组合模式例子

#ifndef _H_COMMPONENT_H_
#define _H_COMMPONENT_H_
#include <list>
#include <string>
typedef std::string StringType;
class Component
{
public:
	virtual void Print() = 0;
};
typedef std::list<Component *> ListType;
class ComponentSet : public Component
{
public:
	ComponentSet(StringType name) : m_name(name) {}
	virtual void Print();
	void addEle(Component *ele);
	static void Test();
private:
	ListType m_comList;
protected:
	StringType m_name;
};
class WinForm : public ComponentSet
{
public:
	WinForm(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print WinForm(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class Picture : public ComponentSet
{
public:
	Picture(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print Picture(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class Botton : public ComponentSet
{
public:
	Botton(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print Botton(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class Frame : public ComponentSet
{
public:
	Frame(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print Frame(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class Lable : public ComponentSet
{
public:
	Lable(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print Lable(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class PasswordBox : public ComponentSet
{
public:
	PasswordBox(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print PasswordBox(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class CheckBox : public ComponentSet
{
public:
	CheckBox(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print CheckBox(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class TextBox : public ComponentSet
{
public:
	TextBox(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print TextBox(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class LinkLable : public ComponentSet
{
public:
	LinkLable(StringType name) : ComponentSet(name) {}
	void Print()
	{
		printf("print LinkLable(%s)\n", m_name.c_str());
		ComponentSet::Print();
	}
};
class TestUnit
{
public:
	static void Test();
};
#endif //_H_COMMPONENT_H_

#include <typeinfo>
#include "component.h"
void ComponentSet::Print()
{
	for (ListType::iterator itr = m_comList.begin(); itr != m_comList.end(); itr++)
	{
		(*itr)->Print();
	}
}
void ComponentSet::addEle(Component *ele)
{
	m_comList.push_back(ele);
}
// StringType ComponentSet::GetClassName()
// {
// 	StringType s = typeid(*this).name();
// 	return s.substr(1);
// }
void TestUnit::Test()
{
	WinForm win("WINDOW窗口");
	Picture pic("LOGO图片");
	Botton bt1("登录");
	Botton bt2("注册");
	Frame frame("FRAME1");
	Lable labTmp("用户名");
	TextBox textBox("文本框");
	Lable labPw("密码");
	PasswordBox pwBox("密码框");
	CheckBox checkBox("复选框");
	TextBox remindUser("记住用户名");
	LinkLable link("忘记密码");
	win.addEle(&pic);
	win.addEle(&bt1);
	win.addEle(&bt2);
	win.addEle(&frame);
	frame.addEle(&labTmp);
	frame.addEle(&textBox);
	frame.addEle(&labPw);
	frame.addEle(&pwBox);
	frame.addEle(&checkBox);
	frame.addEle(&remindUser);
	frame.addEle(&link);
	win.Print();
}

#include "component.h"
int main(int argc, const char **argv)
{
	TestUnit::Test();
	return 0;
}

package main
import (
	"container/list"
	"fmt"
)
type component interface {
	print()
}
type ComponentSet struct {
	*list.List // 组合即继承
	name       string
}
func (self ComponentSet) print() {
	//fmt.Printf("print %s(%s)\n", self.className, self.name)
	for e := self.Front(); e != nil; e = e.Next() {
		//node拥有了list的特性
		e.Value.(component).print()
	}
}
func (self ComponentSet) addEle(ele interface{}) {
	self.PushBack(ele)
}
type WinForm struct {
	ComponentSet
}
func (self WinForm) print() {
	fmt.Printf("print WinForm(%s)\n", self.name)
	self.ComponentSet.print()
}
type Picture struct {
	ComponentSet
}
func (self Picture) print() {
	fmt.Printf("print Picture(%s)\n", self.name)
	self.ComponentSet.print()
}
type Botton struct {
	ComponentSet
}
func (self Botton) print() {
	fmt.Printf("print Botton(%s)\n", self.name)
	self.ComponentSet.print()
}
type Frame struct {
	ComponentSet
}
func (self Frame) print() {
	fmt.Printf("print Frame(%s)\n", self.name)
	self.ComponentSet.print()
}
type Lable struct {
	ComponentSet
}
func (self Lable) print() {
	fmt.Printf("print Lable(%s)\n", self.name)
	self.ComponentSet.print()
}
type TextBox struct {
	ComponentSet
}
func (self TextBox) print() {
	fmt.Printf("print TextBox(%s)\n", self.name)
	self.ComponentSet.print()
}
type PasswordBox struct {
	ComponentSet
}
func (self PasswordBox) print() {
	fmt.Printf("print PasswordBox(%s)\n", self.name)
	self.ComponentSet.print()
}
type CheckBox struct {
	ComponentSet
}
func (self CheckBox) print() {
	fmt.Printf("print CheckBox(%s)\n", self.name)
	self.ComponentSet.print()
}
type LinkLable struct {
	ComponentSet
}
func (self LinkLable) print() {
	fmt.Printf("print LinkLable(%s)\n", self.name)
	self.ComponentSet.print()
}
func TestComponent() {
	win := WinForm{ComponentSet{list.New(), "WINDOW窗口"}}
	pic := Picture{ComponentSet{list.New(), "LOGO图片"}}
	bt1 := Botton{ComponentSet{list.New(), "登录"}}
	bt2 := Botton{ComponentSet{list.New(), "注册"}}
	frame := Frame{ComponentSet{list.New(), "FRAME1"}}
	labTmp := Lable{ComponentSet{list.New(), "用户名"}}
	textBox := TextBox{ComponentSet{list.New(), "文本框"}}
	labPw := Lable{ComponentSet{list.New(), "密码"}}
	pwBox := PasswordBox{ComponentSet{list.New(), "密码框"}}
	checkBox := CheckBox{ComponentSet{list.New(), "复选框"}}
	remindUser := TextBox{ComponentSet{list.New(), "记住用户名"}}
	link := LinkLable{ComponentSet{list.New(), "忘记密码"}}
	win.addEle(pic)
	win.addEle(bt1)
	win.addEle(bt2)
	win.addEle(frame)
	frame.addEle(labTmp)
	frame.addEle(textBox)
	frame.addEle(labPw)
	frame.addEle(pwBox)
	frame.addEle(checkBox)
	frame.addEle(remindUser)
	frame.addEle(link)
	win.print()
}
func main() {
	TestComponent()
}