Navigation works!

ui/task_list.py

@@ -0,0 +1,63 @@
+import urwid
+
+from ui.constants import keys
+
+class TaskList(object):
+    def __init__(self, tasks, header, on_task_click):
+        self.callback = on_task_click
+        self.grid = urwid.Frame(
+            urwid.ListBox(
+                urwid.SimpleFocusListWalker(
+                    [TaskRow(t, self.on_task_clicked) for t in tasks]
+                )
+            ),
+            header=urwid.Text(header),
+            focus_part='body'
+        )
+
+    def on_task_clicked(self, id):
+        self.callback(id)
+
+    def component(self):
+        return self.grid
+
+class MyTasks(object):
+    def __init__(self, tasks, on_task_click):
+        all_tasks = [t for t in tasks]
+
+        today = [t for t in all_tasks if t.atm_section() == 'today']
+        upcoming = [t for t in all_tasks if t.atm_section() == 'upcoming']
+        later = [t for t in all_tasks if t.atm_section() == 'later']
+
+        self.today_grid = TaskList(today,
+                                   ('atm_section', 'Today'),
+                                   on_task_click)
+        self.upcoming_grid = TaskList(upcoming,
+                                      ('atm_section', 'Upcoming'),
+                                      on_task_click)
+        self.later_grid = TaskList(later,
+                                   ('atm_section', 'Later'),
+                                   on_task_click)
+
+    def component(self):
+        return urwid.Frame(urwid.Pile([
+                self.today_grid.component(),
+                self.upcoming_grid.component(),
+                self.later_grid.component()
+            ]),
+            header=urwid.Text(('header', 'My Tasks')),
+            focus_part='body'
+        )
+
+class TaskRow(urwid.SelectableIcon):
+    def __init__(self, task, on_click):
+        self.on_click = on_click
+        self.task = task
+        style = 'section' if task.name()[-1] == ':' else 'task'
+        super(TaskRow, self).__init__((style, task.name()))
+
+    def keypress(self, size, key):
+        if key in keys['select']:
+            self.on_click(self.task.id())
+        else:
+            return key