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Close #137: fix logic for inferring window title from Tag/TagList obj…
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Original file line number | Diff line number | Diff line change |
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@@ -1,6 +1,45 @@ | ||
from htmltools import tags, Tag, TagChildArg | ||
from typing import Optional, Union | ||
import warnings | ||
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||
from htmltools import ( | ||
tags, | ||
Tag, | ||
TagList, | ||
TagChildArg, | ||
TagChild, | ||
HTMLDependency, | ||
head_content, | ||
) | ||
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from ..types import MISSING, MISSING_TYPE | ||
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def shiny_input_label(id: str, label: TagChildArg = None) -> Tag: | ||
cls = "control-label" + ("" if label else " shiny-label-null") | ||
return tags.label(label, class_=cls, id=id + "-label", for_=id) | ||
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def get_window_title( | ||
title: Optional[Union[str, Tag, TagList]], | ||
window_title: Union[str, MISSING_TYPE] = MISSING, | ||
) -> Optional[HTMLDependency]: | ||
if title is not None and isinstance(window_title, MISSING_TYPE): | ||
# Try to infer window_title from contents of title | ||
window_title = _find_child_strings(title) | ||
if not window_title: | ||
warnings.warn( | ||
"Unable to infer a `window_title` default from `title`. Consider providing a character string to `window_title`." | ||
) | ||
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if isinstance(window_title, MISSING_TYPE): | ||
return None | ||
else: | ||
return head_content(tags.title(window_title)) | ||
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def _find_child_strings(x: Union[Tag, TagList, TagChild]) -> str: | ||
if isinstance(x, Tag): | ||
x = x.children | ||
if isinstance(x, TagList): | ||
return " ".join([_find_child_strings(y) for y in x]) | ||
return x if isinstance(x, str) else "" |