Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/componentmodel/DesignerAttribute.cs

@@ -0,0 +1,149 @@
+//------------------------------------------------------------------------------
+// <copyright file="DesignerAttribute.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+/*
+ */
+namespace System.ComponentModel {
+    using System;
+    using System.ComponentModel;
+    using System.ComponentModel.Design;
+    using System.Diagnostics;
+    using System.Globalization;
+    using System.Security.Permissions;
+    
+    /// <devdoc>
+    ///    <para>Specifies the class to use to implement design-time services.</para>
+    /// </devdoc>
+    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Interface, AllowMultiple = true, Inherited = true)]
+    public sealed class DesignerAttribute : Attribute {
+        private readonly string designerTypeName;
+        private readonly string designerBaseTypeName;
+        private string typeId;
+
+        /// <devdoc>
+        ///    <para>
+        ///       Initializes a new instance of the <see cref='System.ComponentModel.DesignerAttribute'/> class using the name of the type that
+        ///       provides design-time services.
+        ///    </para>
+        /// </devdoc>
+        public DesignerAttribute(string designerTypeName) {
+            string temp = designerTypeName.ToUpper(CultureInfo.InvariantCulture);
+            Debug.Assert(temp.IndexOf(".DLL") == -1, "Came across: " + designerTypeName + " . Please remove the .dll extension");
+            this.designerTypeName = designerTypeName;
+            this.designerBaseTypeName = typeof(IDesigner).FullName;
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Initializes a new instance of the <see cref='System.ComponentModel.DesignerAttribute'/> class using the type that provides
+        ///       design-time services.
+        ///    </para>
+        /// </devdoc>
+        public DesignerAttribute(Type designerType) {
+            this.designerTypeName = designerType.AssemblyQualifiedName;
+            this.designerBaseTypeName = typeof(IDesigner).FullName;
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Initializes a new instance of the <see cref='System.ComponentModel.DesignerAttribute'/> class using the designer type and the
+        ///       base class for the designer.
+        ///    </para>
+        /// </devdoc>
+        public DesignerAttribute(string designerTypeName, string designerBaseTypeName) {
+            string temp = designerTypeName.ToUpper(CultureInfo.InvariantCulture);
+            Debug.Assert(temp.IndexOf(".DLL") == -1, "Came across: " + designerTypeName + " . Please remove the .dll extension");
+            this.designerTypeName = designerTypeName;
+            this.designerBaseTypeName = designerBaseTypeName;
+        }
+        
+        /// <devdoc>
+        ///    <para>
+        ///       Initializes a new instance of the <see cref='System.ComponentModel.DesignerAttribute'/> class, using the name of the designer
+        ///       class and the base class for the designer.
+        ///    </para>
+        /// </devdoc>
+        public DesignerAttribute(string designerTypeName, Type designerBaseType) {
+            string temp = designerTypeName.ToUpper(CultureInfo.InvariantCulture);
+            Debug.Assert(temp.IndexOf(".DLL") == -1, "Came across: " + designerTypeName + " . Please remove the .dll extension");
+            this.designerTypeName = designerTypeName;
+            this.designerBaseTypeName = designerBaseType.AssemblyQualifiedName;
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Initializes a new instance of the <see cref='System.ComponentModel.DesignerAttribute'/> class using the types of the designer and
+        ///       designer base class.
+        ///    </para>
+        /// </devdoc>
+        public DesignerAttribute(Type designerType, Type designerBaseType) {
+            this.designerTypeName = designerType.AssemblyQualifiedName;
+            this.designerBaseTypeName = designerBaseType.AssemblyQualifiedName;
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Gets
+        ///       the name of the base type of this designer.
+        ///    </para>
+        /// </devdoc>
+        public string DesignerBaseTypeName {
+            get {
+                return designerBaseTypeName;
+            }
+        }
+        
+        /// <devdoc>
+        ///    <para>
+        ///       Gets the name of the designer type associated with this designer attribute.
+        ///    </para>
+        /// </devdoc>
+        public string DesignerTypeName {
+            get {
+                return designerTypeName;
+            }
+        }
+        
+        /// <internalonly/>
+        /// <devdoc>
+        ///    <para>
+        ///       This defines a unique ID for this attribute type. It is used
+        ///       by filtering algorithms to identify two attributes that are
+        ///       the same type. For most attributes, this just returns the
+        ///       Type instance for the attribute. DesignerAttribute overrides
+        ///       this to include the type of the designer base type.
+        ///    </para>
+        /// </devdoc>
+        public override object TypeId {
+            get {
+                if (typeId == null) {
+                    string baseType = designerBaseTypeName;
+                    int comma = baseType.IndexOf(',');
+                    if (comma != -1) {
+                        baseType = baseType.Substring(0, comma);
+                    }
+                    typeId = GetType().FullName + baseType;
+                }
+                return typeId;
+            }
+        }
+
+        public override bool Equals(object obj) {
+            if (obj == this) {
+                return true;
+            }
+
+            DesignerAttribute other = obj as DesignerAttribute;
+
+            return (other != null) && other.designerBaseTypeName == designerBaseTypeName && other.designerTypeName == designerTypeName;
+        }
+
+        public override int GetHashCode() {
+            return designerTypeName.GetHashCode() ^ designerBaseTypeName.GetHashCode();
+        }
+    }
+}
+