【架构师训练营 - 作业 -3】单例和组合

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发布于: 2020 年 06 月 24 日
1. 请在草稿纸上手写一个单例模式的实现代码，拍照提交作业。
2. 请用组合设计模式编写程序，打印输出图 1 的窗口，窗口组件的树结构如图 2 所示，打印输出示例参考图 3。
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单例模式-Python装饰器版本
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组合模式-Python版本﻿
from abc import ABCMeta, abstractmethod
class Component(metaclass=ABCMeta):
    @abstractmethod
    def draw(self):
        pass
class Container(Component, metaclass=ABCMeta):
    def __init__(self):
        super().__init__()
        self._components = []
    @abstractmethod
    def layout(self):
        pass
    def add_component(self, item):
        if item not in self._components:
            self._components.append(item)
    def remove_component(self, item):
        if item in self._components:
            self._components.remove(item)
    def draw(self):
        self.layout()
        for item in self._components:
            item.draw()
class WinForm(Container):
    def __init__(self, name, width=0, height=0):
        super().__init__()
        self._width = width
        self._height = height
        self._name = name
    def layout(self):
        print(self._name)
class Picture(Component):
    def __init__(self, url):
        super().__init__()
        self._url = url
    def draw(self):
        print(self._url)
class Button(Component):
    
    def __init__(self, name, listener=None):
        super().__init__()
        self._name = name
        self._listener = listener
    def draw(self):
        print(self._name)
class Frame(Container):
    def __init__(self, name, x=0, y=0, width=0, height=0):
        super().__init__()
        self._x = x
        self._y = y
        self._width = width
        self._height = height
        self._name = name
    def layout(self):
        print(self._name)
class Label(Component):
    def __init__(self, text):
        super().__init__()
        self._text = text
    def draw(self):
        print(self._text)
class TextBox(Component):
    def __init__(self, text):
        super().__init__()
        self._text = text
    def draw(self):
        print(self._text)
class PasswordBox(Component):
    
    def __init__(self, text):
        super().__init__()
        self._text = text
    def draw(self):
        print(self._text)
class CheckBox(Component):
    
    def __init__(self, text, is_selected=False):
        super().__init__()
        self._text = text
        self._is_selected = is_selected
    def draw(self):
        print(self._text)
class LinkLabel(Component):
    
    def __init__(self, text, link=None):
        super().__init__()
        self._text = text
        self._link = link
    def draw(self):
        print(self._text)
            
def main(*args, **kwargs):
    windows = WinForm("WINDOW窗口")
    windows.add_component(Picture(url="LOGO图片"))
    windows.add_component(Button(name="登录"))
    windows.add_component(Button(name="注册"))
    frame = Frame(name="FRAME1")
    windows.add_component(frame)
    frame.add_component(Label("用户名"))
    frame.add_component(TextBox("文本框"))
    frame.add_component(Label("密码"))
    frame.add_component(PasswordBox("密码框"))
    frame.add_component(CheckBox("复选框"))
    frame.add_component(TextBox("记住用户名"))
    frame.add_component(LinkLabel("忘记密码"))
    windows.draw()
if __name__ == '__main__':
    main()
    
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