always show textbox when empty

Author: FoamyGuy

adafruit_display_text/text_box.py

@@ -54,8 +54,6 @@ class TextBox(bitmap_label.Label):
     :param height: The height of the TextBox in pixels.
     :param align: How to align the text within the box,
       valid values are ``ALIGN_LEFT``, ``ALIGN_CENTER``, ``ALIGN_RIGHT``.
-    :param bool show_when_empty: Whether to show the background box
-      when there is no text. True to show when empty, False to hide.
     """
 
     ALIGN_LEFT = const(0)
@@ -70,14 +68,12 @@ def __init__(
         width: int,
         height: int,
         align=ALIGN_LEFT,
-        show_when_empty=False,
         **kwargs,
     ) -> None:
         self._bitmap = None
         self._tilegrid = None
         self._prev_label_direction = None
         self._width = width
-        self._show_when_empty = show_when_empty
 
         if height != TextBox.DYNAMIC_HEIGHT:
             self._height = height
@@ -248,25 +244,8 @@ def _reset_text(
 
         # Check for empty string
         if (not text) or (text is None):
-            if not self._show_when_empty:
-                # If empty string, just create a zero-sized bounding box and that's it.
-                self._bounding_box = (
-                    0,
-                    0,
-                    0,  # zero width with text == ""
-                    0,  # zero height with text == ""
-                )
-                # Clear out any items in the self._local_group Group, in case this is an
-                # update to the bitmap_label
-                for _ in self._local_group:
-                    self._local_group.pop(0)
-
-                # Free the bitmap and tilegrid since they are removed
-                self._bitmap = None
-                self._tilegrid = None
-            else:
-                # clear the existing bitmap and keep it
-                self._bitmap.fill(0)
+            # clear the existing bitmap and keep it
+            self._bitmap.fill(0)
 
         else:  # The text string is not empty, so create the Bitmap and TileGrid and
             # append to the self Group
@@ -411,14 +390,3 @@ def align(self, align: int) -> None:
         if align not in {TextBox.ALIGN_LEFT, TextBox.ALIGN_CENTER, TextBox.ALIGN_RIGHT}:
             raise ValueError("Align must be one of: ALIGN_LEFT, ALIGN_CENTER, ALIGN_RIGHT")
         self._align = align
-
-    @property
-    def show_when_empty(self):
-        """
-        Whether to show the background box when there is no text
-        """
-        return self._show_when_empty
-
-    @show_when_empty.setter
-    def show_when_empty(self, value: bool) -> None:
-        self._show_when_empty = value