101 lines
4.9 KiB
C#
101 lines
4.9 KiB
C#
namespace System.Web.ModelBinding {
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel;
|
|
using System.ComponentModel.DataAnnotations;
|
|
using System.Linq;
|
|
|
|
public class DataAnnotationsModelMetadataProvider : AssociatedMetadataProvider {
|
|
|
|
protected override ModelMetadata CreateMetadata(IEnumerable<Attribute> attributes, Type containerType, Func<object> modelAccessor, Type modelType, string propertyName) {
|
|
List<Attribute> attributeList = new List<Attribute>(attributes);
|
|
DisplayColumnAttribute displayColumnAttribute = attributeList.OfType<DisplayColumnAttribute>().FirstOrDefault();
|
|
DataAnnotationsModelMetadata result = new DataAnnotationsModelMetadata(this, containerType, modelAccessor, modelType, propertyName, displayColumnAttribute);
|
|
|
|
#if UNDEF
|
|
// Do [HiddenInput] before [UIHint], so you can override the template hint
|
|
HiddenInputAttribute hiddenInputAttribute = attributeList.OfType<HiddenInputAttribute>().FirstOrDefault();
|
|
if (hiddenInputAttribute != null) {
|
|
result.TemplateHint = "HiddenInput";
|
|
result.HideSurroundingHtml = !hiddenInputAttribute.DisplayValue;
|
|
}
|
|
#endif
|
|
|
|
// We prefer [UIHint("...", PresentationLayer = "MVC")] but will fall back to [UIHint("...")]
|
|
IEnumerable<UIHintAttribute> uiHintAttributes = attributeList.OfType<UIHintAttribute>();
|
|
UIHintAttribute uiHintAttribute = uiHintAttributes.FirstOrDefault(a => String.Equals(a.PresentationLayer, "MVC", StringComparison.OrdinalIgnoreCase))
|
|
?? uiHintAttributes.FirstOrDefault(a => String.IsNullOrEmpty(a.PresentationLayer));
|
|
if (uiHintAttribute != null) {
|
|
result.TemplateHint = uiHintAttribute.UIHint;
|
|
}
|
|
|
|
DataTypeAttribute dataTypeAttribute = attributeList.OfType<DataTypeAttribute>().FirstOrDefault();
|
|
if (dataTypeAttribute != null) {
|
|
result.DataTypeName = dataTypeAttribute.ToDataTypeName();
|
|
}
|
|
|
|
EditableAttribute editable = attributes.OfType<EditableAttribute>().FirstOrDefault();
|
|
if (editable != null) {
|
|
result.IsReadOnly = !editable.AllowEdit;
|
|
}
|
|
else {
|
|
ReadOnlyAttribute readOnlyAttribute = attributeList.OfType<ReadOnlyAttribute>().FirstOrDefault();
|
|
if (readOnlyAttribute != null) {
|
|
result.IsReadOnly = readOnlyAttribute.IsReadOnly;
|
|
}
|
|
}
|
|
|
|
DisplayFormatAttribute displayFormatAttribute = attributeList.OfType<DisplayFormatAttribute>().FirstOrDefault();
|
|
if (displayFormatAttribute == null && dataTypeAttribute != null) {
|
|
displayFormatAttribute = dataTypeAttribute.DisplayFormat;
|
|
}
|
|
if (displayFormatAttribute != null) {
|
|
result.NullDisplayText = displayFormatAttribute.NullDisplayText;
|
|
result.DisplayFormatString = displayFormatAttribute.DataFormatString;
|
|
result.ConvertEmptyStringToNull = displayFormatAttribute.ConvertEmptyStringToNull;
|
|
|
|
if (displayFormatAttribute.ApplyFormatInEditMode) {
|
|
result.EditFormatString = displayFormatAttribute.DataFormatString;
|
|
}
|
|
|
|
if (!displayFormatAttribute.HtmlEncode && String.IsNullOrWhiteSpace(result.DataTypeName)) {
|
|
result.DataTypeName = DataTypeUtil.HtmlTypeName;
|
|
}
|
|
}
|
|
|
|
ScaffoldColumnAttribute scaffoldColumnAttribute = attributeList.OfType<ScaffoldColumnAttribute>().FirstOrDefault();
|
|
if (scaffoldColumnAttribute != null) {
|
|
result.ShowForDisplay = result.ShowForEdit = scaffoldColumnAttribute.Scaffold;
|
|
}
|
|
|
|
DisplayAttribute display = attributes.OfType<DisplayAttribute>().FirstOrDefault();
|
|
string name = null;
|
|
if (display != null) {
|
|
result.Description = display.GetDescription();
|
|
result.ShortDisplayName = display.GetShortName();
|
|
result.Watermark = display.GetPrompt();
|
|
result.Order = display.GetOrder() ?? ModelMetadata.DefaultOrder;
|
|
|
|
name = display.GetName();
|
|
}
|
|
|
|
if (name != null) {
|
|
result.DisplayName = name;
|
|
}
|
|
else {
|
|
DisplayNameAttribute displayNameAttribute = attributeList.OfType<DisplayNameAttribute>().FirstOrDefault();
|
|
if (displayNameAttribute != null) {
|
|
result.DisplayName = displayNameAttribute.DisplayName;
|
|
}
|
|
}
|
|
|
|
RequiredAttribute requiredAttribute = attributeList.OfType<RequiredAttribute>().FirstOrDefault();
|
|
if (requiredAttribute != null) {
|
|
result.IsRequired = true;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
}
|