问题描述
嗨,我正在尝试使用 wxPython 和 PyPubsub 编写一个简单的 MVC 应用程序。在我的视图文件中,我使用带有一个字段的 simle 窗口向控制器发送消息,在此字段中我输入了新用户的名称,当我点击“创建”按钮时,它应该发送带有名称的消息,但控制器没有收到此消息.我做错了什么?
这是我的视图文件的一部分:
class AddNewOperator(wx.Frame):
def __init__(self,parent,id):
wx.Frame.__init__(self,id,'Add new record',size=(250,150))
wx.Frame.CenterOnScreen(self)
#self.controller = controller
self.InitUI()
self.Centre(
def InitUI(self):
panel = wx.Panel(self)
vBox = wx.BoxSizer(wx.VERTICAL)
hBox1 = wx.BoxSizer(wx.HORIZONTAL)
st1 = wx.StaticText(panel,label='New user name')
hBox1.Add(st1,flag=wx.RIGHT,border=8)
self.tc = wx.TextCtrl(panel)
hBox1.Add(self.tc,proportion=1)
vBox.Add(hBox1,flag=wx.EXPAND|wx.LEFT|wx.RIGHT|wx.TOP,border=10)
vBox.Add(-1,10)
hBox2 = wx.BoxSizer(wx.HORIZONTAL)
btn1 = wx.Button(panel,label='Create',size=(70,30))
hBox2.Add(btn1)
btn2 = wx.Button(panel,label='Cancel',30))
hBox2.Add(btn2,flag=wx.LEFT|wx.BottOM,border=5)
vBox.Add(hBox2,flag=wx.ALIGN_CENTER|wx.RIGHT,border=10)
panel.SetSizer(vBox)
self.Bind(wx.EVT_BUTTON,self.OnCreate,btn1,id=ID_ADD_NEW_USER)
self.Bind(wx.EVT_BUTTON,self.OnDestroyAddNewUser,btn2,id=ID_DESTROY_WINDOW)
def OnCreate(self,e):
name = self.tc.GetValue()
pub.sendMessage('send name',message=name,listener='send name')
print(name)
def OnDestroyAddNewUser(self,e):
self.Destroy()
if __name__ == '__main__':
MainWindow.main()
这是我的控制器:
from View import MainWindow,AddNewOperator
from Model import Model
from pubsub import pub
from pubsub.utils.notification import useNotifyByWriteFile
import sys
useNotifyByWriteFile(sys.stdout)
class ApplicationController:
def __init__(self):
self.main_window_view = MainWindow(self)
#self.add_new_user_view = AddNewOperator(self)
self.model = Model()
pub.subscribe(self.on_button_add_new_user_click,topicName='send name')
def on_button_add_new_user_click(self,message):
if message is not None:
self.model.add_new_operator(message)
else:
print('Somthing goes wrong')
def main(self):
self.main_window_view.main()
if __name__ == '__main__':
MainWindow.main()
sys.stdout = sys.__stdout__
解决方法
虽然不是确定的答案,但作为通用调试器,它可能会有所帮助。
pubsub
有一个名为 pub.ALL_TOPICS
的特殊主题。订阅此主题的侦听器将收到每个主题的所有消息。
>>> from pubsub import pub
>>> def snoop(topicObj=pub.AUTO_TOPIC,**mesgData):
... print ('topic "%s": %s' % (topicObj.getName(),mesgData))
...
>>>
>>> pub.subscribe(snoop,pub.ALL_TOPICS)
(<pubsub.core.listener.Listener object at 0x7f5cd7804550>,True)
>>>
>>> pub.sendMessage('a random message',message="Rolf woz here",listener='send name')
topic "a random message": {'message': 'Rolf woz here','listener': 'send name'}
>>>
>>> pub.sendMessage('another random message',message="Rolf didn't get this far",listener='any listener')
topic "another random message": {'message': "Rolf didn't get this far",'listener': 'any listener'}
>>>