1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
* Copyright (C) 2010 Google Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#pragma once
#include "Node.h"
#include "TreeScope.h"
namespace WebCore {
class TouchList;
class EventContext {
WTF_MAKE_FAST_ALLOCATED;
public:
// FIXME: Use ContainerNode instead of Node.
EventContext(Node*, EventTarget* currentTarget, EventTarget*);
virtual ~EventContext();
Node* node() const { return m_node.get(); }
EventTarget* currentTarget() const { return m_currentTarget.get(); }
EventTarget* target() const { return m_target.get(); }
bool currentTargetSameAsTarget() const { return m_currentTarget.get() == m_target.get(); }
virtual void handleLocalEvents(Event&) const;
virtual bool isMouseOrFocusEventContext() const;
virtual bool isTouchEventContext() const;
protected:
#if !ASSERT_DISABLED
bool isUnreachableNode(EventTarget*) const;
#endif
RefPtr<Node> m_node;
RefPtr<EventTarget> m_currentTarget;
RefPtr<EventTarget> m_target;
};
class MouseOrFocusEventContext final : public EventContext {
public:
MouseOrFocusEventContext(Node*, EventTarget* currentTarget, EventTarget*);
virtual ~MouseOrFocusEventContext();
Node* relatedTarget() const { return m_relatedTarget.get(); }
void setRelatedTarget(Node*);
private:
void handleLocalEvents(Event&) const final;
bool isMouseOrFocusEventContext() const final;
RefPtr<Node> m_relatedTarget;
};
#if ENABLE(TOUCH_EVENTS)
class TouchEventContext final : public EventContext {
public:
TouchEventContext(Node*, EventTarget* currentTarget, EventTarget*);
virtual ~TouchEventContext();
void handleLocalEvents(Event&) const override;
bool isTouchEventContext() const override;
enum TouchListType { Touches, TargetTouches, ChangedTouches, NotTouchList };
TouchList* touchList(TouchListType);
TouchList* touches() { return m_touches.get(); }
TouchList* targetTouches() { return m_targetTouches.get(); }
TouchList* changedTouches() { return m_changedTouches.get(); }
private:
#if !ASSERT_DISABLED
void checkReachability(TouchList*) const;
#endif
RefPtr<TouchList> m_touches;
RefPtr<TouchList> m_targetTouches;
RefPtr<TouchList> m_changedTouches;
};
#endif // ENABLE(TOUCH_EVENTS)
#if !ASSERT_DISABLED
inline bool EventContext::isUnreachableNode(EventTarget* target) const
{
// FIXME: Checks also for SVG elements.
return target && target->toNode() && !target->toNode()->isSVGElement() && m_node->isClosedShadowHidden(*target->toNode());
}
#endif
inline void MouseOrFocusEventContext::setRelatedTarget(Node* relatedTarget)
{
ASSERT(!isUnreachableNode(relatedTarget));
m_relatedTarget = relatedTarget;
}
#if ENABLE(TOUCH_EVENTS)
inline TouchList* TouchEventContext::touchList(TouchListType type)
{
switch (type) {
case Touches:
return m_touches.get();
case TargetTouches:
return m_targetTouches.get();
case ChangedTouches:
return m_changedTouches.get();
case NotTouchList:
break;
}
ASSERT_NOT_REACHED();
return nullptr;
}
#endif
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::MouseOrFocusEventContext)
static bool isType(const WebCore::EventContext& context) { return context.isMouseOrFocusEventContext(); }
SPECIALIZE_TYPE_TRAITS_END()
#if ENABLE(TOUCH_EVENTS)
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::TouchEventContext)
static bool isType(const WebCore::EventContext& context) { return context.isTouchEventContext(); }
SPECIALIZE_TYPE_TRAITS_END()
#endif
|
