/* * Copyright (C) 2016 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: * 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "DOMWindow.h" #include "JSDOMBinding.h" namespace WebCore { // Wrapper type for JSEventTarget's castedThis because JSDOMWindow and JSWorkerGlobalScope do not inherit JSEventTarget. class JSEventTargetWrapper { WTF_MAKE_FAST_ALLOCATED; public: JSEventTargetWrapper(EventTarget& wrapped, JSC::JSObject& wrapper) : m_wrapped(wrapped) , m_wrapper(wrapper) { } EventTarget& wrapped() { return m_wrapped; } operator JSC::JSObject&() { return m_wrapper; } private: EventTarget& m_wrapped; JSC::JSObject& m_wrapper; }; std::unique_ptr<JSEventTargetWrapper> jsEventTargetCast(JSC::JSValue thisValue); template<> struct BindingCaller<JSEventTarget> { using OperationCallerFunction = JSC::EncodedJSValue(JSC::ExecState*, JSEventTargetWrapper*, JSC::ThrowScope&); template<OperationCallerFunction operationCaller> static JSC::EncodedJSValue callOperation(JSC::ExecState* state, const char* operationName) { ASSERT(state); auto throwScope = DECLARE_THROW_SCOPE(state->vm()); auto thisObject = jsEventTargetCast(state->thisValue().toThis(state, JSC::NotStrictMode)); if (UNLIKELY(!thisObject)) return throwThisTypeError(*state, throwScope, "EventTarget", operationName); if (auto* window = thisObject->wrapped().toDOMWindow()) { if (!window->frame() || !BindingSecurity::shouldAllowAccessToDOMWindow(state, *window, ThrowSecurityError)) return JSC::JSValue::encode(JSC::jsUndefined()); } return operationCaller(state, thisObject.get(), throwScope); } }; } // namespace WebCore