class _QueueEventEngine(object):
"""
计时器使用python线程的事件驱动引擎
"""
def __init__(self):
"""初始化事件引擎"""
# 事件队列
self._queue = Queue()
self._active = False
self._routes = {}
self._thread = Thread(target=self._run)
self._thread.daemon = True
def start(self):
"""引擎启动"""
#print self._routes
self._active = True
self._thread.start()
def stop(self):
"""停止引擎"""
self._active = False
self._timer_active = False
# 等待事件处理线程退出
#self._thread.join()
def register(self, route, handler):
"""注册事件处理函数监听,
不重复注册同样事件的同样回调。
"""
if route not in self._routes:
self._routes[route] = [handler]
return
handlers = self._routes[route]
if handler not in handlers:
handlers.append(handler)
def unregister(self, route, handler):
"""注销事件处理函数监听"""
try:
handlerList = self._routes[route]
# 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._routes[route]
except KeyError:
pass
def emit(self, event):
"""向事件队列中存入事件"""
self._queue.emit(event)
def _run(self):
"""引擎运行"""
while self._active == True:
try:
# 获取事件的阻塞时间设为1秒
event = self._queue.get(block=True, timeout=1)
self._process(event)
except Empty:
pass
def _process(self, event):
"""处理事件"""
if event.route in self._routes:
for handler in self._routes[event.route]:
try:
handler(event)
except Exception as e:
print e
class _QueueEventEngine(object):
"""
计时器使用python线程的事件驱动引擎
"""
def __init__(self):
"""初始化事件引擎"""
# 事件队列
self._queue = Queue()
self._active = False
self._routes = {}
self._thread = Thread(target=self._run)
self._thread.daemon = True
def start(self):
"""引擎启动"""
#print self._routes
self._active = True
self._thread.start()
def stop(self):
"""停止引擎"""
self._active = False
self._timer_active = False
# 等待事件处理线程退出
#self._thread.join()
def register(self, route, handler):
"""注册事件处理函数监听,
不重复注册同样事件的同样回调。
"""
if route not in self._routes:
self._routes[route] = [handler]
return
handlers = self._routes[route]
if handler not in handlers:
handlers.append(handler)
def unregister(self, route, handler):
"""注销事件处理函数监听"""
try:
handlerList = self._routes[route]
# 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._routes[route]
except KeyError:
pass
def emit(self, event):
"""向事件队列中存入事件"""
self._queue.emit(event)
def _run(self):
"""引擎运行"""
while self._active == True:
try:
# 获取事件的阻塞时间设为1秒
event = self._queue.get(block=True, timeout=1)
self._process(event)
except Empty:
pass
def _process(self, event):
"""处理事件"""
if event.route in self._routes:
for handler in self._routes[event.route]:
try:
handler(event)
except Exception as e:
print e
