| /* |
| * Copyright (C) 2009 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 V8DOMWrapper_h |
| #define V8DOMWrapper_h |
| |
| #include "Event.h" |
| #include "IsolatedWorld.h" |
| #include "Node.h" |
| #include "NodeFilter.h" |
| #include "PlatformString.h" |
| #include "V8CustomXPathNSResolver.h" |
| #include "V8Event.h" |
| #include "V8Utilities.h" |
| #include "V8XPathNSResolver.h" |
| #include "WrapperTypeInfo.h" |
| #include "XPathNSResolver.h" |
| #include <v8.h> |
| |
| namespace WebCore { |
| |
| class DOMWindow; |
| class EventTarget; |
| class Frame; |
| class Node; |
| class V8Proxy; |
| class WorkerContext; |
| |
| enum ListenerLookupType { |
| ListenerFindOnly, |
| ListenerFindOrCreate, |
| }; |
| |
| class V8DOMWrapper { |
| public: |
| #ifndef NDEBUG |
| // Checks if a v8 value can be a DOM wrapper |
| static bool maybeDOMWrapper(v8::Handle<v8::Value>); |
| #endif |
| |
| // Sets contents of a DOM wrapper. |
| static void setDOMWrapper(v8::Handle<v8::Object> object, WrapperTypeInfo* type, void* cptr) |
| { |
| ASSERT(object->InternalFieldCount() >= 2); |
| object->SetPointerInInternalField(v8DOMWrapperObjectIndex, cptr); |
| object->SetPointerInInternalField(v8DOMWrapperTypeIndex, type); |
| } |
| |
| static v8::Handle<v8::Object> lookupDOMWrapper(v8::Handle<v8::FunctionTemplate> functionTemplate, v8::Handle<v8::Object> object) |
| { |
| return object.IsEmpty() ? object : object->FindInstanceInPrototypeChain(functionTemplate); |
| } |
| |
| static WrapperTypeInfo* domWrapperType(v8::Handle<v8::Object>); |
| |
| static v8::Handle<v8::Value> convertEventTargetToV8Object(PassRefPtr<EventTarget> eventTarget) |
| { |
| return convertEventTargetToV8Object(eventTarget.get()); |
| } |
| |
| static v8::Handle<v8::Value> convertEventTargetToV8Object(EventTarget*); |
| |
| static PassRefPtr<EventListener> getEventListener(v8::Local<v8::Value> value, bool isAttribute, ListenerLookupType lookup); |
| |
| #if ENABLE(XPATH) |
| // XPath-related utilities |
| static RefPtr<XPathNSResolver> getXPathNSResolver(v8::Handle<v8::Value> value, V8Proxy* proxy = 0); |
| #endif |
| |
| // Wrap JS node filter in C++. |
| static PassRefPtr<NodeFilter> wrapNativeNodeFilter(v8::Handle<v8::Value>); |
| |
| static v8::Local<v8::Function> getConstructorForContext(WrapperTypeInfo*, v8::Handle<v8::Context>); |
| static v8::Local<v8::Function> getConstructor(WrapperTypeInfo*, v8::Handle<v8::Value> objectPrototype); |
| static v8::Local<v8::Function> getConstructor(WrapperTypeInfo*, DOMWindow*); |
| #if ENABLE(WORKERS) |
| static v8::Local<v8::Function> getConstructor(WrapperTypeInfo*, WorkerContext*); |
| #endif |
| |
| // Set JS wrapper of a DOM object, the caller in charge of increase ref. |
| static void setJSWrapperForDOMObject(void*, v8::Persistent<v8::Object>); |
| static void setJSWrapperForActiveDOMObject(void*, v8::Persistent<v8::Object>); |
| static void setJSWrapperForDOMNode(Node*, v8::Persistent<v8::Object>); |
| |
| static bool isValidDOMObject(v8::Handle<v8::Value>); |
| |
| // Check whether a V8 value is a wrapper of type |classType|. |
| static bool isWrapperOfType(v8::Handle<v8::Value>, WrapperTypeInfo*); |
| |
| // Proper object lifetime support. |
| // |
| // Helper functions to make sure the child object stays alive |
| // while the parent is alive. Using the name more than once |
| // overwrites previous references making it possible to free |
| // old children. |
| static void setNamedHiddenReference(v8::Handle<v8::Object> parent, const char* name, v8::Handle<v8::Value> child); |
| static void setNamedHiddenWindowReference(Frame*, const char*, v8::Handle<v8::Value>); |
| |
| static v8::Local<v8::Object> instantiateV8Object(V8Proxy* proxy, WrapperTypeInfo*, void* impl); |
| |
| static v8::Handle<v8::Object> getWrapper(Node* node) |
| { |
| ASSERT(WTF::isMainThread()); |
| if (LIKELY(!IsolatedWorld::count())) { |
| v8::Persistent<v8::Object>* wrapper = node->wrapper(); |
| if (wrapper) |
| return *wrapper; |
| } |
| return getWrapperSlow(node); |
| } |
| |
| private: |
| static v8::Handle<v8::Object> getWrapperSlow(Node*); |
| }; |
| |
| } |
| |
| #endif // V8DOMWrapper_h |