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/*
* 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*);
static void setHiddenReference(v8::Handle<v8::Object> parent, v8::Handle<v8::Value> child);
// Set hidden references in a DOMWindow object of a frame.
static void setHiddenWindowReference(Frame*, 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
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