/// <summary>
/// Displays info about any previous incarnations of the feature
/// currently selected for update.
/// </summary>
internal void Predecessors()
{
// Return if there is no predecessor.
LineFeature prevLine = GetPredecessor(m_SelectedFeature);
if (prevLine == null)
{
return;
}
// Get a list of all the predecessor lines
List <LineFeature> prev = new List <LineFeature>();
while (prevLine != null)
{
prev.Add(prevLine);
prevLine = prevLine.GetPredecessor();
}
// Display list of the edits
using (PickPredecessorForm dial = new PickPredecessorForm(prev.ToArray(), true))
{
if (dial.ShowDialog() == DialogResult.OK)
{
Run(dial.SelectedLine);
}
}
}
/// <summary>
/// Returns the first predecessor (if any) for a specific feature.
/// </summary>
/// <param name="feat"></param>
/// <returns>The predecessor (must be a line). Null if none.</returns>
internal static LineFeature GetPredecessor(Feature feat)
{
LineFeature line = (feat as LineFeature);
if (line == null)
{
return(null);
}
else
{
return(line.GetPredecessor());
}
}
