1/*
2 * Copyright (C) 2017 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 "ExceptionOr.h"
29#include "PerformanceEntry.h"
30#include "PerformanceObserverCallback.h"
31#include <wtf/OptionSet.h>
32#include <wtf/RefCounted.h>
33#include <wtf/Vector.h>
34#include <wtf/text/WTFString.h>
35
36namespace WebCore {
37
38class Performance;
39class ScriptExecutionContext;
40
41class PerformanceObserver : public RefCounted<PerformanceObserver> {
42public:
43 struct Init {
44 Vector<String> entryTypes;
45 };
46
47 static Ref<PerformanceObserver> create(ScriptExecutionContext& context, Ref<PerformanceObserverCallback>&& callback)
48 {
49 return adoptRef(*new PerformanceObserver(context, WTFMove(callback)));
50 }
51
52 static Vector<String> supportedEntryTypes();
53
54 void disassociate();
55
56 ExceptionOr<void> observe(Init&&);
57 void disconnect();
58
59 OptionSet<PerformanceEntry::Type> typeFilter() const { return m_typeFilter; }
60
61 void queueEntry(PerformanceEntry&);
62 void deliver();
63
64 bool isRegistered() const { return m_registered; }
65 PerformanceObserverCallback& callback() { return m_callback.get(); }
66
67private:
68 PerformanceObserver(ScriptExecutionContext&, Ref<PerformanceObserverCallback>&&);
69
70 RefPtr<Performance> m_performance;
71 Vector<RefPtr<PerformanceEntry>> m_entriesToDeliver;
72 Ref<PerformanceObserverCallback> m_callback;
73 OptionSet<PerformanceEntry::Type> m_typeFilter;
74 bool m_registered { false };
75};
76
77} // namespace WebCore
78