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LibWeb: Limit HTMLSelectElement.size to allowed values

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This change ensures that the correct default value of 0 is used and
that values greater than 2147483647 will fall back to the default value.

It also splits the display size concept into a separate method, as
this isn't supposed to be used when getting the IDL property.
This commit is contained in:
Tim Ledbetter
2024-11-29 11:19:31 +00:00
committed by Andreas Kling
parent 6bfc35b6a9
commit 6218f1a609
5 changed files with 41 additions and 4 deletions
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18
Libraries/LibWeb/HTML/HTMLSelectElement.cpp
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@@ -77,7 +77,7 @@ void HTMLSelectElement::adjust_computed_style(CSS::StyleProperties& style)
}
// https://html.spec.whatwg.org/multipage/form-elements.html#concept-select-size
WebIDL::UnsignedLong HTMLSelectElement::size() const
u32 HTMLSelectElement::display_size() const
{
// The size IDL attribute must reflect the respective content attributes of the same name. The size IDL attribute has a default value of 0.
if (auto size_string = get_attribute(HTML::AttributeNames::size); size_string.has_value()) {
@@ -94,8 +94,22 @@ WebIDL::UnsignedLong HTMLSelectElement::size() const
return 1;
}
// https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-size
WebIDL::UnsignedLong HTMLSelectElement::size() const
{
// The multiple, required, and size IDL attributes must reflect the respective content attributes of the same name. The size IDL attribute has a default value of 0.
if (auto size_string = get_attribute(HTML::AttributeNames::size); size_string.has_value()) {
if (auto size = parse_non_negative_integer(*size_string); size.has_value() && *size <= 2147483647)
return *size;
}
return 0;
}
WebIDL::ExceptionOr<void> HTMLSelectElement::set_size(WebIDL::UnsignedLong size)
{
if (size > 2147483647)
size = 0;
return set_attribute(HTML::AttributeNames::size, String::number(size));
}
@@ -574,7 +588,7 @@ void HTMLSelectElement::update_selectedness()
return;
// If element's multiple attribute is absent, and element's display size is 1,
if (size() == 1) {
if (display_size() == 1) {
bool has_selected_elements = false;
for (auto const& option_element : list_of_options()) {
if (option_element->selected()) {