1/*
2 * Copyright (C) 2016 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "DOMWindow.h"
29#include "JSDOMBinding.h"
30#include "JSDOMBindingSecurity.h"
31#include "JSDOMOperation.h"
32
33namespace WebCore {
34
35// Wrapper type for JSEventTarget's castedThis because JSDOMWindow and JSWorkerGlobalScope do not inherit JSEventTarget.
36class JSEventTargetWrapper {
37 WTF_MAKE_FAST_ALLOCATED;
38public:
39 JSEventTargetWrapper(EventTarget& wrapped, JSC::JSObject& wrapper)
40 : m_wrapped(wrapped)
41 , m_wrapper(wrapper)
42 { }
43
44 EventTarget& wrapped() { return m_wrapped; }
45
46 operator JSC::JSObject&() { return m_wrapper; }
47
48private:
49 EventTarget& m_wrapped;
50 JSC::JSObject& m_wrapper;
51};
52
53std::unique_ptr<JSEventTargetWrapper> jsEventTargetCast(JSC::VM&, JSC::JSValue thisValue);
54
55template<> class IDLOperation<JSEventTarget> {
56public:
57 using ClassParameter = JSEventTargetWrapper*;
58 using Operation = JSC::EncodedJSValue(JSC::ExecState*, ClassParameter, JSC::ThrowScope&);
59
60 template<Operation operation, CastedThisErrorBehavior = CastedThisErrorBehavior::Throw>
61 static JSC::EncodedJSValue call(JSC::ExecState& state, const char* operationName)
62 {
63 auto& vm = state.vm();
64 auto throwScope = DECLARE_THROW_SCOPE(vm);
65
66 auto thisObject = jsEventTargetCast(vm, state.thisValue().toThis(&state, JSC::NotStrictMode));
67 if (UNLIKELY(!thisObject))
68 return throwThisTypeError(state, throwScope, "EventTarget", operationName);
69
70 auto& wrapped = thisObject->wrapped();
71 if (is<DOMWindow>(wrapped)) {
72 auto& window = downcast<DOMWindow>(wrapped);
73 if (!window.frame() || !BindingSecurity::shouldAllowAccessToDOMWindow(&state, window, ThrowSecurityError))
74 return JSC::JSValue::encode(JSC::jsUndefined());
75 }
76
77 return operation(&state, thisObject.get(), throwScope);
78 }
79
80};
81
82
83} // namespace WebCore
84