[core/input] add default workspace wrap bindings (mouse wheel up/down)

bumblebee-status

@@ -83,6 +83,9 @@ def main():
     output = core.output.i3(theme, config)
     modules = []
 
+    core.input.register(None, core.input.WHEEL_UP, 'i3-msg workspace prev_on_output')
+    core.input.register(None, core.input.WHEEL_DOWN, 'i3-msg workspace next_on_output')
+
     input_thread = threading.Thread(target=handle_input, args=(output,))
     input_thread.daemon = True
     input_thread.start()

core/event.py

@@ -12,10 +12,14 @@ def clear():
     __callbacks.clear()
 
 def trigger(event, *args, **kwargs):
-    for callback in __callbacks.get(event, []):
+    cb = __callbacks.get(event, [])
+    if len(cb) == 0: return False
+
+    for callback in cb:
         if len(args) + len(kwargs) == 0:
             callback()
         else:
             callback(*args, **kwargs)
+    return True
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

core/input.py

@@ -34,7 +34,7 @@ def __execute(cmd):
         logging.error('failed to invoke callback: {}'.format(e))
 
 def register(obj, button=None, cmd=None):
-    event_id = __event_id(obj.id, button)
+    event_id = __event_id(obj.id if obj is not None else '', button)
     logging.debug('registering callback {}'.format(event_id))
     if callable(cmd):
         core.event.register(event_id, cmd)
@@ -43,8 +43,13 @@ def register(obj, button=None, cmd=None):
 
 def trigger(event):
     if not 'button' in event: return
+
+    triggered = False
     for field in ['instance', 'name']:
         if not field in event: continue
-        core.event.trigger(__event_id(event[field], event['button']), event)
+        if core.event.trigger(__event_id(event[field], event['button']), event):
+            triggered = True
+    if not triggered:
+        core.event.trigger(__event_id('', event['button']), event)
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

doc/NOTES.md

@@ -12,7 +12,6 @@
 
 ## Backwards-compatibility
 - alignment parameter
-- default wheel handlers
 
 ## Improvements
 - API documentation
@@ -22,5 +21,4 @@
 - themes: use colors to improve theme readability
 - convert some stuff to simple attributes to reduce LOCs
 - theme.exclude (battery)
-- configuration files
 - use add_widget() instead of core.widget.Widget()