Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/UI/WebControls/RoleGroupCollection.cs

@@ -0,0 +1,101 @@
+//------------------------------------------------------------------------------
+// <copyright file="RoleGroupCollection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI.WebControls {
+
+    using System.Collections;
+    using System.ComponentModel;
+    using System.Security.Principal;
+    using System.Drawing.Design;
+    using System.Web.Security;
+
+
+    /// <devdoc>
+    /// Collection of RoleGroups.
+    /// </devdoc>
+    [
+    Editor("System.Web.UI.Design.WebControls.RoleGroupCollectionEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor))
+    ]
+    public sealed class RoleGroupCollection : CollectionBase {
+
+
+        public RoleGroup this[int index] {
+            get {
+                return (RoleGroup)List[index];
+            }
+        }
+
+
+        public void Add(RoleGroup group) {
+            List.Add(group);
+        }
+
+
+        public void CopyTo(RoleGroup[] array, int index) {
+            List.CopyTo(array, index);
+        }
+
+
+        public bool Contains(RoleGroup group) {
+            return List.Contains(group);
+        }
+
+
+        /// <devdoc>
+        /// The first RoleGroup that contains the user.
+        /// </devdoc>
+        public RoleGroup GetMatchingRoleGroup(IPrincipal user) {
+            int index = GetMatchingRoleGroupInternal(user);
+            if (index != -1) {
+                return this[index];
+            }
+            return null;
+        }
+
+        /// <devdoc>
+        /// Index of the first RoleGroup that contains the user.  Internal because called from LoginView.
+        /// </devdoc>
+        internal int GetMatchingRoleGroupInternal(IPrincipal user) {
+            if (user == null) {
+                throw new ArgumentNullException("user");
+            }
+            int i = 0;
+            foreach (RoleGroup group in this) {
+                if (group.ContainsUser(user)) {
+                    return i;
+                }
+                i++;
+            }
+            return -1;
+        }
+
+
+        public int IndexOf(RoleGroup group) {
+            return List.IndexOf(group);
+        }
+
+
+        public void Insert(int index, RoleGroup group) {
+            List.Insert(index, group);
+        }
+
+
+        protected override void OnValidate(object value) {
+            base.OnValidate(value);
+            if (!(value is RoleGroup)) {
+                throw new ArgumentException(SR.GetString(SR.RoleGroupCollection_InvalidType), "value");
+            }
+        }
+
+
+        public void Remove(RoleGroup group) {
+            int index = IndexOf(group);
+            if (index >= 0) {
+                List.RemoveAt(index);
+            }
+        }
+    }
+}