python:装飾モードの実装

#!/usr/bin/env python

# -*- coding: utf-8 -*-

import sys

sys.path.append("..")



import common



class Component:

    def __init__(self,data):

        self.url = data["url"]

        self.noteId = data["noteId"]

        self.userId = data["userId"]

        self.folderId = data["folderId"]

        

    def execute(self):

        pass





class NoteComponent(Component):

    def __init__(self,data,component=None):

        self.component = component

        Component.__init__(self, data)

    

    def setComponent(self,component):

        self.component = component



class HtmlCatcher(NoteComponent):

    def execute(self):

        if self.component != None:

            self.component.execute()

        print self.__class__.__name__



class ImageCatcher(NoteComponent):

    def execute(self):

        if self.component != None:

            self.component.execute()

        print self.__class__.__name__

    

class shareNoteComponet(NoteComponent):

    def execute(self):

        if self.component != None:

            self.component.execute()

        print self.__class__.__name__

    

def process(message):

    component = None

    if message['TYPE'] & common.CATCH_PAGE:

        component = HtmlCatcher(message["DATA"])

        

    if message['TYPE'] & common.CATCH_IMAGE:

        component1 = ImageCatcher(message["DATA"])

        component1.setComponent(component)

        component = component1

        

    if message['TYPE'] & common.SAVE_SHARED:

        component1 = shareNoteComponet(message["DATA"])

        component1.setComponent(component)

        component = component1

    

    component.execute()

        





if __name__ == "__main__":



    message = {

            #"TYPE":common.CATCH_PAGE,

            #"TYPE":common.CATCH_IMAGE | common.SAVE_SHARED,

            "TYPE":common.CATCH_PAGE | common.SAVE_SHARED | common.CATCH_IMAGE,

            "DATA":

                {

                    "url":"http://www.baidu.com",

                    "noteId":100,

                    "userId":100,

                    "folderId":100,

                }

    }

    

    process(message)