Exposed a global context.get_bus() method to allow plugins to send events to the main bus

platypush/context/__init__.py

@@ -9,6 +9,9 @@ backends = {}
 # Map: plugin_name -> plugin_instance
 plugins = {}
 
+# Reference to the main application bus
+main_bus = None
+
 def register_backends(bus=None, global_scope=False, **kwargs):
     """ Initialize the backend objects based on the configuration and returns
         a name -> backend_instance map.
@@ -19,6 +22,10 @@ def register_backends(bus=None, global_scope=False, **kwargs):
         kwargs -- Any additional key-value parameters required to initialize the backends
         """
 
+    global main_bus
+    if bus:
+        main_bus = bus
+
     if global_scope:
         global backends
     else:
@@ -84,6 +91,10 @@ def get_plugin(plugin_name, reload=False):
     plugins[plugin_name] = plugin
     return plugin
 
+def get_bus():
+    global main_bus
+    return main_bus
+
 def register_plugin(name, plugin, **kwargs):
     """ Registers a plugin instance by name """
     global plugins

platypush/plugins/video/omxplayer.py

@@ -10,6 +10,7 @@ from bs4 import BeautifulSoup
 from dbus.exceptions import DBusException
 from omxplayer import OMXPlayer
 
+from platypush.context import get_bus
 from platypush.plugins.media import PlayerState
 from platypush.message.response import Response
 from platypush.message.event.video import VideoPlayEvent, VideoPauseEvent, \
@@ -158,17 +159,17 @@ class VideoOmxplayerPlugin(Plugin):
 
     def on_play(self):
         def _f(player):
-            self.bus.post(VideoPlayEvent(video=self.player.get_source()))
+            get_bus().post(VideoPlayEvent(video=self.player.get_source()))
         return _f
 
     def on_pause(self):
         def _f(player):
-            self.bus.post(VideoPauseEvent(video=self.player.get_source()))
+            get_bus().post(VideoPauseEvent(video=self.player.get_source()))
         return _f
 
     def on_stop(self):
         def _f(player):
-            self.bus.post(VideoStopEvent())
+            get_bus().post(VideoStopEvent())
         return _f