/// <summary>
/// Executed when entering the page for selecting schema types.
/// It fires PageEntering event which ensures all types are loaded on the UI.
/// It also ensures all related entities are computed and cached.
/// </summary>
/// <param name="args">Event arguments being passed to the method.</param>
public override async Task OnPageEnteringAsync(WizardEnteringArgs args)
{
this.IsEntered = true;
await base.OnPageEnteringAsync(args).ConfigureAwait(false);
View = new SchemaTypes()
{
DataContext = this
};
PageEntering?.Invoke(this, EventArgs.Empty);
if (this.View is SchemaTypes view)
{
view.SelectedSchemaTypesCount.Text = SchemaTypes.Count(x => x.IsSelected).ToString(CultureInfo.InvariantCulture);
view.SelectedBoundOperationsCount.Text = SchemaTypes
.Where(x => x.IsSelected && x.BoundOperations?.Any() == true).SelectMany(x => x.BoundOperations)
.Count(x => x.IsSelected).ToString(CultureInfo.InvariantCulture);
}
}
/// <summary>
/// Creates a list of types that needs to be loaded on the UI.
/// Initially all the types are loaded
/// </summary>
/// <param name="schemaTypes">A list of schema types that need to be laoded.</param>
/// <param name="boundOperations">The associated bound operations.</param>
public void LoadSchemaTypes(
IEnumerable <IEdmSchemaType> schemaTypes, IDictionary <IEdmType, List <IEdmOperation> > boundOperations)
{
var toLoad = new List <SchemaTypeModel>();
foreach (var type in schemaTypes)
{
if (!SchemaTypeModelMap.ContainsKey(type.FullName()) ||
SchemaTypeModelMap.Count != schemaTypes.Count())
{
SchemaTypes = toLoad;
SchemaTypeModelMap.Clear();
break;
}
}
if (SchemaTypes.Any())
{
return;
}
foreach (var schemaType in schemaTypes)
{
var schemaTypeModel = new SchemaTypeModel
{
Name = schemaType.FullTypeName(),
ShortName = EdmHelper.GetTypeNameFromFullName(schemaType.FullTypeName())
};
// Create propertyChange handler.
// Anytime a property is selected/unslected, the handler ensures
// all the related types and operations are selected/unselected
schemaTypeModel.PropertyChanged += (s, args) =>
{
if (schemaTypeModel.IsSelected && schemaType is IEdmStructuredType structuredType)
{
//Check for the base type and automatically select it if not selected already.
string baseTypeFullName = structuredType.BaseType?.FullTypeName();
if (baseTypeFullName != null)
{
AddRelatedType(baseTypeFullName, structuredType.FullTypeName());
if (SchemaTypeModelMap.TryGetValue(baseTypeFullName,
out SchemaTypeModel baseTypeSchemaTypeModel) &&
!baseTypeSchemaTypeModel.IsSelected)
{
baseTypeSchemaTypeModel.IsSelected = true;
}
}
// Check the required property types and ensure they are selected as well
foreach (var property in structuredType.DeclaredProperties)
{
IEdmTypeReference propertyType = property.Type.IsCollection()
? property.Type.AsCollection().ElementType()
: property.Type;
if (propertyType.ToStructuredType() != null || propertyType.IsEnum())
{
string propertyTypeName = propertyType.ToStructuredType()?.FullTypeName() ?? propertyType.FullName();
AddRelatedType(propertyTypeName, structuredType.FullTypeName());
bool hasProperty = SchemaTypeModelMap.TryGetValue(propertyTypeName, out SchemaTypeModel propertySchemaTypeModel);
if (hasProperty && !propertySchemaTypeModel.IsSelected)
{
propertySchemaTypeModel.IsSelected = true;
}
}
}
// Check for bound operations and ensure related types are also selected.
// In this case related types means return types and parameter types.
if (boundOperations.TryGetValue(structuredType, out List <IEdmOperation> operations))
{
foreach (var operation in operations)
{
// Check if return type of associated bound operation has been selected.
if (operation.ReturnType != null &&
(operation.ReturnType.ToStructuredType() != null || operation.ReturnType.IsEnum()))
{
string returnTypeFullName =
operation.ReturnType.ToStructuredType()?.FullTypeName() ??
operation.ReturnType.FullName();
AddRelatedType(returnTypeFullName, structuredType.FullTypeName());
if (SchemaTypeModelMap.TryGetValue(returnTypeFullName,
out SchemaTypeModel referencedSchemaTypeModel) &&
!referencedSchemaTypeModel.IsSelected)
{
referencedSchemaTypeModel.IsSelected = true;
}
}
// Check if parameter types of associated bound operations has been selected.
IEnumerable <IEdmOperationParameter> parameters = operation.Parameters;
foreach (var parameter in parameters)
{
if (parameter.Type.ToStructuredType() != null || parameter.Type.IsEnum())
{
string parameterFullName =
parameter.Type.ToStructuredType()?.FullTypeName() ??
parameter.Type.FullName();
AddRelatedType(parameterFullName, structuredType.FullTypeName());
if (SchemaTypeModelMap.TryGetValue(parameterFullName,
out SchemaTypeModel model) && !model.IsSelected)
{
model.IsSelected = true;
}
}
}
}
}
}
else if (!schemaTypeModel.IsSelected)
{
// automatically deselect related types for deselected type
if (RelatedTypes.TryGetValue(schemaTypeModel.Name, out ICollection <string> relatedTypes))
{
foreach (var relatedType in relatedTypes)
{
if (SchemaTypeModelMap.TryGetValue(relatedType,
out SchemaTypeModel relatedSchemaTypeModel) &&
relatedSchemaTypeModel.IsSelected)
{
relatedSchemaTypeModel.IsSelected = false;
}
}
}
// deselect all related bound operations
foreach (var boundOperation in schemaTypeModel.BoundOperations)
{
boundOperation.IsSelected = false;
}
}
if (this.View is SchemaTypes view)
{
view.SelectedSchemaTypesCount.Text = SchemaTypes.Count(x => x.IsSelected).ToString(CultureInfo.InvariantCulture);
}
};
// load bound operations that require the schema type
var boundOperationsToLoad = boundOperations
.Where(x => x.Key == schemaType || x.Key.AsElementType() == schemaType)
.ToDictionary(x => x.Key, x => x.Value);
LoadBoundOperations(schemaTypeModel, boundOperationsToLoad,
ExcludedSchemaTypeNames.ToList(), SchemaTypeModelMap);
toLoad.Add(schemaTypeModel);
schemaTypeModel.IsSelected = true;
SchemaTypeModelMap.Add(schemaType.FullTypeName(), schemaTypeModel);
}
SchemaTypes = toLoad.OrderBy(o => o.Name).ToList();
_schemaTypesCount = SchemaTypes.Count();
_boundOperationsCount = SchemaTypes.Where(x => x?.BoundOperations?.Any() == true)
.SelectMany(x => x.BoundOperations).Count();
}