1/*
2 * Copyright (C) 2016 Igalia S.L
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 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if PLATFORM(X11)
29#include <X11/Xlib.h>
30#include <wtf/Vector.h>
31
32namespace WebCore {
33
34class XErrorTrapper {
35 WTF_MAKE_NONCOPYABLE(XErrorTrapper);
36public:
37 enum class Policy { Ignore, Warn, Crash };
38 XErrorTrapper(Display*, Policy = Policy::Ignore, Vector<unsigned char>&& expectedErrors = { });
39 ~XErrorTrapper();
40
41 unsigned char errorCode() const;
42
43private:
44 void errorEvent(XErrorEvent*);
45
46 Display* m_display { nullptr };
47 Policy m_policy { Policy::Ignore };
48 Vector<unsigned char> m_expectedErrors;
49 XErrorHandler m_previousErrorHandler { nullptr };
50 unsigned char m_errorCode { 0 };
51};
52
53} // namespace WebCore
54
55#endif // PLATFORM(X11)
56