emailuis/nmailui/src/nmviewerviewnetmanager.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 11 Jun 2010 13:27:14 +0300
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "nmuiheaders.h"
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static const QString NmViewerViewNetManagerScheme("cid");
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/*!
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	\class NmViewerViewNetManager
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	\brief Mail viewer network access manager class
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*/
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/*!
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    Constructor
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*/
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NmViewerViewNetManager::NmViewerViewNetManager(NmUiEngine &uiEngine)
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    : QNetworkAccessManager(),
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      mUiEngine(uiEngine),
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      mMessageView(NULL)
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{
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    NM_FUNCTION;
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}
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/*!
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    Destructor
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*/
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NmViewerViewNetManager::~NmViewerViewNetManager()
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{
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    NM_FUNCTION;
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}
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/*!
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    Setter for view.
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*/
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void NmViewerViewNetManager::setView(NmViewerView *viewerView)
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{
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    NM_FUNCTION;
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    mMessageView=viewerView;
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}
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/*!
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    createRequest
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*/
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QNetworkReply *NmViewerViewNetManager::createRequest(
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    Operation op, const QNetworkRequest &request, QIODevice *outgoingData)
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{
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    NM_FUNCTION;
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    QNetworkRequest myRequest(request);
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    // Set request attribute to prefer cachevar  
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    const QVariant cacheControl((int)QNetworkRequest::PreferCache);
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    myRequest.setAttribute(QNetworkRequest::CacheLoadControlAttribute, 
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                         cacheControl);
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    const QUrl requestUrl = myRequest.url();
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    // Check whether request is for embedded image
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    if (mMessageView&&mMessageView->webView()&&op==QNetworkAccessManager::GetOperation
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        && requestUrl.scheme()==NmViewerViewNetManagerScheme) {
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        QString id = requestUrl.path();
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        NmId partId;
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        bool isFetched = false;
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        NmMessage *message = mMessageView->message();
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        if (message) {
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            QVariant data = mMessageView->webView()->loadResource(
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                    QTextDocument::ImageResource, requestUrl, partId, isFetched);
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            NmViewerViewNetReply* reply = NULL;
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            if (isFetched) {
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                reply = new NmViewerViewNetReply(data, mUiEngine);
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            }
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            else  {
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                reply = new NmViewerViewNetReply(data, mUiEngine,
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                        message->envelope().mailboxId(), message->envelope().folderId(),
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                        message->envelope().messageId(), partId);
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            }
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            reply->setOriginalRequest(myRequest);
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            return reply;
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        }
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    }
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    // If request is not for embedded image, forward to base class
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    return QNetworkAccessManager::createRequest(op, myRequest, outgoingData);
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}