mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-05-30 15:02:56 +00:00
2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
111 lines
3.8 KiB
C++
111 lines
3.8 KiB
C++
/*
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* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
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* Copyright (c) 2022, 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/NonnullRefPtrVector.h>
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#include <AK/RefCounted.h>
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#include <LibJS/Heap/Handle.h>
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#include <LibWeb/DOM/MutationRecord.h>
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#include <LibWeb/WebIDL/CallbackType.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::DOM {
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// https://dom.spec.whatwg.org/#dictdef-mutationobserverinit
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struct MutationObserverInit {
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bool child_list { false };
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Optional<bool> attributes;
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Optional<bool> character_data;
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bool subtree { false };
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Optional<bool> attribute_old_value;
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Optional<bool> character_data_old_value;
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Optional<Vector<DeprecatedString>> attribute_filter;
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};
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// https://dom.spec.whatwg.org/#mutationobserver
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class MutationObserver final : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(MutationObserver, Bindings::PlatformObject);
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public:
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static JS::NonnullGCPtr<MutationObserver> construct_impl(JS::Realm&, JS::GCPtr<WebIDL::CallbackType>);
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virtual ~MutationObserver() override;
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WebIDL::ExceptionOr<void> observe(Node& target, MutationObserverInit options = {});
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void disconnect();
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Vector<JS::Handle<MutationRecord>> take_records();
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Vector<WeakPtr<Node>>& node_list() { return m_node_list; }
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Vector<WeakPtr<Node>> const& node_list() const { return m_node_list; }
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WebIDL::CallbackType& callback() { return *m_callback; }
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void enqueue_record(Badge<Node>, JS::NonnullGCPtr<MutationRecord> mutation_record)
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{
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m_record_queue.append(*mutation_record);
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}
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private:
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MutationObserver(JS::Realm&, JS::GCPtr<WebIDL::CallbackType>);
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virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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// https://dom.spec.whatwg.org/#concept-mo-callback
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JS::GCPtr<WebIDL::CallbackType> m_callback;
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// https://dom.spec.whatwg.org/#mutationobserver-node-list
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// NOTE: These are weak, per https://dom.spec.whatwg.org/#garbage-collection
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// Registered observers in a node’s registered observer list have a weak reference to the node.
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Vector<WeakPtr<Node>> m_node_list;
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// https://dom.spec.whatwg.org/#concept-mo-queue
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Vector<JS::NonnullGCPtr<MutationRecord>> m_record_queue;
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};
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// https://dom.spec.whatwg.org/#registered-observer
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class RegisteredObserver : public JS::Cell {
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JS_CELL(RegisteredObserver, JS::Cell);
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public:
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static JS::NonnullGCPtr<RegisteredObserver> create(MutationObserver&, MutationObserverInit const&);
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virtual ~RegisteredObserver() override;
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JS::NonnullGCPtr<MutationObserver> observer() const { return m_observer; }
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MutationObserverInit const& options() const { return m_options; }
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void set_options(MutationObserverInit options) { m_options = move(options); }
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protected:
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RegisteredObserver(MutationObserver& observer, MutationObserverInit const& options);
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virtual void visit_edges(Cell::Visitor&) override;
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private:
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JS::NonnullGCPtr<MutationObserver> m_observer;
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MutationObserverInit m_options;
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};
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// https://dom.spec.whatwg.org/#transient-registered-observer
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class TransientRegisteredObserver final : public RegisteredObserver {
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JS_CELL(TransientRegisteredObserver, RegisteredObserver);
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public:
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static JS::NonnullGCPtr<TransientRegisteredObserver> create(MutationObserver&, MutationObserverInit const&, RegisteredObserver& source);
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virtual ~TransientRegisteredObserver() override;
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JS::NonnullGCPtr<RegisteredObserver> source() const { return m_source; }
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private:
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TransientRegisteredObserver(MutationObserver& observer, MutationObserverInit const& options, RegisteredObserver& source);
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virtual void visit_edges(Cell::Visitor&) override;
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JS::NonnullGCPtr<RegisteredObserver> m_source;
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};
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}
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