Source/WebCore/bindings/js/JSErrorHandler.h

/*
 * Copyright (C) 2010 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.
 *     * 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
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER 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.
 */

#ifndef JSErrorHandler_h
#define JSErrorHandler_h

#include "JSEventListener.h"

namespace WebCore {

class JSErrorHandler final : public JSEventListener {
public:
    static Ref<JSErrorHandler> create(JSC::JSObject* listener, JSC::JSObject* wrapper, bool isAttribute, DOMWrapperWorld& world)
    {
        return adoptRef(*new JSErrorHandler(listener, wrapper, isAttribute, world));
    }

    virtual ~JSErrorHandler();

private:
    JSErrorHandler(JSC::JSObject* function, JSC::JSObject* wrapper, bool isAttribute, DOMWrapperWorld&);
    virtual void handleEvent(ScriptExecutionContext*, Event*);
};

// Creates a JS EventListener for "onerror" event handler in worker context. It has custom implementation because
// unlike other event listeners it accepts three parameters.
inline RefPtr<JSErrorHandler> createJSErrorHandler(JSC::ExecState* exec, JSC::JSValue listener, JSC::JSObject* wrapper)
{
    if (!listener.isObject())
        return nullptr;

    return JSErrorHandler::create(asObject(listener), wrapper, true, currentWorld(exec));
}

} // namespace WebCore

#endif // JSErrorHandler_h