[modules] add taskwarrior module

bumblebee/modules/taskwarrior.py

@@ -0,0 +1,39 @@
+"""Displays the number of pending tasks in TaskWarrior.
+
+Requires the following library:
+    * taskw
+
+Parameters:
+    * taskwarrior.taskrc : path to the taskrc file (defaults to ~/.taskrc)
+"""
+
+import bumblebee.input
+import bumblebee.output
+import bumblebee.engine
+
+from taskw import TaskWarrior
+
+
+class Module(bumblebee.engine.Module):
+    """TaskWarrior module."""
+
+    def __init__(self, engine, config):
+        """Initialize taskwarrior module."""
+        super(Module, self).__init__(engine, config,
+                                     bumblebee.output.Widget(
+                                         full_text=self.output))
+        self._pending_tasks_count = "0"
+
+    def update(self, widgets):
+        """Return a string with the number of pending tasks from TaskWarrior."""
+        try:
+            taskrc = self.parameter("taskrc", "~/.taskrc")
+            w = TaskWarrior(config_filename=taskrc)
+            pending_tasks = w.filter_tasks({'status': 'pending'})
+            self._pending_tasks_count = str(len(pending_tasks))
+        except:
+            self._pending_tasks_count = 'Error'
+
+    def output(self, _):
+        """Format the task counter to ouptut in bumblebee."""
+        return "{}".format(self._pending_tasks_count)