FilteredAttributeCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / 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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