diff --git a/i3pystatus/alsa.py b/i3pystatus/alsa.py
index 1c37753..f53815b 100644
--- a/i3pystatus/alsa.py
+++ b/i3pystatus/alsa.py
@@ -46,6 +46,11 @@ class ALSA(IntervalModule):
     alsamixer = None
     has_mute = True
 
+    on_upscroll = "increase_volume"
+    on_downscroll = "decrease_volume"
+    on_leftclick = "switch_mute"
+    on_rightclick = on_leftclick
+
     def init(self):
         self.create_mixer()
         try:
@@ -82,18 +87,15 @@ class ALSA(IntervalModule):
             "color": self.color_muted if muted else self.color,
         }
 
-    def on_leftclick(self):
-        self.on_rightclick()
-
-    def on_rightclick(self):
+    def switch_mute(self):
         if self.has_mute:
             muted = self.alsamixer.getmute()[self.channel]
             self.alsamixer.setmute(not muted)
 
-    def on_upscroll(self):
+    def increase_volume(self, delta=None):
         vol = self.alsamixer.getvolume()[self.channel]
-        self.alsamixer.setvolume(min(100, vol + self.increment))
+        self.alsamixer.setvolume(min(100, vol + (delta if delta else self.increment)))
 
-    def on_downscroll(self):
+    def decrease_volume(self, delta=None):
         vol = self.alsamixer.getvolume()[self.channel]
-        self.alsamixer.setvolume(max(0, vol - self.increment))
+        self.alsamixer.setvolume(max(0, vol - (delta if delta else self.increment)))
diff --git a/i3pystatus/bitcoin.py b/i3pystatus/bitcoin.py
index 592ac25..d412830 100644
--- a/i3pystatus/bitcoin.py
+++ b/i3pystatus/bitcoin.py
@@ -59,6 +59,9 @@ class Bitcoin(IntervalModule):
         "price_down": "▼",
     }
 
+    on_leftclick = "handle_leftclick"
+    on_rightclick = "handle_rightclick"
+
     _price_prev = 0
 
     def _fetch_price_data(self):
@@ -122,8 +125,8 @@ class Bitcoin(IntervalModule):
             "color": color,
         }
 
-    def on_leftclick(self):
+    def handle_leftclick(self):
         user_open(self.leftclick)
 
-    def on_rightclick(self):
+    def handle_rightclick(self):
         user_open(self.rightclick)
diff --git a/i3pystatus/clock.py b/i3pystatus/clock.py
index dc03bee..ba95678 100644
--- a/i3pystatus/clock.py
+++ b/i3pystatus/clock.py
@@ -28,6 +28,8 @@ class Clock(IntervalModule):
     color = "#ffffff"
     interval = 1
     current_format_id = 0
+    on_upscroll = ["scroll_format", 1]
+    on_downscroll = ["scroll_format", -1]
 
     def init(self):
         if self.format is None:
@@ -78,8 +80,5 @@ class Clock(IntervalModule):
         if self.color != "i3Bar":
             self.output["color"] = self.color
 
-    def on_upscroll(self):
-        self.current_format_id = (self.current_format_id + 1) % len(self.format)
-
-    def on_downscroll(self):
-        self.current_format_id = (self.current_format_id - 1) % len(self.format)
+    def scroll_format(self, step=1):
+        self.current_format_id = (self.current_format_id + step) % len(self.format)
diff --git a/i3pystatus/cmus.py b/i3pystatus/cmus.py
index c3b8490..60f13ee 100644
--- a/i3pystatus/cmus.py
+++ b/i3pystatus/cmus.py
@@ -49,6 +49,11 @@ class Cmus(IntervalModule):
         "stopped": "◾",
     }
 
+    on_leftclick = "playpause"
+    on_rightclick = "next_song"
+    on_upscroll = "next_song"
+    on_downscroll = "previous_song"
+
     def _cmus_command(self, command):
         p = subprocess.Popen('cmus-remote --{command}'.format(command=command), shell=True,
                              stdout=subprocess.PIPE,
@@ -108,7 +113,7 @@ class Cmus(IntervalModule):
             "color": self.color
         }
 
-    def on_leftclick(self):
+    def playpause(self):
         status = self._query_cmus().get('status', '')
         if status == 'playing':
             self._cmus_command('pause')
@@ -117,11 +122,8 @@ class Cmus(IntervalModule):
         if status == 'stopped':
             self._cmus_command('play')
 
-    def on_rightclick(self):
+    def next_song(self):
         self._cmus_command("next")
 
-    def on_upscroll(self):
-        self._cmus_command("next")
-
-    def on_downscroll(self):
+    def previous_song(self):
         self._cmus_command("prev")
diff --git a/i3pystatus/core/modules.py b/i3pystatus/core/modules.py
index fc1e569..c9b66d9 100644
--- a/i3pystatus/core/modules.py
+++ b/i3pystatus/core/modules.py
@@ -1,12 +1,24 @@
 from i3pystatus.core.settings import SettingsBase
 from i3pystatus.core.threading import Manager
 from i3pystatus.core.util import convert_position
+from i3pystatus.core.command import run_through_shell
 
 
 class Module(SettingsBase):
     output = None
     position = 0
 
+    settings = ('on_leftclick', "Callback called on left click (string)",
+                'on_rightclick', "Callback called on right click (string)",
+                'on_upscroll', "Callback called on scrolling up (string)",
+                'on_downscroll', "Callback called on scrolling down (string)",
+                )
+
+    on_leftclick = None
+    on_rightclick = None
+    on_upscroll = None
+    on_downscroll = None
+
     def registered(self, status_handler):
         """Called when this module is registered with a status handler"""
 
@@ -23,31 +35,71 @@ class Module(SettingsBase):
         pass
 
     def on_click(self, button):
+        """
+        Maps a click event (include mousewheel events) with its associated callback.
+        It then triggers the callback depending on the nature (ie type) of
+        the callback variable:
+        1. if null callback, do nothing
+        2. if it's a python function ()
+        3. if it's the name of a method of the current module (string)
+
+        To setup the callbacks, you can set the settings 'on_leftclick',
+        'on_rightclick', 'on_upscroll', 'on_downscroll'.
+
+        For instance, you can test with:
+        ::
+
+            status.register("clock",
+                    format=[
+                        ("Format 0",'Europe/London'),
+                        ("%a %-d Format 1",'Europe/Dublin'),
+                        "%a %-d %b %X format 2",
+                        ("%a %-d %b %X format 3", 'Europe/Paris'),
+                    ],
+                    on_leftclick= ["urxvtc"] , # launch urxvtc on left click
+                    on_rightclick= ["scroll_format", 2] , # update format by steps of 2
+                    on_upscroll= [print, "hello world"] , # call python function print
+                    log_level=logging.DEBUG,
+                    )
+        """
+
+        def split_callback_and_args(cb):
+            if isinstance(cb, list):
+                return cb[0], cb[1:]
+            else:
+                return cb, []
+
+        cb = None
         if button == 1:  # Left mouse button
-            self.on_leftclick()
+            cb = self.on_leftclick
         elif button == 3:  # Right mouse button
-            self.on_rightclick()
+            cb = self.on_rightclick
         elif button == 4:  # mouse wheel up
-            self.on_upscroll()
+            cb = self.on_upscroll
         elif button == 5:  # mouse wheel down
-            self.on_downscroll()
+            cb = self.on_downscroll
+        else:
+            self.logger.info("Button '%d' not handled yet." % (button))
+            return
+
+        if not cb:
+            self.logger.info("no cb attached")
+            return
+        else:
+            cb, args = split_callback_and_args(cb)
+            self.logger.debug("cb=%s args=%s" % (cb, args))
+
+        if callable(cb):
+            return cb(self)
+        elif hasattr(self, cb):
+            return getattr(self, cb)(*args)
+        else:
+            return run_through_shell(cb, *args)
 
     def move(self, position):
         self.position = position
         return self
 
-    def on_leftclick(self):
-        pass
-
-    def on_rightclick(self):
-        pass
-
-    def on_upscroll(self):
-        pass
-
-    def on_downscroll(self):
-        pass
-
 
 class IntervalModuleMeta(type):
     """Add interval setting to `settings` attribute if it does not exist."""
diff --git a/i3pystatus/core/util.py b/i3pystatus/core/util.py
index 0f6de1a..c3b093e 100644
--- a/i3pystatus/core/util.py
+++ b/i3pystatus/core/util.py
@@ -431,7 +431,7 @@ def make_bar(percentage):
 def user_open(url_or_command):
     """Open the specified paramater in the web browser if a URL is detected,
     othewrise pass the paramater to the shell as a subprocess. This function
-    is inteded to bu used in on_leftclick()/on_rightclick() events.
+    is inteded to bu used in on_leftclick/on_rightclick callbacks.
 
     :param url_or_command: String containing URL or command
     """
diff --git a/i3pystatus/mail/__init__.py b/i3pystatus/mail/__init__.py
index 330494c..ff69b50 100644
--- a/i3pystatus/mail/__init__.py
+++ b/i3pystatus/mail/__init__.py
@@ -38,6 +38,8 @@ class Mail(IntervalModule):
     hide_if_null = True
     email_client = None
 
+    on_leftclick = "open_client"
+
     def init(self):
         for backend in self.backends:
             pass
@@ -69,11 +71,8 @@ class Mail(IntervalModule):
             "color": color,
         }
 
-    def on_leftclick(self):
+    def open_client(self):
         if self.email_client:
             retcode, _, stderr = run_through_shell(self.email_client)
             if retcode != 0 and stderr:
                 self.logger.error(stderr)
-
-    def on_rightclick(self):
-        self.run()
diff --git a/i3pystatus/modsde.py b/i3pystatus/modsde.py
index b524c7c..ff5f9b0 100644
--- a/i3pystatus/modsde.py
+++ b/i3pystatus/modsde.py
@@ -35,6 +35,8 @@ class ModsDeChecker(IntervalModule):
     cj = None
     logged_in = False
 
+    on_leftclick = "open_browser"
+
     def init(self):
         self.cj = http.cookiejar.CookieJar()
         self.opener = urllib.request.build_opener(
@@ -94,5 +96,5 @@ class ModsDeChecker(IntervalModule):
             return True
         return False
 
-    def on_leftclick(self):
+    def open_browser(self):
         webbrowser.open_new_tab("http://forum.mods.de/bb/")
diff --git a/i3pystatus/mpd.py b/i3pystatus/mpd.py
index 441c3dd..8946f19 100644
--- a/i3pystatus/mpd.py
+++ b/i3pystatus/mpd.py
@@ -50,6 +50,10 @@ class MPD(IntervalModule):
     color = "#FFFFFF"
     text_len = 25
     truncate_fields = ("title", "album", "artist")
+    on_leftclick = "switch_playpause"
+    on_rightclick = "next_song"
+    on_upscroll = on_rightclick
+    on_downscroll = "previous_song"
 
     def _mpd_command(self, sock, command):
         try:
@@ -101,26 +105,20 @@ class MPD(IntervalModule):
             "color": self.color,
         }
 
-    def on_leftclick(self):
+    def switch_playpause(self):
         try:
             self._mpd_command(self.s, "%s" %
                               ("play" if self._mpd_command(self.s, "status")["state"] in ["pause", "stop"] else "pause"))
         except Exception as e:
             pass
 
-    def on_rightclick(self):
+    def next_song(self):
         try:
             self._mpd_command(self.s, "next")
         except Exception as e:
             pass
 
-    def on_upscroll(self):
-        try:
-            self._mpd_command(self.s, "next")
-        except Exception as e:
-            pass
-
-    def on_downscroll(self):
+    def previous_song(self):
         try:
             self._mpd_command(self.s, "previous")
         except Exception as e:
diff --git a/i3pystatus/network.py b/i3pystatus/network.py
index e476b7c..a20cc38 100644
--- a/i3pystatus/network.py
+++ b/i3pystatus/network.py
@@ -105,6 +105,7 @@ class Network(IntervalModule):
     color_down = "#FF0000"
     detached_down = True
     unknown_up = False
+    on_leftclick = "nm-connection-editor"
 
     def init(self):
         if self.interface not in netifaces.interfaces() and not self.detached_down:
@@ -174,6 +175,3 @@ class Network(IntervalModule):
             "color": color,
             "instance": self.interface
         }
-
-    def on_leftclick(self):
-        subprocess.Popen(["nm-connection-editor"])
diff --git a/i3pystatus/now_playing.py b/i3pystatus/now_playing.py
index 40b1654..fbbccdf 100644
--- a/i3pystatus/now_playing.py
+++ b/i3pystatus/now_playing.py
@@ -54,6 +54,8 @@ class NowPlaying(IntervalModule):
     color = "#FFFFFF"
 
     old_player = None
+    on_leftclick = "playpause"
+    on_rightclick = "next_song"
 
     def find_player(self):
         players = [a for a in dbus.SessionBus().get_object("org.freedesktop.DBus", "/org/freedesktop/DBus").ListNames() if a.startswith("org.mpris.MediaPlayer2.")]
@@ -111,8 +113,8 @@ class NowPlaying(IntervalModule):
             "color": self.color,
         }
 
-    def on_leftclick(self):
+    def playpause(self):
         self.get_player().PlayPause()
 
-    def on_rightclick(self):
+    def next_song(self):
         self.get_player().Next()
diff --git a/i3pystatus/parcel.py b/i3pystatus/parcel.py
index ea81331..f98e818 100644
--- a/i3pystatus/parcel.py
+++ b/i3pystatus/parcel.py
@@ -153,6 +153,7 @@ class ParcelTracker(IntervalModule):
     required = ("instance",)
 
     format = "{name}:{progress}"
+    on_leftclick = "open_browser"
 
     @require(internet)
     def run(self):
@@ -166,5 +167,5 @@ class ParcelTracker(IntervalModule):
             "instance": self.name,
         }
 
-    def on_leftclick(self):
+    def open_browser(self):
         webbrowser.open_new_tab(self.instance.get_url())
diff --git a/i3pystatus/pianobar.py b/i3pystatus/pianobar.py
index 5314ee9..2f24850 100644
--- a/i3pystatus/pianobar.py
+++ b/i3pystatus/pianobar.py
@@ -27,6 +27,11 @@ class Pianobar(IntervalModule):
     required = ("format", "songfile", "ctlfile")
     color = "#FFFFFF"
 
+    on_leftclick = "playpause"
+    on_rightclick = "next_song"
+    on_upscroll = "increase_volume"
+    on_downscroll = "decrease_volume"
+
     def run(self):
         with open(self.songfile, "r") as f:
             contents = f.readlines()
@@ -39,14 +44,14 @@ class Pianobar(IntervalModule):
             "color": self.color
         }
 
-    def on_leftclick(self):
+    def playpause(self):
         open(self.ctlfile, "w").write("p")
 
-    def on_rightclick(self):
+    def next_song(self):
         open(self.ctlfile, "w").write("n")
 
-    def on_upscroll(self):
+    def increase_volume(self):
         open(self.ctlfile, "w").write(")")
 
-    def on_downscroll(self):
+    def decrease_volume(self):
         open(self.ctlfile, "w").write("(")
diff --git a/i3pystatus/pomodoro.py b/i3pystatus/pomodoro.py
index 1d4317c..3755612 100644
--- a/i3pystatus/pomodoro.py
+++ b/i3pystatus/pomodoro.py
@@ -42,6 +42,9 @@ class Pomodoro(IntervalModule):
     break_duration = 5 * 60
     long_break_duration = 15 * 60
 
+    on_rightclick = "stop"
+    on_leftclick = "start"
+
     def init(self):
         # state could be either running/break or stopped
         self.state = 'stopped'
@@ -90,12 +93,12 @@ class Pomodoro(IntervalModule):
             'color': color
         }
 
-    def on_leftclick(self):
+    def start(self):
         self.state = 'running'
         self.time = datetime.now() + timedelta(seconds=self.pomodoro_duration)
         self.breaks = 0
 
-    def on_rightclick(self):
+    def stop(self):
         self.state = 'stopped'
         self.time = None
 
diff --git a/i3pystatus/pulseaudio/__init__.py b/i3pystatus/pulseaudio/__init__.py
index 669ce72..390caa2 100644
--- a/i3pystatus/pulseaudio/__init__.py
+++ b/i3pystatus/pulseaudio/__init__.py
@@ -50,6 +50,11 @@ class PulseAudio(Module, ColorRangeModule):
     bar_type = 'vertical'
     vertical_bar_width = 2
 
+    on_rightclick = "switch_mute"
+    on_leftclick = "pavucontrol"
+    on_upscroll = "increase_volume"
+    on_downscroll = "decrease_volume"
+
     def init(self):
         """Creates context, when context is ready context_notify_cb is called"""
         # Wrap callback methods in appropriate ctypefunc instances so
@@ -155,10 +160,7 @@ class PulseAudio(Module, ColorRangeModule):
                     volume_bar=volume_bar),
             }
 
-    def on_leftclick(self):
-        subprocess.Popen(["pavucontrol"])
-
-    def on_rightclick(self):
+    def switch_mute(self):
         if self.has_amixer:
             command = "amixer -q -D pulse sset Master "
             if self.currently_muted:
@@ -167,12 +169,12 @@ class PulseAudio(Module, ColorRangeModule):
                 command += 'mute'
             subprocess.Popen(command.split())
 
-    def on_upscroll(self):
+    def increase_volume(self):
         if self.has_amixer:
             command = "amixer -q -D pulse sset Master %s%%+" % self.step
             subprocess.Popen(command.split())
 
-    def on_downscroll(self):
+    def decrease_volume(self):
         if self.has_amixer:
             command = "amixer -q -D pulse sset Master %s%%-" % self.step
             subprocess.Popen(command.split())
diff --git a/i3pystatus/pyload.py b/i3pystatus/pyload.py
index 7e58650..f960114 100644
--- a/i3pystatus/pyload.py
+++ b/i3pystatus/pyload.py
@@ -39,6 +39,7 @@ class pyLoad(IntervalModule):
     captcha_false = ""
     download_true = "Downloads enabled"
     download_false = "Downloads disabled"
+    on_leftclick = "open_webbrowser"
 
     def _rpc_call(self, method, data=None):
         if not data:
@@ -83,5 +84,5 @@ class pyLoad(IntervalModule):
             "instance": self.address,
         }
 
-    def on_leftclick(self):
+    def open_webbrowser(self):
         webbrowser.open_new_tab(self.address)
diff --git a/i3pystatus/reddit.py b/i3pystatus/reddit.py
index f875de1..b5a0f73 100644
--- a/i3pystatus/reddit.py
+++ b/i3pystatus/reddit.py
@@ -61,6 +61,9 @@ class Reddit(IntervalModule):
         "no_mail": "",
     }
 
+    on_leftclick = "open_permalink"
+    on_click = "open_link"
+
     _permalink = ""
     _url = ""
 
@@ -133,8 +136,8 @@ class Reddit(IntervalModule):
             "color": color,
         }
 
-    def on_leftclick(self):
+    def open_permalink(self):
         user_open(self._permalink)
 
-    def on_rightclick(self):
+    def open_link(self):
         user_open(self._url)
diff --git a/i3pystatus/spotify.py b/i3pystatus/spotify.py
index 0d7d760..8e26435 100644
--- a/i3pystatus/spotify.py
+++ b/i3pystatus/spotify.py
@@ -23,6 +23,9 @@ class Spotify(Module):
         ("color", "color of the output"),
     )
 
+    on_leftclick = "switch_playpause"
+    on_rightclick = "next_song"
+
     def main_loop(self):
         """ Mainloop blocks so we thread it."""
         self.player = Playerctl.Player()
@@ -62,8 +65,8 @@ class Spotify(Module):
             "color": self.color
         }
 
-    def on_leftclick(self):
+    def switch_playpause(self):
         self.player.play_pause()
 
-    def on_rightclick(self):
+    def next_song(self):
         self.player.next()
diff --git a/i3pystatus/text.py b/i3pystatus/text.py
index 214337f..44b964b 100644
--- a/i3pystatus/text.py
+++ b/i3pystatus/text.py
@@ -1,5 +1,3 @@
-import subprocess
-
 from i3pystatus import Module
 
 
@@ -11,14 +9,10 @@ class Text(Module):
     settings = (
         "text",
         ("color", "HTML color code #RRGGBB"),
-        ("cmd_leftclick", "Shell command to execute on left click"),
-        ("cmd_rightclick", "Shell command to execute on right click"),
     )
     required = ("text",)
 
     color = None
-    cmd_leftclick = "test"
-    cmd_rightclick = "test"
 
     def init(self):
         self.output = {
@@ -26,9 +20,3 @@ class Text(Module):
         }
         if self.color:
             self.output["color"] = self.color
-
-    def on_leftclick(self):
-        subprocess.call(self.cmd_leftclick, shell=True)
-
-    def on_rightclick(self):
-        subprocess.call(self.cmd_rightclick, shell=True)
diff --git a/tests/test_callbacks.py b/tests/test_callbacks.py
new file mode 100644
index 0000000..5b2fbd0
--- /dev/null
+++ b/tests/test_callbacks.py
@@ -0,0 +1,68 @@
+import unittest
+
+
+from i3pystatus.core.modules import Module
+
+
+class CallbacksMetaTest(unittest.TestCase):
+
+    valid_msg_count = "hello world"
+    notmuch_config = "notmuch-config"
+
+    @staticmethod
+    def send_clicks(module):
+        # simulate click events for buttons 1 to 10
+        for button in range(1, 10):
+            module.on_click(button)
+
+    class NoDefaultCounter(Module):
+
+        counter = 0
+
+        def update_counter(self, step=1):
+            self.counter = self.counter + step
+
+    class WithDefaultsCounter(NoDefaultCounter):
+        on_leftclick = "update_counter"
+        on_rightclick = ["update_counter", 2]
+        on_upscroll = ["callable_callback", "i3 is", "awesome"]
+        on_downscroll = ["update_counter", -1]
+
+    def test_count_is_correct(self):
+        """Checks module works in the intended way, ie increase correctly
+        a counter"""
+        counter = self.NoDefaultCounter()
+        self.assertEqual(counter.counter, 0)
+        counter.update_counter(1)
+        self.assertEqual(counter.counter, 1)
+        counter.update_counter(2)
+        self.assertEqual(counter.counter, 3)
+        counter.update_counter(-2)
+        self.assertEqual(counter.counter, 1)
+
+        CallbacksMetaTest.send_clicks(counter)
+
+        # retcode, out, err = run_through_shell("notmuch --config=%s new" % (self.notmuch_config), enable_shell=True)
+
+        # self.assertEqual(out.strip(), self.valid_output)
+    def test_callback_set_post_instanciation(self):
+
+        counter = self.NoDefaultCounter()
+
+        # set callbacks
+        counter.on_leftclick = "update_counter"
+        counter.on_rightclick = ["update_counter", 2]
+        counter.on_upscroll = [print, "i3 is", "awesome"]
+        counter.on_downscroll = ["update_counter", -1]
+
+        self.assertEqual(counter.counter, 0)
+        counter.on_click(1)  # left_click
+        self.assertEqual(counter.counter, 1)
+        counter.on_click(2)  # middle button
+        self.assertEqual(counter.counter, 1)
+        counter.on_click(3)  # right click
+        self.assertEqual(counter.counter, 3)
+        counter.on_click(4)  # upscroll
+        self.assertEqual(counter.counter, 3)
+        counter.on_click(5)  # downscroll
+        self.assertEqual(counter.counter, 2)