internal bool TryConvert(ref object value)
{
if (value == null)
{
return(!ReturnTypeInfo.IsValueType || ReturnTypeInfo.IsGenericType && ReturnTypeInfo.GetGenericTypeDefinition() == typeof(Nullable <>));
}
Type valueType = value.GetType();
Type type = ReturnType;
// Dont support arbitrary IConvertible by limiting which types can use this
Type[] convertableTo;
TypeConverter typeConverterTo;
if (SimpleConvertTypes.TryGetValue(valueType, out convertableTo) && Array.IndexOf(convertableTo, type) != -1)
{
value = Convert.ChangeType(value, type);
}
else if (WellKnownConvertTypes.TryGetValue(type, out typeConverterTo) && typeConverterTo.CanConvertFrom(valueType))
{
value = typeConverterTo.ConvertFromInvariantString(value.ToString());
}
else if (!ReturnTypeInfo.IsAssignableFrom(valueType.GetTypeInfo()))
{
// Is there an implicit cast operator ?
MethodInfo cast = type.GetRuntimeMethod("op_Implicit", new[] { valueType });
if (cast != null && cast.ReturnType != type)
{
cast = null;
}
if (cast == null)
{
cast = valueType.GetRuntimeMethod("op_Implicit", new[] { valueType });
}
if (cast != null && cast.ReturnType != type)
{
cast = null;
}
if (cast == null)
{
return(false);
}
value = cast.Invoke(null, new[] { value });
}
return(true);
}
internal bool TryConvert(ref object value)
{
if (value == null)
{
return(!ReturnTypeInfo.IsValueType || ReturnTypeInfo.IsGenericType && ReturnTypeInfo.GetGenericTypeDefinition() == typeof(Nullable <>));
}
Type valueType = value.GetType();
Type type = ReturnType;
// TODO This is temporary fix before deleting CreateByXaml flag in BindableProperty.
if (valueType.IsGenericType && valueType.GetGenericTypeDefinition() == typeof(Tizen.NUI.BaseComponents.Selector <>) && valueType.GetGenericArguments()[0] == ReturnType)
{
return(true);
}
// Dont support arbitrary IConvertible by limiting which types can use this
Type[] convertableTo;
TypeConverter typeConverterTo;
if (SimpleConvertTypes.TryGetValue(valueType, out convertableTo) && Array.IndexOf(convertableTo, type) != -1)
{
value = Convert.ChangeType(value, type);
}
else if (WellKnownConvertTypes.TryGetValue(type, out typeConverterTo) && typeConverterTo.CanConvertFrom(valueType))
{
value = typeConverterTo.ConvertFromInvariantString(value.ToString());
}
else if (UserCustomConvertTypes.TryGetValue(type, out typeConverterTo) && typeConverterTo.CanConvertFrom(valueType))
{
//Modification for NUI XAML : user defined converter for DynamicResource can be added
value = typeConverterTo.ConvertFromInvariantString(value.ToString());
}
else if (!ReturnTypeInfo.IsAssignableFrom(valueType.GetTypeInfo()))
{
var cast = type.GetImplicitConversionOperator(fromType: valueType, toType: type)
?? valueType.GetImplicitConversionOperator(fromType: valueType, toType: type);
if (cast == null)
{
return(false);
}
value = cast.Invoke(null, new[] { value });
}
return(true);
}
