0f6782fae6
This should allow us to add a Element::attribute which returns an Optional<String>. Eventually all callers should be ported to switch from the DeprecatedString version, but in the meantime, this should allow us to port some more IDL interfaces away from DeprecatedString.
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/HTMLMetaElement.h>
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namespace Web::HTML {
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HTMLMetaElement::HTMLMetaElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: HTMLElement(document, move(qualified_name))
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{
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}
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HTMLMetaElement::~HTMLMetaElement() = default;
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void HTMLMetaElement::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLMetaElementPrototype>(realm, "HTMLMetaElement"));
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}
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Optional<HTMLMetaElement::HttpEquivAttributeState> HTMLMetaElement::http_equiv_state() const
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{
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auto value = deprecated_attribute(HTML::AttributeNames::http_equiv);
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#define __ENUMERATE_HTML_META_HTTP_EQUIV_ATTRIBUTE(keyword, state) \
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if (value.equals_ignoring_ascii_case(#keyword##sv)) \
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return HTMLMetaElement::HttpEquivAttributeState::state;
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ENUMERATE_HTML_META_HTTP_EQUIV_ATTRIBUTES
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#undef __ENUMERATE_HTML_META_HTTP_EQUIV_ATTRIBUTE
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return OptionalNone {};
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}
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void HTMLMetaElement::inserted()
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{
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Base::inserted();
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// https://html.spec.whatwg.org/multipage/semantics.html#pragma-directives
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// When a meta element is inserted into the document, if its http-equiv attribute is present and represents one of
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// the above states, then the user agent must run the algorithm appropriate for that state, as described in the
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// following list:
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auto http_equiv = http_equiv_state();
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if (http_equiv.has_value()) {
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switch (http_equiv.value()) {
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case HttpEquivAttributeState::Refresh: {
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// https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv-refresh
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// 1. If the meta element has no content attribute, or if that attribute's value is the empty string, then return.
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// 2. Let input be the value of the element's content attribute.
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if (!has_attribute(AttributeNames::content))
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break;
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auto input = deprecated_attribute(AttributeNames::content);
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if (input.is_empty())
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break;
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// 3. Run the shared declarative refresh steps with the meta element's node document, input, and the meta element.
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document().shared_declarative_refresh_steps(input, this);
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break;
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}
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default:
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dbgln("FIXME: Implement '{}' http-equiv state", deprecated_attribute(AttributeNames::http_equiv));
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break;
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}
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}
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}
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}
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