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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/ByteBuffer.h>
#include <AK/Debug.h>
#include <AK/URL.h>
#include <LibCore/File.h>
#include <LibWeb/CSS/Parser/CSSParser.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/HTML/HTMLLinkElement.h>
#include <LibWeb/Loader/ResourceLoader.h>
namespace Web::HTML {
HTMLLinkElement::HTMLLinkElement(DOM::Document& document, QualifiedName qualified_name)
: HTMLElement(document, move(qualified_name))
{
}
HTMLLinkElement::~HTMLLinkElement()
{
}
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()
{
ASSERT(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;
}
// 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)
{
if (name == HTML::AttributeNames::rel) {
m_relationship = 0;
auto parts = value.split_view(' ');
for (auto& part : parts) {
if (part == "stylesheet")
m_relationship |= Relationship::Stylesheet;
else if (part == "alternate")
m_relationship |= Relationship::Alternate;
}
}
}
}
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