Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/componentmodel/design/DocumentCollection.cs

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+//------------------------------------------------------------------------------
+// <copyright file="DocumentCollection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+/*
+ */
+namespace System.ComponentModel.Design {
+    using Microsoft.Win32;
+    using System.Collections;
+    using System.ComponentModel;
+    using System.Diagnostics;
+    using System.Runtime.InteropServices;
+    using System.Security.Permissions;
+
+    /// <devdoc>
+    ///    <para>
+    ///       Provides a read-only collection of documents.
+    ///    </para>
+    /// </devdoc>
+    [HostProtection(SharedState = true)]
+    [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.InheritanceDemand, Name = "FullTrust")]
+    [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.LinkDemand, Name="FullTrust")]
+    public class DesignerCollection : ICollection {
+        private IList designers;
+
+        /// <devdoc>
+        ///    <para>
+        ///       Initializes a new instance of the <see cref='System.ComponentModel.Design.DesignerCollection'/> class
+        ///       that stores an array with a pointer to each <see cref='System.ComponentModel.Design.IDesignerHost'/>
+        ///       for each document in the collection.
+        ///    </para>
+        /// </devdoc>
+        public DesignerCollection(IDesignerHost[] designers) {
+            if (designers != null) {
+                this.designers = new ArrayList(designers);
+            }
+            else {
+                this.designers = new ArrayList();
+            }
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Initializes a new instance of the <see cref='System.ComponentModel.Design.DesignerCollection'/> class
+        ///       that stores an array with a pointer to each <see cref='System.ComponentModel.Design.IDesignerHost'/>
+        ///       for each document in the collection.
+        ///    </para>
+        /// </devdoc>
+        public DesignerCollection(IList designers) {
+            this.designers = designers;
+        }
+
+        /// <devdoc>
+        ///    <para>Gets or
+        ///       sets the number
+        ///       of documents in the collection.</para>
+        /// </devdoc>
+        public int Count {
+            get {
+                return designers.Count;
+            }
+        }
+
+        /// <devdoc>
+        ///    <para> Gets
+        ///       or sets the document at the specified index.</para>
+        /// </devdoc>
+        public virtual IDesignerHost this[int index] {
+            get {
+                return (IDesignerHost)designers[index];
+            }
+        }
+
+        /// <devdoc>
+        ///    <para>Creates and retrieves a new enumerator for this collection.</para>
+        /// </devdoc>
+        public IEnumerator GetEnumerator() {
+            return designers.GetEnumerator();
+        }
+
+        /// <internalonly/>
+        int ICollection.Count {
+            get {
+                return Count;
+            }
+        }
+      
+        /// <internalonly/>
+        bool ICollection.IsSynchronized {
+            get {
+                return false;
+            }
+        }
+
+        /// <internalonly/>
+        object ICollection.SyncRoot {
+            get {
+                return null;
+            }
+        }
+
+        /// <internalonly/>
+        void ICollection.CopyTo(Array array, int index) {
+            designers.CopyTo(array, index);
+        }
+
+        /// <internalonly/>
+        IEnumerator IEnumerable.GetEnumerator() {
+            return GetEnumerator();
+        }
+    }
+}
+