设计模式--抽象工厂

// 创建文本框抽象类
public abstract class TextBox
{
    public abstract string GetTextBox();
}

// 创建Windows样式（WinTextBox）和Mac OS样式（MacTextBox）的实现类
public class WinTextBox : TextBox
{
    public override string GetTextBox()
    {
        return "Windows 文本框";
    }
}

public class MacTextBox : TextBox
{
    public override string GetTextBox()
    {
        return "Mac OS 文本框";
    }
}

// 创建按钮抽象类
public abstract class Button
{
    public abstract string GetButton();
}

// 创建Windows样式（WinButton）和Mac OS样式（MacButton）的实现类
public class WinButton : Button
{
    public override string GetButton()
    {
        return "Windows 按钮";
    }
}

public class MacButton : Button
{
    public override string GetButton()
    {
        return "Mac OS 按钮";
    }
}

// 定义抽象工厂类
public abstract class AbstractFactory
{
    public abstract Button CreateButton();
    public abstract TextBox CreateTextBox();
}

// 定义Windows样式（WinFactory）和Mac OS样式（MacFactory）的具体工厂类
public class WinFactory : AbstractFactory
{
    public override Button CreateButton()
    {
        return new WinButton();
    }

    public override TextBox CreateTextBox()
    {
        return new WinTextBox();
    }
}

public class MacFactory : AbstractFactory
{
    public override Button CreateButton()
    {
        return new MacButton();
    }

    public override TextBox CreateTextBox()
    {
        return new MacTextBox();
    }
}

// 客户端代码
public class Client
{
    private AbstractFactory factory;

    public Client(AbstractFactory factory)
    {
        this.factory = factory;
    }

    public void Run()
    {
        var button = factory.CreateButton();
        var textBox = factory.CreateTextBox();
        Console.WriteLine(button.GetButton());
        Console.WriteLine(textBox.GetTextBox());
    }
}

// 用例
var winFactory = new WinFactory();
var macFactory = new MacFactory();

var winClient = new Client(winFactory);
winClient.Run();

var macClient = new Client(macFactory);
macClient.Run();