third_party/WebKit/Source/bindings/core/v8/V8EventListenerHelper.cpp

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * 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
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#include "bindings/core/v8/V8EventListenerHelper.h"

#include "bindings/core/v8/V8Binding.h"
#include "bindings/core/v8/V8Window.h"
#include "bindings/core/v8/V8WorkerGlobalScopeEventListener.h"

namespace blink {

EventListener* V8EventListenerHelper::getEventListener(
    ScriptState* scriptState,
    v8::Local<v8::Value> value,
    bool isAttribute,
    ListenerLookupType lookup) {
  if (lookup == ListenerFindOnly) {
    // Used by EventTarget::removeEventListener, specifically
    // EventTargetV8Internal::removeEventListenerMethod
    DCHECK(!isAttribute);
    return V8EventListenerHelper::existingEventListener(value, scriptState);
  }
  if (toDOMWindow(scriptState->context()))
    return V8EventListenerHelper::ensureEventListener<V8EventListener>(
        value, isAttribute, scriptState);
  return V8EventListenerHelper::ensureEventListener<
      V8WorkerGlobalScopeEventListener>(value, isAttribute, scriptState);
}

}  // namespace blink