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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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;
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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