/// <summary>
/// DeletingRule: typeof(ReadingOrderHasRole)
/// Handles the clean up of the readings that the role is involved in by replacing
/// the place holder with the text DELETED
/// </summary>
private static void ReadingOrderHasRoleDeletingRule(ElementDeletingEventArgs e)
{
ReadingOrderHasRole link = e.ModelElement as ReadingOrderHasRole;
RoleBase linkRole = link.Role;
ReadingOrder linkReadingOrder = link.ReadingOrder;
if (linkReadingOrder.IsDeleting || linkReadingOrder.IsDeleted)
{
// Don't validate if we're removing the reading order
return;
}
FactType factType = linkReadingOrder.FactType;
if (factType != null)
{
FrameworkDomainModel.DelayValidateElement(factType, DelayValidateReadingOrderCollation);
}
int pos = linkReadingOrder.RoleCollection.IndexOf(linkRole);
if (pos >= 0)
{
bool isUnaryFactType = factType.UnaryRole != null;
LinkedElementCollection <Reading> readings = linkReadingOrder.ReadingCollection;
int numReadings = readings.Count;
int roleCount = linkReadingOrder.RoleCollection.Count;
for (int iReading = 0; iReading < numReadings; ++iReading)
{
Reading linkReading = readings[iReading];
if (!linkReading.IsDeleting)
{
Debug.Assert(!linkReading.IsDeleted);
string text = linkReading.Text;
IFormatProvider formatProvider = CultureInfo.InvariantCulture;
linkReading.SetAutoText(Reading.ReplaceFields(
linkReading.Text,
delegate(int replaceIndex)
{
if (replaceIndex == pos)
{
return(isUnaryFactType ? "" : ResourceStrings.ModelReadingRoleDeletedRoleText);
}
else if (replaceIndex > pos)
{
return("{" + (replaceIndex - 1).ToString(formatProvider) + "}");
}
return(null);
}
));
}
}
}
}
/// <summary>
/// Common place for code to deal with roles that exist in a fact
/// but do not exist in the ReadingOrder objects that it contains.
/// This allows it to be used by both the rule and to be called
/// during post load model fixup.
/// </summary>
private static void ValidateReadingOrdersRoleCollection(FactType factType, RoleBase addedRole)
{
LinkedElementCollection <ReadingOrder> readingOrders;
int orderCount;
if (null == factType.UnaryRole &&
0 != (orderCount = (readingOrders = factType.ReadingOrderCollection).Count))
{
bool checkedContext = false;
bool insertAfter = false;
RoleBase insertBeside = null;
IFormatProvider formatProvider = CultureInfo.InvariantCulture;
for (int i = 0; i < orderCount; ++i)
{
ReadingOrder ord = readingOrders[i];
LinkedElementCollection <RoleBase> roles = ord.RoleCollection;
if (!roles.Contains(addedRole))
{
if (!checkedContext)
{
checkedContext = true;
Dictionary <object, object> contextInfo = factType.Store.TransactionManager.CurrentTransaction.TopLevelTransaction.Context.ContextInfo;
object contextRole;
if (contextInfo.TryGetValue(FactType.InsertAfterRoleKey, out contextRole))
{
insertBeside = contextRole as RoleBase;
insertAfter = true;
}
else if (contextInfo.TryGetValue(FactType.InsertBeforeRoleKey, out contextRole))
{
insertBeside = contextRole as RoleBase;
}
}
int insertIndex = -1;
if (insertBeside != null)
{
insertIndex = roles.IndexOf(insertBeside);
}
if (insertIndex != -1)
{
roles.Insert(insertIndex + (insertAfter ? 1 : 0), addedRole);
}
else
{
roles.Add(addedRole);
}
LinkedElementCollection <Reading> readings = ord.ReadingCollection;
int readingCount = readings.Count;
if (readingCount != 0)
{
if (insertIndex == -1)
{
string appendText = string.Concat(" {", (roles.Count - 1).ToString(CultureInfo.InvariantCulture), "}");
for (int j = 0; j < readingCount; ++j)
{
Reading reading = readings[j];
reading.SetAutoText(reading.Text + appendText);
}
}
else
{
for (int j = 0; j < readingCount; ++j)
{
Reading reading = readings[j];
reading.SetAutoText(Reading.ReplaceFields(
reading.Text,
delegate(int replaceIndex)
{
// UNDONE: Respect leading/trailing hyphen binding and keep them associated
// with the corresponding role. Will require work well beyond the scope of this
// routine.
if (replaceIndex == insertIndex)
{
return(string.Concat("{", insertIndex.ToString(formatProvider), "} {", (insertIndex + 1).ToString(formatProvider), "}"));
}
else if (replaceIndex > insertIndex)
{
return(string.Concat("{", (replaceIndex + 1).ToString(formatProvider), "}"));
}
return(null); // Leave as is
}
));
}
}
}
}
}
}
}