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103 lines
3.7 KiB
C++
103 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, the SerenityOS developers.
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* Copyright (c) 2021, Sam Atkins <atkinssj@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 <AK/ByteBuffer.h>
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#include <AK/Debug.h>
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#include <AK/URL.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/HTMLLinkElement.h>
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#include <LibWeb/Loader/ResourceLoader.h>
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namespace Web::HTML {
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HTMLLinkElement::HTMLLinkElement(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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HTMLLinkElement::~HTMLLinkElement()
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{
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}
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void HTMLLinkElement::inserted()
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{
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HTMLElement::inserted();
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if (m_relationship & Relationship::Stylesheet && !(m_relationship & Relationship::Alternate)) {
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auto url = document().parse_url(href());
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dbgln_if(CSS_LOADER_DEBUG, "HTMLLinkElement: Loading import URL: {}", url);
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auto request = LoadRequest::create_for_url_on_page(url, document().page());
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// NOTE: Mark this element as delaying the document load event *before* calling set_resource()
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// as it may trigger a synchronous resource_did_load() callback.
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m_document_load_event_delayer.emplace(document());
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set_resource(ResourceLoader::the().load_resource(Resource::Type::Generic, request));
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}
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if (m_relationship & Relationship::Preload) {
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// FIXME: Respect the "as" attribute.
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LoadRequest request;
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request.set_url(document().parse_url(attribute(HTML::AttributeNames::href)));
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m_preload_resource = ResourceLoader::the().load_resource(Resource::Type::Generic, request);
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} else if (m_relationship & Relationship::DNSPrefetch) {
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ResourceLoader::the().prefetch_dns(document().parse_url(attribute(HTML::AttributeNames::href)));
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} else if (m_relationship & Relationship::Preconnect) {
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ResourceLoader::the().preconnect(document().parse_url(attribute(HTML::AttributeNames::href)));
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}
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}
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void HTMLLinkElement::parse_attribute(const FlyString& name, const String& value)
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{
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if (name == HTML::AttributeNames::rel) {
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m_relationship = 0;
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auto parts = value.split_view(' ');
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for (auto& part : parts) {
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if (part == "stylesheet"sv)
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m_relationship |= Relationship::Stylesheet;
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else if (part == "alternate"sv)
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m_relationship |= Relationship::Alternate;
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else if (part == "preload"sv)
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m_relationship |= Relationship::Preload;
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else if (part == "dns-prefetch"sv)
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m_relationship |= Relationship::DNSPrefetch;
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else if (part == "preconnect"sv)
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m_relationship |= Relationship::Preconnect;
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}
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}
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}
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void HTMLLinkElement::resource_did_fail()
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{
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dbgln_if(CSS_LOADER_DEBUG, "HTMLLinkElement: Resource did fail. URL: {}", resource()->url());
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m_document_load_event_delayer.clear();
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}
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void HTMLLinkElement::resource_did_load()
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{
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VERIFY(resource());
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m_document_load_event_delayer.clear();
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if (!resource()->has_encoded_data()) {
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dbgln_if(CSS_LOADER_DEBUG, "HTMLLinkElement: Resource did load, no encoded data. URL: {}", resource()->url());
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} else {
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dbgln_if(CSS_LOADER_DEBUG, "HTMLLinkElement: Resource did load, has encoded data. URL: {}", resource()->url());
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}
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auto sheet = parse_css(CSS::ParsingContext(document()), resource()->encoded_data());
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if (!sheet) {
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dbgln_if(CSS_LOADER_DEBUG, "HTMLLinkElement: Failed to parse stylesheet: {}", resource()->url());
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return;
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}
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sheet->set_owner_node(this);
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document().style_sheets().add_sheet(sheet.release_nonnull());
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}
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}
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