9d2635d94b
The internal C++ function will now receive a RefPtr<EventListener> for 'EventListener?' and a NonnullRefPtr<EventListener> for 'EventListener'. Examples of this are addEventListener() and removeEventListener(), which both have nullable callback parameters.
86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/FlyString.h>
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#include <AK/Function.h>
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#include <AK/Noncopyable.h>
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#include <AK/Vector.h>
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#include <LibJS/Forward.h>
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#include <LibWeb/Forward.h>
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namespace Web::DOM {
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class EventTarget {
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AK_MAKE_NONCOPYABLE(EventTarget);
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AK_MAKE_NONMOVABLE(EventTarget);
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public:
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virtual ~EventTarget();
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void ref() { ref_event_target(); }
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void unref() { unref_event_target(); }
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void add_event_listener(const FlyString& event_name, RefPtr<EventListener>);
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void remove_event_listener(const FlyString& event_name, RefPtr<EventListener>);
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void remove_from_event_listener_list(NonnullRefPtr<EventListener>);
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virtual bool dispatch_event(NonnullRefPtr<Event>) = 0;
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virtual JS::Object* create_wrapper(JS::GlobalObject&) = 0;
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Bindings::ScriptExecutionContext* script_execution_context() { return m_script_execution_context; }
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virtual EventTarget* get_parent(const Event&) { return nullptr; }
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struct EventListenerRegistration {
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FlyString event_name;
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NonnullRefPtr<EventListener> listener;
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};
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Vector<EventListenerRegistration>& listeners() { return m_listeners; }
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const Vector<EventListenerRegistration>& listeners() const { return m_listeners; }
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Function<void(const Event&)> activation_behaviour;
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// NOTE: These only exist for checkbox and radio input elements.
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Function<void()> legacy_pre_activation_behaviour;
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Function<void()> legacy_cancelled_activation_behaviour;
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protected:
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explicit EventTarget(Bindings::ScriptExecutionContext&);
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virtual void ref_event_target() = 0;
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virtual void unref_event_target() = 0;
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private:
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// FIXME: This should not be a raw pointer.
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Bindings::ScriptExecutionContext* m_script_execution_context { nullptr };
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Vector<EventListenerRegistration> m_listeners;
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};
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}
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