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1 /* | 1 /* |
2 * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved. | 2 * Copyright (C) 2006, 2007, 2008, 2009 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 are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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61 : 0; | 61 : 0; |
62 } | 62 } |
63 | 63 |
64 static V8AbstractEventListener* cast(EventListener* listener) | 64 static V8AbstractEventListener* cast(EventListener* listener) |
65 { | 65 { |
66 return const_cast<V8AbstractEventListener*>(cast(const_cast<const EventL
istener*>(listener))); | 66 return const_cast<V8AbstractEventListener*>(cast(const_cast<const EventL
istener*>(listener))); |
67 } | 67 } |
68 | 68 |
69 // Implementation of EventListener interface. | 69 // Implementation of EventListener interface. |
70 | 70 |
71 virtual bool operator==(const EventListener& other) OVERRIDE { return this =
= &other; } | 71 virtual bool operator==(const EventListener& other) override { return this =
= &other; } |
72 | 72 |
73 virtual void handleEvent(ExecutionContext*, Event*) OVERRIDE; | 73 virtual void handleEvent(ExecutionContext*, Event*) override; |
74 | 74 |
75 virtual bool isLazy() const { return false; } | 75 virtual bool isLazy() const { return false; } |
76 | 76 |
77 // Returns the listener object, either a function or an object. | 77 // Returns the listener object, either a function or an object. |
78 v8::Local<v8::Object> getListenerObject(ExecutionContext* context) | 78 v8::Local<v8::Object> getListenerObject(ExecutionContext* context) |
79 { | 79 { |
80 // prepareListenerObject can potentially deref this event listener | 80 // prepareListenerObject can potentially deref this event listener |
81 // as it may attempt to compile a function (lazy event listener), get an
error | 81 // as it may attempt to compile a function (lazy event listener), get an
error |
82 // and invoke onerror callback which can execute arbitrary JS code. | 82 // and invoke onerror callback which can execute arbitrary JS code. |
83 // Protect this event listener to keep it alive. | 83 // Protect this event listener to keep it alive. |
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101 bool hasExistingListenerObject() | 101 bool hasExistingListenerObject() |
102 { | 102 { |
103 return !m_listener.isEmpty(); | 103 return !m_listener.isEmpty(); |
104 } | 104 } |
105 | 105 |
106 void clearListenerObject() | 106 void clearListenerObject() |
107 { | 107 { |
108 m_listener.clear(); | 108 m_listener.clear(); |
109 } | 109 } |
110 | 110 |
111 virtual bool belongsToTheCurrentWorld() const OVERRIDE FINAL; | 111 virtual bool belongsToTheCurrentWorld() const override final; |
112 v8::Isolate* isolate() const { return m_isolate; } | 112 v8::Isolate* isolate() const { return m_isolate; } |
113 virtual DOMWrapperWorld& world() const { return scriptState()->world(); } | 113 virtual DOMWrapperWorld& world() const { return scriptState()->world(); } |
114 ScriptState* scriptState() const | 114 ScriptState* scriptState() const |
115 { | 115 { |
116 ASSERT(m_scriptState); | 116 ASSERT(m_scriptState); |
117 return m_scriptState.get(); | 117 return m_scriptState.get(); |
118 } | 118 } |
119 void setScriptState(ScriptState* scriptState) { m_scriptState = scriptState;
} | 119 void setScriptState(ScriptState* scriptState) { m_scriptState = scriptState;
} |
120 | 120 |
121 protected: | 121 protected: |
122 V8AbstractEventListener(bool isAttribute, ScriptState*); | 122 V8AbstractEventListener(bool isAttribute, ScriptState*); |
123 V8AbstractEventListener(bool isAttribute, v8::Isolate*); | 123 V8AbstractEventListener(bool isAttribute, v8::Isolate*); |
124 | 124 |
125 virtual void prepareListenerObject(ExecutionContext*) { } | 125 virtual void prepareListenerObject(ExecutionContext*) { } |
126 | 126 |
127 void setListenerObject(v8::Handle<v8::Object>); | 127 void setListenerObject(v8::Handle<v8::Object>); |
128 | 128 |
129 void invokeEventHandler(Event*, v8::Local<v8::Value> jsEvent); | 129 void invokeEventHandler(Event*, v8::Local<v8::Value> jsEvent); |
130 | 130 |
131 // Get the receiver object to use for event listener call. | 131 // Get the receiver object to use for event listener call. |
132 v8::Local<v8::Object> getReceiverObject(Event*); | 132 v8::Local<v8::Object> getReceiverObject(Event*); |
133 | 133 |
134 private: | 134 private: |
135 // Implementation of EventListener function. | 135 // Implementation of EventListener function. |
136 virtual bool virtualisAttribute() const OVERRIDE { return m_isAttribute; } | 136 virtual bool virtualisAttribute() const override { return m_isAttribute; } |
137 | 137 |
138 virtual v8::Local<v8::Value> callListenerFunction(v8::Handle<v8::Value> jsev
ent, Event*) = 0; | 138 virtual v8::Local<v8::Value> callListenerFunction(v8::Handle<v8::Value> jsev
ent, Event*) = 0; |
139 | 139 |
140 virtual bool shouldPreventDefault(v8::Local<v8::Value> returnValue); | 140 virtual bool shouldPreventDefault(v8::Local<v8::Value> returnValue); |
141 | 141 |
142 static void setWeakCallback(const v8::WeakCallbackData<v8::Object, V8Abstrac
tEventListener>&); | 142 static void setWeakCallback(const v8::WeakCallbackData<v8::Object, V8Abstrac
tEventListener>&); |
143 | 143 |
144 ScopedPersistent<v8::Object> m_listener; | 144 ScopedPersistent<v8::Object> m_listener; |
145 | 145 |
146 // Indicates if this is an HTML type listener. | 146 // Indicates if this is an HTML type listener. |
147 bool m_isAttribute; | 147 bool m_isAttribute; |
148 | 148 |
149 // For V8LazyEventListener, m_scriptState can be 0 until V8LazyEventListener
is actually used. | 149 // For V8LazyEventListener, m_scriptState can be 0 until V8LazyEventListener
is actually used. |
150 // m_scriptState is set lazily because V8LazyEventListener doesn't know the
associated frame | 150 // m_scriptState is set lazily because V8LazyEventListener doesn't know the
associated frame |
151 // until the listener is actually used. | 151 // until the listener is actually used. |
152 RefPtr<ScriptState> m_scriptState; | 152 RefPtr<ScriptState> m_scriptState; |
153 v8::Isolate* m_isolate; | 153 v8::Isolate* m_isolate; |
154 }; | 154 }; |
155 | 155 |
156 } // namespace blink | 156 } // namespace blink |
157 | 157 |
158 #endif // V8AbstractEventListener_h | 158 #endif // V8AbstractEventListener_h |
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