学步园

组合模式：针对“部分-整体”的层次结构，使得用户对单个对象和组合对象的使用具有一致性。

#encoding=utf-8
#
#by panda
#组合模式


def printInfo(info):
    print unicode(info, 'utf-8').encode('gbk')

#Component：公司抽象类
class Company:
    name = ''
    def __init__(self, name):
        self.name = name
        
    def Add(self, company):
        pass 
    
    def Remove(self, company):
        pass 
    
    def Display(self, depth):
        pass 

    def LineOfDuty(self): #履行职责
        pass 
    
#Composite：公司类
class ConcreteCompany(Company):
    childrenCompany = None
    
    def __init__(self, name):
        Company.__init__(self,name)
        self.childrenCompany = []
        
    def Add(self, company):
        self.childrenCompany.append(company) 
    
    def Remove(self, company):
        self.childrenCompany.remove(company) 
    
    def Display(self, depth):
        printInfo('-'*depth + self.name)
        
        for component in self.childrenCompany:
            component.Display(depth+2)
        

    def LineOfDuty(self): #履行职责
        for component in self.childrenCompany:
            component.LineOfDuty()
        
#Leaf：具体职能部门
class HRDepartment(Company):   
    def __init__(self, name):
         Company.__init__(self,name)
     
    def Display(self, depth):
        printInfo('-'*depth + self.name)
    
    def LineOfDuty(self): #履行职责
        printInfo('%s\t员工招聘培训管理' % self.name)
 
#Leaf：具体职能部门
class FinanceDepartment(Company):    
    def __init__(self, name):
        Company.__init__(self,name)
        
    def Display(self, depth):
        printInfo('-'*depth + self.name)
    
    def LineOfDuty(self): #履行职责
        printInfo('%s\t公司财务收支管理' % self.name)

def clientUI():    
    root = ConcreteCompany('北京总公司')
    root.Add(HRDepartment('总公司人力资源部'))
    root.Add(FinanceDepartment('总公司财务部'))
    
    comp = ConcreteCompany('华东分公司')
    comp.Add(HRDepartment('华东分公司人力资源部'))
    comp.Add(FinanceDepartment('华东分公司财务部'))
    root.Add(comp)
    
    comp1 = ConcreteCompany('南京办事处')
    comp1.Add(HRDepartment('南京办事处人力资源部'))
    comp1.Add(FinanceDepartment('南京办事处财务部'))
    comp.Add(comp1)
    
    comp2 = ConcreteCompany('杭州办事处')
    comp2.Add(HRDepartment('杭州办事处人力资源部'))
    comp2.Add(FinanceDepartment('杭州办事处财务部'))
    comp.Add(comp2)    
    
    printInfo('-------公司结构图-------')
    root.Display(1)
    
    printInfo('\n-------职责-------')
    root.LineOfDuty()
    return

if __name__ == '__main__':
    clientUI();

类图：