def __init__(self, function):
self._handle = ffi.new_handle(self)
# we need a way to get this Python object from the `struct
# wl_listener*`, so we put the pointer in a container struct that
# contains both the wl_listener and a pointer to our ffi handle
self.container = ffi.new("struct wl_listener_container *")
self.container.handle = self._handle
self._ptr = ffi.addressof(self.container.destroy_listener)
self._ptr.notify = lib.notify_func
self._notify = function
self._signal = None
def remove(self):
"""Remove the listener"""
if self._ptr.link != ffi.NULL:
lib.wl_list_remove(ffi.addressof(self._ptr.link))
self.link = None
def remove(self):
"""Remove the listener"""
if self.link:
lib.wl_list_remove(ffi.addressof(self._ptr.link))
self.link = None