source: trunk/src/corelib/concurrent/qfuture.h@ 497

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#ifndef QFUTURE_H
#define QFUTURE_H

#include <QtCore/qglobal.h>

#ifndef QT_NO_QFUTURE

#include <QtCore/qfutureinterface.h>
#include <QtCore/qstring.h>
#include <QtCore/qtconcurrentcompilertest.h>

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

QT_MODULE(Core)

template <typename T>
class QFutureWatcher;
template <>
class QFutureWatcher<void>;

template <typename T>
class QFuture
{
public:
    QFuture()
        : d(QFutureInterface<T>::canceledResult())
    { }
    explicit QFuture(QFutureInterface<T> *p) // internal
        : d(*p)
    { }
    QFuture(const QFuture &other)
        : d(other.d)
    { }
    ~QFuture()
    { }

    inline QFuture &operator=(const QFuture &other);
    bool operator==(const QFuture &other) const { return (d == other.d); }
    bool operator!=(const QFuture &other) const { return (d != other.d); }

    void cancel() { d.cancel(); }
    bool isCanceled() const { return d.isCanceled(); }

    void setPaused(bool paused) { d.setPaused(paused); }
    bool isPaused() const { return d.isPaused(); }
    void pause() { setPaused(true); }
    void resume() { setPaused(false); }
    void togglePaused() { d.togglePaused(); }

    bool isStarted() const { return d.isStarted(); }
    bool isFinished() const { return d.isFinished(); }
    bool isRunning() const { return d.isRunning(); }

    int resultCount() const { return d.resultCount(); }
    int progressValue() const { return d.progressValue(); }
    int progressMinimum() const { return d.progressMinimum(); }
    int progressMaximum() const { return d.progressMaximum(); }
    QString progressText() const { return d.progressText(); }
    void waitForFinished() { d.waitForFinished(); }

    inline T result() const;
    inline T resultAt(int index) const;
    bool isResultReadyAt(int resultIndex) const { return d.isResultReadyAt(resultIndex); }

    operator T() const { return result(); }
    QList<T> results() const { return d.results(); }

    class const_iterator
    {
    public:
        typedef std::bidirectional_iterator_tag iterator_category;
        typedef ptrdiff_t difference_type;