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| 1 /* | 1 /* |
| 2 * Copyright (C) 2009 Google Inc. All rights reserved. | 2 * Copyright (C) 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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| 42 class Frame; | 42 class Frame; |
| 43 | 43 |
| 44 enum ListenerLookupType { | 44 enum ListenerLookupType { |
| 45 ListenerFindOnly, | 45 ListenerFindOnly, |
| 46 ListenerFindOrCreate, | 46 ListenerFindOrCreate, |
| 47 }; | 47 }; |
| 48 | 48 |
| 49 // This is a container for V8EventListener objects that uses hidden properties o
f v8::Object to speed up lookups. | 49 // This is a container for V8EventListener objects that uses hidden properties o
f v8::Object to speed up lookups. |
| 50 class V8EventListenerList { | 50 class V8EventListenerList { |
| 51 public: | 51 public: |
| 52 static PassRefPtr<V8EventListener> findWrapper(v8::Local<v8::Value> value, b
ool isAttribute) | 52 static PassRefPtr<V8EventListener> findWrapper(v8::Local<v8::Value> value, b
ool isAttribute, v8::Isolate* isolate) |
| 53 { | 53 { |
| 54 ASSERT(v8::Context::InContext()); | 54 ASSERT(v8::Context::InContext()); |
| 55 if (!value->IsObject()) | 55 if (!value->IsObject()) |
| 56 return 0; | 56 return 0; |
| 57 | 57 |
| 58 v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isAttribute); | 58 v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isAttribute,
isolate); |
| 59 return doFindWrapper(v8::Local<v8::Object>::Cast(value), wrapperProperty
); | 59 return doFindWrapper(v8::Local<v8::Object>::Cast(value), wrapperProperty
, isolate); |
| 60 } | 60 } |
| 61 | 61 |
| 62 template<typename WrapperType> | 62 template<typename WrapperType> |
| 63 static PassRefPtr<V8EventListener> findOrCreateWrapper(v8::Local<v8::Value>,
bool isAttribute, v8::Isolate*); | 63 static PassRefPtr<V8EventListener> findOrCreateWrapper(v8::Local<v8::Value>,
bool isAttribute, v8::Isolate*); |
| 64 | 64 |
| 65 static void clearWrapper(v8::Handle<v8::Object> listenerObject, bool isAttri
bute) | 65 static void clearWrapper(v8::Handle<v8::Object> listenerObject, bool isAttri
bute, v8::Isolate* isolate) |
| 66 { | 66 { |
| 67 v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isAttribute); | 67 v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isAttribute,
isolate); |
| 68 listenerObject->DeleteHiddenValue(wrapperProperty); | 68 listenerObject->DeleteHiddenValue(wrapperProperty); |
| 69 } | 69 } |
| 70 | 70 |
| 71 static PassRefPtr<EventListener> getEventListener(v8::Local<v8::Value>, bool
isAttribute, ListenerLookupType); | 71 static PassRefPtr<EventListener> getEventListener(v8::Local<v8::Value>, bool
isAttribute, ListenerLookupType); |
| 72 | 72 |
| 73 private: | 73 private: |
| 74 static V8EventListener* doFindWrapper(v8::Local<v8::Object> object, v8::Hand
le<v8::String> wrapperProperty) | 74 static V8EventListener* doFindWrapper(v8::Local<v8::Object> object, v8::Hand
le<v8::String> wrapperProperty, v8::Isolate* isolate) |
| 75 { | 75 { |
| 76 ASSERT(v8::Context::InContext()); | 76 ASSERT(v8::Context::InContext()); |
| 77 v8::HandleScope scope(v8::Isolate::GetCurrent()); | 77 v8::HandleScope scope(isolate); |
| 78 v8::Local<v8::Value> listener = object->GetHiddenValue(wrapperProperty); | 78 v8::Local<v8::Value> listener = object->GetHiddenValue(wrapperProperty); |
| 79 if (listener.IsEmpty()) | 79 if (listener.IsEmpty()) |
| 80 return 0; | 80 return 0; |
| 81 return static_cast<V8EventListener*>(v8::External::Cast(*listener)->Valu
e()); | 81 return static_cast<V8EventListener*>(v8::External::Cast(*listener)->Valu
e()); |
| 82 } | 82 } |
| 83 | 83 |
| 84 static inline v8::Handle<v8::String> getHiddenProperty(bool isAttribute) | 84 static inline v8::Handle<v8::String> getHiddenProperty(bool isAttribute, v8:
:Isolate* isolate) |
| 85 { | 85 { |
| 86 return isAttribute ? V8HiddenPropertyName::attributeListener() : V8Hidde
nPropertyName::listener(); | 86 return isAttribute ? V8HiddenPropertyName::attributeListener(isolate) :
V8HiddenPropertyName::listener(isolate); |
| 87 } | 87 } |
| 88 }; | 88 }; |
| 89 | 89 |
| 90 template<typename WrapperType> | 90 template<typename WrapperType> |
| 91 PassRefPtr<V8EventListener> V8EventListenerList::findOrCreateWrapper(v8::Local<v
8::Value> value, bool isAttribute, v8::Isolate* isolate) | 91 PassRefPtr<V8EventListener> V8EventListenerList::findOrCreateWrapper(v8::Local<v
8::Value> value, bool isAttribute, v8::Isolate* isolate) |
| 92 { | 92 { |
| 93 ASSERT(v8::Context::InContext()); | 93 ASSERT(v8::Context::InContext()); |
| 94 if (!value->IsObject()) | 94 if (!value->IsObject()) |
| 95 return 0; | 95 return 0; |
| 96 | 96 |
| 97 v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value); | 97 v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value); |
| 98 v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isAttribute); | 98 v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isAttribute, isol
ate); |
| 99 | 99 |
| 100 V8EventListener* wrapper = doFindWrapper(object, wrapperProperty); | 100 V8EventListener* wrapper = doFindWrapper(object, wrapperProperty, isolate); |
| 101 if (wrapper) | 101 if (wrapper) |
| 102 return wrapper; | 102 return wrapper; |
| 103 | 103 |
| 104 RefPtr<V8EventListener> wrapperPtr = WrapperType::create(object, isAttribute
, isolate); | 104 RefPtr<V8EventListener> wrapperPtr = WrapperType::create(object, isAttribute
, isolate); |
| 105 if (wrapperPtr) | 105 if (wrapperPtr) |
| 106 object->SetHiddenValue(wrapperProperty, v8::External::New(wrapperPtr.get
())); | 106 object->SetHiddenValue(wrapperProperty, v8::External::New(wrapperPtr.get
())); |
| 107 | 107 |
| 108 return wrapperPtr; | 108 return wrapperPtr; |
| 109 } | 109 } |
| 110 | 110 |
| 111 } // namespace WebCore | 111 } // namespace WebCore |
| 112 | 112 |
| 113 #endif // V8EventListenerList_h | 113 #endif // V8EventListenerList_h |
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