mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 11:12:45 +00:00
118 lines
4.7 KiB
C++
118 lines
4.7 KiB
C++
/*
|
|
* Copyright (c) 2020, the SerenityOS developers.
|
|
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibWeb/Bindings/Intrinsics.h>
|
|
#include <LibWeb/CSS/Parser/Parser.h>
|
|
#include <LibWeb/CSS/Parser/ParsingContext.h>
|
|
#include <LibWeb/CSS/PropertyID.h>
|
|
#include <LibWeb/CSS/StyleValues/ColorStyleValue.h>
|
|
#include <LibWeb/DOM/Document.h>
|
|
#include <LibWeb/HTML/HTMLMetaElement.h>
|
|
#include <LibWeb/Infra/CharacterTypes.h>
|
|
#include <LibWeb/Page/Page.h>
|
|
|
|
namespace Web::HTML {
|
|
|
|
JS_DEFINE_ALLOCATOR(HTMLMetaElement);
|
|
|
|
HTMLMetaElement::HTMLMetaElement(DOM::Document& document, DOM::QualifiedName qualified_name)
|
|
: HTMLElement(document, move(qualified_name))
|
|
{
|
|
}
|
|
|
|
HTMLMetaElement::~HTMLMetaElement() = default;
|
|
|
|
void HTMLMetaElement::initialize(JS::Realm& realm)
|
|
{
|
|
Base::initialize(realm);
|
|
set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLMetaElementPrototype>(realm, "HTMLMetaElement"_fly_string));
|
|
}
|
|
|
|
Optional<HTMLMetaElement::HttpEquivAttributeState> HTMLMetaElement::http_equiv_state() const
|
|
{
|
|
auto value = deprecated_attribute(HTML::AttributeNames::http_equiv);
|
|
|
|
#define __ENUMERATE_HTML_META_HTTP_EQUIV_ATTRIBUTE(keyword, state) \
|
|
if (value.equals_ignoring_ascii_case(#keyword##sv)) \
|
|
return HTMLMetaElement::HttpEquivAttributeState::state;
|
|
ENUMERATE_HTML_META_HTTP_EQUIV_ATTRIBUTES
|
|
#undef __ENUMERATE_HTML_META_HTTP_EQUIV_ATTRIBUTE
|
|
|
|
return OptionalNone {};
|
|
}
|
|
|
|
void HTMLMetaElement::inserted()
|
|
{
|
|
Base::inserted();
|
|
|
|
// https://html.spec.whatwg.org/multipage/semantics.html#meta-theme-color
|
|
// 1. To obtain a page's theme color, user agents must run the following steps:
|
|
// * The element is in a document tree
|
|
// * The element has a name attribute, whose value is an ASCII case-insensitive match for theme-color
|
|
// * The element has a content attribute
|
|
auto name = attribute(AttributeNames::name);
|
|
auto content = attribute(AttributeNames::content);
|
|
if (name.has_value() && name->bytes_as_string_view().equals_ignoring_ascii_case("theme-color"sv) && content.has_value()) {
|
|
auto* page = document().page();
|
|
if (!page)
|
|
return;
|
|
auto context = CSS::Parser::ParsingContext { document() };
|
|
|
|
// 2. For each element in candidate elements:
|
|
|
|
// 1. If element has a media attribute and the value of element's media attribute does not match the environment, then continue.
|
|
auto media = attribute(AttributeNames::media);
|
|
if (media.has_value()) {
|
|
auto query = parse_media_query(context, media.value());
|
|
if (!query->evaluate(document().window()))
|
|
return;
|
|
}
|
|
|
|
// 2. Let value be the result of stripping leading and trailing ASCII whitespace from the value of element's content attribute.
|
|
auto value = content->bytes_as_string_view().trim(Infra::ASCII_WHITESPACE);
|
|
|
|
// 3. Let color be the result of parsing value.
|
|
auto css_value = parse_css_value(context, value, CSS::PropertyID::Color);
|
|
if (css_value.is_null() || !css_value->is_color())
|
|
return;
|
|
auto color = css_value->as_color().color();
|
|
|
|
// 4. If color is not failure, then return color.
|
|
page->client().page_did_change_theme_color(color);
|
|
return;
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/semantics.html#pragma-directives
|
|
// When a meta element is inserted into the document, if its http-equiv attribute is present and represents one of
|
|
// the above states, then the user agent must run the algorithm appropriate for that state, as described in the
|
|
// following list:
|
|
auto http_equiv = http_equiv_state();
|
|
if (http_equiv.has_value()) {
|
|
switch (http_equiv.value()) {
|
|
case HttpEquivAttributeState::Refresh: {
|
|
// https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv-refresh
|
|
// 1. If the meta element has no content attribute, or if that attribute's value is the empty string, then return.
|
|
// 2. Let input be the value of the element's content attribute.
|
|
if (!has_attribute(AttributeNames::content))
|
|
break;
|
|
|
|
auto input = deprecated_attribute(AttributeNames::content);
|
|
if (input.is_empty())
|
|
break;
|
|
|
|
// 3. Run the shared declarative refresh steps with the meta element's node document, input, and the meta element.
|
|
document().shared_declarative_refresh_steps(input, this);
|
|
break;
|
|
}
|
|
default:
|
|
dbgln("FIXME: Implement '{}' http-equiv state", deprecated_attribute(AttributeNames::http_equiv));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|