EditorAttribute.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / ComponentModel / EditorAttribute.cs / 1 / EditorAttribute.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 */ 
namespace System.ComponentModel {
 
    using System.Diagnostics;
    using System.Globalization;
    using System.Security.Permissions;
 
    /// 
    ///    Specifies the editor to use to change a property. This class cannot be inherited. 
    ///  
    [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = true)]
    public sealed class EditorAttribute : Attribute { 

        private string baseTypeName;
        private string typeName;
        private string typeId; 

        ///  
        /// Initializes a new instance of the  class with the default editor, which is 
        ///    no editor.
        ///  
        public EditorAttribute() {
            this.typeName = string.Empty;
            this.baseTypeName = string.Empty;
        } 

        ///  
        /// Initializes a new instance of the  class with the type name and base type 
        ///    name of the editor.
        ///  
        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;
        } 
 
        /// 
        /// Initializes a new instance of the  class. 
        /// 
        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; 
        } 

        ///  
        /// Initializes a new instance of the 
        /// class.
        /// 
        public EditorAttribute(Type type, Type baseType) { 
            this.typeName = type.AssemblyQualifiedName;
            this.baseTypeName = baseType.AssemblyQualifiedName; 
        } 

        ///  
        ///    Gets the name of the base class or interface serving as a lookup key for this editor.
        /// 
        public string EditorBaseTypeName {
            get { 
                return baseTypeName;
            } 
        } 

        ///  
        ///    Gets the name of the editor class.
        /// 
        public string EditorTypeName {
            get { 
                return typeName;
            } 
        } 

        ///  
        /// 
        ///    
        ///       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. 
        ///    
        ///  
        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();
        } 
    }
}

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