private static object Deserialize(JsonSerializer serializer, JToken jtoken, ViewModelPropertyMap property, object existingValue)
{
if (property.JsonConverter != null && property.JsonConverter.CanRead && property.JsonConverter.CanConvert(property.Type))
{
return(property.JsonConverter.ReadJson(jtoken.CreateReader(), property.Type, existingValue, serializer));
}
else if (existingValue != null && property.Populate)
{
if (jtoken.Type == JTokenType.Null)
{
return(null);
}
else if (jtoken.Type == JTokenType.Object)
{
serializer.Converters.OfType <ViewModelJsonConverter>().First().Populate((JObject)jtoken, serializer, existingValue);
return(existingValue);
}
else
{
serializer.Populate(jtoken.CreateReader(), existingValue);
return(existingValue);
}
}
else
{
if (property.Type.GetTypeInfo().IsValueType&& jtoken.Type == JTokenType.Null)
{
return(Activator.CreateInstance(property.Type));
}
else
{
return(serializer.Deserialize(jtoken.CreateReader(), property.Type));
}
}
}
private void GenerateOptionsBlock(IList <Expression> block, ViewModelPropertyMap property, Dictionary <string, object> options, ParameterExpression writer)
{
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WritePropertyName(property.Name + "$options"), writer));
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteStartObject(), writer));
foreach (var option in options)
{
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WritePropertyName(option.Key), writer));
switch (option.Key)
{
case CLIENT_EXTENDERS_KEY:
{
// declare 'clientExtenders' as the array of objects
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteStartArray(), writer));
foreach (var extender in property.ClientExtenders)
{
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteStartObject(), writer));
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WritePropertyName("name"), writer));
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteValue(extender.Name), writer));
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WritePropertyName("parameter"), writer));
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteValue(extender.Parameter), writer));
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteEndObject(), writer));
}
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteEndArray(), writer));
break;
}
default:
// legacy code - direct { property : value }
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteValue(option.Value), writer));
break;
}
}
block.Add(ExpressionUtils.Replace <JsonWriter>(w => w.WriteEndObject(), writer));
}
/// <summary>
/// Gets the properties of the specified type.
/// </summary>
protected virtual IEnumerable <ViewModelPropertyMap> GetProperties(Type type)
{
foreach (var property in type.GetProperties(BindingFlags.Public | BindingFlags.Instance).OrderBy(p => p.Name))
{
if (property.GetCustomAttribute <JsonIgnoreAttribute>() != null)
{
continue;
}
var propertyMap = new ViewModelPropertyMap()
{
PropertyInfo = property,
Name = property.Name,
ViewModelProtection = ProtectMode.None,
Type = property.PropertyType,
TransferAfterPostback = property.GetMethod != null && property.GetMethod.IsPublic,
TransferFirstRequest = property.GetMethod != null && property.GetMethod.IsPublic,
TransferToServer = property.SetMethod != null && property.SetMethod.IsPublic,
JsonConverter = GetJsonConverter(property),
Populate = ViewModelJsonConverter.IsComplexType(property.PropertyType) && !ViewModelJsonConverter.IsEnumerable(property.PropertyType) && property.GetMethod != null
};
foreach (ISerializationInfoAttribute attr in property.GetCustomAttributes().OfType <ISerializationInfoAttribute>())
{
attr.SetOptions(propertyMap);
}
var bindAttribute = property.GetCustomAttribute <BindAttribute>();
if (bindAttribute != null)
{
propertyMap.Bind(bindAttribute.Direction);
if (bindAttribute.Name != null)
{
propertyMap.Name = bindAttribute.Name;
}
}
var viewModelProtectionAttribute = property.GetCustomAttribute <ProtectAttribute>();
if (viewModelProtectionAttribute != null)
{
propertyMap.ViewModelProtection = viewModelProtectionAttribute.Settings;
}
propertyMap.ClientExtenders =
property.GetCustomAttributes <ClientExtenderAttribute>()
.OrderBy(c => c.Order)
.Select(extender => new ClientExtenderInfo()
{
Name = extender.Name, Parameter = extender.Parameter
})
.ToList();
var validationAttributes = validationMetadataProvider.GetAttributesForProperty(property);
propertyMap.ValidationRules = validationRuleTranslator.TranslateValidationRules(property, validationAttributes).ToList();
propertyMap.ValidateSettings();
yield return(propertyMap);
}
}
public static ViewModelPropertyMap Bind(this ViewModelPropertyMap property, Direction direction)
{
property.TransferAfterPostback = direction.HasFlag(Direction.ServerToClientPostback);
property.TransferFirstRequest = direction.HasFlag(Direction.ServerToClientFirstRequest);
property.TransferToServer = direction.HasFlag(Direction.ClientToServerNotInPostbackPath) || direction.HasFlag(Direction.ClientToServerInPostbackPath);
property.TransferToServerOnlyInPath = !direction.HasFlag(Direction.ClientToServerNotInPostbackPath) && property.TransferToServer;
return(property);
}
/// <summary>
/// Gets the properties of the specified type.
/// </summary>
protected virtual IEnumerable <ViewModelPropertyMap> GetProperties(Type type)
{
foreach (var property in type.GetProperties(BindingFlags.Public | BindingFlags.Instance).OrderBy(p => p.Name))
{
if (property.GetCustomAttribute <JsonIgnoreAttribute>() != null)
{
continue;
}
var propertyMap = new ViewModelPropertyMap()
{
PropertyInfo = property,
Name = property.Name,
ViewModelProtection = ProtectMode.None,
Type = property.PropertyType,
TransferAfterPostback = property.GetMethod != null && property.GetMethod.IsPublic,
TransferFirstRequest = property.GetMethod != null && property.GetMethod.IsPublic,
TransferToServer = property.SetMethod != null && property.SetMethod.IsPublic,
JsonConverter = GetJsonConverter(property),
Populate = ViewModelJsonConverter.IsComplexType(property.PropertyType) && !ViewModelJsonConverter.IsEnumerable(property.PropertyType) && property.GetMethod != null
};
var bindAttribute = property.GetCustomAttribute <BindAttribute>();
if (bindAttribute != null)
{
propertyMap.TransferAfterPostback = bindAttribute.Direction.HasFlag(Direction.ServerToClientPostback);
propertyMap.TransferFirstRequest = bindAttribute.Direction.HasFlag(Direction.ServerToClientFirstRequest);
propertyMap.TransferToServer = bindAttribute.Direction.HasFlag(Direction.ClientToServerNotInPostbackPath) || bindAttribute.Direction.HasFlag(Direction.ClientToServerInPostbackPath);
propertyMap.TransferToServerOnlyInPath = !bindAttribute.Direction.HasFlag(Direction.ClientToServerNotInPostbackPath) && propertyMap.TransferToServer;
}
var viewModelProtectionAttribute = property.GetCustomAttribute <ProtectAttribute>();
if (viewModelProtectionAttribute != null)
{
propertyMap.ViewModelProtection = viewModelProtectionAttribute.Settings;
}
var clientExtenderList = property.GetCustomAttributes <ClientExtenderAttribute>();
if (clientExtenderList.Any())
{
clientExtenderList
.OrderBy(c => c.Order)
.ToList()
.ForEach(extender => propertyMap.ClientExtenders.Add(new ClientExtenderInfo()
{
Name = extender.Name, Parameter = extender.Parameter
}));
}
var validationAttributes = validationMetadataProvider.GetAttributesForProperty(property);
propertyMap.ValidationRules = validationRuleTranslator.TranslateValidationRules(property, validationAttributes).ToList();
yield return(propertyMap);
}
}
private static void Serialize(JsonSerializer serializer, JsonWriter writer, ViewModelPropertyMap property, object value)
{
if (property.JsonConverter != null && property.JsonConverter.CanWrite && property.JsonConverter.CanConvert(property.Type))
{
property.JsonConverter.WriteJson(writer, value, serializer);
}
else
{
serializer.Serialize(writer, value);
}
}
/// <summary>
/// Gets the properties of the specified type.
/// </summary>
protected virtual IEnumerable<ViewModelPropertyMap> GetProperties(Type type)
{
foreach (var property in type.GetProperties(BindingFlags.Public | BindingFlags.Instance).OrderBy(p => p.Name))
{
if (property.GetCustomAttribute<JsonIgnoreAttribute>() != null) continue;
var propertyMap = new ViewModelPropertyMap()
{
PropertyInfo = property,
Name = property.Name,
ViewModelProtection = ProtectMode.None,
Type = property.PropertyType,
TransferAfterPostback = property.GetMethod != null && property.GetMethod.IsPublic,
TransferFirstRequest = property.GetMethod != null && property.GetMethod.IsPublic,
TransferToServer = property.SetMethod != null && property.SetMethod.IsPublic,
JsonConverter = GetJsonConverter(property),
Populate = ViewModelJsonConverter.IsComplexType(property.PropertyType) && !ViewModelJsonConverter.IsEnumerable(property.PropertyType) && property.GetMethod != null
};
var bindAttribute = property.GetCustomAttribute<BindAttribute>();
if (bindAttribute != null)
{
propertyMap.TransferAfterPostback = bindAttribute.Direction.HasFlag(Direction.ServerToClientPostback);
propertyMap.TransferFirstRequest = bindAttribute.Direction.HasFlag(Direction.ServerToClientFirstRequest);
propertyMap.TransferToServer = bindAttribute.Direction.HasFlag(Direction.ClientToServerNotInPostbackPath) || bindAttribute.Direction.HasFlag(Direction.ClientToServerInPostbackPath);
propertyMap.TransferToServerOnlyInPath = !bindAttribute.Direction.HasFlag(Direction.ClientToServerNotInPostbackPath) && propertyMap.TransferToServer;
}
var viewModelProtectionAttribute = property.GetCustomAttribute<ProtectAttribute>();
if (viewModelProtectionAttribute != null)
{
propertyMap.ViewModelProtection = viewModelProtectionAttribute.Settings;
}
var clientExtenderList = property.GetCustomAttributes<ClientExtenderAttribute>();
if (clientExtenderList.Any())
{
clientExtenderList
.OrderBy(c => c.Order)
.ToList()
.ForEach(extender => propertyMap.ClientExtenders.Add(new ClientExtenderInfo() { Name = extender.Name, Parameter = extender.Parameter }));
}
var validationAttributes = validationMetadataProvider.GetAttributesForProperty(property);
propertyMap.ValidationRules = validationRuleTranslator.TranslateValidationRules(property, validationAttributes).ToList();
yield return propertyMap;
}
}
private static Expression GetSerializeExpression(ViewModelPropertyMap property, Expression jsonWriter, Expression value, Expression serializer)
{
if (property.JsonConverter?.CanWrite == true)
{
// maybe use the converter. It can't be easily inlined because polymorpism
return(ExpressionUtils.Replace((JsonSerializer s, JsonWriter w, object v) => Serialize(s, w, property, v), serializer, jsonWriter, Expression.Convert(value, typeof(object))));
}
else if (writeValueMethods.TryGetValue(value.Type, out var method))
{
return(Expression.Call(jsonWriter, method, new [] { value }));
}
else
{
return(Expression.Call(serializer, "Serialize", Type.EmptyTypes, new [] { jsonWriter, Expression.Convert(value, typeof(object)) }));
}
}
private void AddTypeOptions(Dictionary <string, object> options, ViewModelPropertyMap property)
{
if (property.TransferToClient || property.TransferToServer)
{
if ((property.Type == typeof(DateTime) || property.Type == typeof(DateTime?)) && property.JsonConverter == null) // TODO: allow customization using attributes
{
options["isDate"] = true;
}
else if (property.Type.IsNumericType())
{
options["type"] = property.Type.Name.ToLower();
}
else if (Nullable.GetUnderlyingType(property.Type)?.IsNumericType() == true)
{
options["type"] = Nullable.GetUnderlyingType(property.Type).Name.ToLower() + "?";
}
}
}
private static object Deserialize(JsonSerializer serializer, JToken jtoken, ViewModelPropertyMap property, object existingValue)
{
if (property.JsonConverter != null && property.JsonConverter.CanRead && property.JsonConverter.CanConvert(property.Type))
{
return property.JsonConverter.ReadJson(jtoken.CreateReader(), property.Type, existingValue, serializer);
}
else if (existingValue != null && property.Populate)
{
if (jtoken.Type == JTokenType.Null)
return null;
else if (jtoken.Type == JTokenType.Object)
{
serializer.Converters.OfType<ViewModelJsonConverter>().First().Populate((JObject)jtoken, serializer, existingValue);
return existingValue;
}
else
{
serializer.Populate(jtoken.CreateReader(), existingValue);
return existingValue;
}
}
else
{
return serializer.Deserialize(jtoken.CreateReader(), property.Type);
}
}
public static void Ignore(this ViewModelPropertyMap property)
{
property.Bind(Direction.None);
property.ValidationRules.Clear();
property.ClientExtenders.Clear();
}
public static ViewModelPropertyMap Protect(this ViewModelPropertyMap property, ProtectMode protectMode)
{
property.ViewModelProtection = protectMode;
return(property);
}
public static ViewModelPropertyMap AddClientExtender(this ViewModelPropertyMap property, ClientExtenderInfo clientExtender)
{
property.ClientExtenders.Add(clientExtender);
return(property);
}
public static ViewModelPropertyMap SetJsonConverter(this ViewModelPropertyMap property, JsonConverter converter)
{
property.JsonConverter = converter;
return(property);
}
public DotvvmPropertySerializationException(string message, Exception innerException, ViewModelPropertyMap serializedProperty)
: base(message, innerException)
{
SerializedProperty = serializedProperty;
}
private static void Serialize(JsonSerializer serializer, JsonWriter writer, ViewModelPropertyMap property, object value)
{
if (property.JsonConverter != null && property.JsonConverter.CanWrite && property.JsonConverter.CanConvert(property.Type))
{
property.JsonConverter.WriteJson(writer, value, serializer);
}
else
{
serializer.Serialize(writer, value);
}
}
private void GenerateOptionsBlock(IList<Expression> block, ViewModelPropertyMap property, Dictionary<string, object> options, ParameterExpression writer)
{
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WritePropertyName(property.Name + "$options"), writer));
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteStartObject(), writer));
foreach (var option in options)
{
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WritePropertyName(option.Key), writer));
switch (option.Key)
{
case CLIENT_EXTENDERS_KEY:
{
// declare 'clientExtenders' as the array of objects
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteStartArray(), writer));
foreach (var extender in property.ClientExtenders)
{
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteStartObject(), writer));
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WritePropertyName("name"), writer));
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteValue(extender.Name), writer));
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WritePropertyName("parameter"), writer));
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteValue(extender.Parameter), writer));
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteEndObject(), writer));
}
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteEndArray(), writer));
break;
}
default:
// legacy code - direct { property : value }
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteValue(option.Value), writer));
break;
}
}
block.Add(ExpressionUtils.Replace<JsonWriter>(w => w.WriteEndObject(), writer));
}
