/*

* Copyright (c) 2005 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:   Implementation file for class CScreenSaverAIWPlugin

*

*/

#include <eikmenup.h>

#include <f32file.h>

#include <e32property.h>

#include <AiwMenu.h>

#include <AiwCommon.h>

#include <AiwCommon.hrh>

#include <barsread.h>

#include <eikenv.h>

#include <implementationproxy.h>

#include <StringLoader.h>

#include <aknnotewrappers.h>

#include <data_caging_path_literals.hrh>

#include <screensaveraiwplugin.rsg>

#include <AknsSrvClient.h>

#include <imageconversion.h>

#include <centralrepository.h>

#include <ScreensaverInternalCRKeys.h>

#include <ScreensaverInternalPSKeys.h>

#include <pslninternalcrkeys.h> 

#include "ScreenSaverAnimPluginInternalCRKeys.h"

#include "screensaveraiwplugin.h"

#include "screensaveraiwplugin.rh"

_LIT(KResourceFileName, "screensaveraiwplugin.rsc");

_LIT(KDriveZ, "z:");

_LIT(KPluginUidAnimation, "[1020744D]25");  // '25' is the drive number (Z = ROM), not 

_LIT(KPluginUidSlideshow, "[102823ED]25");  // mandatory

_LIT(KScreenSaverAIWPluginMimeTypeImage, "image");

_LIT(KScreenSaverAIWPluginMimeTypeOTABitmap, "image/x-ota-bitmap");

_LIT(KScreenSaverAIWPluginSeparator, "/");

_LIT(KScreenSaverAIWPluginMimeTypeGIF, "image/gif");

_LIT(KScreenSaverAIWPluginMimeTypeSVG, "image/svg+xml");

_LIT(KScreenSaverAIWPluginMimeTypeM3G, "application/m3g");

_LIT(KScreenSaverAIWPluginMimeTypeSWF, "application/x-shockwave-flash");

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

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

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

// CScreenSaverAIWPlugin::NewL

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

//

CScreenSaverAIWPlugin* CScreenSaverAIWPlugin::NewL()

    {

    CScreenSaverAIWPlugin* self = new( ELeave ) CScreenSaverAIWPlugin;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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

// CScreenSaverAIWPlugin::CScreenSaverAIWPlugin

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

//

CScreenSaverAIWPlugin::CScreenSaverAIWPlugin():

    iConeResLoader(*CCoeEnv::Static())

    {

    }

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

// CScreenSaverAIWPlugin::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CScreenSaverAIWPlugin::ConstructL()

    {

    TParse parse;

    parse.Set(KResourceFileName, &KDC_RESOURCE_FILES_DIR, &KDriveZ);

    TFileName resourceFileName;

    resourceFileName.Append(parse.FullName());

    iConeResLoader.OpenL(resourceFileName);  

    }    

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

// CScreenSaverAIWPlugin::~CScreenSaverAIWPlugin

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

//

CScreenSaverAIWPlugin::~CScreenSaverAIWPlugin()

    {

    iConeResLoader.Close();

    iSupportedImageFiles.Close();

    delete iScreensaverRepository;

    delete iAnimationRepository;

    }

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

// From class CAiwServiceIfMenu.

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

//

void CScreenSaverAIWPlugin::InitialiseL(MAiwNotifyCallback& /*aFrameworkCallback*/,

    const RCriteriaArray& /*aInterest*/)

    {

    // Not needed.

    }

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

// From class CAiwServiceIfMenu.

//

// Implements setting the passed image(s) as screensaver.

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

//

void CScreenSaverAIWPlugin::HandleServiceCmdL(const TInt& aCmdId,

    const CAiwGenericParamList& aInParamList,

    CAiwGenericParamList& /*aOutParamList*/,

    TUint /*aCmdOptions*/,

    const MAiwNotifyCallback* aCallback)

    {

     // Handle only KAiwCmdAssignScreenSaver command.

    if ( aCmdId == KAiwCmdAssignScreenSaver )

        {

#ifdef CSCREENSAVERAIWPLUGIN_TRACES	

        DumpParamList(_L("HandleServiceCmdL"),aInParamList);

#endif

        // Leave, if there were not given all the required parameters

        ValidateParamListL(aInParamList);

        // Get the supported image files to iSupportedImageFiles

        GetSupportedImageFilesL(aInParamList,iSupportedImageFiles);

#ifdef CSCREENSAVERAIWPLUGIN_TRACES	

        DumpSupportedImageFileList(iSupportedImageFiles);

#endif

        TInt textResourceId = 0;        

        if (iSupportedImageFiles.Count() == 1 && IsAnimatedImageL(iSupportedImageFiles[0].iFileName,

                                                                  iSupportedImageFiles[0].iMimeType))

            {

            textResourceId = R_SCREEN_SAVER_AIW_PLUGIN_TEXT_IMAGE_AS_ANIMATION;

            SetAnimatedScreenSaverL(iSupportedImageFiles);

            }

        else

            {

            textResourceId = ((iSupportedImageFiles.Count() > 1)?R_SCREEN_SAVER_AIW_PLUGIN_TEXT_IMAGES_ADDED:

                                                               R_SCREEN_SAVER_AIW_PLUGIN_TEXT_IMAGE_ADDED);           

            SetSlideShowScreenSaverL(iSupportedImageFiles);

            }            

        //  display confirmation note

        DisplayInfoNoteL(textResourceId);              

        // If aCallback defined inform consumers that we have done with

        // the operation.

        if (aCallback)

            {

            // Cope with the design problems of AIW framework

            MAiwNotifyCallback* nonConstCallback =

            const_cast<MAiwNotifyCallback*> (aCallback);

            CAiwGenericParamList* eventParamList = CAiwGenericParamList::NewL();

            CleanupStack::PushL(eventParamList);

            nonConstCallback->HandleNotifyL(

        	    KAiwCmdAssignScreenSaver,

        	    KAiwEventCompleted,

        	    *eventParamList,

        	    aInParamList);

            CleanupStack::PopAndDestroy(eventParamList);

            }

        }

    }

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

// From class CAiwServiceIfMenu.

//

// Inserts plugin's menu items to aMenuPane.

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

//

void CScreenSaverAIWPlugin::InitializeMenuPaneL(CAiwMenuPane& aMenuPane,

    TInt aIndex,

    TInt /*aCascadeId*/,

    const CAiwGenericParamList& aInParamList)

    {        

#ifdef CSCREENSAVERAIWPLUGIN_TRACES	

        DumpParamList(_L("InitializeMenuPaneL"),aInParamList);        

#endif

	// Insert menu only if there is at least a single supported MIME type is given

	if ( AnyMimeTypeSupportedL(aInParamList) )   

		{

	    TResourceReader reader;

	    CCoeEnv::Static()->CreateResourceReaderLC(reader, R_SCREEN_SAVER_AIW_PLUGIN_MENU);

	    aMenuPane.AddMenuItemsL(reader, KAiwCmdAssignScreenSaver, aIndex);

	    CleanupStack::PopAndDestroy(); // reader

		}

    }

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

// From class CAiwServiceIfMenu.

//

// Implements menu command handling for EScreenSaverAIWPluginCmdSetScreenSaver.

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

//

void CScreenSaverAIWPlugin::HandleMenuCmdL(

	TInt aMenuCmdId,

    const CAiwGenericParamList& aInParamList,

    CAiwGenericParamList& aOutParamList,

    TUint aCmdOptions,

    const MAiwNotifyCallback* aCallback)

    {

    if (aMenuCmdId == EScreenSaverAIWPluginCmdSetScreenSaver)

        {

        // Menu commands are handled as service commands.

        HandleServiceCmdL(

            KAiwCmdAssignScreenSaver,

            aInParamList,

            aOutParamList,

            aCmdOptions,

            aCallback );

        }

    }

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

// Implements showing information note 

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

//

void CScreenSaverAIWPlugin::DisplayInfoNoteL(TInt aTextResourceId)

    {

    HBufC* text = StringLoader::LoadLC(aTextResourceId);

    CAknInformationNote* dlg = new (ELeave) CAknInformationNote(EFalse);

    dlg->ExecuteLD(*text);

    CleanupStack::PopAndDestroy(text);

    }

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

// Validates aParamList if it is not valid

// the method leaves with KErrArgument

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

//

void CScreenSaverAIWPlugin::ValidateParamListL(const CAiwGenericParamList& aParamList)

    {

    TBool valid = EFalse;

    // The parameter list must be dividable by 2 because the number of file name

    // items must be equal with the number of MIME type items.

    valid = !(aParamList.Count()%2); 

    valid = valid && AnyMimeTypeSupportedL(aParamList);

    if (valid)

        {

        TInt index = 0;

        TPtrC fileName = GetAiwParamAsDescriptor(index, aParamList, EGenericParamFile);

        // At least one file name parameter should be given

        valid = !(fileName == KNullDesC);

        }

    if (!valid)

        {

		User::Leave(KErrArgument);

        }    

    }

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

// Gets supported image file list from generic param list

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

//

void CScreenSaverAIWPlugin::GetSupportedImageFilesL(const CAiwGenericParamList& aParamList,

                                                    RArray<TImageFile>& aSupportedImageFiles)

    {    

    aSupportedImageFiles.Reset();

    for (TInt i = 0;; i++)

        {        

        TImageFile imageFile;

        TPtrC fileName = GetAiwParamAsDescriptor(i, aParamList, EGenericParamFile);

        if (fileName == KNullDesC)

            {

            // last file item is reached

            break;    

            }

        TPtrC mimeTypeString = GetAiwParamAsDescriptor(i, aParamList, EGenericParamMIMEType);

        if (mimeTypeString == KNullDesC)

            {

            // missing MIME type for file

            User::Leave(KErrArgument);    

            break;

            }

        else if (IsMimeTypeSupportedL(mimeTypeString))

            {

            imageFile.iFileName.Set(fileName);

            imageFile.iMimeType.Set(mimeTypeString);

            aSupportedImageFiles.Append(imageFile);

            }            

        }

    }

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

// Returns ETrue if any of the MIME types is supported

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

//

TBool CScreenSaverAIWPlugin::AnyMimeTypeSupportedL(const CAiwGenericParamList& aParamList)

    {

    TBool ret = EFalse;

    for (TInt i = 0;; i++)

        {

        TPtrC mimeTypeString = GetAiwParamAsDescriptor(i, aParamList, EGenericParamMIMEType);

        if (mimeTypeString == KNullDesC)

            {

            // If no MIME type parameters are passed just leave

            if (i <= 0)

                {

                User::Leave(KErrArgument);    

                }            

            break;

            }

        else if (IsMimeTypeSupportedL(mimeTypeString))

            {

            ret = ETrue;

            break;

            }            

        }

    return ret;

    }

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

// Implements checking if a given MIME type is supported or not

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

//

TBool CScreenSaverAIWPlugin::IsMimeTypeSupportedL(const TDesC& aMimeTypeString)

    {   

    // Check for a type separator in the string

    TInt pos = aMimeTypeString.Find(KScreenSaverAIWPluginSeparator);

    // Leave if no separator was found.. the MIME

    // standard requires it   

    if (pos == KErrNotFound)

        {

        User::Leave(KErrArgument);

        }

	// Construct the compare string    

    TPtrC compareString(aMimeTypeString.Left(pos));

	// Perform the comparison

    TBool ret = EFalse;

    // Mime type case:  IMAGE/* except IMAGE/X-OTA-BITMAP

    if (!compareString.CompareF(KScreenSaverAIWPluginMimeTypeImage) &&

         aMimeTypeString.CompareF(KScreenSaverAIWPluginMimeTypeOTABitmap))

        {

        ret = ETrue;

        }   

    if (!ret)         	   		    	

        {

        TBool dummy;

        ret = IsAnimatedMimeTypeL(aMimeTypeString,dummy);

        }

	return ret;    

    }    

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

// Determines if the MIME type is animated or not and in addition returns

// in aUseImageDecoder if image decoder should be used to determine if

// the image is really animated

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

//

TBool CScreenSaverAIWPlugin::IsAnimatedMimeTypeL( const TDesC& aMimeTypeString, TBool& aUseImageDecoder )

    {    

    TBool ret = EFalse;     

    aUseImageDecoder = EFalse; 

    // check if animated an needs image decoder

    if (!aMimeTypeString.CompareF(KScreenSaverAIWPluginMimeTypeGIF))

        {

        aUseImageDecoder = ETrue;

        ret = ETrue; 

        }

    else if (!aMimeTypeString.CompareF(KScreenSaverAIWPluginMimeTypeSVG) ||

             !aMimeTypeString.CompareF(KScreenSaverAIWPluginMimeTypeM3G) ||

             !aMimeTypeString.CompareF(KScreenSaverAIWPluginMimeTypeSWF))

        {

        ret = ETrue; 

        }

    return ret;

    }

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

// Implements getting a AIW parameter as descriptor

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

//    

TPtrC CScreenSaverAIWPlugin::GetAiwParamAsDescriptor(

        TInt& aIndex,

		const CAiwGenericParamList& aParamList,

		TGenericParamId aParamType)

	{	

	const TAiwGenericParam* genericParam = NULL;

    genericParam = aParamList.FindFirst( 

        aIndex,

        aParamType,

        EVariantTypeDesC);

    if (aIndex != KErrNotFound && genericParam)

        {

        // Get the data

        return genericParam->Value().AsDes();

        }

	else

    	{

		return KNullDesC();

    	}

	}

#ifdef CSCREENSAVERAIWPLUGIN_TRACES	

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

// Dump parameters in aParamList

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

//   

void CScreenSaverAIWPlugin::DumpParamList(const TDesC& aMethod, const CAiwGenericParamList& aParamList)

    {

    DumpParamList(aMethod,EGenericParamFile,aParamList);

    DumpParamList(aMethod,EGenericParamMIMEType,aParamList);

    }

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

// Dump parameters in aParamList for a given aParamType

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

//   

void CScreenSaverAIWPlugin::DumpParamList(const TDesC& aMethod,

                                          TGenericParamId aParamType,

                                          const CAiwGenericParamList& aParamList)

	{	

    for (TInt i = 0 ;; i++)

        {

        TPtrC paramString = GetAiwParamAsDescriptor(i, aParamList, aParamType);

        if (paramString == KNullDesC)

            {

            break;

            }

        else 

            {

            RDebug::Print( _L("ScreenSaverAIWPlugin: %x CScreenSaverAIWPlugin::%S: Index=%d, paramType=%d, paramString=%S"), this, &aMethod, i, aParamType, &paramString);

            }            

        }

	}    

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

// Dump supported image file list

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

//   

void CScreenSaverAIWPlugin::DumpSupportedImageFileList(const RArray<TImageFile>& aSupportedImageFiles)

	{	

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

        {

        RDebug::Print( _L("ScreenSaverAIWPlugin: %x DumpSupportedImageFileList: Index=%d, file=%S, MIME type=%S"), this, i, &aSupportedImageFiles[i].iFileName, &aSupportedImageFiles[i].iMimeType);

        }

	}    

#endif	    

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

// Determines if an image is animated or not

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

//

TBool CScreenSaverAIWPlugin::IsAnimatedImageL( const TDesC& aFileName,

                                               const TDesC& aMimeTypeString )

    { 

    TBool useImageDecoder = EFalse;

    TBool animated = IsAnimatedMimeTypeL( aMimeTypeString, useImageDecoder );

    if (useImageDecoder)

        {

        animated = IsReallyAnimatedImageL(aFileName);

        }

    return animated;

    }

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

// Determines if an image file is really animated or not

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

//

TBool CScreenSaverAIWPlugin::IsReallyAnimatedImageL( const TDesC& aFileName )

    {    

    CImageDecoder* decoder = CImageDecoder::FileNewL(CCoeEnv::Static()->FsSession(),aFileName);

    CleanupStack::PushL( decoder );

    TBool animated = (decoder->FrameCount() > 1);

    CleanupStack::PopAndDestroy(); // decoder

    return animated;

    }

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

// Set and activate slide-show screen saver.

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

//

void CScreenSaverAIWPlugin::SetSlideShowScreenSaverL( const RArray<TImageFile>& aSupportedImageFiles  )

    {

    StoreImageListToFileL(aSupportedImageFiles);

    if (iScreensaverRepository == NULL)

        {

        // Setting the screensaver type & plugin name 

        iScreensaverRepository = CRepository::NewL(KCRUidScreenSaver);

        }

    if (iSlideshowRepository == NULL)

        {

        iSlideshowRepository = CRepository::NewL(KCRUidThemes);