void FileSection_IndexChanged(object sender, FileSection.IndexChangedEventArgs e)
{
if (sender != this && Parent != null && Parent.IndexChanged != null)
{
Parent.IndexChanged(this, e);
}
}
void Parent_IndexChanged(object sender, FileSection.IndexChangedEventArgs e)
{
int displacement = e.Displacement;
if (displacement < -(ei + e.Location))
{
displacement = -(ei + e.Location);
}
if (e.Location > ei) //if the changed location is further down than this section extends, it does not affect it
{
return;
}
if (e.Location <= si)
{
si += displacement;
}
ei += displacement;
}