ParsedAttributeCollection.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / ParsedAttributeCollection.cs / 1 / ParsedAttributeCollection.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI { 
    using System; 
    using System.Collections;
    using System.Collections.Specialized; 
    using System.Globalization;
    using System.Web.Util;

 
    /// 
    /// Contains parsed attributes organized by filter. 
    /// The IDictionary implementation uses the combination of all filters using filter:attrName as the attribute names 
    /// 
    internal sealed class ParsedAttributeCollection : IDictionary { 
        private IDictionary _filterTable;
        private IDictionary _allFiltersDictionary;

        internal ParsedAttributeCollection() { 
            _filterTable = new ListDictionary(StringComparer.OrdinalIgnoreCase);
        } 
 
        /// 
        /// Returns the combination of all filters using filter:attrName as the attribute names 
        /// 
        private IDictionary AllFiltersDictionary {
            get {
                if (_allFiltersDictionary == null) { 
                    _allFiltersDictionary = new ListDictionary(StringComparer.OrdinalIgnoreCase);
                    foreach (FilteredAttributeDictionary fac in _filterTable.Values) { 
                        foreach (DictionaryEntry entry in fac) { 
                            Debug.Assert(entry.Key != null);
                            _allFiltersDictionary[Util.CreateFilteredName(fac.Filter, entry.Key.ToString())] = entry.Value; 
                        }
                    }
                }
 
                return _allFiltersDictionary;
            } 
        } 

 
        /// 
        /// Adds a filtered attribute
        /// 
        public void AddFilteredAttribute(string filter, string name, string value) { 
            if (String.IsNullOrEmpty(name)) {
                throw ExceptionUtil.ParameterNullOrEmpty("name"); 
            } 

            if (value == null) { 
                throw new ArgumentNullException("value");
            }

            if (filter == null) { 
                filter = String.Empty;
            } 
 
            if (_allFiltersDictionary != null) {
                _allFiltersDictionary.Add(Util.CreateFilteredName(filter, name), value); 
            }

            FilteredAttributeDictionary filteredAttributes = (FilteredAttributeDictionary)_filterTable[filter];
            if (filteredAttributes == null) { 
                filteredAttributes = new FilteredAttributeDictionary(this, filter);
                _filterTable[filter] = filteredAttributes; 
            } 
            filteredAttributes.Data.Add(name, value);
        } 


        /// 
        /// Clears all attributes from the specified filter 
        /// 
        public void ClearFilter(string filter) { 
            if (filter == null) { 
                filter = String.Empty;
            } 

            if (_allFiltersDictionary != null) {
                ArrayList removeList = new ArrayList();
                foreach (string key in _allFiltersDictionary.Keys) { 
                    string attrName;
                    string currentFilter = Util.ParsePropertyDeviceFilter(key, out attrName); 
                    if (StringUtil.EqualsIgnoreCase(currentFilter, filter)) { 
                        removeList.Add(key);
                    } 
                }

                foreach (string key in removeList) {
                    _allFiltersDictionary.Remove(key); 
                }
            } 
 
            _filterTable.Remove(filter);
        } 


        /// 
        /// Gets the collection of FilteredAttributeDictionaries used by this collection. 
        /// 
        public ICollection GetFilteredAttributeDictionaries() { 
            return _filterTable.Values; 
        }
 

        /// 
        /// Removes the specified attribute from the specified filter.
        ///  
        public void RemoveFilteredAttribute(string filter, string name) {
            if (String.IsNullOrEmpty(name)) { 
                throw ExceptionUtil.ParameterNullOrEmpty("name"); 
            }
 
            if (filter == null) {
                filter = String.Empty;
            }
 
            if (_allFiltersDictionary != null) {
                _allFiltersDictionary.Remove(Util.CreateFilteredName(filter, name)); 
            } 

            FilteredAttributeDictionary filteredAttributes = (FilteredAttributeDictionary)_filterTable[filter]; 
            if (filteredAttributes != null) {
                filteredAttributes.Data.Remove(name);
            }
        } 

 
        ///  
        /// Replaces the specified attribute's value from the specified filter.
        ///  
        public void ReplaceFilteredAttribute(string filter, string name, string value) {
            if (String.IsNullOrEmpty(name)) {
                throw ExceptionUtil.ParameterNullOrEmpty("name");
            } 

            if (filter == null) { 
                filter = String.Empty; 
            }
 
            if (_allFiltersDictionary != null) {
                _allFiltersDictionary[Util.CreateFilteredName(filter, name)] = value;
            }
 
            FilteredAttributeDictionary filteredAttributes = (FilteredAttributeDictionary)_filterTable[filter];
            if (filteredAttributes == null) { 
                filteredAttributes = new FilteredAttributeDictionary(this, filter); 
                _filterTable[filter] = filteredAttributes;
            } 
            filteredAttributes.Data[name] = value;
        }

        #region IDictionary implementation 

        ///  
        bool IDictionary.IsFixedSize { 
            get {
                return false; 
            }
        }

 
        /// 
        bool IDictionary.IsReadOnly { 
            get { 
                return false;
            } 
        }


        ///  
        object IDictionary.this[object key] {
            get { 
                return AllFiltersDictionary[key]; 
            }
            set { 
                if (key == null) {
                    throw new ArgumentNullException("key");
                }
 
                string attrName;
                string filter = Util.ParsePropertyDeviceFilter(key.ToString(), out attrName); 
 
                ReplaceFilteredAttribute(filter, attrName, value.ToString());
            } 
        }


        ///  
        ICollection IDictionary.Keys {
            get { 
                return AllFiltersDictionary.Keys; 
            }
        } 


        /// 
        ICollection IDictionary.Values { 
            get {
                return AllFiltersDictionary.Values; 
            } 
        }
 

        /// 
        void IDictionary.Add(object key, object value) {
            if (key == null) { 
                throw new ArgumentNullException("key");
            } 
 
            if (value == null) {
                value = String.Empty; 
            }

            string attrName;
            string filter = Util.ParsePropertyDeviceFilter(key.ToString(), out attrName); 

            AddFilteredAttribute(filter, attrName, value.ToString()); 
        } 

 
        /// 
        bool IDictionary.Contains(object key) {
            return AllFiltersDictionary.Contains(key);
        } 

 
        ///  
        void IDictionary.Clear() {
            AllFiltersDictionary.Clear(); 
            _filterTable.Clear();
        }

 
        /// 
        IDictionaryEnumerator IDictionary.GetEnumerator() { 
            return AllFiltersDictionary.GetEnumerator(); 
        }
 

        /// 
        void IDictionary.Remove(object key) {
            if (key == null) { 
                throw new ArgumentNullException("key");
            } 
 
            string attrName;
            string filter = Util.ParsePropertyDeviceFilter(key.ToString(), out attrName); 

            RemoveFilteredAttribute(filter, attrName);
        }
        #endregion IDictionary implementation 

        #region ICollection implementation 
 
        /// 
        int ICollection.Count { 
            get {
                return AllFiltersDictionary.Count;
            }
        } 

 
        ///  
        bool ICollection.IsSynchronized {
            get { 
                return ((ICollection)AllFiltersDictionary).IsSynchronized;
            }
        }
 

        ///  
        object ICollection.SyncRoot { 
            get {
                return AllFiltersDictionary.SyncRoot; 
            }
        }

 
        /// 
        void ICollection.CopyTo(Array array, int index) { 
            AllFiltersDictionary.CopyTo(array, index); 
        }
 

        /// 
        IEnumerator IEnumerable.GetEnumerator() {
            return AllFiltersDictionary.GetEnumerator(); 
        }
        #endregion ICollection implementation 
    } 
}
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ParsedAttributeCollection.cs source code in C# .NET

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