private void RegisterCellWithSection(SectionCollection sectionCollection, FieldSectionType sectionType, SudokuCell cell)
{
RegistrationKey sectionKey = null;
switch (sectionType)
{
case FieldSectionType.Row:
sectionKey = CreateRowKey(cell);
break;
case FieldSectionType.Column:
sectionKey = CreateColumnKey(cell);
break;
case FieldSectionType.Block:
sectionKey = CreateBlockKey(cell);
break;
default:
throw new Exception("No fieldtype is set");
}
//retrieve the section from the collection
SilverSudokuSection theSection = sectionCollection.GetSectionByKey(sectionKey);
if (theSection == null)
{ //the section doesn't exist: create it and add it to the collection
theSection = new SilverSudokuSection(NumColumns, sectionKey);
theSection.SectionType = sectionType;
sectionCollection.Add(theSection);
}
theSection.RegisterCell(cell);
cell.Parents.Add(theSection);
}
/// <summary>
/// Retrieves a section by a key.
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public SilverSudokuSection GetSectionByKey(RegistrationKey key)
{
SilverSudokuSection retValue = null;
foreach (SilverSudokuSection section in sections)
{
if (section.Key.Equals(key))
{
retValue = section;
}
}
return(retValue);
}
public void Add(SilverSudokuSection section)
{
sections.Add(section);
}