1 | /* |
2 | * Copyright (C) 2006, 2008, 2009 Apple Inc. All rights reserved. |
3 | * |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Library General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2 of the License, or (at your option) any later version. |
8 | * |
9 | * This library is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Library General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Library General Public License |
15 | * along with this library; see the file COPYING.LIB. If not, write to |
16 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
17 | * Boston, MA 02110-1301, USA. |
18 | * |
19 | */ |
20 | |
21 | #pragma once |
22 | |
23 | #include <wtf/RefCounted.h> |
24 | |
25 | namespace JSC { |
26 | class JSObject; |
27 | class SlotVisitor; |
28 | } |
29 | |
30 | namespace WebCore { |
31 | |
32 | class ScriptExecutionContext; |
33 | class Event; |
34 | class EventTarget; |
35 | |
36 | class EventListener : public RefCounted<EventListener> { |
37 | public: |
38 | enum Type { |
39 | JSEventListenerType, |
40 | ImageEventListenerType, |
41 | ObjCEventListenerType, |
42 | CPPEventListenerType, |
43 | ConditionEventListenerType, |
44 | GObjectEventListenerType, |
45 | NativeEventListenerType, |
46 | SVGTRefTargetEventListenerType, |
47 | }; |
48 | |
49 | virtual ~EventListener() = default; |
50 | virtual bool operator==(const EventListener&) const = 0; |
51 | virtual void handleEvent(ScriptExecutionContext&, Event&) = 0; |
52 | virtual bool wasCreatedFromMarkup() const { return false; } |
53 | |
54 | virtual void visitJSFunction(JSC::SlotVisitor&) { } |
55 | |
56 | virtual bool isAttribute() const { return false; } |
57 | Type type() const { return m_type; } |
58 | |
59 | #if !ASSERT_DISABLED |
60 | virtual void checkValidityForEventTarget(EventTarget&) { } |
61 | #endif |
62 | |
63 | protected: |
64 | explicit EventListener(Type type) |
65 | : m_type(type) |
66 | { |
67 | } |
68 | |
69 | private: |
70 | Type m_type; |
71 | }; |
72 | |
73 | } // namespace WebCore |
74 | |