/// <summary>
/// A general "one size fits all" factory method that creates a <see cref="FileSystemWatcher"/> which calls a specified method
/// <see cref="action"/> when files at a given path change.
/// </summary>
/// <param name="configDirectory">The path to monitor.</param>
/// <param name="action">The function to run.</param>
/// <param name="events">The events which trigger the action.</param>
/// <param name="enableSubdirectories">Decides whether subdirectories in a given path should be monitored.</param>
/// <param name="filter">The filter used to determine which files are being watched for.</param>
public static FileSystemWatcher CreateGeneric(string configDirectory, Action action, FileSystemWatcherEvents events, bool enableSubdirectories = true, string filter = "*.json")
{
var watcher = new FileSystemWatcher(configDirectory);
watcher.EnableRaisingEvents = true;
watcher.IncludeSubdirectories = enableSubdirectories;
watcher.Filter = filter;
if (events.HasFlag(FileSystemWatcherEvents.Deleted))
{
watcher.Deleted += (a, b) => { action(); }
}
;
if (events.HasFlag(FileSystemWatcherEvents.Changed))
{
watcher.Changed += (a, b) => { action(); }
}
;
if (events.HasFlag(FileSystemWatcherEvents.Renamed))
{
watcher.Renamed += (a, b) => { action(); }
}
;
if (events.HasFlag(FileSystemWatcherEvents.Created))
{
watcher.Created += (a, b) => { action(); }
}
;
return(watcher);
}
/// <summary>
/// A factory method that creates a <see cref="FileSystemWatcher"/> which calls a specified method
/// <see cref="action"/> when files at a given path change.
/// </summary>
/// <param name="configDirectory">The path of the directory containing the configurations.</param>
/// <param name="action">The function to run when a configuration is altered or changed.</param>
/// <param name="events">The events which trigger the launching of given action.</param>
/// <param name="enableSubdirectories">Decides whether subdirectories in a given path should be monitored.</param>
/// <param name="filter">The filter used to determine which files are being watched for.</param>
public static FileSystemWatcher CreateChangeCreateDelete(string configDirectory, FileSystemEventHandler action, FileSystemWatcherEvents events, bool enableSubdirectories = true, string filter = "*.json")
{
var watcher = new FileSystemWatcher(configDirectory);
watcher.EnableRaisingEvents = true;
watcher.IncludeSubdirectories = enableSubdirectories;
watcher.Filter = filter;
if (events.HasFlag(FileSystemWatcherEvents.Deleted))
{
watcher.Deleted += action;
}
if (events.HasFlag(FileSystemWatcherEvents.Changed))
{
watcher.Changed += action;
}
if (events.HasFlag(FileSystemWatcherEvents.Created))
{
watcher.Created += action;
}
if (events.HasFlag(FileSystemWatcherEvents.Renamed))
{
throw new ArgumentException($"{FileSystemWatcherEvents.Renamed} is not supported.");
}
return(watcher);
}
/// <summary>
/// A factory method that creates a <see cref="FileSystemWatcher"/> which calls a specified method
/// <see cref="Action{T}"/> when files at a given path change.
/// </summary>
/// <param name="configDirectory">The path of the directory containing the configurations.</param>
/// <param name="action">The function to run when a configuration is altered or changed.</param>
/// <param name="renamedEventHandler">The function to run when an item is renamed.</param>
/// <param name="events">The events which trigger the launching of given action.</param>
/// <param name="enableSubdirectories">Decides whether subdirectories in a given path should be monitored.</param>
/// <param name="filter">The filter used to determine which files are being watched for.</param>
/// <param name="useBigBuffers">If true, uses a big internal buffer for receiving changes.</param>
public static FileSystemWatcher Create(string configDirectory, FileSystemEventHandler action, RenamedEventHandler renamedEventHandler, FileSystemWatcherEvents events, bool enableSubdirectories = true, string filter = "*.json", bool useBigBuffers = true)
{
var watcher = new FileSystemWatcher(configDirectory);
watcher.EnableRaisingEvents = true;
watcher.IncludeSubdirectories = enableSubdirectories;
watcher.Filter = filter;
watcher.NotifyFilter = 0;
if (useBigBuffers)
{
watcher.InternalBufferSize = 65536;
}
if (events.HasFlag(FileSystemWatcherEvents.Deleted))
{
watcher.Deleted += action;
watcher.NotifyFilter |= NotifyFilters.DirectoryName | NotifyFilters.FileName;
}
if (events.HasFlag(FileSystemWatcherEvents.Changed))
{
watcher.Changed += action;
watcher.NotifyFilter |= NotifyFilters.DirectoryName | NotifyFilters.FileName | NotifyFilters.LastWrite;
}
if (events.HasFlag(FileSystemWatcherEvents.Created))
{
watcher.Created += action;
watcher.NotifyFilter |= NotifyFilters.DirectoryName | NotifyFilters.FileName;
}
if (events.HasFlag(FileSystemWatcherEvents.Renamed))
{
watcher.Renamed += renamedEventHandler;
watcher.NotifyFilter |= NotifyFilters.DirectoryName | NotifyFilters.FileName;
}
return(watcher);
}
