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1 /* | 1 /* |
2 * Copyright (C) 2010 Google Inc. All Rights Reserved. | 2 * Copyright (C) 2010 Google Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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28 #define EventContext_h | 28 #define EventContext_h |
29 | 29 |
30 #include "EventTarget.h" | 30 #include "EventTarget.h" |
31 #include "Node.h" | 31 #include "Node.h" |
32 #include "TreeScope.h" | 32 #include "TreeScope.h" |
33 #include <wtf/RefPtr.h> | 33 #include <wtf/RefPtr.h> |
34 | 34 |
35 namespace WebCore { | 35 namespace WebCore { |
36 | 36 |
37 class Event; | 37 class Event; |
38 #if ENABLE(TOUCH_EVENTS) | |
39 class TouchList; | 38 class TouchList; |
40 #endif | |
41 | 39 |
42 class EventContext { | 40 class EventContext { |
43 public: | 41 public: |
44 // FIXME: Use ContainerNode instead of Node. | 42 // FIXME: Use ContainerNode instead of Node. |
45 EventContext(PassRefPtr<Node>, PassRefPtr<EventTarget> currentTarget, PassRe
fPtr<EventTarget> target); | 43 EventContext(PassRefPtr<Node>, PassRefPtr<EventTarget> currentTarget, PassRe
fPtr<EventTarget> target); |
46 virtual ~EventContext(); | 44 virtual ~EventContext(); |
47 | 45 |
48 Node* node() const { return m_node.get(); } | 46 Node* node() const { return m_node.get(); } |
49 EventTarget* target() const { return m_target.get(); } | 47 EventTarget* target() const { return m_target.get(); } |
50 bool currentTargetSameAsTarget() const { return m_currentTarget.get() == m_t
arget.get(); } | 48 bool currentTargetSameAsTarget() const { return m_currentTarget.get() == m_t
arget.get(); } |
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71 EventTarget* relatedTarget() const { return m_relatedTarget.get(); } | 69 EventTarget* relatedTarget() const { return m_relatedTarget.get(); } |
72 void setRelatedTarget(PassRefPtr<EventTarget>); | 70 void setRelatedTarget(PassRefPtr<EventTarget>); |
73 virtual void handleLocalEvents(Event*) const OVERRIDE; | 71 virtual void handleLocalEvents(Event*) const OVERRIDE; |
74 virtual bool isMouseOrFocusEventContext() const OVERRIDE; | 72 virtual bool isMouseOrFocusEventContext() const OVERRIDE; |
75 | 73 |
76 private: | 74 private: |
77 RefPtr<EventTarget> m_relatedTarget; | 75 RefPtr<EventTarget> m_relatedTarget; |
78 }; | 76 }; |
79 | 77 |
80 | 78 |
81 #if ENABLE(TOUCH_EVENTS) | |
82 class TouchEventContext : public EventContext { | 79 class TouchEventContext : public EventContext { |
83 public: | 80 public: |
84 TouchEventContext(PassRefPtr<Node>, PassRefPtr<EventTarget> currentTarget, P
assRefPtr<EventTarget> target); | 81 TouchEventContext(PassRefPtr<Node>, PassRefPtr<EventTarget> currentTarget, P
assRefPtr<EventTarget> target); |
85 virtual ~TouchEventContext(); | 82 virtual ~TouchEventContext(); |
86 | 83 |
87 virtual void handleLocalEvents(Event*) const OVERRIDE; | 84 virtual void handleLocalEvents(Event*) const OVERRIDE; |
88 virtual bool isTouchEventContext() const OVERRIDE; | 85 virtual bool isTouchEventContext() const OVERRIDE; |
89 | 86 |
90 TouchList* touches() { return m_touches.get(); } | 87 TouchList* touches() { return m_touches.get(); } |
91 TouchList* targetTouches() { return m_targetTouches.get(); } | 88 TouchList* targetTouches() { return m_targetTouches.get(); } |
92 TouchList* changedTouches() { return m_changedTouches.get(); } | 89 TouchList* changedTouches() { return m_changedTouches.get(); } |
93 | 90 |
94 private: | 91 private: |
95 RefPtr<TouchList> m_touches; | 92 RefPtr<TouchList> m_touches; |
96 RefPtr<TouchList> m_targetTouches; | 93 RefPtr<TouchList> m_targetTouches; |
97 RefPtr<TouchList> m_changedTouches; | 94 RefPtr<TouchList> m_changedTouches; |
98 #ifndef NDEBUG | 95 #ifndef NDEBUG |
99 void checkReachability(TouchList*) const; | 96 void checkReachability(TouchList*) const; |
100 #endif | 97 #endif |
101 }; | 98 }; |
102 | 99 |
103 inline TouchEventContext* toTouchEventContext(EventContext* eventContext) | 100 inline TouchEventContext* toTouchEventContext(EventContext* eventContext) |
104 { | 101 { |
105 ASSERT_WITH_SECURITY_IMPLICATION(!eventContext || eventContext->isTouchEvent
Context()); | 102 ASSERT_WITH_SECURITY_IMPLICATION(!eventContext || eventContext->isTouchEvent
Context()); |
106 return static_cast<TouchEventContext*>(eventContext); | 103 return static_cast<TouchEventContext*>(eventContext); |
107 } | 104 } |
108 #endif // ENABLE(TOUCH_EVENTS) | |
109 | 105 |
110 #ifndef NDEBUG | 106 #ifndef NDEBUG |
111 inline bool EventContext::isUnreachableNode(EventTarget* target) | 107 inline bool EventContext::isUnreachableNode(EventTarget* target) |
112 { | 108 { |
113 // FIXME: Checks also for SVG elements. | 109 // FIXME: Checks also for SVG elements. |
114 return target && target->toNode() && !target->toNode()->isSVGElement() && !i
sReachable(target->toNode()); | 110 return target && target->toNode() && !target->toNode()->isSVGElement() && !i
sReachable(target->toNode()); |
115 } | 111 } |
116 | 112 |
117 inline bool EventContext::isReachable(Node* target) const | 113 inline bool EventContext::isReachable(Node* target) const |
118 { | 114 { |
119 ASSERT(target); | 115 ASSERT(target); |
120 TreeScope* targetScope = target->treeScope(); | 116 TreeScope* targetScope = target->treeScope(); |
121 for (TreeScope* scope = m_node->treeScope(); scope; scope = scope->parentTre
eScope()) { | 117 for (TreeScope* scope = m_node->treeScope(); scope; scope = scope->parentTre
eScope()) { |
122 if (scope == targetScope) | 118 if (scope == targetScope) |
123 return true; | 119 return true; |
124 } | 120 } |
125 return false; | 121 return false; |
126 } | 122 } |
127 #endif | 123 #endif |
128 | 124 |
129 inline void MouseOrFocusEventContext::setRelatedTarget(PassRefPtr<EventTarget> r
elatedTarget) | 125 inline void MouseOrFocusEventContext::setRelatedTarget(PassRefPtr<EventTarget> r
elatedTarget) |
130 { | 126 { |
131 ASSERT(!isUnreachableNode(relatedTarget.get())); | 127 ASSERT(!isUnreachableNode(relatedTarget.get())); |
132 m_relatedTarget = relatedTarget; | 128 m_relatedTarget = relatedTarget; |
133 } | 129 } |
134 | 130 |
135 } | 131 } |
136 | 132 |
137 #endif // EventContext_h | 133 #endif // EventContext_h |
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