Merge pull request #5471 from Textualize/fix-markup-false

fix markup false

src/textual/content.py

@@ -19,6 +19,7 @@
 from rich._wrap import divide_line
 from rich.cells import set_cell_size
 from rich.console import OverflowMethod
+from rich.errors import MissingStyle
 from rich.segment import Segment, Segments
 from rich.terminal_theme import TerminalTheme
 from rich.text import Text
@@ -744,9 +745,12 @@ def render(
 
             @lru_cache(maxsize=1024)
             def get_style(style: str, /) -> Style:
-                visual_style = Style.from_rich_style(
-                    app.console.get_style(style), app.ansi_theme
-                )
+                try:
+                    visual_style = Style.from_rich_style(
+                        app.console.get_style(style), app.ansi_theme
+                    )
+                except MissingStyle:
+                    visual_style = Style()
                 return visual_style
 
         else:

src/textual/visual.py

@@ -60,14 +60,16 @@ class VisualError(Exception):
 VisualType: TypeAlias = "RenderableType | SupportsVisual | Visual"
 
 
-def visualize(widget: Widget, obj: object) -> Visual:
+def visualize(widget: Widget, obj: object, markup: bool = True) -> Visual:
     """Get a visual instance from an object.
 
     If the object does not support the Visual protocol and is a Rich renderable, it
     will be wrapped in a [RichVisual][textual.visual.RichVisual].
 
     Args:
+        widget: The parent widget.
         obj: An object.
+        markup: Enable markup.
 
     Returns:
         A Visual instance to render the object, or `None` if there is no associated visual.
@@ -84,7 +86,7 @@ def visualize(widget: Widget, obj: object) -> Visual:
         if is_renderable(obj):
             # If it is a string, render it to Text
             if isinstance(obj, str):
-                obj = widget.render_str(obj)
+                obj = widget.render_str(obj) if markup else Text(obj)
 
             if isinstance(obj, Text) and widget.allow_select:
                 return Content.from_rich_text(

src/textual/widgets/_static.py

@@ -74,7 +74,7 @@ def __init__(
     @property
     def visual(self) -> Visual:
         if self._visual is None:
-            self._visual = visualize(self, self._content)
+            self._visual = visualize(self, self._content, markup=self.markup)
         return self._visual
 
     @property
@@ -109,5 +109,5 @@ def update(self, content: RenderableType | SupportsVisual = "") -> None:
         """
 
         self._content = content
-        self._visual = visualize(self, content)
+        self._visual = visualize(self, content, markup=self.markup)
         self.refresh(layout=True)

tests/snapshot_tests/test_snapshots.py

@@ -3311,3 +3311,22 @@ def compose(self) -> ComposeResult:
                 yield Static("\n".join(f"This is some text {n}" for n in range(100)))
 
     assert snap_compare(ScrollbarOpacityApp())
+
+
+def test_static_markup(snap_compare):
+    """Check that markup may be disabled.
+
+    You should see 3 labels.
+
+    This first label contains an invalid style, and should have tags removed.
+    The second label should have the word "markup" boldened.
+    The third label has markup disabled, and should show tags without styles.
+    """
+
+    class LabelApp(App):
+        def compose(self) -> ComposeResult:
+            yield Label("There should be no [foo]tags or style[/foo]")
+            yield Label("This allows [bold]markup[/bold]")
+            yield Label("This does not allow [bold]markup[/bold]", markup=False)
+
+    snap_compare(LabelApp())