Watcher constructor
Creates a new DirectoryWatcher or FileWatcher monitoring path
,
depending on whether it's a file or directory.
If a native watcher is available for this platform, this will use it. Otherwise, it will fall back to a polling watcher. Notably, watching individual files is not natively supported on Windows, although watching directories is.
If pollingDelay
is passed, it specifies the amount of time the watcher
will pause between successive polls of the contents of path
. Making this
shorter will give more immediate feedback at the expense of doing more IO
and higher CPU usage. Defaults to one second. Ignored for non-polling
watchers.
Implementation
factory Watcher(String path, {Duration? pollingDelay}) {
if (File(path).existsSync()) {
return FileWatcher(path, pollingDelay: pollingDelay);
} else {
return DirectoryWatcher(path, pollingDelay: pollingDelay);
}
}