跟我学设计模式之3：单例模式的示例和普通多例的示例

import wx from NormalLogger import NormalLogger from SingletonLogger import SingletonLogger class LogApp(wx.Frame): def __init__(self, parent, title): super(LogApp, self).__init__(parent, title=title, size=(1000, 800)) self.panel = wx.Panel(self) self.normal_loggers = [] self.init_ui() def init_ui(self): sizer = wx.BoxSizer(wx.HORIZONTAL) # 左边单例模式 left_sizer = wx.BoxSizer(wx.VERTICAL) self.create_singleton_button1 = wx.Button(self.panel, label="创建单例对象1") self.create_singleton_button1.Bind(wx.EVT_BUTTON, self.on_create_singleton1) self.create_singleton_button2 = wx.Button(self.panel, label="创建单例对象2") self.create_singleton_button2.Bind(wx.EVT_BUTTON, self.on_create_singleton2) self.clear_singleton_button = wx.Button(self.panel, label="清除日志文件") self.clear_singleton_button.Bind(wx.EVT_BUTTON, self.on_clear_singleton) top_buttons_sizer = wx.BoxSizer(wx.HORIZONTAL) top_buttons_sizer.Add(self.create_singleton_button1, 0, wx.ALL, 5) top_buttons_sizer.Add(self.create_singleton_button2, 0, wx.ALL, 5) top_buttons_sizer.Add(self.clear_singleton_button, 0, wx.ALL, 5) left_sizer.Add(top_buttons_sizer, 0, wx.ALL | wx.EXPAND, 5) self.singleton_log_input = wx.TextCtrl(self.panel, style=wx.TE_MULTILINE) left_sizer.Add(self.singleton_log_input, 1, wx.ALL | wx.EXPAND, 5) self.write_singleton_button = wx.Button(self.panel, label="写日志") self.write_singleton_button.Bind(wx.EVT_BUTTON, self.on_write_singleton) left_sizer.Add(self.write_singleton_button, 0, wx.ALL, 5) self.singleton_log_output = wx.TextCtrl(self.panel, style=wx.TE_READONLY | wx.TE_MULTILINE) left_sizer.Add(self.singleton_log_output, 1, wx.ALL | wx.EXPAND, 5) self.read_singleton_button = wx.Button(self.panel, label="读日志") self.read_singleton_button.Bind(wx.EVT_BUTTON, self.on_read_singleton) left_sizer.Add(self.read_singleton_button, 0, wx.ALL, 5) sizer.Add(left_sizer, 1, wx.ALL | wx.EXPAND, 5) # 右边普通多实例模式 right_sizer = wx.BoxSizer(wx.VERTICAL) self.create_normal_button1 = wx.Button(self.panel, label="创建普通对象1") self.create_normal_button1.Bind(wx.EVT_BUTTON, self.on_create_normal1) self.create_normal_button2 = wx.Button(self.panel, label="创建普通对象2") self.create_normal_button2.Bind(wx.EVT_BUTTON, self.on_create_normal2) self.clear_normal_button = wx.Button(self.panel, label="清除日志文件") self.clear_normal_button.Bind(wx.EVT_BUTTON, self.on_clear_normal) top_buttons_sizer = wx.BoxSizer(wx.HORIZONTAL) top_buttons_sizer.Add(self.create_normal_button1, 0, wx.ALL, 5) top_buttons_sizer.Add(self.create_normal_button2, 0, wx.ALL, 5) top_buttons_sizer.Add(self.clear_normal_button, 0, wx.ALL, 5) right_sizer.Add(top_buttons_sizer, 0, wx.ALL | wx.EXPAND, 5) self.normal_log_input = wx.TextCtrl(self.panel, style=wx.TE_MULTILINE) right_sizer.Add(self.normal_log_input, 1, wx.ALL | wx.EXPAND, 5) self.write_normal_button = wx.Button(self.panel, label="写日志") self.write_normal_button.Bind(wx.EVT_BUTTON, self.on_write_normal) right_sizer.Add(self.write_normal_button, 0, wx.ALL, 5) self.normal_log_output = wx.TextCtrl(self.panel, style=wx.TE_READONLY | wx.TE_MULTILINE) right_sizer.Add(self.normal_log_output, 1, wx.ALL | wx.EXPAND, 5) self.read_normal_button = wx.Button(self.panel, label="读日志") self.read_normal_button.Bind(wx.EVT_BUTTON, self.on_read_normal) right_sizer.Add(self.read_normal_button, 0, wx.ALL, 5) sizer.Add(right_sizer, 1, wx.ALL | wx.EXPAND, 5) self.panel.SetSizer(sizer) def on_clear_singleton(self, event): SingletonLogger.clear_log() self.singleton_log_output.SetValue("") def on_create_singleton1(self, event): self.singleton_logger = SingletonLogger() wx.MessageBox("单例对象1已创建", "信息") def on_create_singleton2(self, event): self.singleton_logger = SingletonLogger() wx.MessageBox("单例对象2已创建", "信息") def on_write_singleton(self, event): message = self.singleton_log_input.GetValue() if message: self.singleton_logger.write_log(message) self.singleton_log_input.SetValue("") def on_read_singleton(self, event): log_content = self.singleton_logger.read_log() self.singleton_log_output.SetValue(log_content) def on_clear_normal(self, event): NormalLogger.clear_log() self.normal_log_output.SetValue("") def on_create_normal1(self, event): self.normal_loggers.append(NormalLogger()) wx.MessageBox("普通对象1已创建", "信息") def on_create_normal2(self, event): self.normal_loggers.append(NormalLogger()) wx.MessageBox("普通对象2已创建", "信息") def on_write_normal(self, event): message = self.normal_log_input.GetValue() if message and self.normal_loggers: self.normal_loggers[-1].write_log(message) self.normal_log_input.SetValue("") def on_read_normal(self, event): if self.normal_loggers: log_content = self.normal_loggers[-1].read_log() self.normal_log_output.SetValue(log_content) else: wx.MessageBox("没有创建任何普通对象", "警告") if __name__ == "__main__": app = wx.App(False) frame = LogApp(None, "单例模式与普通多实例模式对比示例") frame.Show() app.MainLoop()