keyboard_widget: auto-select next key after changing the mapping

src/main/python/keyboard_container.py

@@ -111,6 +111,8 @@ class KeyboardContainer(QWidget):
         else:
             self.set_key_matrix(keycode)
 
+        self.container.select_next()
+
     def set_key_encoder(self, keycode):
         l, i, d = self.current_layer, self.container.active_key.desc.encoder_idx,\
                             self.container.active_key.desc.encoder_dir

src/main/python/keyboard_widget.py

@@ -224,6 +224,18 @@ class KeyboardWidget(QWidget):
             self.clicked.emit()
         self.update()
 
+    def select_next(self):
+        """ Selects next key based on their order in the keymap """
+        # TODO: this almost certainly needs changes after multilayout support lands
+
+        keys_looped = self.keys + [self.keys[0]]
+        for x, key in enumerate(keys_looped):
+            if key == self.active_key:
+                self.active_key = keys_looped[x + 1]
+                self.active_mask = False
+                self.clicked.emit()
+                return
+
     def deselect(self):
         if self.active_key is not None:
             self.active_key = None