fix #164 add MEMBER_REMOVED event and member_removed plugin python hook

python/src/deltachat/account.py

@@ -3,6 +3,7 @@
 from __future__ import print_function
 import atexit
 from contextlib import contextmanager
+import queue
 from threading import Event
 import os
 from array import array
@@ -15,7 +16,6 @@ from .message import Message
 from .contact import Contact
 from .tracker import ImexTracker
 from . import hookspec, iothreads
-from queue import Queue
 
 
 class MissingCredentials(ValueError):
@@ -49,7 +49,7 @@ class Account(object):
         hook.account_init(account=self, db_path=db_path)
 
         self._threads = iothreads.IOThreads(self)
-        self._hook_event_queue = Queue()
+        self._hook_event_queue = queue.Queue()
         self._in_use_iter_events = False
         self._shutdown_event = Event()
 
@@ -578,6 +578,16 @@ class Account(object):
         hook = hookspec.Global._get_plugin_manager().hook
         hook.account_after_shutdown(account=self, dc_context=dc_context)
 
+    def _handle_current_events(self):
+        """ handle all currently queued events and then return. """
+        while 1:
+            try:
+                event = self._hook_event_queue.get(block=False)
+            except queue.Empty:
+                break
+            else:
+                event.call_hook()
+
     def iter_events(self, timeout=None):
         """ yield hook events until shutdown.
 
@@ -614,6 +624,10 @@ class Account(object):
             chat = self.get_chat_by_id(ffi_event.data1)
             contact = self.get_contact_by_id(ffi_event.data2)
             return "member_added", dict(chat=chat, contact=contact)
+        elif name == "DC_EVENT_MEMBER_REMOVED":
+            chat = self.get_chat_by_id(ffi_event.data1)
+            contact = self.get_contact_by_id(ffi_event.data2)
+            return "member_removed", dict(chat=chat, contact=contact)
         return None, {}