| /* |
| * Copyright (C) 2012 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "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 THE COPYRIGHT |
| * OWNER 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. |
| */ |
| |
| #ifndef V8PerContextData_h |
| #define V8PerContextData_h |
| |
| #include "bindings/v8/CustomElementBinding.h" |
| #include "bindings/v8/ScopedPersistent.h" |
| #include "bindings/v8/UnsafePersistent.h" |
| #include "bindings/v8/V8DOMActivityLogger.h" |
| #include "bindings/v8/WrapperTypeInfo.h" |
| #include <v8.h> |
| #include "wtf/HashMap.h" |
| #include "wtf/PassOwnPtr.h" |
| #include "wtf/Vector.h" |
| #include "wtf/text/AtomicString.h" |
| #include "wtf/text/AtomicStringHash.h" |
| |
| namespace WebCore { |
| |
| class CustomElementDefinition; |
| struct V8NPObject; |
| typedef WTF::Vector<V8NPObject*> V8NPObjectVector; |
| typedef WTF::HashMap<int, V8NPObjectVector> V8NPObjectMap; |
| |
| enum V8ContextEmbedderDataField { |
| v8ContextDebugIdIndex, |
| v8ContextPerContextDataIndex, |
| v8ContextIsolatedWorld, |
| // Rather than adding more embedder data fields to v8::Context, |
| // consider adding the data to V8PerContextData instead. |
| }; |
| |
| class V8PerContextData { |
| public: |
| static PassOwnPtr<V8PerContextData> create(v8::Handle<v8::Context> context) |
| { |
| return adoptPtr(new V8PerContextData(context)); |
| } |
| |
| ~V8PerContextData() |
| { |
| dispose(); |
| } |
| |
| bool init(); |
| |
| static V8PerContextData* from(v8::Handle<v8::Context> context) |
| { |
| return static_cast<V8PerContextData*>(context->GetAlignedPointerFromEmbedderData(v8ContextPerContextDataIndex)); |
| } |
| |
| // To create JS Wrapper objects, we create a cache of a 'boiler plate' |
| // object, and then simply Clone that object each time we need a new one. |
| // This is faster than going through the full object creation process. |
| v8::Local<v8::Object> createWrapperFromCache(WrapperTypeInfo* type) |
| { |
| UnsafePersistent<v8::Object> boilerplate = m_wrapperBoilerplates.get(type); |
| return !boilerplate.isEmpty() ? boilerplate.newLocal(v8::Isolate::GetCurrent())->Clone() : createWrapperFromCacheSlowCase(type); |
| } |
| |
| v8::Local<v8::Function> constructorForType(WrapperTypeInfo* type) |
| { |
| UnsafePersistent<v8::Function> function = m_constructorMap.get(type); |
| if (!function.isEmpty()) |
| return function.newLocal(v8::Isolate::GetCurrent()); |
| return constructorForTypeSlowCase(type); |
| } |
| |
| v8::Local<v8::Object> prototypeForType(WrapperTypeInfo*); |
| |
| V8NPObjectMap* v8NPObjectMap() |
| { |
| return &m_v8NPObjectMap; |
| } |
| |
| V8DOMActivityLogger* activityLogger() |
| { |
| return m_activityLogger; |
| } |
| |
| void setActivityLogger(V8DOMActivityLogger* logger) |
| { |
| m_activityLogger = logger; |
| } |
| |
| void addCustomElementBinding(CustomElementDefinition*, PassOwnPtr<CustomElementBinding>); |
| void clearCustomElementBinding(CustomElementDefinition*); |
| CustomElementBinding* customElementBinding(CustomElementDefinition*); |
| |
| private: |
| explicit V8PerContextData(v8::Handle<v8::Context> context) |
| : m_activityLogger(0) |
| , m_isolate(v8::Isolate::GetCurrent()) |
| , m_context(m_isolate, context) |
| , m_customElementBindings(adoptPtr(new CustomElementBindingMap())) |
| { |
| } |
| |
| void dispose(); |
| |
| v8::Local<v8::Object> createWrapperFromCacheSlowCase(WrapperTypeInfo*); |
| v8::Local<v8::Function> constructorForTypeSlowCase(WrapperTypeInfo*); |
| |
| // For each possible type of wrapper, we keep a boilerplate object. |
| // The boilerplate is used to create additional wrappers of the same type. |
| typedef WTF::HashMap<WrapperTypeInfo*, UnsafePersistent<v8::Object> > WrapperBoilerplateMap; |
| WrapperBoilerplateMap m_wrapperBoilerplates; |
| |
| typedef WTF::HashMap<WrapperTypeInfo*, UnsafePersistent<v8::Function> > ConstructorMap; |
| ConstructorMap m_constructorMap; |
| |
| V8NPObjectMap m_v8NPObjectMap; |
| // We cache a pointer to the V8DOMActivityLogger associated with the world |
| // corresponding to this context. The ownership of the pointer is retained |
| // by the DOMActivityLoggerMap in DOMWrapperWorld. |
| V8DOMActivityLogger* m_activityLogger; |
| v8::Isolate* m_isolate; |
| v8::Persistent<v8::Context> m_context; |
| ScopedPersistent<v8::Value> m_errorPrototype; |
| |
| typedef WTF::HashMap<CustomElementDefinition*, OwnPtr<CustomElementBinding> > CustomElementBindingMap; |
| OwnPtr<CustomElementBindingMap> m_customElementBindings; |
| }; |
| |
| class V8PerContextDebugData { |
| public: |
| static bool setContextDebugData(v8::Handle<v8::Context>, const char* worldName, int debugId); |
| static int contextDebugId(v8::Handle<v8::Context>); |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // V8PerContextData_h |