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Technosoftware/DaAeHdaClient/OpcItemCollection.cs

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+#region Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
+//-----------------------------------------------------------------------------
+// Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
+// Web: https://www.technosoftware.com 
+// 
+// The source code in this file is covered under a dual-license scenario:
+//   - Owner of a purchased license: SCLA 1.0
+//   - GPL V3: everybody else
+//
+// SCLA license terms accompanied with this source code.
+// See SCLA 1.0: https://technosoftware.com/license/Source_Code_License_Agreement.pdf
+//
+// GNU General Public License as published by the Free Software Foundation;
+// version 3 of the License are accompanied with this source code.
+// See https://technosoftware.com/license/GPLv3License.txt
+//
+// This source code is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.
+//-----------------------------------------------------------------------------
+#endregion Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
+
+#region Using Directives
+using System;
+using System.Collections;
+#endregion
+
+namespace Technosoftware.DaAeHdaClient
+{
+    /// <summary>
+    /// A collection of item identifiers.
+    /// </summary>
+    [Serializable]
+    public class OpcItemCollection : ICloneable, ICollection
+    {
+        /// <summary>
+        /// Creates an empty collection.
+        /// </summary>
+        public OpcItemCollection()
+        {
+            // do nothing.
+        }
+
+        /// <summary>
+        /// Initializes the object with any ItemIdentifiers contained in the collection.
+        /// </summary>
+        /// <param name="collection">A collection containing item ids.</param>
+        public OpcItemCollection(ICollection collection)
+        {
+            Init(collection);
+        }
+
+        /// <summary>
+        /// Returns the itemID at the specified index.
+        /// </summary>
+        public OpcItem this[int index]
+        {
+            get => itemIds_[index];
+            set => itemIds_[index] = value;
+        }
+
+        /// <summary>
+        /// Initializes the object with any item ids contained in the collection.
+        /// </summary>
+        /// <param name="collection">A collection containing item ids.</param>
+        public void Init(ICollection collection)
+        {
+            Clear();
+
+            if (collection != null)
+            {
+                var itemIds = new ArrayList(collection.Count);
+
+                foreach (var value in collection)
+                {
+                    if (value is OpcItem item)
+                    {
+                        itemIds.Add(item.Clone());
+                    }
+                }
+
+                itemIds_ = (OpcItem[])itemIds.ToArray(typeof(OpcItem));
+            }
+        }
+
+        /// <summary>
+        /// Removes all itemIDs in the collection.
+        /// </summary>
+        public void Clear()
+        {
+            itemIds_ = new OpcItem[0];
+        }
+
+        #region ICloneable Members
+        /// <summary>
+        /// Creates a deep copy of the object.
+        /// </summary>
+        public virtual object Clone()
+        {
+            return new OpcItemCollection(this);
+        }
+        #endregion
+
+        #region ICollection Members
+        /// <summary>
+        /// Indicates whether access to the ICollection is synchronized (thread-safe).
+        /// </summary>
+        public bool IsSynchronized => false;
+
+        /// <summary>
+        /// Gets the number of objects in the collection.
+        /// </summary>
+        public int Count => itemIds_?.Length ?? 0;
+
+        /// <summary>
+        /// Copies the objects to an Array, starting at a the specified index.
+        /// </summary>
+        /// <param name="array">The one-dimensional Array that is the destination for the objects.</param>
+        /// <param name="index">The zero-based index in the Array at which copying begins.</param>
+        public void CopyTo(Array array, int index)
+        {
+            itemIds_?.CopyTo(array, index);
+        }
+
+        /// <summary>
+        /// Copies the objects to an Array, starting at a the specified index.
+        /// </summary>
+        /// <param name="array">The one-dimensional Array that is the destination for the objects.</param>
+        /// <param name="index">The zero-based index in the Array at which copying begins.</param>
+        public void CopyTo(OpcItem[] array, int index)
+        {
+            CopyTo((Array)array, index);
+        }
+
+        /// <summary>
+        /// Indicates whether access to the ICollection is synchronized (thread-safe).
+        /// </summary>
+        public object SyncRoot => this;
+
+        #endregion
+
+        #region IEnumerable Members
+        /// <summary>
+        /// Returns an enumerator that can iterate through a collection.
+        /// </summary>
+        /// <returns>An IEnumerator that can be used to iterate through the collection.</returns>
+        public IEnumerator GetEnumerator()
+        {
+            return itemIds_.GetEnumerator();
+        }
+        #endregion
+
+        #region Private Members
+        private OpcItem[] itemIds_ = new OpcItem[0];
+        #endregion
+    }
+}