/*

* Copyright (c) 2002 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:  Provides an interface to the browser. This module

*                has mostly glue logic to integrate various components of Rainbow. 

*                It exposes a initialization function that create and intializes

*                the WAE components.

*

*/

/*

**-------------------------------------------------------------------------

**  Include Files

**-------------------------------------------------------------------------

*/

#include "nwx_logger.h"

#include "wml_scrproxy.h"

#include "wml_core.h"

#include "nwx_ctx.h"

#include "wml_decoder.h"

#include "nw_loadreq.h"

#include "nw_wmlscriptch_wmlscriptcontenthandler.h"

#include "nw_wml1x_epoc32contenthandler.h"

#include "nwx_http_defs.h"

#include "BrsrStatusCodes.h"

#include "CReferrerHelper.h"

#include "urlloader_urlloaderint.h"

/*

**-------------------------------------------------------------------------

**  Internal Types

**-------------------------------------------------------------------------

*/

/*

**-------------------------------------------------------------------------

**  Internal Prototypes

**-------------------------------------------------------------------------

*/

/*

**-------------------------------------------------------------------------

**  File Scoped Static Variables

**-------------------------------------------------------------------------

*/

/*

**-------------------------------------------------------------------------

**  Internal Functions

**-------------------------------------------------------------------------

*/

/*

**-------------------------------------------------------------------------

**  External Public (Exported) Functions

**-------------------------------------------------------------------------

*/

/*****************************************************************

  Name: NW_WaeUsrAgent_New()

  Description:  Create and initialize a new wae user agent

  Parameters:   

  Return Value: pointer to the wae user agent

******************************************************************/

NW_WaeUsrAgent_t* NW_WaeUsrAgent_New()

{

  NW_WaeUsrAgent_t *waeUsrAgent = NULL;

  waeUsrAgent = (NW_WaeUsrAgent_t*) NW_Mem_Malloc(sizeof(NW_WaeUsrAgent_t));

  if (waeUsrAgent != NULL) {

    waeUsrAgent->wml          = NULL;

    waeUsrAgent->scrProxy     = NULL;

    waeUsrAgent->authApi      = NULL;

    waeUsrAgent->loadProgApi  = NULL;

    waeUsrAgent->errorApi     = NULL;

    waeUsrAgent->wtaiApi      = NULL;

    waeUsrAgent->uiCtx        = NULL;

    waeUsrAgent->evLogApi     = NULL;

    waeUsrAgent->userRedirection  = NULL;

  }

  return waeUsrAgent;

}

/*****************************************************************

  Name: NW_WaeUsrAgent_Free()

  Description:  Free the Wae user agent. This function will shutdown the

  URL Loader, WML Interpreter, Image Loader and the script proxy.

  Parameters:   pointer to the wae user agent

  Return Value: 

******************************************************************/

void NW_WaeUsrAgent_Free(NW_WaeUsrAgent_t *waeUsrAgent)

{

  if (waeUsrAgent != NULL) {

    if (waeUsrAgent->scrProxy != NULL) {

      NW_ScrProxy_Free(waeUsrAgent->scrProxy);

    }

    NW_Mem_Free(waeUsrAgent);

  }

  return;

}

/************************************************************************

  Function: NW_Wae_UnRegisterWml

  Purpose:  Register the wml interpreter with the wae user agent.

  Parameters:  

  wae           - wae browser

  wml           - pointer to the wml interpreter

  Return Values:Return Values:KBrsrSuccess

                KBrsrOutOfMemory

**************************************************************************/

TBrowserStatusCode NW_Wae_RegisterWml(NW_WaeUsrAgent_t *wae, NW_Wml_t *wml)

{

  NW_ASSERT(wae != NULL);

  NW_ASSERT(wml != NULL);

  wae->wml = wml;

  return KBrsrSuccess;

}

/************************************************************************

  Function: NW_Wae_UnRegisterWml

  Purpose:  Unregister the wml interpreter with the wae user agent

  Parameters:  

  wae           - wae browser

  Return Values:KBrsrSuccess

                KBrsrNotFound if not previously registered

**************************************************************************/

TBrowserStatusCode NW_Wae_UnRegisterWml(NW_WaeUsrAgent_t *wae)

{

  if (wae)

  {

      wae->wml = NULL;

  }

  return KBrsrSuccess;

}

/************************************************************************

  Function: NW_Wae_RegisterWmlScriptProxy

  Purpose:  Register the script proxy with the wae user agent

  Parameters:  

  wae           - wae browser

  Return Values:KBrsrSuccess

**************************************************************************/

TBrowserStatusCode NW_Wae_RegisterWmlScriptProxy(NW_WaeUsrAgent_t *wae, 

                                          NW_ScrProxy_t *scrProxy)

{

   wae->scrProxy = scrProxy;

   return KBrsrSuccess;

}

/************************************************************************

  Function: NW_Wae_UnRegisterWmlScriptProxy

  Purpose:  UnRegister the script proxy with the wae user agent

  Parameters:  

  wae           - wae browser

  Return Values:KBrsrSuccess

**************************************************************************/

TBrowserStatusCode NW_Wae_UnRegisterWmlScriptProxy(NW_WaeUsrAgent_t *wae)

{

  wae->scrProxy = NULL;

  return KBrsrSuccess;

}

/************************************************************************

  Function: NW_WaeUsrAgent_RegisterGenDlg

  Purpose:  Register callback functions for generic dialogs.

  Parameters:  

  wae           - wae browser

  genDlgapi     - generic dialogs api

  Return Values: KBrsrSuccess

**************************************************************************/

TBrowserStatusCode 

NW_WaeUsrAgent_RegisterGenDlg(NW_WaeUsrAgent_t *wae,

                          const NW_GenDlgApi_t *genDlgapi)

{

  wae->genDlgApi = genDlgapi;

  return KBrsrSuccess;

}

/************************************************************************

  Function: NW_WaeUsrAgent_UnRegisterGenDlg

  Purpose:  UnRegister callback functions for generic dialogs.

  Parameters:  

  wae           - wae browser

  Return Values: KBrsrSuccess

**************************************************************************/

TBrowserStatusCode 

NW_WaeUsrAgent_UnRegisterGenDlg(NW_WaeUsrAgent_t *wae)

{

  wae->genDlgApi = NULL;

  return KBrsrSuccess;

}

/*****************************************************************

  Name: NW_WaeUsrAgent_GetScript()

  Description:  Get a pointer to the WML Script Proxy. The caller of 

                this function should not free the returned pointer.

  Parameters:   *wae - pointer to the wae browser

  Return Value: pointer to the script proxy

******************************************************************/

NW_ScrProxy_t * NW_WaeUsrAgent_GetScript(NW_WaeUsrAgent_t *wae)

{

  if (wae != NULL) {

    return wae->scrProxy;

  }

  return NULL;

}

/*****************************************************************

  Name: NW_Wml_CanNavigateToUri()

  Description:  Is it allowed to navigate to a new card. This behaviour

                is defined by the wml scripts running asynchronously.

                If a script has not completed and the user tries to 

                navigate to a new card, the navigation is canceled.

  Parameters: result  - result from the user.

  Return Value: KBrsrSuccess

                KBrsrWaeNavigationCancelled

******************************************************************/

TBrowserStatusCode NW_Wml_CanNavigateToUri()

{

  TBrowserStatusCode       status = KBrsrSuccess;

  NW_Bool           running;

  NW_WaeUsrAgent_t  *wae;

  wae = (NW_WaeUsrAgent_t*) NW_Ctx_Get(NW_CTX_WML_CORE, 0);

  NW_ASSERT(wae != NULL);

  /* The script proxy registers dynamically in Rainbow 3.0 */

  if (!wae->scrProxy) return KBrsrSuccess;

  /* check if a script is running */

  if ((status = NW_ScrProxy_IsScriptRunning(wae->scrProxy, &running))

              == KBrsrSuccess) {

    if (running == NW_TRUE) {

      status = KBrsrWaeNavigationCancelled;

    }

  }

  return status;

}

/*****************************************************************

  Name: NW_Wml_DoPrevLoad()

  Description:  Sets History to the previous entry and issues Url load request.

                Returns KBrsrFailure if no previous entry

  Parameters:   Wml Content handler pointer

  Return Value: KBrsrSuccess

                KBrsrFailure

                KBrsrOutOfMemory

******************************************************************/

TBrowserStatusCode NW_Wml_DoPrevLoad(void *wml1xCH)

{

  NW_HED_HistoryEntry_t     *prevEntry;

  NW_HED_DocumentRoot_t     *dr;

  const NW_HED_UrlRequest_t *urlRequest;

  TBrowserStatusCode               status = KBrsrFailure;

  dr = (NW_HED_DocumentRoot_t*) NW_HED_DocumentNode_GetRootNode (wml1xCH);

  prevEntry = NW_HED_HistoryStack_GetEntry(dr->historyStack,

                                  NW_HED_HistoryStack_Direction_Previous);

  if (prevEntry) {

    urlRequest = NW_HED_HistoryEntry_GetUrlRequest(prevEntry);

    if ((KBrsrSuccess == 

        NW_HED_UrlRequest_SetReason((NW_HED_UrlRequest_t*)urlRequest, 

                                    NW_HED_UrlRequest_Reason_DocPrev)) &&

        (KBrsrSuccess == 

        NW_HED_UrlRequest_SetCacheMode((NW_HED_UrlRequest_t*)urlRequest, 

                                       NW_CACHE_HISTPREV))) {

      /* 

      ** update the history to point to the new current entry.  It is important

      ** that this is done BEFORE StartRequest.

      */

      NW_HED_HistoryStack_SetCurrent(dr->historyStack, 

                                     NW_HED_HistoryStack_Direction_Previous);

      /* Do the load */ 

      status = NW_HED_DocumentRoot_StartRequest(dr,

                                    NW_HED_DocumentNodeOf( dr ), // top level request is owned by document root.

                                    urlRequest,

                                    (void *)&NW_Wml1x_Epoc32ContentHandler_Class );

    }

  }

  return status;

}

/*****************************************************************

  Name: NW_Wml_UrlLoad()

  Description:  Load a Url.

  Parameters:   url     - url to load  

                postfields - pointer to postfield data struct,

                             OR NULL, if no postfield data exists

  Return Value: KBrsrSuccess

                KBrsrFailure

******************************************************************/

TBrowserStatusCode NW_Wml_UrlLoad(void          *wml1xCH,

                           const NW_Ucs2 *url, 

                           NW_NVPair_t   *postfields,

                   const NW_Cache_Mode_t cacheMode,

				   NW_Ucs2* referrerUrl)

{

  NW_Text_UCS2_t        *urlObj     = NULL;

  NW_HED_UrlRequest_t   *urlRequest = NULL;

  NW_Ucs2               *req_url    = NULL;

  TBrowserStatusCode           status      = KBrsrSuccess;

  NW_HED_DocumentRoot_t *dr;

  dr = (NW_HED_DocumentRoot_t*) NW_HED_DocumentNode_GetRootNode (wml1xCH);

  if ( !NW_NVPair_IsEmpty(postfields) ) {

    status = NW_LoadReq_BuildQuery(url, postfields, &req_url, NULL, NULL);

    if (status != KBrsrSuccess) {

      NW_THROW_ERROR();

    }

  } else {

    req_url = NW_Str_Newcpy(url);

    if (req_url == NULL) {

      status = KBrsrOutOfMemory;

      NW_THROW_ERROR();

    }

  }

  urlObj = NW_Text_UCS2_New(req_url, 0, 0);

  if (!urlObj) {

    status = KBrsrOutOfMemory;

    NW_THROW_ERROR();

  }

  urlRequest = NW_HED_UrlRequest_New(NW_TextOf (urlObj),

                                      NW_URL_METHOD_GET, 

                                      NULL, NULL,

                                      NW_HED_UrlRequest_Reason_DocLoad,

                                      NW_HED_UrlRequest_LoadNormal,

                                      NW_UrlRequest_Type_Any);

  if (referrerUrl) {

	  SetReferrerHeader(urlRequest, referrerUrl);

  }

  if (!urlRequest) {

    status = KBrsrOutOfMemory;

    NW_THROW_ERROR();

  }

  (void)NW_HED_UrlRequest_SetCacheMode(urlRequest, cacheMode);

  status = NW_HED_DocumentRoot_StartRequest(dr,

                                NW_HED_DocumentNodeOf( dr ), // top level request is owned by document root.

                                urlRequest,

                                (void *)&NW_Wml1x_Epoc32ContentHandler_Class );

  if (status == KBrsrSuccess) {

    urlRequest = NULL;  /* To prevent freeing it when exiting the function */

  }

NW_CATCH_ERROR

  NW_Str_Delete(req_url);

  NW_Object_Delete(urlObj);

  if (urlRequest) {

    NW_Object_Delete (urlRequest);

  }

  return status;

}

/*****************************************************************

  Name: NW_Wml_HttpLoad()

  Description:  Do a HTTP load.

  Parameters:   usrAgent        - wae browser

                *url            - url to load  

                is_method_post  - HTTP method

                referer         - referer to the url

                accept_charset  -

                postfields      - name/value pairs

                enctype         - urlencoded or multipart/form-data

  Return Value: KBrsrSuccess

                KBrsrFailure

                KBrsrUnsupportedFormCharset

                KBrsrOutOfMemory

******************************************************************/

TBrowserStatusCode NW_Wml_HttpLoad(void             *wml1xCH,

                            const NW_Ucs2    *url,

                            NW_Bool          is_method_post, 

                            const NW_Ucs2    *referer, 

                            const NW_Ucs2    *accept_charset,

                            NW_Http_Header_t *header,

                            NW_NVPair_t      *postfields,

                            const NW_Ucs2    *enctype,

                       const NW_Cache_Mode_t cacheMode)

{

  NW_Buffer_t           *body       = NULL;

  NW_Ucs2               *resultUrl  = NULL;

  NW_HED_UrlRequest_t   *urlRequest = NULL;

  NW_Text_UCS2_t        *urlObj     = NULL;

  NW_Uint8              method;

  TBrowserStatusCode           status;

  NW_WaeUsrAgent_t      *wae;

  NW_HED_DocumentRoot_t *dr;

  dr = (NW_HED_DocumentRoot_t*) NW_HED_DocumentNode_GetRootNode (wml1xCH);

  wae = (NW_WaeUsrAgent_t*) NW_Ctx_Get(NW_CTX_WML_CORE, 0);

  NW_ASSERT(wae != NULL);

  NW_ASSERT(url != NULL);

  status = NW_LoadReq_Create(url, is_method_post, referer,

                             accept_charset, postfields, enctype,

                             NW_DeckDecoder_GetEncoding (wae->wml->decoder), 

                             &header, &resultUrl, &method, &body, NULL, NULL);

  if (status != KBrsrSuccess) {

    NW_THROW_ERROR();

  }

  urlObj = NW_Text_UCS2_New (resultUrl, 0, 0);

  if (!urlObj) {

    status = KBrsrOutOfMemory;

    NW_THROW_ERROR();

  }

  urlRequest = NW_HED_UrlRequest_New(NW_TextOf (urlObj),

                                     method, 

                                     header, 

                                     body,

                                     NW_HED_UrlRequest_Reason_DocLoad,

                                     NW_HED_UrlRequest_LoadNormal,

                                     NW_UrlRequest_Type_Any);

  if (!urlRequest) {

    UrlLoader_HeadersFree(header);//R->ul

    NW_Buffer_Free(body);

    status = KBrsrOutOfMemory;

    NW_THROW_ERROR();

  }

  (void)NW_HED_UrlRequest_SetCacheMode(urlRequest, cacheMode);

  /* Do the load */   

  status = NW_HED_DocumentRoot_StartRequest(dr,

                                NW_HED_DocumentNodeOf( dr ), // top level request is owned by document root.

                                urlRequest,

                                (void *)&NW_Wml1x_Epoc32ContentHandler_Class );

  if (status == KBrsrSuccess) {

    urlRequest = NULL;  /* To prevent freeing it when exiting the function */

  }

NW_CATCH_ERROR

  NW_Str_Delete(resultUrl);

  NW_Object_Delete(urlObj);

  if (urlRequest) {

    NW_Object_Delete (urlRequest);

  }

  return status;

}

/*****************************************************************

  Name: NW_WaeUsrAgent_DlgListSelect()

  Purpose:  Call the list select dialog box.  

  Parameters:  

  wae           - wae browser

  data          - structure to pass to the dialog

  callbackCtx   - callback context

  callback      - the callback to cal after the dialog box exits