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      1 /*
      2     Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
      3 
      4     This library is free software; you can redistribute it and/or
      5     modify it under the terms of the GNU Library General Public
      6     License as published by the Free Software Foundation; either
      7     version 2 of the License, or (at your option) any later version.
      8 
      9     This library is distributed in the hope that it will be useful,
     10     but WITHOUT ANY WARRANTY; without even the implied warranty of
     11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12     Library General Public License for more details.
     13 
     14     You should have received a copy of the GNU Library General Public License
     15     along with this library; see the file COPYING.LIB.  If not, write to
     16     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17     Boston, MA 02110-1301, USA.
     18 */
     19 #ifndef QNETWORKREPLYHANDLER_H
     20 #define QNETWORKREPLYHANDLER_H
     21 
     22 #include <QObject>
     23 
     24 #include <QNetworkRequest>
     25 #include <QNetworkAccessManager>
     26 
     27 #include "FormData.h"
     28 
     29 QT_BEGIN_NAMESPACE
     30 class QFile;
     31 class QNetworkReply;
     32 QT_END_NAMESPACE
     33 
     34 namespace WebCore {
     35 
     36 class ResourceHandle;
     37 
     38 class QNetworkReplyHandler : public QObject
     39 {
     40     Q_OBJECT
     41 public:
     42     enum LoadMode {
     43         LoadNormal,
     44         LoadDeferred,
     45         LoadResuming
     46     };
     47 
     48     QNetworkReplyHandler(ResourceHandle *handle, LoadMode);
     49     void setLoadMode(LoadMode);
     50 
     51     QNetworkReply* reply() const { return m_reply; }
     52 
     53     void abort();
     54 
     55     QNetworkReply* release();
     56 
     57 signals:
     58     void processQueuedItems();
     59 
     60 private slots:
     61     void finish();
     62     void sendResponseIfNeeded();
     63     void forwardData();
     64     void sendQueuedItems();
     65     void uploadProgress(qint64 bytesSent, qint64 bytesTotal);
     66 
     67 private:
     68     void start();
     69     void resetState();
     70 
     71     QNetworkReply* m_reply;
     72     ResourceHandle* m_resourceHandle;
     73     bool m_redirected;
     74     bool m_responseSent;
     75     bool m_responseDataSent;
     76     LoadMode m_loadMode;
     77     QNetworkAccessManager::Operation m_method;
     78     QNetworkRequest m_request;
     79 
     80     // defer state holding
     81     bool m_shouldStart;
     82     bool m_shouldFinish;
     83     bool m_shouldSendResponse;
     84     bool m_shouldForwardData;
     85 };
     86 
     87 // Self destructing QIODevice for FormData
     88 //  For QNetworkAccessManager::put we will have to gurantee that the
     89 //  QIODevice is valid as long finished() of the QNetworkReply has not
     90 //  been emitted. With the presence of QNetworkReplyHandler::release I do
     91 //  not want to gurantee this.
     92 class FormDataIODevice : public QIODevice {
     93     Q_OBJECT
     94 public:
     95     FormDataIODevice(FormData*);
     96     ~FormDataIODevice();
     97 
     98     bool isSequential() const;
     99 
    100 protected:
    101     qint64 readData(char*, qint64);
    102     qint64 writeData(const char*, qint64);
    103 
    104 private:
    105     void moveToNextElement();
    106 
    107 private:
    108     Vector<FormDataElement> m_formElements;
    109     QFile* m_currentFile;
    110     qint64 m_currentDelta;
    111 };
    112 
    113 }
    114 
    115 #endif // QNETWORKREPLYHANDLER_H
    116