waveshare: fix focusgroup handling

internal_filesystem/apps/com.micropythonos.imageview/assets/imageview.py

@@ -165,23 +165,23 @@ class ImageView(Activity):
             self.show_next_image()
 
     def unfocus(self):
-        group = lv.group_get_default()
-        if not group:
+        focusgroup = lv.group_get_default()
+        if not focusgroup:
             print("WARNING: imageview.py could not get default focus group")
             return
         print("got focus group")
         # group.focus_obj(self.play_button) would be better but appears missing?!
-        focused = group.get_focused()
+        focused = focusgroup.get_focused()
         print("got focus button")
         #focused.remove_state(lv.STATE.FOCUSED) # this doesn't seem to work to remove focus
         if focused:
             print("checking which button is focused")
             if focused == self.next_button:
                 print("next is focused")
-                group.focus_prev()
+                focusgroup.focus_prev()
             elif focused == self.prev_button:
                 print("prev is focused")
-                group.focus_next()
+                focusgroup.focus_next()
             else:
                 print("focus isn't on next or previous, leaving it...")
 

internal_filesystem/builtin/apps/com.micropythonos.launcher/assets/launcher.py

@@ -107,7 +107,8 @@ class Launcher(mpos.apps.Activity):
             app_cont.add_event_cb(lambda e, path=app_dir_fullpath: mpos.apps.start_app(path), lv.EVENT.CLICKED, None)
             app_cont.add_event_cb(lambda e, app_cont=app_cont: self.focus_app_cont(app_cont),lv.EVENT.FOCUSED,None)
             app_cont.add_event_cb(lambda e, app_cont=app_cont: self.defocus_app_cont(app_cont),lv.EVENT.DEFOCUSED,None)
-            focusgroup.add_obj(app_cont)
+            if focusgroup:
+                focusgroup.add_obj(app_cont)
         
         end = time.ticks_ms()
         print(f"Redraw icons took: {end-start}ms")

internal_filesystem/builtin/apps/com.micropythonos.settings/assets/settings.py

@@ -92,7 +92,8 @@ class SettingsActivity(Activity):
             setting_cont.add_event_cb(lambda e, s=setting: self.startSettingActivity(s), lv.EVENT.CLICKED, None)
             setting_cont.add_event_cb(lambda e, container=setting_cont: self.focus_container(container),lv.EVENT.FOCUSED,None)
             setting_cont.add_event_cb(lambda e, container=setting_cont: self.defocus_container(container),lv.EVENT.DEFOCUSED,None)
-            focusgroup.add_obj(setting_cont)
+            if focusgroup:
+                focusgroup.add_obj(setting_cont)
 
     def startSettingActivity(self, setting):
         intent = Intent(activity_class=SettingActivity)

internal_filesystem/builtin/apps/com.micropythonos.wifi/assets/wifi.py

@@ -314,13 +314,15 @@ class PasswordPage(Activity):
         self.cancel_button.add_flag(lv.obj.FLAG.HIDDEN)
         mpos.ui.anim.smooth_show(self.keyboard)
         focusgroup = lv.group_get_default()
-        focusgroup.focus_next() # move the focus to the keypad
+        if focusgroup:
+            focusgroup.focus_next() # move the focus to the keypad
 
     def hide_keyboard(self):
         self.connect_button.remove_flag(lv.obj.FLAG.HIDDEN)
         self.cancel_button.remove_flag(lv.obj.FLAG.HIDDEN)
         focusgroup = lv.group_get_default()
-        focusgroup.focus_prev() # move the focus to the close button, otherwise it goes back to the textarea, which opens the keyboard again
+        if focusgroup:
+            focusgroup.focus_prev() # move the focus to the close button, otherwise it goes back to the textarea, which opens the keyboard again
         mpos.ui.anim.smooth_hide(self.keyboard)
 
     def print_events(self, event):

internal_filesystem/lib/mpos/apps.py

@@ -335,9 +335,9 @@ class ActivityNavigator:
         activity._result_callback = result_callback  # Pass callback to activity
         start_time = utime.ticks_ms()
         # Remove objects from previous screens from the focus group:
-        group = lv.group_get_default()
-        if group: # on esp32 this may not be set
-            group.remove_all_objs() #  might be better to save and restore the group for "back" actions
+        focusgroup = lv.group_get_default()
+        if focusgroup: # on esp32 this may not be set
+            focusgroup.remove_all_objs() #  might be better to save and restore the group for "back" actions
         activity.onCreate()
         end_time = utime.ticks_diff(utime.ticks_ms(), start_time)
         print(f"apps.py _launch_activity: activity.onCreate took {end_time}ms")

internal_filesystem/lib/mpos/clipboard.py

@@ -10,9 +10,9 @@ def get():
 
 def paste_text(text): # called when CTRL-V is pressed on the keyboard
     print(f"mpos.ui.clipboard.py paste_text adding {text}")
-    group = lv.group_get_default()
-    if not group:
+    focusgroup = lv.group_get_default()
+    if not focusgroup:
         return
-    focused_obj = group.get_focused()
+    focused_obj = focusgroup.get_focused()
     if focused_obj and isinstance(focused_obj, lv.textarea):
         focused_obj.add_text(text)