[engine/input] Re-enable mouse button parameter bindings

Re-enable the possibility to define custom mouse actions by binding
commands to "<alias|module>.<left-click|right-click|...>". These
commands are then executed as shell commands.

fixes #30

tests/test_engine.py

@@ -1,10 +1,12 @@
 # pylint: disable=C0103,C0111,W0703,W0212
 
+import shlex
 import unittest
 
 from bumblebee.error import ModuleLoadError
 from bumblebee.engine import Engine
 from bumblebee.config import Config
+import bumblebee.input
 
 from tests.util import MockOutput, MockInput
 
@@ -52,4 +54,30 @@ class TestEngine(unittest.TestCase):
         except Exception as e:
             self.fail(e)
 
+    def test_custom_cmd(self):
+        testmodules = [
+            { "name": "test", "button": "test.left-click", "action": "echo" },
+            { "name": "test:alias", "button": "alias.right-click", "action": "echo2" },
+        ]
+        cmd = "-m"
+        for test in testmodules:
+            cmd += " " + test["name"]
+        cmd += " -p"
+        for test in testmodules:
+            cmd += " " + test["button"] + "=" + test["action"]
+        cfg = Config(shlex.split(cmd))
+        inp = MockInput()
+        engine = Engine(config=cfg, output=MockOutput(), inp=inp)
+
+        i = 0
+        for module in engine.modules():
+            callback = inp.get_callback(module.id)
+            self.assertTrue(callback is not None)
+            self.assertEquals(callback["command"], testmodules[i]["action"])
+            if "left" in testmodules[i]["button"]:
+                self.assertTrue(callback["button"], bumblebee.input.LEFT_MOUSE)
+            if "right" in testmodules[i]["button"]:
+                self.assertTrue(callback["button"], bumblebee.input.RIGHT_MOUSE)
+            i += 1
+
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

tests/util.py

@@ -37,14 +37,24 @@ def assertMouseEvent(mock_input, mock_output, mock_select, engine, module, butto
             assertPopen(mock_output, cmd)
 
 class MockInput(object):
+    def __init__(self):
+        self._callbacks = {}
     def start(self):
         pass
 
     def stop(self):
         pass
 
+    def get_callback(self, uid):
+        return self._callbacks.get(uid, None)
+
     def register_callback(self, obj, button, cmd):
-        pass
+        if not obj:
+            return
+        self._callbacks[obj.id] = {
+            "button": button,
+            "command": cmd,
+        }
 
 class MockEngine(object):
     def __init__(self):