qdispatchsource.h

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/*
* Copyright (c) 2011-2012 MLBA-Team. All rights reserved.
*
* @MLBA_OPEN_LICENSE_HEADER_START@
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* 
*     http://www.apache.org/licenses/LICENSE-2.0
* 
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @MLBA_OPEN_LICENSE_HEADER_END@
*/


#ifndef QDISPATCH_SOURCE_H_
#define QDISPATCH_SOURCE_H_

#include <QtCore/qobject.h>
#include <QtCore/qscopedpointer.h>

#include "qdispatchglobal.h"
#include "qblockrunnable.h"

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

class QRunnable;
class QIODevice;
class QNetworkAccessManager;
class QDispatchQueue;
class QNetworkReply;

QT_MODULE(Dispatch)

class QDispatchSource;

class Q_DISPATCH_EXPORT QDispatchSourceType : public QObject {

        Q_OBJECT

    protected:
        virtual void init(QThread*) = 0;

    signals:
        void ready(QObject* = NULL);

        friend class QDispatchSource;
};

class Q_DISPATCH_EXPORT QDispatchSourceTypeSignal : public QDispatchSourceType {

    public:
        QDispatchSourceTypeSignal(QObject* sender, const char* signal);
        ~QDispatchSourceTypeSignal();

    protected:
        virtual void init(QThread*);

    private:
        Q_DISABLE_COPY(QDispatchSourceTypeSignal)

};

class Q_DISPATCH_EXPORT QDispatchSourceTypeIODevice : public QDispatchSourceType {

        Q_OBJECT

    public:
        QDispatchSourceTypeIODevice(QIODevice*);
        ~QDispatchSourceTypeIODevice();

    protected:
        virtual void init(QThread*);

    private slots:
        void avail();

    private:
        Q_DISABLE_COPY(QDispatchSourceTypeIODevice)
        QIODevice* dev;
};

class Q_DISPATCH_EXPORT QDispatchSourceTypeIODeviceRead : public QDispatchSourceTypeIODevice {

        Q_OBJECT

    public:
        QDispatchSourceTypeIODeviceRead(QIODevice*);

    private:
        Q_DISABLE_COPY(QDispatchSourceTypeIODeviceRead)
};

class Q_DISPATCH_EXPORT QDispatchSourceTypeIODeviceWrite : public QDispatchSourceType {

        Q_OBJECT

    public:
        QDispatchSourceTypeIODeviceWrite(QIODevice*);
        ~QDispatchSourceTypeIODeviceWrite();

    protected:
        virtual void init(QThread*);

    private slots:
        void finished(qint64);

    private:
        Q_DISABLE_COPY(QDispatchSourceTypeIODeviceWrite)
        QIODevice* dev;
};

class Q_DISPATCH_EXPORT QDispatchSourceTypeNetworkManager : public QDispatchSourceType {

        Q_OBJECT

    public:
        QDispatchSourceTypeNetworkManager(QNetworkAccessManager*);
        ~QDispatchSourceTypeNetworkManager();

    private slots:
        void finished(QNetworkReply*);

    protected:
        void init(QThread*);

    private:
        Q_DISABLE_COPY(QDispatchSourceTypeNetworkManager)
        QNetworkAccessManager* manager;
};

class Q_DISPATCH_EXPORT QDispatchSource : public QObject {

        Q_OBJECT

    public:
        QDispatchSource(QDispatchSourceType*);
        ~QDispatchSource();
        void setHandler(QRunnable*);
#ifdef XDISPATCH_HAS_BLOCKS

        inline void setHandler(dispatch_block_t b) {
            setHandler( new QBlockRunnable(b) );
        }
#endif

        QDispatchQueue targetQueue() const;
        void setTargetQueue(const QDispatchQueue&);
        template <typename T> static T* data(){
            return qobject_cast<T*>(_data());
        }

    public slots:
        void resume();
        void suspend();

    private slots:
        void signal(QObject* = NULL);

    private:
        Q_DISABLE_COPY(QDispatchSource)
        class Private;
        QScopedPointer<Private> d;

        static QObject* _data();

};


QT_END_NAMESPACE
QT_END_HEADER

#endif /* QDISPATCH_SOURCE_H_ */