[설계 패턴 C#] 8. 복합체 패턴

8. 복합체 패턴

---

Composite.zip

"본문 내용"은 언제나 휴일 본 사이트에 있습니다.

▶ Tree.cs

namespace Composite {     abstract class Tree     {         public string Name         {              get;              private set;         }         public Tree Parent         {             get;             set;         }           public abstract void View();         public virtual void AddChild(Tree child) //복합 개체에서만 필요한 기능         {         }         public virtual void RemoveChild(Tree child) //복합 개체에서만 필요한 기능         {         }           public int Size         {             get             {                 return Name.Length + Level*2;             }         }           public int Level         {             get             {                 int level = 0;                 Tree ancestor = Parent;                 while(ancestor!=null)                 {                     level++;                     ancestor = ancestor.Parent;                 }                 return level;             }         }                 public Tree(string name)         {             Name = name;             Parent = null;         }     } }

 

▶ Category.cs

using System; using System.Collections.Generic;   namespace Composite {     class Category:Tree     {         List<Tree> children = new List<Tree>();         public Category(string name):base(name)         {          }         public override void View()         {             Console.WriteLine("{0," + Size.ToString() + "}-C", Name);             foreach(Tree child in children)             {                 child.View();             }         }         public override void AddChild(Tree child) //Category에만 필요한 기능         {             child.Parent = this;             children.Add(child);         }         public override void RemoveChild(Tree child) //Category에만 필요한 기능         {             child.Parent = null;             children.Remove(child);         }     } }

 

▶ Path.cs

using System; namespace Composite {     class Path:Tree     {         public Path(string path):base(path)         {         }         public override void View()         {             Console.WriteLine("{0," + Size.ToString() + "}", Name);         }     } }

 

▶ Program.cs

namespace Composite {     class Program     {         static void Main(string[] args)         {             Tree tree = new Category("사진트리");             Tree date_tree = MakeDemoDateTree();             Tree location_tree = MakeDemoLocationTree();               tree.AddChild(date_tree);             tree.AddChild(location_tree);             tree.View();         }           static Tree MakeDemoLocationTree()         {             Tree tree = new Category("지역");             Tree sub1 = new Category("제주");             Tree sub2 = new Category("천안");             Tree sub3 = new Category("서울");             Tree sub4 = new Path("C:\\사진\\외도");             Tree sub2_1 = new Path("C:\\사진\\현충사의봄");                           sub2.AddChild(sub2_1);             tree.AddChild(sub1);             tree.AddChild(sub2);             tree.AddChild(sub3);             tree.AddChild(sub4);             return tree;         }           static Tree MakeDemoDateTree()         {             Tree tree = new Category("날짜");             Tree sub1 = new Category("20120429");             Tree sub2 = new Category("20120407");             Tree sub3 = new Category("20120507");               Tree sub1_1 = new Path("C:\\사진\\외도");             sub1.AddChild(sub1_1);             Tree sub2_1 = new Path("C:\\사진\\현충사의봄");             sub2.AddChild(sub2_1);             Tree sub3_1 = new Path("C:\\사진\\일산고구마모종");             sub3.AddChild(sub3_1);               tree.AddChild(sub1);             tree.AddChild(sub2);             tree.AddChild(sub3);               return tree;         }     } }