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28
29#ifndef QMLPREVIEWFILESYSTEMWATCHER_H
30#define QMLPREVIEWFILESYSTEMWATCHER_H
31
32#include <QtCore/qfilesystemwatcher.h>
33#include <QtCore/qobject.h>
34#include <QtCore/qset.h>
35
36class QmlPreviewFileSystemWatcher : public QObject
37{
38 Q_OBJECT
39
40public:
41 explicit QmlPreviewFileSystemWatcher(QObject *parent = nullptr);
42
43 void addFile(const QString &file);
44 void removeFile(const QString &file);
45 bool watchesFile(const QString &file) const;
46
47 void addDirectory(const QString &file);
48 void removeDirectory(const QString &file);
49 bool watchesDirectory(const QString &file) const;
50
51signals:
52 void fileChanged(const QString &path);
53 void directoryChanged(const QString &path);
54
55private:
56 using WatchEntrySet = QSet<QString>;
57 using WatchEntrySetIterator = WatchEntrySet::iterator;
58
59 void onDirectoryChanged(const QString &path);
60
61 WatchEntrySet m_files;
62 WatchEntrySet m_directories;
63
64 // Directories watched either explicitly or implicitly through files contained in them.
65 QHash<QString, int> m_directoryCount;
66
67 QFileSystemWatcher *m_watcher = nullptr;
68};
69
70#endif // QMLPREVIEWFILESYSTEMWATCHER_H
71

source code of qtdeclarative/tools/qmlpreview/qmlpreviewfilesystemwatcher.h