/*

* Copyright (c) 2006, 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#include <apmrec.h>

#include <apgcli.h>

#include <eikappui.h>

#include <eikenv.h>

#include <eikbtgpc.h>

#include <StringLoader.h>

#include <WidgetUi.rsg>

#include <avkon.hrh>

#include <aknmessagequerydialog.h>

#include <ActiveApDb.h>

#include <EscapeUtils.h>

#include <Uri16.h>

#include <BrCtlDefs.h>

#include "WidgetUiObserver.h"

#include "WidgetUiWindow.h"

#include "WidgetUiWindowView.h"

#include "WidgetUiWindowManager.h"

#include "WidgetUiWindowContainer.h"

#ifndef RD_PF_SEC_APPARC

#include <genericparam.h>

#else

#ifndef __BROWSER_SDK

#include "AiwGenericParam.h"

#endif

#endif

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES

// CONSTANTS

_LIT( KFileScheme, "file://" );

_LIT( KDefaultDrivePath, "C:\\" );

_LIT( KPathChar, "\\" );

_LIT( KLprojExt, ".lproj" );

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

TInt doTakeSnapshot( TAny* ptr );

// FORWARD DECLARATIONS

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

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

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

// CWidgetUiObserver::UpdateBrowserVScrollBarL

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

//

void CWidgetUiObserver::UpdateBrowserVScrollBarL(

    TInt aDocumentHeight,

    TInt aDisplayHeight,

    TInt aDisplayPosY )

    {

    (void)aDocumentHeight;

    (void)aDisplayHeight;

    (void)aDisplayPosY;

#ifdef _DEBUG

    _LIT(KUpdateScrollbar, "Document height = %d, Display height = %d, Display pos = %d");

    if ( iCanLog )

        {

        iFileLogger.WriteFormat( KUpdateScrollbar, aDocumentHeight, aDisplayHeight, aDisplayPosY );

        }

#endif

    }

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

// CWidgetUiObserver::UpdateBrowserHScrollBarL

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

//

void CWidgetUiObserver::UpdateBrowserHScrollBarL(

    TInt aDocumentWidth,

    TInt aDisplayWidth,

    TInt aDisplayPosX )

    {

    (void)aDocumentWidth;

    (void)aDisplayWidth;

    (void)aDisplayPosX;

#ifdef _DEBUG

    _LIT(KUpdateScrollbar, "Document width = %d, Display width = %d, Display pos = %d");

    if ( iCanLog )

        {

        iFileLogger.WriteFormat( KUpdateScrollbar, aDocumentWidth, aDisplayWidth, aDisplayPosX );

        }

#endif

    }

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

// CWidgetUiObserver::NotifyLayoutChange

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

//

void CWidgetUiObserver::NotifyLayoutChange( TBrCtlLayout aNewLayout )

    {

    (void)aNewLayout;

#ifdef _DEBUG

    _LIT(KUpdateLayout, "New layout is  %d");

    RDebug::Printf("CWidgetUiObserver::NotifyLayoutChange - beginning");

    if ( iCanLog )

        {

        iFileLogger.WriteFormat( KUpdateLayout, aNewLayout) ;

        }

#endif

    if( iWindow->WidgetMiniViewState() == EPublishStart )

        {

        //iWindow->PublishSnapShot();

        iCollectBitmapTimer->Cancel();

        iCollectBitmapTimer->Start(TCallBack(&doTakeSnapshot,iWindow));

        } 

    }

TInt doTakeSnapshot( TAny* ptr )

   {

   RDebug::Printf("CWidgetUiObserver::doTakeSnapshot");

    static_cast<CWidgetUiWindow*>(ptr)->PublishSnapShot(); 

    return EFalse;

    }

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

// CWidgetUiObserver::UpdateTitle

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

//

void CWidgetUiObserver::UpdateTitleL( const TDesC& /*aTitle*/ )

    {

    }

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

// CWidgetUiObserver::UpdateSoftkeyL

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

//

void CWidgetUiObserver::UpdateSoftkeyL( TBrCtlKeySoftkey aKeySoftkey,

                                      const TDesC& aLabel,

                                      TUint32 /*aCommandId*/,

                                      TBrCtlSoftkeyChangeReason aBrCtlSoftkeyChangeReason )

    {

    // ignore idle reason.  this comes when brctl calls for default softkey update

    if(aBrCtlSoftkeyChangeReason != EChangeReasonIdle)

        {

        if (aKeySoftkey == EKeyRight && aLabel.Length() == 0)

            {

            //reset right softkey to "Exit"

            if (!iSoftkeyExitStr)

                {

                    iSoftkeyExitStr = StringLoader::LoadL( R_WIDGETUI_SOFTKEY_EXIT );

                }

            iWindow->SetSoftKeyLabelL( aKeySoftkey, *iSoftkeyExitStr );

            }

        else if (aKeySoftkey == EKeyLeft && aLabel.Length() == 0)

            {

                if (!iLeftSoftkeyStr)

                    {

                        iLeftSoftkeyStr = StringLoader::LoadL(R_WIDGETUI_SOFTKEY_OPTION);

                    }

                iWindow->SetSoftKeyLabelL( aKeySoftkey, *iLeftSoftkeyStr );

            }

        else

            {

            iWindow->SetSoftKeyLabelL( aKeySoftkey, aLabel );

            }

        }

    }

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

// CWidgetUiObserver::HandleBrowserLoadEventL

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

//

void CWidgetUiObserver::HandleBrowserLoadEventL(

    TBrCtlDefs::TBrCtlLoadEvent aLoadEvent,

    TUint /*aSize*/,

    TUint16 /*aTransactionId*/ )

    {

    if (aLoadEvent == TBrCtlDefs::EEventLoadFinished)

        {

        iWindow->SetWidgetLoaded(ETrue);

        }

    }

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

// CWidgetUiObserver::ResolveEmbeddedLinkL

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

//

TBool CWidgetUiObserver::ResolveEmbeddedLinkL(const TDesC& aEmbeddedUrl,

                                              const TDesC& aCurrentUrl,

                                              TBrCtlLoadContentType aLoadContentType,

                                              MBrCtlLinkContent& aEmbeddedLinkContent)

    {

    (void)aCurrentUrl;

    (void)aLoadContentType;

#ifdef _DEBUG

    _LIT(KResolveEmbeddedLink, "Resolve embedded link  aEmbeddedUrl = :%s:, aCurrentUrl = :%s:, aLoadContentType = %d");

    if ( iCanLog )

        {

        iFileLogger.WriteFormat( KResolveEmbeddedLink, aEmbeddedUrl, aCurrentUrl, aLoadContentType );

        }

#endif

    if ( IsFileScheme( aEmbeddedUrl ) )

        {

        // DENY if accessing anything inside WidgetUI's private dir AND that file is not inside 

        // the widget's own "sandbox". We define an installed widget's "sandbox" to be anything

        // under e:/private/10282822/<widget ID>/

        // Convert URL form to a more friendly path form, with locale-specific subdirectory

        TFileName lprojName;

        iWindow->WindowManager().WidgetUIClientSession().GetLprojName( lprojName );

        TranslateURLToFilenameL( aEmbeddedUrl, lprojName ); 

        // TRUE if e:/private/10282822/*/* was requested. It may or may not be inside a widget's sandbox.

        TBool isInsidePrivateDir = ( iFileName && ( (*iFileName).FindF(iAppPrivatePath) == KMaxDriveName ) ) ? ETrue : EFalse; 

        HBufC* widgetPath = iWindow->WidgetPath();          // The widget's sandbox. Object not ours.

        // TRUE if e:/private/10282822/<widgetID>/foo.js was requested. This is INSIDE widget's sandbox

        TBool isSandboxed = ( iFileName && widgetPath && (*iFileName).FindF( *widgetPath ) == 0 ) ? ETrue : EFalse;

        if ( isInsidePrivateDir && !isSandboxed )

            {   //Acess denied!

            User::Leave(KErrAccessDenied);

            }

        if ( !isSandboxed )

            { // For files in Public areas, don't use localized subdirectory

            TranslateURLToFilenameL( aEmbeddedUrl, KNullDesC); 

            } 

        HBufC8* buf = ReadFileL( *iFileName);

        if ( !buf && isSandboxed )

            { // In case of failure, fall-back to generic/non-localized content

            TranslateURLToFilenameL( aEmbeddedUrl, KNullDesC );

            buf = ReadFileL( *iFileName);

            }

        if ( !buf )

            {

            User::Leave(KErrGeneral);  

            }

        CleanupStack::PushL( buf );

        HBufC* contentType = NULL;

        TPtrC p( NULL, 0 );

        contentType = RecognizeLC( *iFileName, *buf );

        aEmbeddedLinkContent.HandleResolveComplete( *contentType, p, buf );

        CleanupStack::PopAndDestroy( 2, buf ); // contentType, buf

        return ETrue;

        }

    return EFalse;

    }

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

// CWidgetUiObserver::ResolveLinkL

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

//

TBool CWidgetUiObserver::ResolveLinkL( const TDesC& aUrl, const TDesC& aCurrentUrl,

                                     MBrCtlLinkContent& aBrCtlLinkContent )

    {

    (void)aCurrentUrl;

#ifdef _DEBUG

    _LIT(KResolveLink, "Resolve embedded link  aUrl = :%s:, aCurrentUrl = :%s:");

    if ( iCanLog )

        {

        iFileLogger.WriteFormat( KResolveLink, aUrl, aCurrentUrl );

        }

#endif

    //Re-use existing logic upstairs to enforce inter-widget (and intra WidgetUI) security policies.

    return ResolveEmbeddedLinkL(aUrl, aCurrentUrl, ELoadContentTypeAny, aBrCtlLinkContent);

    }

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

// CWidgetUiObserver::CancelAll

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

//

void CWidgetUiObserver::CancelAll()

    {

#ifdef _DEBUG

    _LIT(KCancelAll, "All requests canceled");

    if ( iCanLog )

        {

        iFileLogger.WriteFormat( KCancelAll );

        }

#endif

    }

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

// CWidgetUiObserver::CWidgetUiObserver()

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

//

CWidgetUiObserver::CWidgetUiObserver( CWidgetUiWindow& aWindow )

    : iWindow( &aWindow ),

      iFileName( NULL )

    {

    }

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

// CWidgetUiObserver::ConstructL

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

//

void CWidgetUiObserver::ConstructL()

    {

#ifdef _DEBUG

    _LIT(KDir, "WidgetUi");

    _LIT(KFile, "WidgetUi.log");

    TInt err( 0 );

    err = iFileLogger.Connect();

    if ( err == KErrNone )

        {

        iFileLogger.CreateLog( KDir(), KFile(), EFileLoggingModeOverwrite );

        iCanLog = ETrue;

        }

#endif

    iHandler = CDocumentHandler::NewL( CEikonEnv::Static()->Process() ) ;

        // Get WidgetUI's private directory (e.g. c:/private/10282822/)

    iCollectBitmapTimer = CIdle::NewL(CActive::EPriorityLow);

    }

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

// CWidgetUiObserver::~CWidgetUiObserver

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

//

CWidgetUiObserver::~CWidgetUiObserver()

    {

#ifdef _DEBUG

    if ( iCanLog )

        {

        iFileLogger.CloseLog();

        iFileLogger.Close();

        }

#endif

    delete iFileName;

    delete iHandler;

    delete iSoftkeyExitStr;

    delete iLeftSoftkeyStr;

    delete iCollectBitmapTimer; 

    }

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

// CWidgetUiObserver::NewL

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

//

CWidgetUiObserver* CWidgetUiObserver::NewL( CWidgetUiWindow& aWindow )

    {

    CWidgetUiObserver* self = new(ELeave)CWidgetUiObserver( aWindow );

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(1, self);

    return self;

    }

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

// CWidgetUiObserver::IsFileScheme

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

//

TBool CWidgetUiObserver::IsFileScheme( const TDesC& aFileName )

    {

    if ( aFileName.Length()> 0 && aFileName.Ptr() )

        {

        if ( aFileName.FindF(KFileScheme) == 0 )

            {

            return ETrue;

            }

        else

            {//Check for paths are that not URI, but of the form..

             // c:/dir/foo.txt. This is to accomodate browser engine inconsistencies. 

            TUriParser16 parser;

            if( parser.Parse( aFileName ) == KErrNone )

                {

                TPtrC16 scheme = parser.Extract( EUriScheme );

                // As per the URI RFC, the part before : is the Scheme

                if ( scheme.Length() == (KMaxDriveName-1) ) 

                    {

                    return ETrue;

                    }

                }

            }

        }

    return EFalse;

    }

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

// CWidgetUiObserver::ReadFile

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

//

HBufC8* CWidgetUiObserver::ReadFileL( const TDesC& aFileName )

    {

    RFile file;

    if (KErrNone != file.Open( CCoeEnv::Static()->FsSession(), aFileName, EFileRead ) )

        {

        return NULL;

        }

    CleanupClosePushL( file );

    TInt size;

    User::LeaveIfError( file.Size( size ) );

    HBufC8* buf = HBufC8::NewLC( size );

    TPtr8 bufPtr( buf->Des() );

    User::LeaveIfError( file.Read( bufPtr ) );

    CleanupStack::Pop( buf );

    CleanupStack::PopAndDestroy( &file );

    return buf;

    }

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

// CWidgetUiObserver::RecognizeL

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

//

HBufC* CWidgetUiObserver::RecognizeLC( const TDesC& aFileName, const TDesC8& aData )

    {

    TDataRecognitionResult dataType;

    RApaLsSession apaSession;

    TInt ret;

    HBufC* contentTypeString = KNullDesC().AllocL();

    CleanupClosePushL(apaSession);

    User::LeaveIfError( apaSession.Connect() );

    // Ask the application architecture to find the file type

    ret = apaSession.RecognizeData( aFileName, aData, dataType );

    apaSession.Close();

    CleanupStack::PopAndDestroy(1, &apaSession);

    if ( ret == KErrNone &&

        ( dataType.iConfidence == CApaDataRecognizerType::ECertain ) ||

        ( dataType.iConfidence == CApaDataRecognizerType::EProbable ) )

        {

        // If the file type was found, try to match it to a known file type

        TPtrC8 mimeTypePtr = dataType.iDataType.Des8();

        TInt len = mimeTypePtr.Length() + 1;

        contentTypeString = HBufC::NewL( len );

        contentTypeString->Des().Copy( mimeTypePtr );

        contentTypeString->Des().ZeroTerminate();

        }

    CleanupStack::PushL( contentTypeString );

    return contentTypeString;

    }

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

// CWidgetUiObserver::TranslateURLToFilenameL

// Translate the file name from a URL to a valid file name in the system.

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

//

TBool CWidgetUiObserver::TranslateURLToFilenameL( const TDesC& aFileName, const TDesC& aLanguageDir )

    {

    // This function accepts URLs in the following format:

    // file://filename.xxx

    // file:///filename.xxx

    // file://c:/filename.xxx

    // file:///c:/filename.xxx

    // c:/dir/file.txt (the browser engine can send these too!)

    TInt count( 0 );

    TInt index( 0 );

    TBool drvLetter = EFalse;

    TUint16 c;

    HBufC* decodedUrl = EscapeUtils::EscapeDecodeL(aFileName);

    CleanupStack::PushL( decodedUrl );

    // Throw away the intial file:// part, if present

    TPtrC urlPtr( aFileName );

    if (urlPtr.FindF( KFileScheme) == 0 )

        {

        urlPtr.Set( decodedUrl->Mid( KFileScheme().Length() ) );    

        }

    // Make sure there are enough characters in the filename before

    // trying to check them

    count = urlPtr.Length() + aLanguageDir.Length() + KLprojExt().Length() + KPathChar().Length();

    if ( urlPtr.Length() > 0 ) //do nothing for trivial input

        {  

    // Skip the first '/' if there is one

    if ( urlPtr[0] == '/' )

        {

        urlPtr.Set( urlPtr.Mid( 1 ) );

        }

    // Is there a drive letter?