379 lines
15 KiB
C#
379 lines
15 KiB
C#
// Accord Core Library
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// The Accord.NET Framework
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// http://accord-framework.net
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//
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// Copyright © César Souza, 2009-2017
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// cesarsouza at gmail.com
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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//
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.Specialized;
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using System.Linq;
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namespace UserControls
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{
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/// <summary>
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/// Ordered dictionary.
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/// </summary>
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///
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/// <remarks>
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/// This class provides a ordered dictionary implementation for C#/.NET. Unlike the rest
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/// of the framework, this class is available under a MIT license, so please feel free to
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/// re-use its source code in your own projects.
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/// </remarks>
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///
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/// <typeparam name="TKey">The types of the keys in the dictionary.</typeparam>
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/// <typeparam name="TValue">The type of values in the dictionary.</typeparam>
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///
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[Serializable]
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internal class OrderedDictionary<TKey, TValue> : IDictionary<TKey, TValue>
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{
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private List<TKey> list;
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private Dictionary<TKey, TValue> dictionary;
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/// <summary>
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/// Initializes a new instance of the <see cref="OrderedDictionary{TKey, TValue}"/> class.
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/// </summary>
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public OrderedDictionary()
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{
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this.dictionary = new Dictionary<TKey, TValue>();
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this.list = new List<TKey>();
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="OrderedDictionary{TKey, TValue}"/> class.
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/// </summary>
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///
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/// <param name="capacity">The initial number of elements that the <see cref="OrderedDictionary{TKey, TValue}"/> can contain.</param>
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///
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public OrderedDictionary(int capacity)
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{
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this.dictionary = new Dictionary<TKey, TValue>(capacity);
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this.list = new List<TKey>(capacity);
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="OrderedDictionary{TKey, TValue}"/> class.
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/// </summary>
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///
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/// <param name="comparer">The IEqualityComparer implementation to use when comparing keys, or null to use
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/// the default EqualityComparer for the type of the key.</param>
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///
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public OrderedDictionary(IEqualityComparer<TKey> comparer)
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{
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this.dictionary = new Dictionary<TKey, TValue>(comparer);
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this.list = new List<TKey>();
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="OrderedDictionary{TKey, TValue}"/> class.
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/// </summary>
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///
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/// <param name="capacity">The initial number of elements that the <see cref="OrderedDictionary{TKey, TValue}"/> can contain.</param>
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/// <param name="comparer">The IEqualityComparer implementation to use when comparing keys, or null to use
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/// the default EqualityComparer for the type of the key.</param>
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///
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public OrderedDictionary(int capacity, IEqualityComparer<TKey> comparer)
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{
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this.dictionary = new Dictionary<TKey, TValue>(capacity, comparer);
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this.list = new List<TKey>();
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="OrderedDictionary{TKey, TValue}"/> class.
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/// </summary>
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///
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/// <param name="dictionary">The System.Collections.Generic.IDictionary`2 whose elements are copied to the
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/// new <see cref="OrderedDictionary{TKey, TValue}"/>.</param>
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///
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public OrderedDictionary(IDictionary<TKey, TValue> dictionary)
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{
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this.dictionary = new Dictionary<TKey, TValue>(dictionary);
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this.list = new List<TKey>(this.dictionary.Keys);
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="OrderedDictionary{TKey, TValue}"/> class.
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/// </summary>
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///
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/// <param name="dictionary">The System.Collections.Generic.IDictionary`2 whose elements are copied to the
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/// new <see cref="OrderedDictionary{TKey, TValue}"/>.</param>
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/// <param name="comparer">The IEqualityComparer implementation to use when comparing keys, or null to use
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/// the default EqualityComparer for the type of the key.</param>
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///
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public OrderedDictionary(IDictionary<TKey, TValue> dictionary, IEqualityComparer<TKey> comparer)
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{
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this.dictionary = new Dictionary<TKey, TValue>(dictionary, comparer);
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this.list = new List<TKey>(this.dictionary.Keys);
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}
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/// <summary>
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/// Gets the <typeparam ref="TValue"/> at the specified index.
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/// </summary>
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///
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/// <param name="index">The index.</param>
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///
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public TKey GetKeyByIndex(int index)
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{
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return list[index];
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}
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/// <summary>
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/// Gets the <typeparam ref="TValue"/> at the specified index.
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/// </summary>
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///
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/// <param name="index">The index.</param>
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///
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public TValue GetValueByIndex(int index)
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{
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return this[GetKeyByIndex(index)];
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}
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/// <summary>
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/// Gets or sets the <typeparam ref="TValue"/> with the specified key.
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/// </summary>
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///
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/// <param name="key">The key.</param>
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///
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public TValue this[TKey key]
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{
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get { return dictionary[key]; }
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set
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{
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dictionary[key] = value;
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if (!list.Contains(key))
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list.Add(key);
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}
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}
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/// <summary>
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/// Gets an <see cref="T:System.Collections.Generic.ICollection`1" /> containing the keys of the <see cref="T:System.Collections.Generic.IDictionary`2" />.
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/// </summary>
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///
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/// <value>The keys.</value>
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///
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public ICollection<TKey> Keys
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{
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get { return list; }
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}
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/// <summary>
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/// Gets an <see cref="T:System.Collections.Generic.ICollection`1" /> containing the values in the <see cref="T:System.Collections.Generic.IDictionary`2" />.
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/// </summary>
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///
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public ICollection<TValue> Values
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{
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get { return list.Select(x => dictionary[x]).ToList(); }
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}
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/// <summary>
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/// Gets the number of elements contained in the <see cref="T:System.Collections.Generic.ICollection`1" />.
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/// </summary>
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///
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public int Count
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{
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get { return dictionary.Count; }
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}
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/// <summary>
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/// Gets a value indicating whether the <see cref="T:System.Collections.Generic.ICollection`1" /> is read-only.
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/// </summary>
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///
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/// <value><c>true</c> if this instance is read only; otherwise, <c>false</c>.</value>
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///
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public bool IsReadOnly
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{
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get { return ((IDictionary<TKey, TValue>)dictionary).IsReadOnly; }
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}
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/// <summary>
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/// Adds an element with the provided key and value to the <see cref="T:System.Collections.Generic.IDictionary`2" />.
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/// </summary>
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///
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/// <param name="key">The object to use as the key of the element to add.</param>
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/// <param name="value">The object to use as the value of the element to add.</param>
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///
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public void Add(TKey key, TValue value)
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{
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dictionary.Add(key, value);
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if (!list.Contains(key))
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list.Add(key);
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}
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/// <summary>
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/// Adds an item to the <see cref="T:System.Collections.Generic.ICollection`1" />.
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/// </summary>
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///
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/// <param name="item">The object to add to the <see cref="T:System.Collections.Generic.ICollection`1" />.</param>
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///
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public void Add(KeyValuePair<TKey, TValue> item)
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{
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((IDictionary<TKey, TValue>)dictionary).Add(item);
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if (!list.Contains(item.Key))
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list.Add(item.Key);
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}
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/// <summary>
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/// Replace an element with the provided key and value to the <see cref="T:System.Collections.Generic.IDictionary`2" />.
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/// </summary>
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///
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/// <param name="key">The object to use as the key of the element to add.</param>
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/// <param name="value">The object to use as the value of the element to add.</param>
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///
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public bool Replace(TKey oldKey, TKey newKey, Predicate<TKey> match, TValue value)
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{
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if (this.dictionary.Remove(oldKey))
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{
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this.dictionary.Add(newKey, value);
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//
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int index = this.list.FindIndex(match);
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this.list.RemoveAt(index);
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this.list.Insert(index, newKey);
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return true;
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}
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//
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return false;
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}
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/// <summary>
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/// Removes all items from the <see cref="T:System.Collections.Generic.ICollection`1" />.
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/// </summary>
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///
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public void Clear()
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{
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dictionary.Clear();
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list.Clear();
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}
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/// <summary>
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/// Determines whether the <see cref="T:System.Collections.Generic.ICollection`1" /> contains a specific value.
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/// </summary>
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///
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/// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.ICollection`1" />.</param>
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///
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/// <returns>true if <paramref name="item" /> is found in the <see cref="T:System.Collections.Generic.ICollection`1" />; otherwise, false.</returns>
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///
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public bool Contains(KeyValuePair<TKey, TValue> item)
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{
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return ((IDictionary<TKey, TValue>)dictionary).Contains(item);
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}
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/// <summary>
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/// Determines whether the <see cref="T:System.Collections.Generic.IDictionary`2" /> contains an element with the specified key.
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/// </summary>
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///
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/// <param name="key">The key to locate in the <see cref="T:System.Collections.Generic.IDictionary`2" />.</param>
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///
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/// <returns>true if the <see cref="T:System.Collections.Generic.IDictionary`2" /> contains an element with the key; otherwise, false.</returns>
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///
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public bool ContainsKey(TKey key)
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{
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return dictionary.ContainsKey(key);
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}
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/// <summary>
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/// Copies the elements of the <see cref="T:System.Collections.Generic.ICollection`1" /> to an <see cref="T:System.Array" />, starting at a particular <see cref="T:System.Array" /> index.
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/// </summary>
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///
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/// <param name="array">The one-dimensional <see cref="T:System.Array" /> that is the destination of the elements copied from <see cref="T:System.Collections.Generic.ICollection`1" />. The <see cref="T:System.Array" /> must have zero-based indexing.</param>
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/// <param name="arrayIndex">The zero-based index in <paramref name="array" /> at which copying begins.</param>
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///
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public void CopyTo(KeyValuePair<TKey, TValue>[] array, int arrayIndex)
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{
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foreach (KeyValuePair<TKey, TValue> pair in this)
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array[arrayIndex++] = pair;
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}
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/// <summary>
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/// Returns an enumerator that iterates through the collection.
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/// </summary>
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///
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/// <returns>An enumerator that can be used to iterate through the collection.</returns>
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///
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public IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator()
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{
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foreach (TKey key in list)
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yield return new KeyValuePair<TKey, TValue>(key, dictionary[key]);
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}
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/// <summary>
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/// Removes the element with the specified key from the <see cref="T:System.Collections.Generic.IDictionary`2" />.
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/// </summary>
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///
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/// <param name="key">The key of the element to remove.</param>
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///
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/// <returns>true if the element is successfully removed; otherwise, false. This method also returns false if <paramref name="key" /> was not found in the original <see cref="T:System.Collections.Generic.IDictionary`2" />.</returns>
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///
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public bool Remove(TKey key)
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{
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if (dictionary.Remove(key))
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{
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list.Remove(key);
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return true;
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}
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return false;
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}
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/// <summary>
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/// Removes the first occurrence of a specific object from the <see cref="T:System.Collections.Generic.ICollection`1" />.
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/// </summary>
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///
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/// <param name="item">The object to remove from the <see cref="T:System.Collections.Generic.ICollection`1" />.</param>
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///
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/// <returns>true if <paramref name="item" /> was successfully removed from the <see cref="T:System.Collections.Generic.ICollection`1" />; otherwise, false. This method also returns false if <paramref name="item" /> is not found in the original <see cref="T:System.Collections.Generic.ICollection`1" />.</returns>
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///
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public bool Remove(KeyValuePair<TKey, TValue> item)
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{
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if (((IDictionary<TKey, TValue>)dictionary).Remove(item))
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{
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list.Remove(item.Key);
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return true;
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}
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return false;
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}
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/// <summary>
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/// Gets the value associated with the specified key.
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/// </summary>
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///
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/// <param name="key">The key whose value to get.</param>
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/// <param name="value">When this method returns, the value associated with the specified key, if the key is found; otherwise, the default value for the type of the <paramref name="value" /> parameter. This parameter is passed uninitialized.</param>
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///
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/// <returns>true if the object that implements <see cref="T:System.Collections.Generic.IDictionary`2" /> contains an element with the specified key; otherwise, false.</returns>
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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 ((IDictionary<TKey, TValue>)dictionary).TryGetValue(key, out value);
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}
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/// <summary>
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/// Returns an enumerator that iterates through a collection.
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/// </summary>
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///
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/// <returns>An <see cref="T:System.Collections.IEnumerator" /> object that can be used to iterate through the collection.</returns>
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///
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IEnumerator IEnumerable.GetEnumerator()
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{
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return GetEnumerator();
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}
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}
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} |