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LibWeb: Flesh out implementation of ResizeObserver interfaces

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Adds the initial implementation for interfaces defined in the
ResizeObserver specification. These interfaces will be used to
construct and send observation events in the upcoming changes.
This commit is contained in:
Aliaksandr Kalenik 2024-02-19 05:06:39 +01:00 • committed by Andreas Kling
parent fb4c632309
commit fb8edcea00
15 changed files with 494 additions and 13 deletions
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23
Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.h
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -7,6 +8,8 @@
#pragma once
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/ResizeObserver/ResizeObservation.h>
#include <LibWeb/ResizeObserver/ResizeObserverEntry.h>
namespace Web::ResizeObserver {
@ -14,7 +17,7 @@ struct ResizeObserverOptions {
Bindings::ResizeObserverBoxOptions box;
};
// https://drafts.csswg.org/resize-observer/#resize-observer-interface
// https://drafts.csswg.org/resize-observer-1/#resize-observer-interface
class ResizeObserver : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(ResizeObserver, Bindings::PlatformObject);
JS_DECLARE_ALLOCATOR(ResizeObserver);
@ -28,10 +31,26 @@ public:
void unobserve(DOM::Element& target);
void disconnect();
void invoke_callback(Vector<JS::NonnullGCPtr<ResizeObserverEntry>>& entries) const;
Vector<JS::NonnullGCPtr<ResizeObservation>>& observation_targets() { return m_observation_targets; }
Vector<JS::NonnullGCPtr<ResizeObservation>>& active_targets() { return m_active_targets; }
Vector<JS::NonnullGCPtr<ResizeObservation>>& skipped_targets() { return m_skipped_targets; }
private:
explicit ResizeObserver(JS::Realm&);
explicit ResizeObserver(JS::Realm&, WebIDL::CallbackType* callback);
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(JS::Cell::Visitor&) override;
virtual void finalize() override;
JS::GCPtr<WebIDL::CallbackType> m_callback;
Vector<JS::NonnullGCPtr<ResizeObservation>> m_observation_targets;
Vector<JS::NonnullGCPtr<ResizeObservation>> m_active_targets;
Vector<JS::NonnullGCPtr<ResizeObservation>> m_skipped_targets;
// AD-HOC: This is the document where we've registered the observer.
WeakPtr<DOM::Document> m_document;
};
}