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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#ifndef QMLPREVIEWFILESYSTEMWATCHER_H
#define QMLPREVIEWFILESYSTEMWATCHER_H
#include <QtCore/qfilesystemwatcher.h>
#include <QtCore/qobject.h>
#include <QtCore/qset.h>
class QmlPreviewFileSystemWatcher : public QObject
{
Q_OBJECT
public:
explicit QmlPreviewFileSystemWatcher(QObject *parent = nullptr);
void addFile(const QString &file);
void removeFile(const QString &file);
bool watchesFile(const QString &file) const;
void addDirectory(const QString &file);
void removeDirectory(const QString &file);
bool watchesDirectory(const QString &file) const;
Q_SIGNALS:
void fileChanged(const QString &path);
void directoryChanged(const QString &path);
private:
using WatchEntrySet = QSet<QString>;
using WatchEntrySetIterator = WatchEntrySet::iterator;
void onDirectoryChanged(const QString &path);
WatchEntrySet m_files;
WatchEntrySet m_directories;
// Directories watched either explicitly or implicitly through files contained in them.
QHash<QString, int> m_directoryCount;
QFileSystemWatcher *m_watcher = nullptr;
};
#endif // QMLPREVIEWFILESYSTEMWATCHER_H
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