Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / FilteredAttributeCollection.cs / 1 / FilteredAttributeCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.Collections; using System.Collections.Specialized; using System.Globalization; ////// Contains a filtered (by device filter) view of the attributes parsed from a tag /// internal sealed class FilteredAttributeDictionary : IDictionary { private string _filter; private IDictionary _data; private ParsedAttributeCollection _owner; internal FilteredAttributeDictionary(ParsedAttributeCollection owner, string filter) { _filter = filter; _owner = owner; _data = new ListDictionary(StringComparer.OrdinalIgnoreCase); } ////// The actual dictionary used for storing the data /// internal IDictionary Data { get { return _data; } } ////// The filter that this collection is filtering on /// public string Filter { get { return _filter; } } ////// Returns the value of a particular attribute for this filter /// public string this[string key] { get { return (string)_data[key]; } set { _owner.ReplaceFilteredAttribute(_filter, key, value); } } ////// Adds a new attribute for this filter /// public void Add(string key, string value) { _owner.AddFilteredAttribute(_filter, key, value); } ////// Clears all attributes for this filter /// public void Clear() { _owner.ClearFilter(_filter); } ////// Returns true if this filtered view contains the specified attribute /// public bool Contains(string key) { return _data.Contains(key); } ////// Removes the specified attribute for this filter /// public void Remove(string key) { _owner.RemoveFilteredAttribute(_filter, key); } #region IDictionary implementation ///bool IDictionary.IsFixedSize { get { return false; } } /// bool IDictionary.IsReadOnly { get { return false; } } /// object IDictionary.this[object key] { get { if (!(key is string)) { throw new ArgumentException(SR.GetString(SR.FilteredAttributeDictionary_ArgumentMustBeString), "key"); } return this[key.ToString()]; } set { if (!(key is string)) { throw new ArgumentException(SR.GetString(SR.FilteredAttributeDictionary_ArgumentMustBeString), "key"); } if (!(value is string)) { throw new ArgumentException(SR.GetString(SR.FilteredAttributeDictionary_ArgumentMustBeString), "value"); } this[key.ToString()] = value.ToString(); } } /// ICollection IDictionary.Keys { get { return _data.Keys; } } /// ICollection IDictionary.Values { get { return _data.Values; } } /// void IDictionary.Add(object key, object value) { if (key == null) { throw new ArgumentNullException("key"); } if (!(key is string)) { throw new ArgumentException(SR.GetString(SR.FilteredAttributeDictionary_ArgumentMustBeString), "key"); } if (!(value is string)) { throw new ArgumentException(SR.GetString(SR.FilteredAttributeDictionary_ArgumentMustBeString), "value"); } if (value == null) { value = String.Empty; } Add(key.ToString(), value.ToString()); } /// bool IDictionary.Contains(object key) { if (!(key is string)) { throw new ArgumentException(SR.GetString(SR.FilteredAttributeDictionary_ArgumentMustBeString), "key"); } return Contains(key.ToString()); } /// void IDictionary.Clear() { Clear(); } /// IDictionaryEnumerator IDictionary.GetEnumerator() { return _data.GetEnumerator(); } /// void IDictionary.Remove(object key) { Remove(key.ToString()); } #endregion IDictionary implementation #region ICollection implementation /// int ICollection.Count { get { return _data.Count; } } /// bool ICollection.IsSynchronized { get { return ((ICollection)_data).IsSynchronized; } } /// object ICollection.SyncRoot { get { return _data.SyncRoot; } } /// void ICollection.CopyTo(Array array, int index) { _data.CopyTo(array, index); } /// IEnumerator IEnumerable.GetEnumerator() { return _data.GetEnumerator(); } #endregion ICollection implementation } }
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