public SplitButtonExDecorator(SplitButtonEx button, ITheme theme)
{
_button = button;
_theme = theme;
_imageAlign = button.ImageAlign;
_image = button.Image;
_clickHandler = (EventHandler)GetClickEvent(_button);
button.Controls.Add(this);
}
private static void RemoveClickEvent(SplitButtonEx button)
{
try
{
var eventInstance = typeof(Control)
.GetField(EventClick, BindingFlags.Static | BindingFlags.NonPublic).GetValue(button);
var list = (EventHandlerList)typeof(SplitButtonEx)
.GetProperty("Events", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(button, null);
list.RemoveHandler(eventInstance, list[eventInstance]);
}
catch (NullReferenceException)
{
}
}
private void Apply(SplitButtonEx button)
{
if (_theme.Button.FlatStyle == FlatStyle.System)
{
return;
}
if (_enabled)
{
button.ImageAlign = ContentAlignment.MiddleRight;
button.Image = GetButtonDownArrow();
button.MouseClick += HandleButtonMouseClick;
RemoveClickEvent(_button);
}
else
{
button.ImageAlign = _imageAlign;
button.Image = _image;
button.MouseClick -= HandleButtonMouseClick;
button.Click += _clickHandler;
}
}
