ladybird/Libraries/LibWeb/StorageAPI/StorageShed.cpp
Shannon Booth 2066ed2318 LibWeb: Correctly initialize Storage objects on the Document
Instead of storing all storage objects in static memory, we now
follow the the spec by lazily creating a unique Storage object
on each document object.

Each Storage object now holds a 'proxy' to the underlying backing
storage. For now, this proxy is simply a reference to the backing
object. In the future, it will need to be some type of interface
object that stores on a SQLite database or similar.

Session storage is now correctly stored / tracked as part of the
TraversableNavigable object.

Local storage is still stored in a static map, but eventually this
should be factored into something that is stored at the user agent
level.
2025-01-02 11:31:15 +01:00

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/*
* Copyright (c) 2024-2025, Shannon Booth <shannon@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/HTML/Scripting/Environments.h>
#include <LibWeb/StorageAPI/StorageShed.h>
namespace Web::StorageAPI {
// https://storage.spec.whatwg.org/#obtain-a-storage-shelf
Optional<StorageShelf&> StorageShed::obtain_a_storage_shelf(HTML::EnvironmentSettingsObject const& environment, StorageType type)
{
// 1. Let key be the result of running obtain a storage key with environment.
auto key = obtain_a_storage_key(environment);
// 2. If key is failure, then return failure.
if (!key.has_value())
return {};
// 3. If shed[key] does not exist, then set shed[key] to the result of running create a storage shelf with type.
// 4. Return shed[key].
return m_data.ensure(key.value(), [type] {
return StorageShelf { type };
});
}
// https://storage.spec.whatwg.org/#user-agent-storage-shed
StorageShed& user_agent_storage_shed()
{
// A user agent holds a storage shed, which is a storage shed. A user agents storage shed holds all local storage data.
// FIXME: Storing this statically in memory is not the correct place or way of doing this!
static StorageShed storage_shed;
return storage_shed;
}
}