localized/ja/04-Refactoring/Refactoring/17-Extract_interface.cs

using System;

namespace JetBrains.ReSharper.Koans.Refactoring
{
    namespace ExtractInterface
    {
        // Extract Interface
        //
        // Extracts an interface based on the current class
        //
        // No keyboard shortcut. Invoke via Refactor This menu
        // <shortcut id="Refactor This...">Ctrl+Shift+R</shortcut>

        // 1. Extract interface
        //    Place text caret on type definition
        //    Invoke Refactor This → Extract Interface
        //    Confirm name of interface, location and which members
        //    If selecting private or protected members, ReSharper warns that they will be made public
        public class Person
        {
            public Person(string forename, string surname, int age)
            {
                Forename = forename;
                Surname = surname;
                Age = age;

                Dump();
            }

            public string Forename { get; private set; }
            public string Surname { get; private set; }

            public string Fullname
            {
                get { return Forename + " " + Surname; }
            }

            public int Age { get; private set; }

            private void Dump()
            {
                Console.WriteLine("{0} is {1} years old", Fullname, Age);
            }
        }

        // 2. Extract interface from hierarchy
        //    Place text caret on type definition
        //    Invoke Refactor This → Extract Interface
        //    Confirm name of interface, location and which members - list includes inherited members
        //    If selecting private or protected members, ReSharper warns that they will be made public
        public class DerivedPerson : BasePerson
        {
            public DerivedPerson(string forename, string surname, int age, string title)
                : base(forename, surname, age)
            {
                Title = title;
            }

            public string Title { get; private set; }
        }

        public class BasePerson
        {
            public BasePerson(string forename, string surname, int age)
            {
                Forename = forename;
                Surname = surname;
                Age = age;
            }

            public string Forename { get; private set; }
            public string Surname { get; private set; }
            public int Age { get; private set; }
        }
    }
}