using System;
using System.Collections.Generic;
namespace DoFactory.GangOfFour.Factory.RealWorld
{
/// <summary>
/// MainApp startup class for Real-World
/// Factory Method Design Pattern.
/// </summary>
class MainApp
{
/// <summary>
/// Entry point into console application.
/// </summary>
static void Main()
{
// Note: constructors call Factory Method
Document[] documents = new Document[2];
documents[0] = new Resume();
documents[1] = new Report();
// Display document pages
foreach (Document document in documents)
{
Console.WriteLine("\n" + document.GetType().Name + "--");
foreach (Page page in document.Pages)
{
Console.WriteLine(" " + page.GetType().Name);
}
}
// Wait for user
Console.ReadKey();
}
}
/// <summary>
/// The 'Product' abstract class
/// </summary>
abstract class Page
{
}
/// <summary>
/// A 'ConcreteProduct' class
/// </summary>
class SkillsPage : Page
{
}
/// <summary>
/// A 'ConcreteProduct' class
/// </summary>
class EducationPage : Page
{
}
/// <summary>
/// A 'ConcreteProduct' class
/// </summary>
class ExperiencePage : Page
{
}
/// <summary>
/// A 'ConcreteProduct' class
/// </summary>
class IntroductionPage : Page
{
}
/// <summary>
/// A 'ConcreteProduct' class
/// </summary>
class ResultsPage : Page
{
}
/// <summary>
/// A 'ConcreteProduct' class
/// </summary>
class ConclusionPage : Page
{
}
/// <summary>
/// A 'ConcreteProduct' class
/// </summary>
class SummaryPage : Page
{
}
/// <summary>
/// A 'ConcreteProduct' class
/// </summary>
class BibliographyPage : Page
{
}
/// <summary>
/// The 'Creator' abstract class
/// </summary>
abstract class Document
{
private List<Page> _pages = new List<Page>();
// Constructor calls abstract Factory method
public Document()
{
this.CreatePages();
}
public List<Page> Pages
{
get { return _pages; }
}
// Factory Method
public abstract void CreatePages();
}
/// <summary>
/// A 'ConcreteCreator' class
/// </summary>
class Resume : Document
{
// Factory Method implementation
public override void CreatePages()
{
Pages.Add(new SkillsPage());
Pages.Add(new EducationPage());
Pages.Add(new ExperiencePage());
}
}
/// <summary>
/// A 'ConcreteCreator' class
/// </summary>
class Report : Document
{
// Factory Method implementation
public override void CreatePages()
{
Pages.Add(new IntroductionPage());
Pages.Add(new ResultsPage());
Pages.Add(new ConclusionPage());
Pages.Add(new SummaryPage());
Pages.Add(new BibliographyPage());
}
}
}