裝飾模式(Decorator Pattern)：

動(dòng)態(tài)地給一個(gè)對(duì)象增加一些額外的職責(zé)，就增加對(duì)象功能來(lái)說(shuō)，裝飾模式比生成子類實(shí)現(xiàn)更為靈活。

模式角色與結(jié)構(gòu)：

示例代碼：

using System; using System.Collections.Generic; using System.Linq; using System.Text;namespace CSharp.DesignPattern.DecoratorPattern {class Program{static void Main(string[] args){Component component;Component componentDecorator;component = new Window();componentDecorator = new ScrollBarDecorator(component);componentDecorator.display();component = new TextBox();componentDecorator = new BlackBorderDecorator(component);componentDecorator.display();Console.ReadLine();}}// 抽象構(gòu)件abstract class Component{public abstract void display();}// 具體構(gòu)件class Window : Component{public override void display(){Console.WriteLine("Window...");}}class TextBox : Component{public override void display(){Console.WriteLine("TextBox...");}}// 抽象裝飾類class ComponentDecorator : Component{private Component component; // 維持對(duì)抽象構(gòu)件類型對(duì)象的引用public ComponentDecorator(Component component) // 注入抽象構(gòu)件類型的對(duì)象 {this.component = component;}public override void display(){component.display();}}// 具體裝飾類class ScrollBarDecorator : ComponentDecorator{public ScrollBarDecorator(Component component) : base(component){ }public override void display(){this.SetScrollBar();base.display();}public void SetScrollBar(){Console.WriteLine("Add Scroll Bar...");}}class BlackBorderDecorator : ComponentDecorator{public BlackBorderDecorator(Component component): base(component){ }public override void display(){this.SetBlackBorder();base.display();}public void SetBlackBorder(){Console.WriteLine("Add Black Border...");}} }

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轉(zhuǎn)載于:https://www.cnblogs.com/thlzhf/p/3993371.html

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