Should the user be able to select multiple options or just one?
If its just one - then the property should be an Enum not a List.
Something like this should work:
public partial class CollapsiblePanel : UserControl
{
public enum CollapseDirection
{
None,
Up,
Right,
Down,
Left,
All
}
# region Collapse Direction
[Browsable(true), DefaultValue("All"), Description("Direction panel collapses. 0-none, 1-up, 2-right, 3-down, 4-left, 5-all")]
[ListBindable(true), Editor(typeof(ComboBox), typeof(UITypeEditor))]
private CollapseDirection _direction = CollapseDirection.All;
public CollapseDirection Direction
{
get { return _direction; }
set
{
_direction = value;
callCollapseDirectionChanged();
}
}
public event Action CollapseDirectionChanged;
protected void callCollapseDirectionChanged()
{
Action handler = CollapseDirectionChanged;
DisplayButtons();
if (handler != null)
{
handler();
}
}
# endregion
public CollapsiblePanel()
{
InitializeComponent();
}
private void DisplayButtons()
{
switch (_direction)
{
case CollapseDirection.None:
buttonDown.Visible = false;
buttonUp.Visible = false;
buttonRight.Visible = false;
buttonLeft.Visible = false;
break;
case CollapseDirection.Up:
buttonDown.Visible = false;
buttonUp.Visible = true;
buttonRight.Visible = false;
buttonLeft.Visible = false;
break;
case CollapseDirection.Right:
buttonDown.Visible = false;
buttonUp.Visible = false;
buttonRight.Visible = true;
buttonLeft.Visible = false;
break;
case CollapseDirection.Down:
buttonDown.Visible = true;
buttonUp.Visible = false;
buttonRight.Visible = false;
buttonLeft.Visible = false;
break;
case CollapseDirection.Left:
buttonDown.Visible = false;
buttonUp.Visible = false;
buttonRight.Visible = false;
buttonLeft.Visible = true;
break;
case CollapseDirection.All:
buttonDown.Visible = true;
buttonUp.Visible = true;
buttonRight.Visible = true;
buttonLeft.Visible = true;
break;
}
}
}
- Note - this is guide - I haven't tested the code, but that should put you in the general direction of what you want to achieve.