/// <summary>
/// Handles an item being added to a folder that is being watched.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Folder_ItemAdded(object sender, DirectoryItemAddedEventArgs e)
{
// register the new item.
var currentMode = _visitMode;
_visitMode = VisitMode.Register;
e.NewItem.Accept(this);
_visitMode = currentMode;
OnRaiseItemAdded(e);
}
protected virtual void OnRaiseItemAdded(DirectoryItemAddedEventArgs args)
{
// TODO: Only raise the event if the item/s matches watch pattern.
var matches = GetMatchingFilters(args.NewItem.Path).ToArray();
if (matches.Length > 0)
{
var watcherArgs = new DirectoryWatcherFilterMatchedEventArgs <DirectoryItemAddedEventArgs>(args, matches);
EventHandler <DirectoryWatcherFilterMatchedEventArgs <DirectoryItemAddedEventArgs> > handler = ItemAdded;
handler?.Invoke(this, watcherArgs);
}
}
protected virtual void OnRaiseItemAdded(IDirectoryItem newItem)
{
// Make a temporary copy of the event to avoid possibility of
// a race condition if the last subscriber unsubscribes
// immediately after the null check and before the event is raised.
EventHandler <DirectoryItemAddedEventArgs> handler = ItemAdded;
// Event will be null if there are no subscribers
if (handler != null)
{
var args = new DirectoryItemAddedEventArgs(newItem);
// Use the () operator to raise the event.
handler(this, args);
}
}
