/// <summary>
/// Removes a label from the Substroke
/// </summary>
/// <param name="label">Label to remove</param>
/// <returns>The shape that was removed</returns>
public Shape RemoveLabel(ShapeType label)
{
if (_parentShape.Type == label)
{
_parentShape.RemoveSubstroke(this);
return(_parentShape);
}
return(null);
}
/// <summary>
/// Removes a Substroke from the Sketch. Removes parent stroke if
/// this substroke is the only substroke in the stroke.
/// </summary>
/// <param name="substroke">Substroke to remove</param>
/// <returns>True iff Substroke is removed</returns>
public bool RemoveSubstroke(Substroke substroke)
{
Stroke parentStroke = substroke.ParentStroke;
// Remove this substrokes from parent shapes
// and remove all parent shapes that contain
// only this substroke
object[] parentShapes = substroke.ParentShapes.ToArray();
for (int i = 0; i < parentShapes.Length; ++i)
{
if (parentShapes[i] != null)
{
Shape currentShape = (Shape)parentShapes[i];
if (currentShape.Substrokes.Length == 1)
{
RemoveShape(currentShape);
}
else
{
currentShape.RemoveSubstroke(substroke);
}
}
}
// Remove the substroke from the parent stroke,
// or, if the substroke is its parent stroke's only
// child, remove the parent stroke.
if (parentStroke.Substrokes.Length == 1)
{
return(RemoveStroke(parentStroke));
}
else
{
return(parentStroke.RemoveSubstroke(substroke));
}
}
