/*

* Copyright (c) 2006 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:  CCSXHHtmlTopicContainer class definition

*

*/

#include "CSXHHtmlTOC2.h"

#include "CSXHHtmlTOC1.h"

#include "CSXHDocument.h"

#include "CSXHAppUi.h"

#include "CSXHHtmlTopicView.h"

#include "CSXHViewIDs.h"

#include <cshelp.rsg>

#include "CsHelp.hrh"

#include "CSXHHtmlTopicContainer.h"

#include "AppLauncherForCSXH.h"

#include "csxhconstants.h"

#include <brctlinterface.h>

#include <browserlauncher.h>

#include <brctldefs.h>

#include <coemain.h>

#include <AknUtils.h>

#include <akntitle.h>

#include <aknnotewrappers.h> 

#include <AknGlobalNote.h>

#include <apmrec.h>

#include <apgcli.h>

#include <zipfile.h> 

#include <utf.h>

#include <charconv.h>

#include <bautils.h>

_LIT(KContentType,"text/html");

_LIT(KCsstextToRemovePathinfo,"<style>\n #APP_LAUNCH_LINK{display:none}\n</style>");

// Standard construction sequence

CCSXHHtmlTopicContainer* CCSXHHtmlTopicContainer::NewL(const TRect& aRect,CCSXHDocument 

&aDocument,CCSXHHtmlTopicView *aView)

    {

    CCSXHHtmlTopicContainer* self = CCSXHHtmlTopicContainer::NewLC(aRect,aDocument,aView);

    CleanupStack::Pop(self);

    return self;

    }

CCSXHHtmlTopicContainer* CCSXHHtmlTopicContainer::NewLC(const TRect& aRect,CCSXHDocument 

&aDocument,CCSXHHtmlTopicView *aView)

    {

    CCSXHHtmlTopicContainer* self = new (ELeave) CCSXHHtmlTopicContainer(aDocument,aView);

    CleanupStack::PushL(self);

    self->ConstructL(aRect);

    return self;

    }

CCSXHHtmlTopicContainer::CCSXHHtmlTopicContainer(CCSXHDocument &aDocument,CCSXHHtmlTopicView *aView)

        : iTopic(NULL),iDocument(aDocument),iView(aView)

        ,iAppLauncher(NULL), iLoadHtml(EFalse), iPrevPageCount(0), iBack(EFalse)

    {

    // no implementation required

    }

CCSXHHtmlTopicContainer::~CCSXHHtmlTopicContainer()

    {

    if(iBrCtrl)

        {

        iBrCtrl->SetFocus(EFalse);

        iBrCtrl->RemoveLoadEventObserver(this);

        delete iBrCtrl;

        iBrLibrary.Close();

        }

    if(iAppLauncher)

    	{

    	delete iAppLauncher;

    	}     

    }

void CCSXHHtmlTopicContainer::ConstructL(const TRect& aRect)

    {

    // Create a window for this application view

    CreateWindowL();

    // Set the windows size

    SetRect(aRect);

    if(KErrNone != iBrLibrary.Load(_L("BrowserEngine.dll")))

    	{

       	HBufC* ErrorMessage = CCSXHAppUi::GetCoeEnv()->AllocReadResourceLC(

    				R_CSHELP_RETRIEVE_NO_MEMORY_TEXT);      

    	CAknGlobalNote* note = CAknGlobalNote::NewLC();

    	note->ShowNoteL(EAknGlobalInformationNote, *ErrorMessage);

    	CleanupStack::PopAndDestroy(note); 

    	CleanupStack::PopAndDestroy(ErrorMessage); 

    	iDocument.SetDisplayTopic(iDocument.GetPrevTopic());

		CCSXHAppUi::GetInstance()->HandleCommandL(ECSXHOpenItem);

		User::Leave(KErrNoMemory);

    	}     

#ifdef __WINS__    

    TLibraryFunction result = iBrLibrary.Lookup(10); 

#else

    TLibraryFunction result = iBrLibrary.Lookup(1);   

#endif    

	FuncPtr_CreateBrowserControlL fptr  = (FuncPtr_CreateBrowserControlL)result;

    iBrCtrl = (*fptr)(

                    this,aRect,

                    TBrCtlDefs::ECapabilityDisplayScrollBar|

                    TBrCtlDefs::ECapabilityClientResolveEmbeddedURL|

#ifndef __SERIES60_30__                                 

                    TBrCtlDefs::ECapabilityCursorNavigation|

                    TBrCtlDefs::ECapabilityWebKitLite|

#endif                                  

                    TBrCtlDefs::ECapabilityClientNotifyURL,

                    TBrCtlDefs::ECommandIdBase,this,this,NULL,this

                    );

    iBrCtrl->SetBrowserSettingL(TBrCtlDefs::ESettingsCSSFetchEnabled,1);    

    iBrCtrl->AddLoadEventObserverL(this);   

    SetSelectedFontSizeL(iView->GetCurrentFontSize());

    iBrCtrl->MakeVisible(ETrue);

    ActivateL();

    }

void CCSXHHtmlTopicContainer::Draw(const TRect& /*aRect*/) const

    {

    CWindowGc& gc = SystemGc();

    TRect rect = Rect();

    gc.Clear(rect);    

    }

void CCSXHHtmlTopicContainer::SetAndLoadInitialTopicL(CCSXHHtmlTOC2* aTopic)

	{

	iTopic = aTopic;

	TRAPD(err,LoadHtmlL());

    if( KErrNone != err )

	    {

	    HBufC* ErrorMessage = CCSXHAppUi::GetCoeEnv()->AllocReadResourceLC(

    				R_CSHELP_RETRIEVE_NO_MEMORY_TEXT);      

    	CAknGlobalNote* note = CAknGlobalNote::NewLC();

    	note->ShowNoteL(EAknGlobalInformationNote, *ErrorMessage);

    	CleanupStack::PopAndDestroy(note); 

    	CleanupStack::PopAndDestroy(ErrorMessage); 

    	iDocument.SetDisplayTopic(iDocument.GetPrevTopic());

		CCSXHAppUi::GetInstance()->HandleCommandL(ECSXHOpenItem);

		User::Leave(KErrNoMemory);	    

	    }

	}

void CCSXHHtmlTopicContainer::LoadHtmlL()

    {

    HBufC8 *htmlBuffer = STATIC_CAST(HBufC8*,iTopic->GetTopicContentL());

    if(htmlBuffer)

        {

        CleanupStack::PushL(htmlBuffer);

        TUid uid;

        uid.iUid = KCharacterSetIdentifierIso88591;

        _LIT8(KContentType,"text/html");

        TDataType dataType(KContentType());

        iTopic->GetHtmlUrlL(iUrlNoAnchors);

        iBack = EFalse;

        ClearHistoryL();

        iLoadHtml = ETrue;

        //RUNTIME

        //if it is context sensitive launch, Add CSS content to remove

        //Application launch link.

        if(iView->GetViewType() == CCSXHHtmlTopicView::EContextHtmlView)

	        {

	        HBufC8* ContextHtmlbuffer = HBufC8::NewLC(htmlBuffer->Size() + 100);

	        TPtr8 bufferPtr = ContextHtmlbuffer->Des();

	        bufferPtr.Copy(KCsstextToRemovePathinfo);

	        bufferPtr.Append(htmlBuffer->Des());

	        iBrCtrl->LoadDataL(iUrlNoAnchors,*ContextHtmlbuffer,dataType,uid);	

	    	CleanupStack::PopAndDestroy(ContextHtmlbuffer);    	

	        }

        else

	        {

	        iBrCtrl->LoadDataL(iUrlNoAnchors,*htmlBuffer,dataType,uid);	

	        }

        CleanupStack::PopAndDestroy(htmlBuffer);

        }

    else

        {

        iTopic->GetHtmlUrlL(iUrlNoAnchors);

        iBrCtrl->LoadUrlL(iUrlNoAnchors);

        }

    CheckForMSK();  

    }

TKeyResponse CCSXHHtmlTopicContainer::OfferKeyEventL(const TKeyEvent &  

aKeyEvent,TEventCode  aType )

    {

    TKeyResponse result(EKeyWasNotConsumed);

    if ((aKeyEvent.iCode == EKeyEnter )&& (aType == EEventKey)

    	&& (IsHyperLinkFocused()))

        { 

        HandleCommandOpenHyperLinkL();

        CheckForMSK();

        return EKeyWasConsumed; 

        }

    if(iBrCtrl)

        {

        result = iBrCtrl->OfferKeyEventL(aKeyEvent, aType);        

		CheckForMSK();

		}       

    return result;  

    }

TInt CCSXHHtmlTopicContainer::CountComponentControls() const

    {

    return 1; 

    }

CCoeControl* CCSXHHtmlTopicContainer::ComponentControl(TInt aIndex) const

    {

    switch (aIndex)

        {

        case 0:

            return iBrCtrl;

        default:

            return NULL;

        }

    }

void CCSXHHtmlTopicContainer::HandleResourceChange(TInt aType)

    {

    CCSXHAppUi::GetInstance()->PropagateResourceChange(aType); 

    }

void CCSXHHtmlTopicContainer::HandleResourceChangeImpl(TInt aType)

    {

    if (aType == KEikDynamicLayoutVariantSwitch)

        {

        iBrCtrl->HandleResourceChange(aType);

        TRect mainRect; 

        TRect statusPaneRect;

        AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane,mainRect);

        SetRect(mainRect);

            if(iBrCtrl)

#ifndef __SERIES60_30__             

                iBrCtrl->SetRect(Rect());

#else                       

                iBrCtrl->SetRect(mainRect);

#endif              

        DrawNow();

        }

    else

        {

        CCoeControl::HandleResourceChange(aType);   

        }

    }

void CCSXHHtmlTopicContainer::SizeChanged()

    {

#ifndef __SERIES60_30__ 

    if(iBrCtrl)

#endif  

    }

void CCSXHHtmlTopicContainer::HandleCommandBackL()

    {

    iBrCtrl->HandleCommandL(TBrCtlDefs::ECommandIdBase + TBrCtlDefs::ECommandBack);

    }

TBool CCSXHHtmlTopicContainer::IsPrevPageAvbl()

    {

    if (iPrevPageCount > 0)

      	{

      	return ETrue;

      	}

     else

      	{

      	return EFalse;

      	}

    } 

void CCSXHHtmlTopicContainer::ClearHistoryL()

    {

    iBrCtrl->HandleCommandL(TBrCtlDefs::ECommandIdBase + TBrCtlDefs::ECommandClearHistory);

    iPrevPageCount = 0;

    }

TBool CCSXHHtmlTopicContainer::ResolveEmbeddedLinkL(const TDesC& /*aEmbeddedUrl*/,

                                           const TDesC& /*aCurrentUrl*/,

                                           TBrCtlLoadContentType /*aLoadContentType*/, 

                                           MBrCtlLinkContent& /*aEmbeddedLinkContent*/)

    {

    return EFalse;

    }

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

// Handling for

// 1) Compressed HTML content

// 2) Application Launch Links

// 3) External Hyperlinks

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

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

                                   MBrCtlLinkContent& aBrCtlLinkContent)

    {

#ifdef FF_HELP_TUTORIAL_MERGE

    if( KErrNotFound != aUrl.Find( KTutorialFileExtn ))

        {

        iView->LaunchTutorial();

        return ETrue;

        }

#endif // FF_HELP_TUTORIAL_MERGE

    if(NULL == iAppLauncher)

		{

		iAppLauncher = AppLauncherForCSXH::NewL();	

		}

        //Handling for application launch.

    if(iAppLauncher->LaunchAppL(aUrl,aCurrentUrl))

        return ETrue;//Link is resolved locally.

    if(CheckForExternalLinkL(aUrl))     

        return ETrue;//Link is resolved locally.

    //Remove the Anchor, if any     

    TInt DotPos = aUrl.LocateReverseF('.');

    TInt HashPos = aUrl.LocateReverseF('#');

    if(KErrNotFound != HashPos && HashPos > DotPos )

        {

        //Direct assignment does not work

        iUrlNoAnchors.Copy(KEmptyString);

        iUrlNoAnchors.Append(aUrl.Mid(0,HashPos));

        }

    else

        {

        //Direct assignment does not work

        iUrlNoAnchors.Copy(KEmptyString);

        iUrlNoAnchors.Append(aUrl);

        }   

    HBufC8 *htmlBuffer = CCSXHHtmlTOC2::GetContentsFromUrlL(iUrlNoAnchors,CCSXHAppUi::GetCoeEnv(),iFeatureControl);

    if(htmlBuffer)

        {

        TPtrC p(NULL,0);

        aBrCtlLinkContent.HandleResolveComplete(KContentType,p,htmlBuffer);

        delete htmlBuffer;

        iLoadHtml = EFalse;

        if (iBack)

        	{

        	iPrevPageCount--;

        	iBack = EFalse;

        	}

        else

        	{

            iPrevPageCount++;

        	}

        return ETrue;//Link is resolved locally.    

        }

    return  EFalse;

    }

void CCSXHHtmlTopicContainer::CancelFetchL()

    {

    if (iBrCtrl)

        {

        iBrCtrl->HandleCommandL(

        	    		(TInt)TBrCtlDefs::ECommandCancelFetch + (TInt)TBrCtlDefs::ECommandIdBase ); 

        }

    }

void CCSXHHtmlTopicContainer::CancelAll()

    {

    }

void CCSXHHtmlTopicContainer::HandleResolveComplete(const TDesC& /*aContentType*/,

                                           const TDesC& /*aCharset*/,

                                           const HBufC8* /*aContentBuf*/)

    {

    }

void CCSXHHtmlTopicContainer::HandleResolveError(TInt /*aError*/)

    {

    }

void CCSXHHtmlTopicContainer::RefreshL(CCSXHHtmlTOC2 *aTopic)

    {

  	SetAndLoadInitialTopicL(aTopic);

    }

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

// This callback function is used for the following

// 1) When an HTML page is loaded, this callback function will be called. If 

// this callback is invoked for hyperlink navigation, then the display topic

// has to be updated. For example, the Application Topics option menu is

// dependent on the dipslay topic.

// 2) Updation of the softkey from Options-Close to Options-Back (& Vice-Versa)

// in the context view as a result of hyperlink traveral

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

void CCSXHHtmlTopicContainer::HandleBrowserLoadEventL(TBrCtlDefs::TBrCtlLoadEvent aLoadEvent, 

                                    TUint /*aSize*/, TUint16 /*aTransactionId*/)

    {

    if(aLoadEvent == TBrCtlDefs::EEventLoadFinished)

        {

        if ( IsVisible() )

             {

               HBufC* title = iBrCtrl->PageInfoLC(TBrCtlDefs::EPageInfoTitle);

               if(!title)

                   {

                   CleanupStack::PopAndDestroy(title);

                   return;

                   }

               //Update the title bar

               CEikStatusPane* sp = CCSXHAppUi::GetInstance()->StatusPane();

               CAknTitlePane* titlePane = STATIC_CAST(CAknTitlePane*, 

               sp->ControlL(TUid::Uid(EEikStatusPaneUidTitle)));

               titlePane->SetTextL(*title);

               CleanupStack::PopAndDestroy(title);

             }

        //For the context sensitive view, the softkey texts need to be changed.

        //add label iLoadHtml for ESNN-7N9CLN.If the html is opened by 

        //loadHtmlL, the iLoadHtml will be set to ETrue, which 

        //can guarantee the RSK keep as "CLOSE" when context is sensitive.

        if ((!iLoadHtml) && (iView->GetViewType() == CCSXHHtmlTopicView::EContextHtmlView))

        {  

            iView->SetViewTypeL(IsPrevHtmlPageAvblL() ? 

                    CCSXHHtmlTopicView::EHtmlView : CCSXHHtmlTopicView::EContextHtmlView);

        }

        //TSW Error:TKOI-74KE89: Help crashes when closing after viewing a link topic

        //When user presses back keys very quickly, TOC2 objects use to destroy and 

        //then browser call back function triggers which leads to crash. This check 

        //will avoid crash.

        TUid viewId = iDocument.GetDisplayTopic()->GetViewID();

		if (viewId == KCSXHToc1ViewID || viewId == KCSXHKywdToc1ViewID

			|| viewId == KCSXHToc2ViewID || viewId == KCSXHKywdToc2ViewID

			|| viewId == KCSXHToc1AppHelpsViewID || viewId == KCSXHToc2AppHelpsViewID)

			{

			return;

			}

        //When user clicks on Application Topics, application topics 

        //corresponding to the topic being displayed has to be opened

        //Hence update the Display topic information if required.

        //Check if this event is triggered for the first load after construction

        TFileName url;

        iTopic->GetHtmlUrlL(url);

        if(url.Compare(iUrlNoAnchors) == 0)

        	{

        	iDocument.SetDisplayTopic(iTopic);

        	iNewTopic = NULL;

        	//Move the code from SetAndLoadInitialTopicL

        	//TSW Error:EJZG-7E2BUV

        	ClearHistoryL();

        	return;

        	}

        iNewTopic = iDocument.GetHtmlTopicForUrlL(iUrlNoAnchors);            

        CheckForMSK();

        }

    }

CCSXHHelpContentBase* CCSXHHtmlTopicContainer::GetCurrActiveObject()

    	{

    	return iNewTopic;

    	}    

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

// Back Key Handling

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

TBool CCSXHHtmlTopicContainer::HandleBackKeyL()

    {

    //When this view is initially created, the HTML content is loaded 

    //using the LoadDataL function and hence it will not be part of the

    //History stack but all other subsequest navigation by the user 

    //using the hyperlinks will be part of the History Stack

    if(IsPrevPageAvbl())

        {

        iBack = ETrue;

        TRAPD(res,HandleCommandBackL());

        if(res == KErrNone)

            return ETrue;

        else

            ClearHistoryL();