wasp: template: Implement optional application methods

wasp/apps/template.py

@@ -1,5 +1,7 @@
 # SPDX-License-Identifier: LGPL-3.0-or-later
 # Copyright (C) 2020 Daniel Thompson
+"""Template application implementing all application method calls.
+"""
 
 import wasp
 import icons
@@ -11,6 +13,7 @@ class TemplateApp():
     ICON = icons.app
 
     def __init__(self):
+        """Initialize the application."""
         pass
 
     def foreground(self):
@@ -19,19 +22,39 @@ class TemplateApp():
         wasp.system.request_event(wasp.EventMask.TOUCH |
                                   wasp.EventMask.SWIPE_UPDOWN |
                                   wasp.EventMask.BUTTON)
+        wasp.system.request_tick(1000)
+
+    def background(self):
+        """De-activate the application."""
+        pass
+
+    def sleep(self):
+        """Notify the application the device is about to sleep."""
+        return False
+
+    def wake(self):
+        """Notify the application the device is waking up."""
+        pass
 
     def press(self, button, state):
+        """Notify the application of a button-press event."""
         draw = wasp.watch.drawable
         draw.string('Button', 0, 108, width=240)
 
     def swipe(self, event):
+        """Notify the application of a touchscreen swipe event."""
         draw = wasp.watch.drawable
         if event[0] == wasp.EventType.UP:
             draw.string('Swipe up', 0, 108, width=240)
         else:
             draw.string('Swipe down', 0, 108, width=240)
 
+    def tick(self, ticks):
+        """Notify the application that its periodic tick is due."""
+        pass
+
     def touch(self, event):
+        """Notify the application of a touchscreen touch event."""
         draw = wasp.watch.drawable
         wasp.watch.drawable.string('({}, {})'.format(
                 event[1], event[2]), 0, 108, width=240)
@@ -40,4 +63,9 @@ class TemplateApp():
         """Draw the display from scratch."""
         draw = wasp.watch.drawable
         draw.fill()
-        draw.string('Template', 0, 6, width=240)
+        draw.string(self.NAME, 0, 6, width=240)
+        self._update()
+
+    def _update(self):
+        """Update the dynamic parts of the application display
+        pass