Moved files under Source/bindings/v8 to Source/bindings/core/v8.

Source/bindings/v8/V8NPObject.cpp

-/*
-* Copyright (C) 2006, 2007, 2008, 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.
-*/
-
-#include "config.h"
-
-#include "bindings/v8/V8NPObject.h"
-
-#include "bindings/core/v8/V8HTMLAppletElement.h"
-#include "bindings/core/v8/V8HTMLEmbedElement.h"
-#include "bindings/core/v8/V8HTMLObjectElement.h"
-#include "bindings/v8/NPV8Object.h"
-#include "bindings/v8/V8Binding.h"
-#include "bindings/v8/V8NPUtils.h"
-#include "bindings/v8/V8ObjectConstructor.h"
-#include "bindings/v8/V8PersistentValueMap.h"
-#include "bindings/v8/npruntime_impl.h"
-#include "bindings/v8/npruntime_priv.h"
-#include "core/html/HTMLPlugInElement.h"
-#include "v8-util.h"
-#include "wtf/OwnPtr.h"
-
-namespace WebCore {
-
-enum InvokeFunctionType {
-    InvokeMethod = 1,
-    InvokeConstruct = 2,
-    InvokeDefault = 3
-};
-
-struct IdentifierRep {
-    int number() const { return m_isString ? 0 : m_value.m_number; }
-    const char* string() const { return m_isString ? m_value.m_string : 0; }
-
-    union {
-        const char* m_string;
-        int m_number;
-    } m_value;
-    bool m_isString;
-};
-
-// FIXME: need comments.
-// Params: holder could be HTMLEmbedElement or NPObject
-static void npObjectInvokeImpl(const v8::FunctionCallbackInfo<v8::Value>& info, InvokeFunctionType functionId)
-{
-    NPObject* npObject;
-    v8::Isolate* isolate = info.GetIsolate();
-
-    // These three types are subtypes of HTMLPlugInElement.
-    HTMLPlugInElement* element = V8HTMLAppletElement::toNativeWithTypeCheck(isolate, info.Holder());
-    if (!element) {
-        element = V8HTMLEmbedElement::toNativeWithTypeCheck(isolate, info.Holder());
-        if (!element) {
-            element = V8HTMLObjectElement::toNativeWithTypeCheck(isolate, info.Holder());
-        }
-    }
-    if (element) {
-        if (RefPtr<SharedPersistent<v8::Object> > wrapper = element->pluginWrapper()) {
-            v8::HandleScope handleScope(isolate);
-            npObject = v8ObjectToNPObject(wrapper->newLocal(isolate));
-        } else
-            npObject = 0;
-    } else {
-        // The holder object is not a subtype of HTMLPlugInElement, it must be an NPObject which has three
-        // internal fields.
-        if (info.Holder()->InternalFieldCount() != npObjectInternalFieldCount) {
-            throwError(v8ReferenceError, "NPMethod called on non-NPObject", info.GetIsolate());
-            return;
-        }
-
-        npObject = v8ObjectToNPObject(info.Holder());
-    }
-
-    // Verify that our wrapper wasn't using a NPObject which has already been deleted.
-    if (!npObject || !_NPN_IsAlive(npObject)) {
-        throwError(v8ReferenceError, "NPObject deleted", isolate);
-        return;
-    }
-
-    // Wrap up parameters.
-    int numArgs = info.Length();
-    OwnPtr<NPVariant[]> npArgs = adoptArrayPtr(new NPVariant[numArgs]);
-
-    for (int i = 0; i < numArgs; i++)
-        convertV8ObjectToNPVariant(info[i], npObject, &npArgs[i], isolate);
-
-    NPVariant result;
-    VOID_TO_NPVARIANT(result);
-
-    bool retval = true;
-    switch (functionId) {
-    case InvokeMethod:
-        if (npObject->_class->invoke) {
-            v8::Handle<v8::String> functionName = v8::Handle<v8::String>::Cast(info.Data());
-            NPIdentifier identifier = getStringIdentifier(functionName);
-            retval = npObject->_class->invoke(npObject, identifier, npArgs.get(), numArgs, &result);
-        }
-        break;
-    case InvokeConstruct:
-        if (npObject->_class->construct)
-            retval = npObject->_class->construct(npObject, npArgs.get(), numArgs, &result);
-        break;
-    case InvokeDefault:
-        if (npObject->_class->invokeDefault)
-            retval = npObject->_class->invokeDefault(npObject, npArgs.get(), numArgs, &result);
-        break;
-    default:
-        break;
-    }
-
-    if (!retval)
-        throwError(v8GeneralError, "Error calling method on NPObject.", isolate);
-
-    for (int i = 0; i < numArgs; i++)
-        _NPN_ReleaseVariantValue(&npArgs[i]);
-
-    // Unwrap return values.
-    v8::Handle<v8::Value> returnValue;
-    if (_NPN_IsAlive(npObject))
-        returnValue = convertNPVariantToV8Object(&result, npObject, isolate);
-    _NPN_ReleaseVariantValue(&result);
-
-    v8SetReturnValue(info, returnValue);
-}
-
-
-void npObjectMethodHandler(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    return npObjectInvokeImpl(info, InvokeMethod);
-}
-
-
-void npObjectInvokeDefaultHandler(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    if (info.IsConstructCall()) {
-        npObjectInvokeImpl(info, InvokeConstruct);
-        return;
-    }
-
-    npObjectInvokeImpl(info, InvokeDefault);
-}
-
-class V8TemplateMapTraits : public V8PersistentValueMapTraits<PrivateIdentifier*, v8::FunctionTemplate, true> {
-public:
-    typedef v8::PersistentValueMap<PrivateIdentifier*, v8::FunctionTemplate, V8TemplateMapTraits> MapType;
-    typedef PrivateIdentifier WeakCallbackDataType;
-
-    static WeakCallbackDataType* WeakCallbackParameter(MapType* map, PrivateIdentifier* key, const v8::Local<v8::FunctionTemplate>& value)
-    {
-        return key;
-    }
-
-    static void DisposeCallbackData(WeakCallbackDataType* callbackData) { }
-
-    static MapType* MapFromWeakCallbackData(
-        const v8::WeakCallbackData<v8::FunctionTemplate, WeakCallbackDataType>&);
-
-    static PrivateIdentifier* KeyFromWeakCallbackData(
-        const v8::WeakCallbackData<v8::FunctionTemplate, WeakCallbackDataType>& data)
-    {
-        return data.GetParameter();
-    }
-
-    // Dispose traits:
-    static void Dispose(v8::Isolate* isolate, v8::UniquePersistent<v8::FunctionTemplate> value, PrivateIdentifier* key) { }
-};
-
-
-class V8NPTemplateMap {
-public:
-    // NPIdentifier is PrivateIdentifier*.
-    typedef v8::PersistentValueMap<PrivateIdentifier*, v8::FunctionTemplate, V8TemplateMapTraits> MapType;
-
-    v8::Local<v8::FunctionTemplate> get(PrivateIdentifier* key)
-    {
-        return m_map.Get(key);
-    }
-
-    void set(PrivateIdentifier* key, v8::Handle<v8::FunctionTemplate> handle)
-    {
-        ASSERT(!m_map.Contains(key));
-        m_map.Set(key, handle);
-    }
-
-    static V8NPTemplateMap& sharedInstance(v8::Isolate* isolate)
-    {
-        DEFINE_STATIC_LOCAL(V8NPTemplateMap, map, (isolate));
-        ASSERT(isolate == map.m_map.GetIsolate());
-        return map;
-    }
-
-    friend class V8TemplateMapTraits;
-
-private:
-    explicit V8NPTemplateMap(v8::Isolate* isolate)
-        : m_map(isolate)
-    {
-    }
-
-    MapType m_map;
-};
-
-V8TemplateMapTraits::MapType* V8TemplateMapTraits::MapFromWeakCallbackData(const v8::WeakCallbackData<v8::FunctionTemplate, WeakCallbackDataType>& data)
-{
-    return &V8NPTemplateMap::sharedInstance(data.GetIsolate()).m_map;
-}
-
-
-static v8::Handle<v8::Value> npObjectGetProperty(v8::Local<v8::Object> self, NPIdentifier identifier, v8::Local<v8::Value> key, v8::Isolate* isolate)
-{
-    NPObject* npObject = v8ObjectToNPObject(self);
-
-    // Verify that our wrapper wasn't using a NPObject which
-    // has already been deleted.
-    if (!npObject || !_NPN_IsAlive(npObject))
-        return throwError(v8ReferenceError, "NPObject deleted", isolate);
-
-
-    if (npObject->_class->hasProperty && npObject->_class->getProperty && npObject->_class->hasProperty(npObject, identifier)) {
-        if (!_NPN_IsAlive(npObject))
-            return throwError(v8ReferenceError, "NPObject deleted", isolate);
-
-        NPVariant result;
-        VOID_TO_NPVARIANT(result);
-        if (!npObject->_class->getProperty(npObject, identifier, &result))
-            return v8Undefined();
-
-        v8::Handle<v8::Value> returnValue;
-        if (_NPN_IsAlive(npObject))
-            returnValue = convertNPVariantToV8Object(&result, npObject, isolate);
-        _NPN_ReleaseVariantValue(&result);
-        return returnValue;
-
-    }
-
-    if (!_NPN_IsAlive(npObject))
-        return throwError(v8ReferenceError, "NPObject deleted", isolate);
-
-    if (key->IsString() && npObject->_class->hasMethod && npObject->_class->hasMethod(npObject, identifier)) {
-        if (!_NPN_IsAlive(npObject))
-            return throwError(v8ReferenceError, "NPObject deleted", isolate);
-
-        PrivateIdentifier* id = static_cast<PrivateIdentifier*>(identifier);
-        v8::Local<v8::FunctionTemplate> functionTemplate = V8NPTemplateMap::sharedInstance(isolate).get(id);
-        // Cache templates using identifier as the key.
-        if (functionTemplate.IsEmpty()) {
-            // Create a new template.
-            functionTemplate = v8::FunctionTemplate::New(isolate);
-            functionTemplate->SetCallHandler(npObjectMethodHandler, key);
-            V8NPTemplateMap::sharedInstance(isolate).set(id, functionTemplate);
-        }
-        v8::Local<v8::Function> v8Function = functionTemplate->GetFunction();
-        v8Function->SetName(v8::Handle<v8::String>::Cast(key));
-        return v8Function;
-    }
-
-    return v8Undefined();
-}
-
-void npObjectNamedPropertyGetter(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    v8SetReturnValue(info, npObjectGetProperty(info.Holder(), identifier, name, info.GetIsolate()));
-}
-
-void npObjectIndexedPropertyGetter(uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = _NPN_GetIntIdentifier(index);
-    v8SetReturnValue(info, npObjectGetProperty(info.Holder(), identifier, v8::Number::New(info.GetIsolate(), index), info.GetIsolate()));
-}
-
-void npObjectGetNamedProperty(v8::Local<v8::Object> self, v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    v8SetReturnValue(info, npObjectGetProperty(self, identifier, name, info.GetIsolate()));
-}
-
-void npObjectGetIndexedProperty(v8::Local<v8::Object> self, uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = _NPN_GetIntIdentifier(index);
-    v8SetReturnValue(info, npObjectGetProperty(self, identifier, v8::Number::New(info.GetIsolate(), index), info.GetIsolate()));
-}
-
-void npObjectQueryProperty(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Integer>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    if (npObjectGetProperty(info.Holder(), identifier, name, info.GetIsolate()).IsEmpty())
-        return;
-    v8SetReturnValueInt(info, 0);
-}
-
-static v8::Handle<v8::Value> npObjectSetProperty(v8::Local<v8::Object> self, NPIdentifier identifier, v8::Local<v8::Value> value, v8::Isolate* isolate)
-{
-    NPObject* npObject = v8ObjectToNPObject(self);
-
-    // Verify that our wrapper wasn't using a NPObject which has already been deleted.
-    if (!npObject || !_NPN_IsAlive(npObject)) {
-        throwError(v8ReferenceError, "NPObject deleted", isolate);
-        return value;  // Intercepted, but an exception was thrown.
-    }
-
-    if (npObject->_class->hasProperty && npObject->_class->setProperty && npObject->_class->hasProperty(npObject, identifier)) {
-        if (!_NPN_IsAlive(npObject))
-            return throwError(v8ReferenceError, "NPObject deleted", isolate);
-
-        NPVariant npValue;
-        VOID_TO_NPVARIANT(npValue);
-        convertV8ObjectToNPVariant(value, npObject, &npValue, isolate);
-        bool success = npObject->_class->setProperty(npObject, identifier, &npValue);
-        _NPN_ReleaseVariantValue(&npValue);
-        if (success)
-            return value; // Intercept the call.
-    }
-    return v8Undefined();
-}
-
-
-void npObjectNamedPropertySetter(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    v8SetReturnValue(info, npObjectSetProperty(info.Holder(), identifier, value, info.GetIsolate()));
-}
-
-
-void npObjectIndexedPropertySetter(uint32_t index, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = _NPN_GetIntIdentifier(index);
-    v8SetReturnValue(info, npObjectSetProperty(info.Holder(), identifier, value, info.GetIsolate()));
-}
-
-void npObjectSetNamedProperty(v8::Local<v8::Object> self, v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = getStringIdentifier(name);
-    v8SetReturnValue(info, npObjectSetProperty(self, identifier, value, info.GetIsolate()));
-}
-
-void npObjectSetIndexedProperty(v8::Local<v8::Object> self, uint32_t index, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    NPIdentifier identifier = _NPN_GetIntIdentifier(index);
-    v8SetReturnValue(info, npObjectSetProperty(self, identifier, value, info.GetIsolate()));
-}
-
-void npObjectPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info, bool namedProperty)
-{
-    NPObject* npObject = v8ObjectToNPObject(info.Holder());
-
-    // Verify that our wrapper wasn't using a NPObject which
-    // has already been deleted.
-    if (!npObject || !_NPN_IsAlive(npObject))
-        throwError(v8ReferenceError, "NPObject deleted", info.GetIsolate());
-
-    if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate) {
-        uint32_t count;
-        NPIdentifier* identifiers;
-        if (npObject->_class->enumerate(npObject, &identifiers, &count)) {
-            uint32_t propertiesCount = 0;
-            for (uint32_t i = 0; i < count; ++i) {
-                IdentifierRep* identifier = static_cast<IdentifierRep*>(identifiers[i]);
-                if (namedProperty == identifier->m_isString)
-                    ++propertiesCount;
-            }
-            v8::Handle<v8::Array> properties = v8::Array::New(info.GetIsolate(), propertiesCount);
-            for (uint32_t i = 0, propertyIndex = 0; i < count; ++i) {
-                IdentifierRep* identifier = static_cast<IdentifierRep*>(identifiers[i]);
-                if (namedProperty == identifier->m_isString) {
-                    ASSERT(propertyIndex < propertiesCount);
-                    if (namedProperty)
-                        properties->Set(v8::Integer::New(info.GetIsolate(), propertyIndex++), v8AtomicString(info.GetIsolate(), identifier->string()));
-                    else
-                        properties->Set(v8::Integer::New(info.GetIsolate(), propertyIndex++), v8::Integer::New(info.GetIsolate(), identifier->number()));
-                }
-            }
-
-            v8SetReturnValue(info, properties);
-            return;
-        }
-    }
-}
-
-void npObjectNamedPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info)
-{
-    npObjectPropertyEnumerator(info, true);
-}
-
-void npObjectIndexedPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info)
-{
-    npObjectPropertyEnumerator(info, false);
-}
-
-static DOMWrapperMap<NPObject>& staticNPObjectMap()
-{
-    DEFINE_STATIC_LOCAL(DOMWrapperMap<NPObject>, npObjectMap, (v8::Isolate::GetCurrent()));
-    return npObjectMap;
-}
-
-template <>
-inline void DOMWrapperMap<NPObject>::PersistentValueMapTraits::Dispose(
-    v8::Isolate* isolate,
-    v8::UniquePersistent<v8::Object> value,
-    NPObject* npObject)
-{
-    ASSERT(npObject);
-    if (_NPN_IsAlive(npObject))
-        _NPN_ReleaseObject(npObject);
-}
-
-v8::Local<v8::Object> createV8ObjectForNPObject(NPObject* object, NPObject* root, v8::Isolate* isolate)
-{
-    static v8::Eternal<v8::FunctionTemplate> npObjectDesc;
-
-    ASSERT(isolate->InContext());
-
-    // If this is a v8 object, just return it.
-    V8NPObject* v8NPObject = npObjectToV8NPObject(object);
-    if (v8NPObject)
-        return v8::Local<v8::Object>::New(isolate, v8NPObject->v8Object);
-
-    // If we've already wrapped this object, just return it.
-    v8::Handle<v8::Object> wrapper = staticNPObjectMap().newLocal(object, isolate);
-    if (!wrapper.IsEmpty())
-        return wrapper;
-
-    // FIXME: we should create a Wrapper type as a subclass of JSObject. It has two internal fields, field 0 is the wrapped
-    // pointer, and field 1 is the type. There should be an api function that returns unused type id. The same Wrapper type
-    // can be used by DOM bindings.
-    if (npObjectDesc.IsEmpty()) {
-        v8::Local<v8::FunctionTemplate> templ = v8::FunctionTemplate::New(isolate);
-        templ->InstanceTemplate()->SetInternalFieldCount(npObjectInternalFieldCount);
-        templ->InstanceTemplate()->SetNamedPropertyHandler(npObjectNamedPropertyGetter, npObjectNamedPropertySetter, npObjectQueryProperty, 0, npObjectNamedPropertyEnumerator);
-        templ->InstanceTemplate()->SetIndexedPropertyHandler(npObjectIndexedPropertyGetter, npObjectIndexedPropertySetter, 0, 0, npObjectIndexedPropertyEnumerator);
-        templ->InstanceTemplate()->SetCallAsFunctionHandler(npObjectInvokeDefaultHandler);
-        npObjectDesc.Set(isolate, templ);
-    }
-
-    // FIXME: Move staticNPObjectMap() to DOMDataStore.
-    // Use V8DOMWrapper::createWrapper() and
-    // V8DOMWrapper::associateObjectWithWrapper()
-    // to create a wrapper object.
-    v8::Handle<v8::Function> v8Function = npObjectDesc.Get(isolate)->GetFunction();
-    v8::Local<v8::Object> value = V8ObjectConstructor::newInstance(isolate, v8Function);
-    if (value.IsEmpty())
-        return value;
-
-    V8DOMWrapper::setNativeInfo(value, npObjectTypeInfo(), object);
-
-    // KJS retains the object as part of its wrapper (see Bindings::CInstance).
-    _NPN_RetainObject(object);
-    _NPN_RegisterObject(object, root);
-
-    WrapperConfiguration configuration = buildWrapperConfiguration(object, WrapperConfiguration::Dependent);
-    staticNPObjectMap().set(object, value, configuration);
-    ASSERT(V8DOMWrapper::isDOMWrapper(value));
-    return value;
-}
-
-void forgetV8ObjectForNPObject(NPObject* object)
-{
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    v8::HandleScope scope(isolate);
-    v8::Handle<v8::Object> wrapper = staticNPObjectMap().newLocal(object, isolate);
-    if (!wrapper.IsEmpty()) {
-        V8DOMWrapper::clearNativeInfo(wrapper, npObjectTypeInfo());
-        staticNPObjectMap().removeAndDispose(object);
-        _NPN_ReleaseObject(object);
-    }
-}
-
-} // namespace WebCore