text: /*
   * 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.
   */
  
  #include <AK/FlyString.h>
  #include <AK/Function.h>
  #include <LibJS/Interpreter.h>
  #include <LibJS/Runtime/Function.h>
  #include <LibJS/Runtime/GlobalObject.h>
  #include <LibWeb/Bindings/EventListenerWrapper.h>
  #include <LibWeb/Bindings/EventTargetWrapper.h>
  #include <LibWeb/DOM/EventListener.h>
  #include <LibWeb/DOM/EventTarget.h>
  
  namespace Web {
  namespace Bindings {
  
  EventTargetWrapper::EventTargetWrapper(EventTarget& impl)
      : Wrapper(*interpreter().global_object().object_prototype())
      , m_impl(impl)
  {
      put_native_function("addEventListener", add_event_listener, 2);
  }
  
  EventTargetWrapper::~EventTargetWrapper()
  {
  }
  
  JS::Value EventTargetWrapper::add_event_listener(JS::Interpreter& interpreter)
  {
      auto* this_object = interpreter.this_value().to_object(interpreter.heap());
      if (!this_object)
          return {};
      auto& arguments = interpreter.call_frame().arguments;
      if (arguments.size() < 2)
          return JS::js_undefined();
      auto event_name = arguments[0].to_string();
      ASSERT(arguments[1].is_object());
      ASSERT(arguments[1].as_object().is_function());
      auto& function = static_cast<JS::Function&>(const_cast<Object&>(arguments[1].as_object()));
      auto listener = adopt(*new EventListener(JS::make_handle(&function)));
      static_cast<EventTargetWrapper*>(this_object)->impl().add_event_listener(event_name, move(listener));
      return JS::js_undefined();
  }
  
  }
  }
  