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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Web.Mvc.Properties;
namespace System.Web.Mvc
{
public class ModelBinderDictionary : IDictionary<Type, IModelBinder>
{
private readonly Dictionary<Type, IModelBinder> _innerDictionary = new Dictionary<Type, IModelBinder>();
private IModelBinder _defaultBinder;
private ModelBinderProviderCollection _modelBinderProviders;
public ModelBinderDictionary()
: this(ModelBinderProviders.BinderProviders)
{
}
internal ModelBinderDictionary(ModelBinderProviderCollection modelBinderProviders)
{
_modelBinderProviders = modelBinderProviders;
}
public int Count
{
get { return _innerDictionary.Count; }
}
public IModelBinder DefaultBinder
{
get
{
if (_defaultBinder == null)
{
_defaultBinder = new DefaultModelBinder();
}
return _defaultBinder;
}
set { _defaultBinder = value; }
}
public bool IsReadOnly
{
get { return ((IDictionary<Type, IModelBinder>)_innerDictionary).IsReadOnly; }
}
public ICollection<Type> Keys
{
get { return _innerDictionary.Keys; }
}
public ICollection<IModelBinder> Values
{
get { return _innerDictionary.Values; }
}
public IModelBinder this[Type key]
{
get
{
IModelBinder binder;
_innerDictionary.TryGetValue(key, out binder);
return binder;
}
set { _innerDictionary[key] = value; }
}
public void Add(KeyValuePair<Type, IModelBinder> item)
{
((IDictionary<Type, IModelBinder>)_innerDictionary).Add(item);
}
public void Add(Type key, IModelBinder value)
{
_innerDictionary.Add(key, value);
}
public void Clear()
{
_innerDictionary.Clear();
}
public bool Contains(KeyValuePair<Type, IModelBinder> item)
{
return ((IDictionary<Type, IModelBinder>)_innerDictionary).Contains(item);
}
public bool ContainsKey(Type key)
{
return _innerDictionary.ContainsKey(key);
}
public void CopyTo(KeyValuePair<Type, IModelBinder>[] array, int arrayIndex)
{
((IDictionary<Type, IModelBinder>)_innerDictionary).CopyTo(array, arrayIndex);
}
public IModelBinder GetBinder(Type modelType)
{
return GetBinder(modelType, true /* fallbackToDefault */);
}
public virtual IModelBinder GetBinder(Type modelType, bool fallbackToDefault)
{
if (modelType == null)
{
throw new ArgumentNullException("modelType");
}
return GetBinder(modelType, (fallbackToDefault) ? DefaultBinder : null);
}
private IModelBinder GetBinder(Type modelType, IModelBinder fallbackBinder)
{
// Try to look up a binder for this type. We use this order of precedence:
// 1. Binder returned from provider
// 2. Binder registered in the global table
// 3. Binder attribute defined on the type
// 4. Supplied fallback binder
IModelBinder binder = _modelBinderProviders.GetBinder(modelType);
if (binder != null)
{
return binder;
}
if (_innerDictionary.TryGetValue(modelType, out binder))
{
return binder;
}
binder = ModelBinders.GetBinderFromAttributes(modelType,
() => String.Format(CultureInfo.CurrentCulture, MvcResources.ModelBinderDictionary_MultipleAttributes, modelType.FullName));
return binder ?? fallbackBinder;
}
public IEnumerator<KeyValuePair<Type, IModelBinder>> GetEnumerator()
{
return _innerDictionary.GetEnumerator();
}
public bool Remove(KeyValuePair<Type, IModelBinder> item)
{
return ((IDictionary<Type, IModelBinder>)_innerDictionary).Remove(item);
}
public bool Remove(Type key)
{
return _innerDictionary.Remove(key);
}
public bool TryGetValue(Type key, out IModelBinder value)
{
return _innerDictionary.TryGetValue(key, out value);
}
#region IEnumerable Members
IEnumerator IEnumerable.GetEnumerator()
{
return ((IEnumerable)_innerDictionary).GetEnumerator();
}
#endregion
}
}
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