add_style() added support for receiving HTML objects

Author: schloerke

CHANGELOG.md

@@ -26,7 +26,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Exported `is_tag_node()` and `is_tag_child()` functions that utilize `typing.TypeIs` to narrow `TagNode` and `TagChild` type variables, respectively. (#86)
 
 * Exported `consolidate_attrs(*args, **kwargs)` function. This function will combine the `TagAttrs` (supplied in `*args`) with `TagAttrValues` (supplied in `**kwargs`) into a single `TagAttrs` object. In addition, it will also return all `*args` that are not dictionary as a list of unaltered `TagChild` objects. (#86)
-* This function takes a list of `TagAttrs` and returns a single `TagAttrs` object. (#86)
+
+* The `Tag` method `.add_style(style=)` added support for `HTML` objects in addition to `str` values. (#86)
 
 ### Bug fixes
 

htmltools/_core.py

@@ -780,7 +780,7 @@ def has_class(self, class_: str) -> bool:
         else:
             return False
 
-    def add_style(self: TagT, style: str, *, prepend: bool = False) -> TagT:
+    def add_style(self: TagT, style: str | HTML, *, prepend: bool = False) -> TagT:
         """
         Add a style value(s) to the HTML style attribute.
 
@@ -804,7 +804,7 @@ def add_style(self: TagT, style: str, *, prepend: bool = False) -> TagT:
         """
 
         if isinstance(  # type: ignore[reportUnnecessaryIsInstance]
-            style, str
+            style, (str, HTML)
         ) and not style.endswith(";"):
             raise ValueError("`Tag.add_style(style=)` must end with a semicolon")