void DoKeyPress(Keys key)
{
if (OnKeyPressed != null)
{
Delegate[] delegates = OnKeyPressed.GetInvocationList();
var args = new KeyPressEventArgs(key);
for (int i = 0; i < delegates.Length; i++)
{
delegates[i].DynamicInvoke(this, args);
if (args.Handled)
{
return;
}
}
}
}
internal static bool DoKeyPressed(Keys k)
{
if (DoOnKeyRepeat(k, true))
{
return(true);
}
if (OnKeyPressed != null)
{
Delegate[] dels = OnKeyPressed.GetInvocationList();
//ctrl+shift is considered a universal override.
//it will reverse the order of event handling to allow global-level UI to handle keys/mouse before others.
if (KeyboardHandler.ControlPressed && KeyboardHandler.ShiftPressed)
{
List <Delegate> temp = new List <Delegate>(dels);
temp.Reverse();
dels = temp.ToArray();
}
if (dels.Length == 0)
{
return(false);
}
for (int i = dels.Length - 1; i >= 0; i--)
{
KeyEventHandler d = dels[i] as KeyEventHandler;
if (d == null) // cast error. should never happen.
{
continue;
}
if ((bool)d.DynamicInvoke(null, k))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// Unsubscribes all observers or the given observer from tracking events of this handler.
/// </summary>
/// <param name="target">The unsubscribing object.</param>
private void UnsubscribeAllOrTarget(object target = null)
{
if (OnKeyPressed != null)
{
foreach (Action action in OnKeyPressed.GetInvocationList())
{
if (target == null || action.Target == target)
{
OnKeyPressed -= action;
}
}
}
if (OnKeyDown != null)
{
foreach (Action action in OnKeyDown.GetInvocationList())
{
if (target == null || action.Target == target)
{
OnKeyDown -= action;
}
}
}
}