private void breakButton_Click(object sender, EventArgs e)
{
LegFace face = this.CurrentFace;
StraightLeg leg = (face.Leg as StraightLeg);
if (leg == null)
{
return;
}
// You can't break a staggered leg (this should have already been trapped by disabling the button).
if (leg.IsStaggered)
{
MessageBox.Show("You cannot break a staggered leg.");
return;
}
// Get the selected distance
Distance dist = GetSel();
if (dist == null)
{
MessageBox.Show("You must first select a distance from the list.");
return;
}
// Are we breaking before or after the currently selected distance?
bool isBefore = brkBeforeRadioButton.Checked;
// You can't break at the very beginning or end of the leg.
int index = leg.PrimaryFace.GetIndex(dist);
if (isBefore && index == 0)
{
MessageBox.Show("You can't break at the very beginning of the leg.");
return;
}
if (!isBefore && (index + 1) == face.Count)
{
MessageBox.Show("You can't break at the very end of the leg.");
return;
}
// Break the leg.
if (!isBefore)
{
index++;
}
m_Edits.BreakLeg(m_CurFaceIndex, index);
StraightLeg newLeg = leg.Break(index);
if (newLeg == null)
{
return;
}
// Make the new leg the current one, and select the very first distance.
int faceIndex = m_Faces.IndexOf(face);
Debug.Assert(faceIndex >= 0);
m_Faces.Insert(faceIndex + 1, newLeg.PrimaryFace);
SetCurrentFace(faceIndex + 1);
Refresh(0);
}
