/*

* Copyright (c) 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: NMail viewer net manager implementation.

*              This class is needed to separate cid

*              images from url-based images

*/

#include "nmuiheaders.h"

static const QString NmViewerViewNetManagerScheme("cid");

/*!

	\class NmViewerViewNetManager

	\brief Mail viewer network access manager class

*/

/*!

    Constructor

*/

NmViewerViewNetManager::NmViewerViewNetManager(NmUiEngine &uiEngine)

    : QNetworkAccessManager(),

      mUiEngine(uiEngine),

      mMessageView(NULL)

{

    NM_FUNCTION;

}

/*!

    Destructor

*/

NmViewerViewNetManager::~NmViewerViewNetManager()

{

    NM_FUNCTION;

}

/*!

    Setter for view.

*/

void NmViewerViewNetManager::setView(NmViewerView *viewerView)

{

    NM_FUNCTION;

    mMessageView=viewerView;

}

/*!

    createRequest

*/

QNetworkReply *NmViewerViewNetManager::createRequest(

    Operation op, const QNetworkRequest &request, QIODevice *outgoingData)

{

    NM_FUNCTION;

    QNetworkRequest myRequest(request);

    // Set request attribute to prefer cachevar  

    const QVariant cacheControl((int)QNetworkRequest::PreferCache);

    myRequest.setAttribute(QNetworkRequest::CacheLoadControlAttribute, 

                         cacheControl);

    const QUrl requestUrl = myRequest.url();

    // Check whether request is for embedded image

    if (mMessageView&&mMessageView->webView()&&op==QNetworkAccessManager::GetOperation

        && requestUrl.scheme()==NmViewerViewNetManagerScheme) {

        QString id = requestUrl.path();

        NmId partId;

        bool isFetched(false);

        NmMessage *message = mMessageView->message();

        if (message) {

            QVariant data = mMessageView->webView()->loadResource(

                    QTextDocument::ImageResource, requestUrl, partId, isFetched);

            NmViewerViewNetReply* reply(NULL);

            if (isFetched) {

                reply = new NmViewerViewNetReply(data, mUiEngine);

            }

            else {

                const NmMessageEnvelope &env = message->envelope();

                reply = new NmViewerViewNetReply(data, mUiEngine,

                        env.mailboxId(), env.folderId(),

                        env.messageId(), partId);

            }

            reply->setOriginalRequest(myRequest);

            return reply;

        }

    }

    // If request is not for embedded image, forward to base class

    return QNetworkAccessManager::createRequest(op, myRequest, outgoingData);

}