private static IDisposable SetWatcher(string directory, DirectoryChanged callback)
{
var watcher = Get(directory);
void OnCreated(object sender, FileSystemEventArgs e)
{
var local = FileUtils.GetPathWithin(e.FullPath, directory);
if (local == string.Empty)
{
callback(null);
}
else if (local != null)
{
callback(e.FullPath);
}
}
void OnChanged(object sender, FileSystemEventArgs e)
{
var local = FileUtils.GetPathWithin(e.FullPath, directory);
if (!string.IsNullOrEmpty(local))
{
callback(e.FullPath);
}
}
void OnDeleted(object sender, FileSystemEventArgs e)
{
var local = FileUtils.GetPathWithin(e.FullPath, directory);
if (local == string.Empty)
{
callback(null);
}
else if (local != null)
{
callback(e.FullPath);
}
}
void OnRenamed(object sender, RenamedEventArgs e)
{
var localOld = FileUtils.GetPathWithin(e.OldFullPath, directory);
var localNew = FileUtils.GetPathWithin(e.FullPath, directory);
if (localOld == string.Empty || localNew == string.Empty)
{
callback(null);
}
else
{
if (localNew != null)
{
callback(e.FullPath);
}
if (localOld != null)
{
callback(e.OldFullPath);
}
}
}
watcher.Created += OnCreated;
watcher.Changed += OnChanged;
watcher.Deleted += OnDeleted;
watcher.Renamed += OnRenamed;
return(new Holder <IDisposable>(watcher, d => {
var w = (FileSystemWatcher)d;
w.Created -= OnCreated;
w.Changed -= OnChanged;
w.Deleted -= OnDeleted;
w.Renamed -= OnRenamed;
Release(w);
}));
}