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