From f0b18e08ec826110b01eb86968c07ca838fb315a Mon Sep 17 00:00:00 2001 From: msincenselee Date: Thu, 27 Apr 2017 12:02:58 +0800 Subject: [PATCH] =?UTF-8?q?=E5=90=88=E5=B9=B61.6.1=E7=89=88=E6=9C=AC?= =?UTF-8?q?=E7=9A=84=20EventEngine?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- vn.trader/eventEngine.py | 125 +++++++++++++++++++++++++-------------- 1 file changed, 80 insertions(+), 45 deletions(-) diff --git a/vn.trader/eventEngine.py b/vn.trader/eventEngine.py index 90c30f02..b58aacc0 100644 --- a/vn.trader/eventEngine.py +++ b/vn.trader/eventEngine.py @@ -4,6 +4,7 @@ from Queue import Queue, Empty from threading import Thread from time import sleep +from collections import defaultdict # 第三方模块 from PyQt4.QtCore import QTimer @@ -68,7 +69,10 @@ class EventEngine(object): # 这里的__handlers是一个字典,用来保存对应的事件调用关系 # 其中每个键对应的值是一个列表,列表中保存了对该事件进行监听的函数功能 - self.__handlers = {} + self.__handlers = defaultdict(list) + + # __generalHandlers是一个列表,用来保存通用回调函数(所有事件均调用) + self.__generalHandlers = [] #---------------------------------------------------------------------- def __run(self): @@ -92,6 +96,10 @@ class EventEngine(object): #for handler in self.__handlers[event.type_]: #handler(event) + # 调用通用处理函数进行处理 + if self.__generalHandlers: + [handler(event) for handler in self.__generalHandlers] + #---------------------------------------------------------------------- def __onTimer(self): """向事件队列中存入计时器事件""" @@ -102,8 +110,11 @@ class EventEngine(object): self.put(event) #---------------------------------------------------------------------- - def start(self): - """引擎启动""" + def start(self, timer=True): + """ + 引擎启动 + timer:是否要启动计时器 + """ # 将引擎设为启动 self.__active = True @@ -111,7 +122,8 @@ class EventEngine(object): self.__thread.start() # 启动计时器,计时器事件间隔默认设定为1秒 - self.__timer.start(1000) + if timer: + self.__timer.start(1000) #---------------------------------------------------------------------- def stop(self): @@ -128,12 +140,8 @@ class EventEngine(object): #---------------------------------------------------------------------- def register(self, type_, handler): """注册事件处理函数监听""" - # 尝试获取该事件类型对应的处理函数列表,若无则创建 - try: - handlerList = self.__handlers[type_] - except KeyError: - handlerList = [] - self.__handlers[type_] = handlerList + # 尝试获取该事件类型对应的处理函数列表,若无defaultDict会自动创建新的list + handlerList = self.__handlers[type_] # 若要注册的处理器不在该事件的处理器列表中,则注册该事件 if handler not in handlerList: @@ -143,24 +151,34 @@ class EventEngine(object): def unregister(self, type_, handler): """注销事件处理函数监听""" # 尝试获取该事件类型对应的处理函数列表,若无则忽略该次注销请求 - try: - handlerList = self.__handlers[type_] - - # 如果该函数存在于列表中,则移除 - if handler in handlerList: - handlerList.remove(handler) + handlerList = self.__handlers[type_] - # 如果函数列表为空,则从引擎中移除该事件类型 - if not handlerList: - del self.__handlers[type_] - except KeyError: - pass + # 如果该函数存在于列表中,则移除 + if handler in handlerList: + handlerList.remove(handler) + + # 如果函数列表为空,则从引擎中移除该事件类型 + if not handlerList: + del self.__handlers[type_] #---------------------------------------------------------------------- def put(self, event): """向事件队列中存入事件""" self.__queue.put(event) + #---------------------------------------------------------------------- + def registerGeneralHandler(self, handler): + """注册通用事件处理函数监听""" + if handler not in self.__generalHandlers: + self.__generalHandlers.append(handler) + + #---------------------------------------------------------------------- + def unregisterGeneralHandler(self, handler): + """注销通用事件处理函数监听""" + if handler in self.__generalHandlers: + self.__generalHandlers.remove(handler) + + ######################################################################## class EventEngine2(object): @@ -187,7 +205,10 @@ class EventEngine2(object): # 这里的__handlers是一个字典,用来保存对应的事件调用关系 # 其中每个键对应的值是一个列表,列表中保存了对该事件进行监听的函数功能 - self.__handlers = {} + self.__handlers = defaultdict(list) + + # __generalHandlers是一个列表,用来保存通用回调函数(所有事件均调用) + self.__generalHandlers = [] #---------------------------------------------------------------------- def __run(self): @@ -211,6 +232,10 @@ class EventEngine2(object): #for handler in self.__handlers[event.type_]: #handler(event) + # 调用通用处理函数进行处理 + if self.__generalHandlers: + [handler(event) for handler in self.__generalHandlers] + #---------------------------------------------------------------------- def __runTimer(self): """运行在计时器线程中的循环函数""" @@ -225,8 +250,11 @@ class EventEngine2(object): sleep(self.__timerSleep) #---------------------------------------------------------------------- - def start(self): - """引擎启动""" + def start(self, timer=True): + """ + 引擎启动 + timer:是否要启动计时器 + """ # 将引擎设为启动 self.__active = True @@ -234,8 +262,9 @@ class EventEngine2(object): self.__thread.start() # 启动计时器,计时器事件间隔默认设定为1秒 - self.__timerActive = True - self.__timer.start() + if timer: + self.__timerActive = True + self.__timer.start() #---------------------------------------------------------------------- def stop(self): @@ -253,12 +282,8 @@ class EventEngine2(object): #---------------------------------------------------------------------- def register(self, type_, handler): """注册事件处理函数监听""" - # 尝试获取该事件类型对应的处理函数列表,若无则创建 - try: - handlerList = self.__handlers[type_] - except KeyError: - handlerList = [] - self.__handlers[type_] = handlerList + # 尝试获取该事件类型对应的处理函数列表,若无defaultDict会自动创建新的list + handlerList = self.__handlers[type_] # 若要注册的处理器不在该事件的处理器列表中,则注册该事件 if handler not in handlerList: @@ -268,24 +293,33 @@ class EventEngine2(object): def unregister(self, type_, handler): """注销事件处理函数监听""" # 尝试获取该事件类型对应的处理函数列表,若无则忽略该次注销请求 - try: - handlerList = self.__handlers[type_] - - # 如果该函数存在于列表中,则移除 - if handler in handlerList: - handlerList.remove(handler) + handlerList = self.__handlers[type_] + + # 如果该函数存在于列表中,则移除 + if handler in handlerList: + handlerList.remove(handler) + + # 如果函数列表为空,则从引擎中移除该事件类型 + if not handlerList: + del self.__handlers[type_] - # 如果函数列表为空,则从引擎中移除该事件类型 - if not handlerList: - del self.__handlers[type_] - except KeyError: - pass - #---------------------------------------------------------------------- def put(self, event): """向事件队列中存入事件""" self.__queue.put(event) + #---------------------------------------------------------------------- + def registerGeneralHandler(self, handler): + """注册通用事件处理函数监听""" + if handler not in self.__generalHandlers: + self.__generalHandlers.append(handler) + + #---------------------------------------------------------------------- + def unregisterGeneralHandler(self, handler): + """注销通用事件处理函数监听""" + if handler in self.__generalHandlers: + self.__generalHandlers.remove(handler) + ######################################################################## class Event: @@ -311,7 +345,8 @@ def test(): app = QCoreApplication(sys.argv) ee = EventEngine2() - ee.register(EVENT_TIMER, simpletest) + #ee.register(EVENT_TIMER, simpletest) + ee.registerGeneralHandler(simpletest) ee.start() app.exec_()