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934afcb9d5
This allows to partially solve the problem of cyclic dependency between HTMLImageElement and SharedImageRequest that prevents all image elements from being deallocated.
71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
/*
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* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Error.h>
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#include <AK/OwnPtr.h>
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#include <AK/URL.h>
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#include <LibGfx/Size.h>
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#include <LibJS/Heap/Handle.h>
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#include <LibJS/SafeFunction.h>
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#include <LibWeb/Forward.h>
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namespace Web::HTML {
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class SharedImageRequest : public JS::Cell {
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JS_CELL(ImageRequest, JS::Cell);
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public:
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[[nodiscard]] static JS::NonnullGCPtr<SharedImageRequest> get_or_create(JS::Realm&, Page&, AK::URL const&);
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~SharedImageRequest();
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AK::URL const& url() const { return m_url; }
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[[nodiscard]] RefPtr<DecodedImageData const> image_data() const;
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[[nodiscard]] JS::GCPtr<Fetch::Infrastructure::FetchController> fetch_controller();
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void set_fetch_controller(JS::GCPtr<Fetch::Infrastructure::FetchController>);
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void fetch_image(JS::Realm&, JS::NonnullGCPtr<Fetch::Infrastructure::Request>);
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void add_callbacks(JS::SafeFunction<void()> on_finish, JS::SafeFunction<void()> on_fail);
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bool is_fetching() const;
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bool needs_fetching() const;
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virtual void visit_edges(JS::Cell::Visitor&) override;
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private:
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explicit SharedImageRequest(Page&, AK::URL);
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void handle_successful_fetch(AK::URL const&, StringView mime_type, ByteBuffer data);
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void handle_failed_fetch();
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enum class State {
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New,
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Fetching,
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Finished,
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Failed,
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};
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State m_state { State::New };
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Page& m_page;
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struct Callbacks {
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JS::SafeFunction<void()> on_finish;
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JS::SafeFunction<void()> on_fail;
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};
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Vector<Callbacks> m_callbacks;
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AK::URL m_url;
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RefPtr<DecodedImageData const> m_image_data;
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JS::GCPtr<Fetch::Infrastructure::FetchController> m_fetch_controller;
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};
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}
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