dgiofileiterator.h

// SPDX-FileCopyrightText: 2019 - 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#ifndef DGIOFILEITERATOR_H
#define DGIOFILEITERATOR_H
 
#include <QObject>
#include <QSharedData>
 
namespace Gio {
class FileEnumerator;
}
 
enum DGioIOPriority
{
  PRIORITY_HIGH = -100,

  PRIORITY_DEFAULT = 0,

  PRIORITY_HIGH_IDLE = 100,

  PRIORITY_DEFAULT_IDLE = 200,

  PRIORITY_LOW = 300
};
 
Q_ENUMS(DGioIOPriority);
 
class DGioFileInfo;
class DGioFileIteratorPrivate;
class DGioFileIterator : public QObject, public QSharedData
{
    Q_OBJECT
public:
    explicit DGioFileIterator(Gio::FileEnumerator *gmmFileEnumeratorPtr, QObject *parent = nullptr);
    ~DGioFileIterator();
 
    QExplicitlySharedDataPointer<DGioFileInfo> nextFile();
    void nextFilesAsync(int numberOfFiles = 1, DGioIOPriority io_priority = PRIORITY_DEFAULT);
 
Q_SIGNALS:
    void nextFilesReady(QList<QExplicitlySharedDataPointer<DGioFileInfo> > fileInfoList);
    void nextFilesCancelled();
 
private:
    QScopedPointer<DGioFileIteratorPrivate> d_ptr;
 
    Q_DECLARE_PRIVATE(DGioFileIterator)
};
 
#endif // DGIOFILEITERATOR_H