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LibWeb: Add class to represent "list of available images" from HTML spec

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Andreas Kling 2023-05-11 06:12:45 +02:00
parent 596eabe9e6
commit 9281bf7a01
6 changed files with 158 additions and 0 deletions
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66
Userland/Libraries/LibWeb/HTML/ListOfAvailableImages.cpp Normal file
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/*
* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/HTML/DecodedImageData.h>
#include <LibWeb/HTML/ListOfAvailableImages.h>
namespace Web::HTML {
ListOfAvailableImages::ListOfAvailableImages() = default;
ListOfAvailableImages::~ListOfAvailableImages() = default;
bool ListOfAvailableImages::Key::operator==(Key const& other) const
{
return url == other.url && mode == other.mode && origin == other.origin;
}
u32 ListOfAvailableImages::Key::hash() const
{
if (!cached_hash.has_value()) {
u32 url_hash = Traits<AK::URL>::hash(url);
u32 mode_hash = static_cast<u32>(mode);
u32 origin_hash = 0;
if (origin.has_value())
origin_hash = Traits<HTML::Origin>::hash(origin.value());
cached_hash = pair_int_hash(url_hash, pair_int_hash(mode_hash, origin_hash));
}
return cached_hash.value();
}
ErrorOr<NonnullRefPtr<ListOfAvailableImages::Entry>> ListOfAvailableImages::Entry::create(NonnullRefPtr<DecodedImageData> image_data, bool ignore_higher_layer_caching)
{
return adopt_nonnull_ref_or_enomem(new (nothrow) Entry(move(image_data), ignore_higher_layer_caching));
}
ListOfAvailableImages::Entry::Entry(NonnullRefPtr<DecodedImageData> data, bool ignore_higher_layer_caching)
: ignore_higher_layer_caching(ignore_higher_layer_caching)
, image_data(move(data))
{
}
ListOfAvailableImages::Entry::~Entry() = default;
ErrorOr<void> ListOfAvailableImages::add(Key const& key, NonnullRefPtr<DecodedImageData> image_data, bool ignore_higher_layer_caching)
{
auto entry = TRY(Entry::create(move(image_data), ignore_higher_layer_caching));
TRY(m_images.try_set(key, move(entry)));
return {};
}
void ListOfAvailableImages::remove(Key const& key)
{
m_images.remove(key);
}
RefPtr<ListOfAvailableImages::Entry> ListOfAvailableImages::get(Key const& key) const
{
auto it = m_images.find(key);
if (it == m_images.end())
return nullptr;
return it->value;
}
}