/// <summary>
/// Called right before the file will be saved to disk.
/// </summary>
/// <param name="context"></param>
void IModelConversionExtension.OnBeforeFileSaved(ModelConversionExtensionContext context)
{
// context.CurrentDocument = The .edmx content (as an XDocument) created by the Entity Designer.
// This is for reference and cannot be modified.
//
// context.OriginalDocument = The .edmx (as a string) after it has been converted to a custom file format.
}
/* These callbacks do not appear to be working */
/// <summary>
/// Called after the contents of a custom file have been loaded, but before the contents are converted
/// to an .edmx document for display in the Entity Designer.
/// </summary>
/// <param name="context"></param>
void IModelConversionExtension.OnAfterFileLoaded(ModelConversionExtensionContext context)
{
// context.OriginalDocument = Contents of the custom file as a string.
// This is for reference only and cannot be modified.
//
// context.CurrentDocument = Contents of the converted file as an XDocument.
// This should be a valid .edmx document.
}
internal static void DispatchToConversionExtensions(
ICollection<Lazy<IModelConversionExtension, IEntityDesignerConversionData>> exports, string fileExtension,
ModelConversionExtensionContext context, bool loading)
{
var converters = new List<string>();
if (exports != null)
{
foreach (var exportInfo in exports)
{
var converterFileExtension = exportInfo.Metadata.FileExtension;
if (converterFileExtension != null
&& !converterFileExtension.StartsWith(".", StringComparison.Ordinal))
{
converterFileExtension = "." + converterFileExtension;
}
if (string.Equals(fileExtension, converterFileExtension, StringComparison.OrdinalIgnoreCase))
{
if (converters.Count > 0)
{
break;
}
var extension = exportInfo.Value;
if (loading)
{
extension.OnAfterFileLoaded(context);
}
else
{
extension.OnBeforeFileSaved(context);
}
converters.Add(extension.GetType().FullName);
}
}
}
if (converters.Count == 0)
{
throw new InvalidOperationException(Resources.Extensibility_NoConverterForExtension);
}
else if (converters.Count > 1)
{
var convs = string.Empty;
for (var i = 0; i < converters.Count; i++)
{
if (i != 0)
{
convs += ", ";
}
convs += converters[i];
}
var message = string.Format(CultureInfo.CurrentCulture, Resources.Extensibility_TooManyConverters, convs);
throw new InvalidOperationException(message);
}
}
