1 | /* |
2 | * Copyright (C) 2010 Google Inc. All Rights Reserved. |
3 | * Copyright (C) 2013 Apple Inc. All Rights Reserved. |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
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 INC. ``AS IS'' AND ANY |
15 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
17 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
18 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
19 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
20 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
21 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
22 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | * |
26 | */ |
27 | |
28 | #pragma once |
29 | |
30 | #include "Event.h" |
31 | #include "EventQueue.h" |
32 | #include <memory> |
33 | #include <wtf/HashSet.h> |
34 | #include <wtf/ListHashSet.h> |
35 | |
36 | namespace WebCore { |
37 | |
38 | class Document; |
39 | class Node; |
40 | |
41 | class DocumentEventQueue final : public EventQueue { |
42 | public: |
43 | explicit DocumentEventQueue(Document&); |
44 | virtual ~DocumentEventQueue(); |
45 | |
46 | bool enqueueEvent(Ref<Event>&&) override; |
47 | bool cancelEvent(Event&) override; |
48 | void close() override; |
49 | |
50 | void enqueueOrDispatchScrollEvent(Node&); |
51 | void enqueueScrollEvent(EventTarget&, Event::CanBubble, Event::IsCancelable); |
52 | void enqueueResizeEvent(EventTarget&, Event::CanBubble, Event::IsCancelable); |
53 | |
54 | private: |
55 | void pendingEventTimerFired(); |
56 | void dispatchEvent(Event&); |
57 | |
58 | class Timer; |
59 | |
60 | Document& m_document; |
61 | std::unique_ptr<Timer> m_pendingEventTimer; |
62 | ListHashSet<RefPtr<Event>> m_queuedEvents; |
63 | HashSet<EventTarget*> m_targetsWithQueuedScrollEvents; |
64 | HashSet<EventTarget*> m_targetsWithQueuedResizeEvents; |
65 | bool m_isClosed; |
66 | }; |
67 | |
68 | } // namespace WebCore |
69 | |