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LibWeb: Add actual document loading for the CSS (at)import rule

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This commit is contained in:
Sviatoslav Peleshko 2021-02-21 18:44:17 +02:00 • committed by Andreas Kling
parent 54617e1a91
commit 183ebaee91
11 changed files with 229 additions and 56 deletions
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45
Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -35,7 +36,11 @@ namespace Web::HTML {
HTMLLinkElement::HTMLLinkElement(DOM::Document& document, QualifiedName qualified_name)
: HTMLElement(document, move(qualified_name))
, m_css_loader(document)
{
m_css_loader.on_load = [&] {
document.update_style();
};
}
HTMLLinkElement::~HTMLLinkElement()
@ -46,44 +51,10 @@ void HTMLLinkElement::inserted_into(Node& node)
{
HTMLElement::inserted_into(node);
if (m_relationship & Relationship::Stylesheet && !(m_relationship & Relationship::Alternate))
load_stylesheet(document().complete_url(href()));
}
void HTMLLinkElement::resource_did_fail()
{
}
void HTMLLinkElement::resource_did_load()
{
VERIFY(resource());
if (!resource()->has_encoded_data())
return;
dbgln("HTMLLinkElement: Resource did load, looks good! {}", href());
auto sheet = parse_css(CSS::ParsingContext(document()), resource()->encoded_data());
if (!sheet) {
dbgln("HTMLLinkElement: Failed to parse stylesheet: {}", href());
return;
if (m_relationship & Relationship::Stylesheet && !(m_relationship & Relationship::Alternate)) {
m_css_loader.load_from_url(document().complete_url(href()));
document().style_sheets().add_sheet(m_css_loader.style_sheet().release_nonnull());
}
// Transfer the rules from the successfully parsed sheet into the sheet we've already inserted.
m_style_sheet->rules() = sheet->rules();
document().update_style();
}
void HTMLLinkElement::load_stylesheet(const URL& url)
{
// First insert an empty style sheet in the document sheet list.
// There's probably a nicer way to do this, but this ensures that sheets are in document order.
m_style_sheet = CSS::StyleSheet::create({});
document().style_sheets().add_sheet(*m_style_sheet);
LoadRequest request;
request.set_url(url);
set_resource(ResourceLoader::the().load_resource(Resource::Type::Generic, request));
}
void HTMLLinkElement::parse_attribute(const FlyString& name, const String& value)