/// <summary>
/// Disables all events until ResumeEvents is called. Implements reference counting to detect when to finally resume events, increasing performance by
/// preventing un-necessary event handling.
/// </summary>
public void SuspendEvents()
{
// Lock changes
lock (_syncRoot)
{
// Increment counter, do nothing when already suspended
if (_suspendEventsCount++ > 0)
{
return;
}
// Call method on all items
foreach (var item in Items)
{
item.SuspendEvents();
}
// Fire event
EventsSuspended?.Invoke(this, EventArgs.Empty);
}
}
/// <summary>
/// Called when events are suspended the first time, i.e. is not fired when nested.
/// Fires the <see cref="EventsSuspended"/> event.
/// </summary>
protected virtual void OnEventsSuspended()
{
// Fire event
EventsSuspended?.Invoke(this, EventArgs.Empty);
}
