Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,121 @@
+//------------------------------------------------------------------------------
+// <copyright file="EditorAttribute.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+/*
+ */
+namespace System.ComponentModel {
+    
+    using System.Diagnostics;
+    using System.Globalization;
+    using System.Security.Permissions;
+                                
+    /// <devdoc>
+    ///    <para>Specifies the editor to use to change a property. This class cannot be inherited.</para>
+    /// </devdoc>
+    [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = true)]
+    public sealed class EditorAttribute : Attribute {
+
+        private string baseTypeName;
+        private string typeName;
+        private string typeId;
+        
+        /// <devdoc>
+        /// <para>Initializes a new instance of the <see cref='System.ComponentModel.EditorAttribute'/> class with the default editor, which is
+        ///    no editor.</para>
+        /// </devdoc>
+        public EditorAttribute() {
+            this.typeName = string.Empty;
+            this.baseTypeName = string.Empty;
+        }
+
+        /// <devdoc>
+        /// <para>Initializes a new instance of the <see cref='System.ComponentModel.EditorAttribute'/> class with the type name and base type
+        ///    name of the editor.</para>
+        /// </devdoc>
+        public EditorAttribute(string typeName, string baseTypeName) {
+            string temp = typeName.ToUpper(CultureInfo.InvariantCulture);
+            Debug.Assert(temp.IndexOf(".DLL") == -1, "Came across: " + typeName + " . Please remove the .dll extension");
+            this.typeName = typeName;
+            this.baseTypeName = baseTypeName;
+        }
+
+        /// <devdoc>
+        /// <para>Initializes a new instance of the <see cref='System.ComponentModel.EditorAttribute'/> class.</para>
+        /// </devdoc>
+        public EditorAttribute(string typeName, Type baseType) {
+            string temp = typeName.ToUpper(CultureInfo.InvariantCulture);
+            Debug.Assert(temp.IndexOf(".DLL") == -1, "Came across: " + typeName + " . Please remove the .dll extension");
+            this.typeName = typeName;
+            this.baseTypeName = baseType.AssemblyQualifiedName;
+        }
+
+        /// <devdoc>
+        /// <para>Initializes a new instance of the <see cref='System.ComponentModel.EditorAttribute'/>
+        /// class.</para>
+        /// </devdoc>
+        public EditorAttribute(Type type, Type baseType) {
+            this.typeName = type.AssemblyQualifiedName;
+            this.baseTypeName = baseType.AssemblyQualifiedName;
+        }
+
+        /// <devdoc>
+        ///    <para>Gets the name of the base class or interface serving as a lookup key for this editor.</para>
+        /// </devdoc>
+        public string EditorBaseTypeName {
+            get {
+                return baseTypeName;
+            }
+        }
+
+        /// <devdoc>
+        ///    <para>Gets the name of the editor class.</para>
+        /// </devdoc>
+        public string EditorTypeName {
+            get {
+                return typeName;
+            }
+        }
+    
+        /// <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. EditorAttribute overrides
+        ///       this to include the type of the editor base type.
+        ///    </para>
+        /// </devdoc>
+        public override object TypeId {
+            get {
+                if (typeId == null) {
+                    string baseType = baseTypeName;
+                    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;
+            }
+
+            EditorAttribute other = obj as EditorAttribute;
+
+            return (other != null) && other.typeName == typeName && other.baseTypeName == baseTypeName;
+        }
+
+        public override int GetHashCode() {
+            return base.GetHashCode();
+        }
+    }
+}
+