76 lines
4.2 KiB
C#
76 lines
4.2 KiB
C#
namespace System.Web.ModelBinding {
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using System;
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using System.Globalization;
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// Provides configuration settings common to the new model binding system.
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public static class ModelBinderErrorMessageProviders {
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private static ModelBinderErrorMessageProvider _typeConversionErrorMessageProvider;
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private static ModelBinderErrorMessageProvider _valueRequiredErrorMessageProvider;
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public static ModelBinderErrorMessageProvider TypeConversionErrorMessageProvider {
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get {
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if (_typeConversionErrorMessageProvider == null) {
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_typeConversionErrorMessageProvider = DefaultTypeConversionErrorMessageProvider;
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}
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return _typeConversionErrorMessageProvider;
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}
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set {
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_typeConversionErrorMessageProvider = value;
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}
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}
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public static ModelBinderErrorMessageProvider ValueRequiredErrorMessageProvider {
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get {
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if (_valueRequiredErrorMessageProvider == null) {
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_valueRequiredErrorMessageProvider = DefaultValueRequiredErrorMessageProvider;
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}
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return _valueRequiredErrorMessageProvider;
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}
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set {
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_valueRequiredErrorMessageProvider = value;
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}
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}
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private static string DefaultTypeConversionErrorMessageProvider(ModelBindingExecutionContext modelBindingExecutionContext, ModelMetadata modelMetadata, object incomingValue) {
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return GetResourceCommon(modelBindingExecutionContext, modelMetadata, incomingValue, GetValueInvalidResource);
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}
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private static string DefaultValueRequiredErrorMessageProvider(ModelBindingExecutionContext modelBindingExecutionContext, ModelMetadata modelMetadata, object incomingValue) {
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return GetResourceCommon(modelBindingExecutionContext, modelMetadata, incomingValue, GetValueRequiredResource);
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}
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private static string GetResourceCommon(ModelBindingExecutionContext modelBindingExecutionContext, ModelMetadata modelMetadata, object incomingValue, Func<ModelBindingExecutionContext, string> resourceAccessor) {
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string displayName = modelMetadata.GetDisplayName();
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string errorMessageTemplate = resourceAccessor(modelBindingExecutionContext);
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string errorMessage = String.Format(CultureInfo.CurrentCulture, errorMessageTemplate, incomingValue, displayName);
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return errorMessage;
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}
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private static string GetUserResourceString(ModelBindingExecutionContext modelBindingExecutionContext, string resourceName) {
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#if UNDEF
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return GetUserResourceString(modelBindingExecutionContext, resourceName, DefaultModelBinder.ResourceClassKey);
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#endif
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return GetUserResourceString(modelBindingExecutionContext, resourceName, String.Empty);
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}
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// If the user specified a ResourceClassKey try to load the resource they specified.
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// If the class key is invalid, an exception will be thrown.
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// If the class key is valid but the resource is not found, it returns null, in which
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// case it will fall back to the MVC default error message.
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internal static string GetUserResourceString(ModelBindingExecutionContext modelBindingExecutionContext, string resourceName, string resourceClassKey) {
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return (!String.IsNullOrEmpty(resourceClassKey) && (modelBindingExecutionContext != null) && (modelBindingExecutionContext.HttpContext != null))
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? modelBindingExecutionContext.HttpContext.GetGlobalResourceObject(resourceClassKey, resourceName, CultureInfo.CurrentUICulture) as string
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: null;
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}
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private static string GetValueInvalidResource(ModelBindingExecutionContext modelBindingExecutionContext) {
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return GetUserResourceString(modelBindingExecutionContext, "PropertyValueInvalid") ?? SR.GetString(SR.ModelBinderConfig_ValueInvalid);
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}
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private static string GetValueRequiredResource(ModelBindingExecutionContext modelBindingExecutionContext) {
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return GetUserResourceString(modelBindingExecutionContext, "PropertyValueRequired") ?? SR.GetString(SR.ModelBinderConfig_ValueRequired);
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}
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}
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}
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