created yet,create it.

        CreateMedialistL( );

        //This is called to show the preview thumbnails. If no thumbnails are

        //present, display nothing 

        UpdateDataL();

        }

    else if(IsFocused())

        {

        //1.This loop is executed,when the collection gets focus

        //2.This loop is executed,when the contents are updated for this collection

        //and this collection has focus,so 15 thumbnails are fetched.

        HandleItemChanged();

        iThumbnailIterator.SetRange( KPreviewThumbnailFetchCount );

        RemoveContextAndObserver();

        AddContextAndObserverL();

        }

    else

        {

        //1.This loop is executed,when the contents are updated for this collection

        //and this collection doesn't have the focus,so only one thumbnail is fetched.

        //here we need to fetch only one item 

        //1.if the content is deleted,then creating a context doesn't fetch the attributes

        //2.if the content is added and the content is not the latest as per the sorted order of the

        // media list,then the thumbnails are not fetched.

        // so show the first available thumbnail in the media list.

        HandleItemChanged();

        UpdateDataL();

        //Adding the context doesn't gaurantee we get a call back for

        //Handle attributes available,if the latest item is already fetched.

        //and for the content added for this collection,if it is not latest

        //we will not recieve the attributes .so show the first available thumbnail 

        //in the media list.if there is any new latest content added,the thumbnail will be 

        //fetched and shown.

        iThumbnailIterator.SetRange( KSinglePreviewThumbnail );

        RemoveContextAndObserver();

        AddContextAndObserverL();