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+//
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+// ReadOnlyDictionary.cs
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+//
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+// Authors:
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+// Martin Baulig <[email protected]>
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+// Marek Safar ([email protected])
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+//
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+// Copyright (c) 2013 Xamarin Inc. (http://www.xamarin.com)
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+//
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+// Permission is hereby granted, free of charge, to any person obtaining a copy
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+// of this software and associated documentation files (the "Software"), to deal
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+// in the Software without restriction, including without limitation the rights
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+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+// copies of the Software, and to permit persons to whom the Software is
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+// furnished to do so, subject to the following conditions:
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+//
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+// The above copyright notice and this permission notice shall be included in
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+// all copies or substantial portions of the Software.
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+//
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+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+// THE SOFTWARE.
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+
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+#if NET_4_5
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+using System;
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+using System.Collections.Generic;
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+using System.Diagnostics;
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+
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+namespace System.Collections.ObjectModel {
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+
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+ [Serializable]
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+ [DebuggerDisplay ("Count={Count}")]
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+ [DebuggerTypeProxy (typeof (CollectionDebuggerView<,>))]
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+ public class ReadOnlyDictionary<TKey, TValue> : IDictionary<TKey, TValue>, IDictionary,
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+ IReadOnlyDictionary<TKey, TValue>
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+ {
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+ readonly IDictionary<TKey, TValue> inner;
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+
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+ public ReadOnlyDictionary (IDictionary<TKey, TValue> dictionary)
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+ {
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+ if (dictionary == null)
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+ throw new ArgumentNullException ("dictionary");
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+
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+ this.inner = dictionary;
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+ }
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+
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+ protected IDictionary<TKey, TValue> Dictionary {
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+ get {
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+ return inner;
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+ }
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+ }
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+
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+ public bool ContainsKey (TKey key)
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+ {
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+ return inner.ContainsKey (key);
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+ }
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+
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+ public bool TryGetValue (TKey key, out TValue value)
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+ {
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+ return inner.TryGetValue (key, out value);
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+ }
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+
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+ public TValue this [TKey key] {
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+ get {
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+ return inner [key];
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+ }
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+ }
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+
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+ public KeyCollection Keys {
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+ get {
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+ return new KeyCollection (inner.Keys);
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+ }
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+ }
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+
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+ public ValueCollection Values {
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+ get {
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+ return new ValueCollection (inner.Values);
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+ }
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+ }
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+
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+ #region IEnumerable<KeyValuePair<TKey, TValue>> implementation
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+ public IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator ()
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+ {
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+ return inner.GetEnumerator ();
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+ }
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+ #endregion
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+ #region IEnumerable implementation
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+ IEnumerator IEnumerable.GetEnumerator ()
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+ {
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+ return inner.GetEnumerator ();
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+ }
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+ #endregion
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+
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+ #region IDictionary<TKey, TValue> implementation
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+
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+ void IDictionary<TKey, TValue>.Add (TKey key, TValue value)
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+ {
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+ throw new NotSupportedException ();
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+ }
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+
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+ bool IDictionary<TKey, TValue>.Remove (TKey key)
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+ {
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+ throw new NotSupportedException ();
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+ }
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+
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+ TValue IDictionary<TKey, TValue>.this [TKey key] {
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+ get {
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+ return inner [key];
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+ }
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+ set {
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+ throw new NotSupportedException ();
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+ }
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+ }
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+
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+ ICollection<TKey> IDictionary<TKey, TValue>.Keys {
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+ get {
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+ return Keys;
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+ }
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+ }
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+
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+ ICollection<TValue> IDictionary<TKey, TValue>.Values {
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+ get {
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+ return Values;
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+ }
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+ }
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+
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+ #endregion
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+
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+ #region IDictionary implementation
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+
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+ void IDictionary.Add (object key, object value)
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+ {
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+ throw new NotSupportedException ();
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+ }
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+
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+ void IDictionary.Clear ()
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+ {
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+ throw new NotSupportedException ();
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+ }
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+
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+ bool IDictionary.Contains (object key)
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+ {
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+ return ((IDictionary)inner).Contains (key);
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+ }
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+
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+ IDictionaryEnumerator IDictionary.GetEnumerator ()
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+ {
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+ return ((IDictionary)inner).GetEnumerator ();
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+ }
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+
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+ void IDictionary.Remove (object key)
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+ {
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+ throw new NotSupportedException ();
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+ }
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+
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+ bool IDictionary.IsFixedSize {
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+ get {
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+ return true;
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+ }
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+ }
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+
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+ bool IDictionary.IsReadOnly {
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+ get {
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+ return true;
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+ }
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+ }
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+
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+ object IDictionary.this [object key] {
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+ get {
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+ return ((IDictionary)inner)[key];
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+ }
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+ set {
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+ throw new NotSupportedException ();
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+ }
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+ }
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+
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+ ICollection IDictionary.Keys {
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+ get {
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+ return Keys;
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+ }
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+ }
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+
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+ ICollection IDictionary.Values {
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+ get {
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+ return Values;
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+ }
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+ }
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+
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+ #endregion
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+
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+ #region ICollection implementation
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+
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+ void ICollection.CopyTo (Array array, int index)
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+ {
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+ ((ICollection)inner).CopyTo (array, index);
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+ }
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+
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+ #endregion
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+
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+ #region ICollection<KeyValuePair<TKey, TValue>> implementation
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+
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+ void ICollection<KeyValuePair<TKey, TValue>>.Add (KeyValuePair<TKey, TValue> item)
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+ {
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+ throw new NotSupportedException ();
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+ }
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+
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+ void ICollection<KeyValuePair<TKey, TValue>>.Clear ()
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+ {
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+ throw new NotSupportedException ();
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+ }
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+
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+ bool ICollection<KeyValuePair<TKey, TValue>>.Contains (KeyValuePair<TKey, TValue> item)
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+ {
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+ return ((ICollection<KeyValuePair<TKey, TValue>>)inner).Contains (item);
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+ }
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+
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+ void ICollection<KeyValuePair<TKey, TValue>>.CopyTo (KeyValuePair<TKey, TValue>[] array, int arrayIndex)
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+ {
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+ ((ICollection<KeyValuePair<TKey, TValue>>)inner).CopyTo (array, arrayIndex);
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+ }
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+
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+ bool ICollection<KeyValuePair<TKey, TValue>>.Remove (KeyValuePair<TKey, TValue> item)
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+ {
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+ throw new NotSupportedException ();
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+ }
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+
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+ bool ICollection<KeyValuePair<TKey, TValue>>.IsReadOnly {
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+ get {
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+ return true;
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+ }
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+ }
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+
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+ #endregion
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+
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+ #region ICollection implementation
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+
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+ public int Count {
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+ get {
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+ return inner.Count;
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+ }
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+ }
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+
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+ bool ICollection.IsSynchronized {
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+ get {
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+ return false;
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+ }
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+ }
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+
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+ object ICollection.SyncRoot {
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+ get {
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+ throw new NotSupportedException ();
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+ }
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+ }
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+
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+ #endregion
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+
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+ IEnumerable<TKey> IReadOnlyDictionary<TKey, TValue>.Keys {
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+ get {
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+ return Keys;
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+ }
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+ }
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+
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+ IEnumerable<TValue> IReadOnlyDictionary<TKey, TValue>.Values {
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+ get {
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+ return Values;
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+ }
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+ }
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+
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+ [Serializable]
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+ [DebuggerDisplay ("Count={Count}")]
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+ [DebuggerTypeProxy (typeof (CollectionDebuggerView<,>))]
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+ public sealed class KeyCollection : ICollection<TKey>, IEnumerable<TKey>, ICollection, IEnumerable
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+ {
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+ readonly ICollection<TKey> collection;
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+
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+ internal KeyCollection (ICollection<TKey> collection)
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+ {
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+ this.collection = collection;
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+ }
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+
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+ public void CopyTo (TKey [] array, int arrayIndex)
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+ {
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+ collection.CopyTo (array, arrayIndex);
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+ }
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+
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+ public IEnumerator<TKey> GetEnumerator ()
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+ {
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+ return collection.GetEnumerator ();
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+ }
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+
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+ void ICollection<TKey>.Add (TKey item)
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+ {
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+ throw new NotSupportedException ("this is a read-only collection");
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+ }
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+
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+ void ICollection<TKey>.Clear ()
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+ {
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+ throw new NotSupportedException ("this is a read-only collection");
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+ }
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+
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+ bool ICollection<TKey>.Contains (TKey item)
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+ {
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+ return collection.Contains (item);
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+ }
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+
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+ bool ICollection<TKey>.Remove (TKey item)
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+ {
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+ throw new NotSupportedException ("this is a read-only collection");
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+ }
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+
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+ void ICollection.CopyTo (Array array, int index)
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+ {
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+ var target = array as TKey [];
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+ if (target != null) {
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+ CopyTo (target, index);
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+ return;
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+ }
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+
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+ throw new NotImplementedException ();
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+ }
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+
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+ IEnumerator IEnumerable.GetEnumerator ()
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+ {
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+ return collection.GetEnumerator ();
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+ }
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+
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+ public int Count {
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+ get {
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+ return collection.Count;
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+ }
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+ }
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+
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+ bool ICollection<TKey>.IsReadOnly {
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+ get {
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+ return true;
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+ }
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+ }
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+
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+ bool ICollection.IsSynchronized {
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+ get {
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+ return false;
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+ }
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+ }
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+
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+ object ICollection.SyncRoot {
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+ get {
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+ throw new NotImplementedException ();
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+ }
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+ }
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+ }
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+
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+ [Serializable]
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+ [DebuggerDisplay ("Count={Count}")]
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+ [DebuggerTypeProxy (typeof (CollectionDebuggerView<,>))]
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+ public sealed class ValueCollection : ICollection<TValue>, IEnumerable<TValue>, ICollection, IEnumerable
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+ {
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+ readonly ICollection<TValue> collection;
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+
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+ internal ValueCollection (ICollection<TValue> collection)
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+ {
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+ this.collection = collection;
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+ }
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+
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+ public void CopyTo (TValue [] array, int arrayIndex)
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+ {
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+ collection.CopyTo (array, arrayIndex);
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+ }
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+
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+ public IEnumerator<TValue> GetEnumerator ()
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+ {
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+ return collection.GetEnumerator ();
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+ }
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+
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+ void ICollection<TValue>.Add (TValue item)
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+ {
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+ throw new NotSupportedException ("this is a read-only collection");
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+ }
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+
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+ void ICollection<TValue>.Clear ()
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+ {
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+ throw new NotSupportedException ("this is a read-only collection");
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+ }
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+
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+ bool ICollection<TValue>.Contains (TValue item)
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+ {
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+ return collection.Contains (item);
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+ }
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+
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+ bool ICollection<TValue>.Remove (TValue item)
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+ {
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+ throw new NotSupportedException ("this is a read-only collection");
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+ }
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+
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+ void ICollection.CopyTo (Array array, int index)
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+ {
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+ var target = array as TValue [];
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+ if (target != null) {
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+ CopyTo (target, index);
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+ return;
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+ }
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+
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+ throw new NotImplementedException ();
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+ }
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+
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+ IEnumerator IEnumerable.GetEnumerator ()
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+ {
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+ return collection.GetEnumerator ();
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+ }
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+
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+ public int Count {
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+ get {
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+ return collection.Count;
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+ }
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+ }
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+
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+ bool ICollection<TValue>.IsReadOnly {
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+ get {
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+ return true;
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+ }
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+ }
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+
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+ bool ICollection.IsSynchronized {
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+ get {
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+ return false;
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+ }
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+ }
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+
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+ object ICollection.SyncRoot {
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+ get {
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+ throw new NotImplementedException ();
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+ }
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+ }
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+ }
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+ }
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+}
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+#endif
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+
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