Source/WebCore/bindings/js/JSErrorHandler.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 * Copyright (C) 2017 Apple 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:
 *
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 * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * 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
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#pragma once

#include "JSEventListener.h"

namespace WebCore {

class JSErrorHandler final : public JSEventListener {
public:
    static Ref<JSErrorHandler> create(JSC::JSObject& listener, JSC::JSObject& wrapper, bool isAttribute, DOMWrapperWorld&);
    virtual ~JSErrorHandler();

private:
    JSErrorHandler(JSC::JSObject& listener, JSC::JSObject& wrapper, bool isAttribute, DOMWrapperWorld&);
    void handleEvent(ScriptExecutionContext&, Event&) final;
};

// Creates a listener for "onerror" event handler.
// It has custom implementation because, unlike other event listeners, it accepts three parameters.
inline RefPtr<JSErrorHandler> createJSErrorHandler(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue listener, JSC::JSObject& wrapper)
{
    if (!listener.isObject())
        return nullptr;
    return JSErrorHandler::create(*asObject(listener), wrapper, true, currentWorld(lexicalGlobalObject));
}

} // namespace WebCore