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Fix NoMatches crash if you tab to the color grid and then use arrows

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This commit is contained in:
Isaiah Odhner 2023-05-22 01:49:56 -04:00
parent d88885419c
commit 2aea62bff5
1 changed files with 5 additions and 1 deletions
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6
src/textual_paint/edit_colors.py
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@ -1,6 +1,7 @@
from typing import Any, Callable
from textual import events, on
from textual.containers import Container
from textual.css.query import NoMatches
from textual.widget import Widget
from textual.widgets import Button
from textual.containers import Container
@ -76,7 +77,10 @@ class ColorGrid(Container):
def _navigate_relative(self, delta: int) -> None:
"""Navigate to a color relative to the currently focused color."""
focused = self.query_one(".selected", Button)
try:
focused = self.query_one(".selected", Button)
except NoMatches:
return
index = self._colors.index(self._color_by_button[focused])
print(delta, (index % num_colors_per_row), num_colors_per_row)
if delta == -1 and (index % num_colors_per_row) == 0: