Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/UI/WebParts/CatalogPartCollection.cs

@@ -0,0 +1,83 @@
+//------------------------------------------------------------------------------
+// <copyright file="CatalogPartCollection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+namespace System.Web.UI.WebControls.WebParts {
+
+    using System;
+    using System.Collections;
+    using System.Globalization;
+
+    public sealed class CatalogPartCollection : ReadOnlyCollectionBase {
+
+        public static readonly CatalogPartCollection Empty = new CatalogPartCollection();
+
+        public CatalogPartCollection() {
+        }
+
+        public CatalogPartCollection(ICollection catalogParts) {
+            Initialize(null, catalogParts);
+        }
+
+        public CatalogPartCollection(CatalogPartCollection existingCatalogParts, ICollection catalogParts) {
+            Initialize(existingCatalogParts, catalogParts);
+        }
+
+        public CatalogPart this[int index] {
+            get {
+                return (CatalogPart) InnerList[index];
+            }
+        }
+
+        public CatalogPart this[string id] {
+            get {
+                foreach (CatalogPart catalogPart in InnerList) {
+                    if (String.Equals(catalogPart.ID, id, StringComparison.OrdinalIgnoreCase)) {
+                        return catalogPart;
+                    }
+                }
+
+                return null;
+            }
+        }
+
+        internal int Add(CatalogPart value) {
+            return InnerList.Add(value);
+        }
+
+        public bool Contains(CatalogPart catalogPart) {
+            return InnerList.Contains(catalogPart);
+        }
+
+        public void CopyTo(CatalogPart[] array, int index) {
+            InnerList.CopyTo(array, index);
+        }
+
+        public int IndexOf(CatalogPart catalogPart) {
+            return InnerList.IndexOf(catalogPart);
+        }
+
+        private void Initialize(CatalogPartCollection existingCatalogParts, ICollection catalogParts) {
+            if (existingCatalogParts != null) {
+                foreach (CatalogPart existingCatalogPart in existingCatalogParts) {
+                    // Don't need to check arg, since we know it is valid since it came
+                    // from a CatalogPartCollection.
+                    InnerList.Add(existingCatalogPart);
+                }
+            }
+
+            if (catalogParts != null) {
+                foreach (object obj in catalogParts) {
+                    if (obj == null) {
+                        throw new ArgumentException(SR.GetString(SR.Collection_CantAddNull), "catalogParts");
+                    }
+                    if (!(obj is CatalogPart)) {
+                        throw new ArgumentException(SR.GetString(SR.Collection_InvalidType, "CatalogPart"), "catalogParts");
+                    }
+                    InnerList.Add(obj);
+                }
+            }
+        }
+    }
+}