119 lines
3.1 KiB
C++
119 lines
3.1 KiB
C++
/****************************************************************************
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**
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** Vreen - vk.com API Qt bindings
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**
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** Copyright © 2012 Aleksey Sidorov <gorthauer87@ya.ru>
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**
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*****************************************************************************
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**
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** $VREEN_BEGIN_LICENSE$
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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** See the GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see http://www.gnu.org/licenses/.
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** $VREEN_END_LICENSE$
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**
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****************************************************************************/
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#ifndef VK_REPLY_H
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#define VK_REPLY_H
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#include <QObject>
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#include <QVariant>
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#include "vk_global.h"
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#include <functional>
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class QNetworkReply;
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namespace Vreen {
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class ReplyPrivate;
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class VK_SHARED_EXPORT Reply : public QObject
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{
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Q_OBJECT
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Q_DECLARE_PRIVATE(Reply)
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public:
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class ResultHandlerBase
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{
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public:
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virtual ~ResultHandlerBase() {}
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virtual QVariant handle(const QVariant &data) = 0;
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};
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template <typename Method>
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class ResultHandlerImpl : public ResultHandlerBase
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{
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public:
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ResultHandlerImpl(Method method) : m_method(method) {}
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QVariant handle(const QVariant &data)
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{
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return m_method(data);
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}
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private:
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Method m_method;
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};
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virtual ~Reply();
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QNetworkReply *networkReply() const;
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QVariant response() const;
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Q_INVOKABLE QVariant error() const;
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QVariant result() const;
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template <typename Method>
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void setResultHandler(const Method &handler);
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signals:
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void resultReady(const QVariant &variables);
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void error(int code);
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protected:
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explicit Reply(QNetworkReply *networkReply = 0);
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void setReply(QNetworkReply *networkReply);
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QScopedPointer<ReplyPrivate> d_ptr;
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friend class Client;
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private:
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void setHandlerImpl(ResultHandlerBase *handler);
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Q_PRIVATE_SLOT(d_func(), void _q_reply_finished())
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Q_PRIVATE_SLOT(d_func(), void _q_network_reply_error(QNetworkReply::NetworkError))
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};
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template <typename Method>
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void Reply::setResultHandler(const Method &handler)
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{
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setHandlerImpl(new ResultHandlerImpl<Method>(handler));
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}
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template<typename T>
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class ReplyBase : public Reply
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{
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public:
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T result() const { return qvariant_cast<T>(Reply::result()); }
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protected:
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template<typename Method>
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explicit ReplyBase(Method handler, QNetworkReply *networkReply = 0) :
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Reply(networkReply)
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{
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setResultHandler(handler);
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}
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friend class Client;
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};
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//some useful typedefs
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typedef ReplyBase<int> IntReply;
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} // namespace Vreen
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Q_DECLARE_METATYPE(Vreen::Reply*)
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#endif // VK_REPLY_H
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