public CollectionVariation GenerateInverseDictionaryVariation(EditableCollection TargetCollection, char AlterCode, object[] Parameters)
{
var NewCode = GenerateInverseDictionaryAlterCode(AlterCode);
var Result = new CollectionVariation(TargetCollection, NewCode, Parameters);
return(Result);
}
/// <summary>
/// Generates inverse assignment or invocation for the supplied source variation and sense.
/// </summary>
public TVariation GenerateInverseVariation <TVariation>(TVariation SourceVariation, EEditOperationAction RequiredActionSense) where TVariation : Variation
{
TVariation GeneratedVariation = null;
// If revert is required, then the call was made for the new undo registered in a currently executing redo.
// This is the primary and original registration order (ready to be undone).
// Else, if apply is required, then the call was made for the new redo registered in a currently executing undo.
// This is the secondary registration order (ready to be redone).
// In both cases the logic is the same.
if (SourceVariation is AssignmentVariation)
{
var OriginalVariation = SourceVariation as AssignmentVariation;
GeneratedVariation = (new AssignmentVariation(OriginalVariation.VariatingProperty, OriginalVariation.VariatingInstance,
OriginalVariation.VariatingValue)) as TVariation;
}
else
if (SourceVariation is CollectionVariation)
{
// Notice that the inversion only will take place for "Apply" (intended for Redo), because collection variations are stored ready for Undo.
/* if (RequiredActionSense == EEditOperationAction.Apply)
* { */
CollectionVariation OriginalVariation = SourceVariation as CollectionVariation;
if (OriginalVariation.VariatingCollection.GetType().Name == typeof(EditableList <>).Name)
{
GeneratedVariation = GenerateInverseListVariation(OriginalVariation.VariatingCollection,
OriginalVariation.VariatingAlterCode,
OriginalVariation.PassedParameters) as TVariation;
}
else
{
GeneratedVariation = GenerateInverseDictionaryVariation(OriginalVariation.VariatingCollection,
OriginalVariation.VariatingAlterCode,
OriginalVariation.PassedParameters) as TVariation;
}
/* }
* else
* GeneratedVariation = SourceVariation; */
}
else
{
var OriginalVariation = SourceVariation as CommandVariation;
var NewGroupVariation = new CommandVariation(OriginalVariation.CommandName,
OriginalVariation.AlterExistenceStatusWhileVariating);
foreach (Variation RegVariation in OriginalVariation.Variations)
{
var InverseVariation = GenerateInverseVariation(RegVariation, RequiredActionSense);
if (InverseVariation != null)
{
NewGroupVariation.AddVariation(InverseVariation);
}
}
NewGroupVariation.Variations.Reverse();
GeneratedVariation = NewGroupVariation as TVariation;
}
return(GeneratedVariation);
}