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65 lines
1.7 KiB
Python
65 lines
1.7 KiB
Python
import pytest
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from textual.app import App
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from textual.containers import Grid
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from textual.screen import Screen
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from textual.widgets import Label
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updates = 0
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class _Label(Label):
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"""Label widget that keeps track of its own updates."""
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def refresh(self, *args, **kwargs):
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global updates
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updates += 1
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return super().refresh(*args, **kwargs)
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@pytest.mark.parametrize(
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"style, value",
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[
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("grid_size_rows", 2),
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("grid_size_columns", 2),
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("grid_gutter_vertical", 2),
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("grid_gutter_horizontal", 1),
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("grid_rows", "1fr 3fr"),
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("grid_columns", "1fr 3fr"),
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("overflow_x", "scroll"),
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("overflow_y", "scroll"),
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("scrollbar_gutter", "stable"),
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("align_horizontal", "right"),
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("align_vertical", "bottom"),
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("align", ("right", "bottom")),
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],
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)
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def test_programmatic_style_change_refreshes_children_layout(style: str, value):
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"""Regression test for #1607 https://github.com/Textualize/textual/issues/1607
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Some programmatic style changes to a widget were not updating the layout of the
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children widgets, which seemed to be happening when the style change did not affect
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the size of the widget but did affect the layout of the children.
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"""
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global updates
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app = App()
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app.DEFAULT_CSS = "Grid { grid-size: 1 1; }"
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app._set_active()
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app.push_screen(Screen())
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grid = Grid(
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_Label("one"),
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_Label("two"),
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_Label("three"),
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_Label("four"),
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)
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app.screen._add_children(grid)
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update_count = updates
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setattr(grid.styles, style, value)
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print(updates, update_count)
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assert updates > update_count
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