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Diffstat (limited to 'V8Binding/binding/V8NPObject.cpp')
| -rw-r--r-- | V8Binding/binding/V8NPObject.cpp | 373 |
1 files changed, 0 insertions, 373 deletions
diff --git a/V8Binding/binding/V8NPObject.cpp b/V8Binding/binding/V8NPObject.cpp deleted file mode 100644 index dd9af69..0000000 --- a/V8Binding/binding/V8NPObject.cpp +++ /dev/null @@ -1,373 +0,0 @@ -/* -* 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 "V8NPObject.h" - -#include "HTMLPlugInElement.h" -#include "npruntime_priv.h" -#include "NPV8Object.h" -#include "V8CustomBinding.h" -#include "V8DOMMap.h" -#include "V8HTMLAppletElement.h" -#include "V8HTMLEmbedElement.h" -#include "V8HTMLObjectElement.h" -#include "V8NPUtils.h" -#include "V8Proxy.h" -#include "v8_helpers.h" -#include "wtf/OwnArrayPtr.h" - -using namespace WebCore; - -enum InvokeFunctionType { - INVOKE_METHOD = 1, - INVOKE_CONSTRUCT = 2, - INVOKE_DEFAULT = 3 -}; - -// FIXME: need comments. -// Params: holder could be HTMLEmbedElement or NPObject -static v8::Handle<v8::Value> npObjectInvokeImpl(const v8::Arguments& args, InvokeFunctionType functionId) -{ - NPObject* npObject; - - // These three types are subtypes of HTMLPlugInElement. - if (V8HTMLAppletElement::HasInstance(args.Holder()) || V8HTMLEmbedElement::HasInstance(args.Holder()) - || V8HTMLObjectElement::HasInstance(args.Holder())) { - // The holder object is a subtype of HTMLPlugInElement. - HTMLPlugInElement* element = V8Proxy::DOMWrapperToNode<HTMLPlugInElement>(args.Holder()); - ScriptInstance scriptInstance = element->getInstance(); - if (scriptInstance) - npObject = V8Proxy::ToNativeObject<NPObject>(V8ClassIndex::NPOBJECT, scriptInstance->instance()); - else - npObject = 0; - } else { - // The holder object is not a subtype of HTMLPlugInElement, it - // must be an NPObject which has three internal fields. - if (args.Holder()->InternalFieldCount() != V8Custom::kNPObjectInternalFieldCount) - return throwError("NPMethod called on non-NPObject", V8Proxy::REFERENCE_ERROR); - - npObject = V8Proxy::ToNativeObject<NPObject>(V8ClassIndex::NPOBJECT, args.Holder()); - } - - // Verify that our wrapper wasn't using a NPObject which - // has already been deleted. - if (!npObject || !_NPN_IsAlive(npObject)) - return throwError("NPObject deleted", V8Proxy::REFERENCE_ERROR); - - // Wrap up parameters. - int numArgs = args.Length(); - OwnArrayPtr<NPVariant> npArgs(new NPVariant[numArgs]); - - for (int i = 0; i < numArgs; i++) - convertV8ObjectToNPVariant(args[i], npObject, &npArgs[i]); - - NPVariant result; - VOID_TO_NPVARIANT(result); - - switch (functionId) { - case INVOKE_METHOD: - if (npObject->_class->invoke) { - v8::Handle<v8::String> functionName(v8::String::Cast(*args.Data())); - NPIdentifier identifier = getStringIdentifier(functionName); - npObject->_class->invoke(npObject, identifier, npArgs.get(), numArgs, &result); - } - break; - case INVOKE_CONSTRUCT: - if (npObject->_class->construct) - npObject->_class->construct(npObject, npArgs.get(), numArgs, &result); - break; - case INVOKE_DEFAULT: - if (npObject->_class->invokeDefault) - npObject->_class->invokeDefault(npObject, npArgs.get(), numArgs, &result); - break; - default: - break; - } - - for (int i=0; i < numArgs; i++) - NPN_ReleaseVariantValue(&npArgs[i]); - - // Unwrap return values. - v8::Handle<v8::Value> returnValue = convertNPVariantToV8Object(&result, npObject); - NPN_ReleaseVariantValue(&result); - - return returnValue; -} - - -v8::Handle<v8::Value> npObjectMethodHandler(const v8::Arguments& args) -{ - return npObjectInvokeImpl(args, INVOKE_METHOD); -} - - -v8::Handle<v8::Value> npObjectInvokeDefaultHandler(const v8::Arguments& args) -{ - if (args.IsConstructCall()) - return npObjectInvokeImpl(args, INVOKE_CONSTRUCT); - else - return npObjectInvokeImpl(args, INVOKE_DEFAULT); -} - - -static void weakTemplateCallback(v8::Persistent<v8::Value>, void* parameter); - -// NPIdentifier is PrivateIdentifier*. -static WeakReferenceMap<PrivateIdentifier, v8::FunctionTemplate> staticTemplateMap(&weakTemplateCallback); - -static void weakTemplateCallback(v8::Persistent<v8::Value> object, void* parameter) -{ - PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(parameter); - ASSERT(identifier); - ASSERT(staticTemplateMap.contains(identifier)); - - staticTemplateMap.forget(identifier); -} - - -static v8::Handle<v8::Value> npObjectGetProperty(v8::Local<v8::Object> self, - NPIdentifier identifier, - v8::Local<v8::Value> key) -{ - NPObject* npObject = V8Proxy::ToNativeObject<NPObject>(V8ClassIndex::NPOBJECT, self); - - // Verify that our wrapper wasn't using a NPObject which - // has already been deleted. - if (!npObject || !_NPN_IsAlive(npObject)) - return throwError("NPObject deleted", V8Proxy::REFERENCE_ERROR); - - - if (npObject->_class->hasProperty && npObject->_class->hasProperty(npObject, identifier) - && npObject->_class->getProperty) { - - NPVariant result; - VOID_TO_NPVARIANT(result); - if (!npObject->_class->getProperty(npObject, identifier, &result)) - return v8::Handle<v8::Value>(); - - v8::Handle<v8::Value> returnValue = convertNPVariantToV8Object(&result, npObject); - NPN_ReleaseVariantValue(&result); - return returnValue; - - } else if (key->IsString() && npObject->_class->hasMethod && npObject->_class->hasMethod(npObject, identifier)) { - PrivateIdentifier* id = static_cast<PrivateIdentifier*>(identifier); - v8::Persistent<v8::FunctionTemplate> functionTemplate = staticTemplateMap.get(id); - // Cache templates using identifier as the key. - if (functionTemplate.IsEmpty()) { - // Create a new template. - v8::Local<v8::FunctionTemplate> temp = v8::FunctionTemplate::New(); - temp->SetCallHandler(npObjectMethodHandler, key); - functionTemplate = v8::Persistent<v8::FunctionTemplate>::New(temp); - staticTemplateMap.set(id, functionTemplate); - } - - // FunctionTemplate caches function for each context. - v8::Local<v8::Function> v8Function = functionTemplate->GetFunction(); - v8Function->SetName(v8::Handle<v8::String>::Cast(key)); - return v8Function; - } - - return v8::Handle<v8::Value>(); -} - -v8::Handle<v8::Value> npObjectNamedPropertyGetter(v8::Local<v8::String> name, - const v8::AccessorInfo& info) -{ - NPIdentifier identifier = getStringIdentifier(name); - return npObjectGetProperty(info.Holder(), identifier, name); -} - -v8::Handle<v8::Value> npObjectIndexedPropertyGetter(uint32_t index, - const v8::AccessorInfo& info) -{ - NPIdentifier identifier = NPN_GetIntIdentifier(index); - return npObjectGetProperty(info.Holder(), identifier, v8::Number::New(index)); -} - -v8::Handle<v8::Value> npObjectGetNamedProperty(v8::Local<v8::Object> self, - v8::Local<v8::String> name) -{ - NPIdentifier identifier = getStringIdentifier(name); - return npObjectGetProperty(self, identifier, name); -} - -v8::Handle<v8::Value> npObjectGetIndexedProperty(v8::Local<v8::Object> self, - uint32_t index) -{ - NPIdentifier identifier = NPN_GetIntIdentifier(index); - return npObjectGetProperty(self, identifier, v8::Number::New(index)); -} - -static v8::Handle<v8::Value> npObjectSetProperty(v8::Local<v8::Object> self, - NPIdentifier identifier, - v8::Local<v8::Value> value) -{ - NPObject* npObject = V8Proxy::ToNativeObject<NPObject>(V8ClassIndex::NPOBJECT, self); - - // Verify that our wrapper wasn't using a NPObject which - // has already been deleted. - if (!npObject || !_NPN_IsAlive(npObject)) { - throwError("NPObject deleted", V8Proxy::REFERENCE_ERROR); - return value; // Intercepted, but an exception was thrown. - } - - if (npObject->_class->hasProperty && npObject->_class->hasProperty(npObject, identifier) - && npObject->_class->setProperty) { - - NPVariant npValue; - VOID_TO_NPVARIANT(npValue); - convertV8ObjectToNPVariant(value, npObject, &npValue); - bool success = npObject->_class->setProperty(npObject, identifier, &npValue); - NPN_ReleaseVariantValue(&npValue); - if (success) - return value; // Intercept the call. - } - return v8::Local<v8::Value>(); // Do not intercept the call. -} - - -v8::Handle<v8::Value> npObjectNamedPropertySetter(v8::Local<v8::String> name, - v8::Local<v8::Value> value, - const v8::AccessorInfo& info) -{ - NPIdentifier identifier = getStringIdentifier(name); - return npObjectSetProperty(info.Holder(), identifier, value); -} - - -v8::Handle<v8::Value> npObjectIndexedPropertySetter(uint32_t index, - v8::Local<v8::Value> value, - const v8::AccessorInfo& info) -{ - NPIdentifier identifier = NPN_GetIntIdentifier(index); - return npObjectSetProperty(info.Holder(), identifier, value); -} - -v8::Handle<v8::Value> npObjectSetNamedProperty(v8::Local<v8::Object> self, - v8::Local<v8::String> name, - v8::Local<v8::Value> value) -{ - NPIdentifier identifier = getStringIdentifier(name); - return npObjectSetProperty(self, identifier, value); -} - -v8::Handle<v8::Value> npObjectSetIndexedProperty(v8::Local<v8::Object> self, - uint32_t index, - v8::Local<v8::Value> value) -{ - NPIdentifier identifier = NPN_GetIntIdentifier(index); - return npObjectSetProperty(self, identifier, value); -} - - -static void weakNPObjectCallback(v8::Persistent<v8::Value>, void* parameter); - -static DOMWrapperMap<NPObject> staticNPObjectMap(&weakNPObjectCallback); - -static void weakNPObjectCallback(v8::Persistent<v8::Value> object, void* parameter) -{ - NPObject* npObject = static_cast<NPObject*>(parameter); - ASSERT(staticNPObjectMap.contains(npObject)); - ASSERT(npObject); - - // Must remove from our map before calling NPN_ReleaseObject(). - // NPN_ReleaseObject can call ForgetV8ObjectForNPObject, which - // uses the table as well. - staticNPObjectMap.forget(npObject); - - if (_NPN_IsAlive(npObject)) - NPN_ReleaseObject(npObject); -} - - -v8::Local<v8::Object> createV8ObjectForNPObject(NPObject* object, NPObject* root) -{ - static v8::Persistent<v8::FunctionTemplate> npObjectDesc; - - ASSERT(v8::Context::InContext()); - - // If this is a v8 object, just return it. - if (object->_class == npScriptObjectClass) { - V8NPObject* v8NPObject = reinterpret_cast<V8NPObject*>(object); - return v8::Local<v8::Object>::New(v8NPObject->v8Object); - } - - // If we've already wrapped this object, just return it. - if (staticNPObjectMap.contains(object)) - return v8::Local<v8::Object>::New(staticNPObjectMap.get(object)); - - // 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()) { - npObjectDesc = v8::Persistent<v8::FunctionTemplate>::New(v8::FunctionTemplate::New()); - npObjectDesc->InstanceTemplate()->SetInternalFieldCount(V8Custom::kNPObjectInternalFieldCount); - npObjectDesc->InstanceTemplate()->SetNamedPropertyHandler(npObjectNamedPropertyGetter, npObjectNamedPropertySetter); - npObjectDesc->InstanceTemplate()->SetIndexedPropertyHandler(npObjectIndexedPropertyGetter, npObjectIndexedPropertySetter); - npObjectDesc->InstanceTemplate()->SetCallAsFunctionHandler(npObjectInvokeDefaultHandler); - } - - v8::Handle<v8::Function> v8Function = npObjectDesc->GetFunction(); - v8::Local<v8::Object> value = SafeAllocation::NewInstance(v8Function); - - // If we were unable to allocate the instance, we avoid wrapping - // and registering the NP object. - if (value.IsEmpty()) - return value; - - WrapNPObject(value, object); - - // KJS retains the object as part of its wrapper (see Bindings::CInstance). - NPN_RetainObject(object); - - _NPN_RegisterObject(object, root); - - // Maintain a weak pointer for v8 so we can cleanup the object. - v8::Persistent<v8::Object> weakRef = v8::Persistent<v8::Object>::New(value); - staticNPObjectMap.set(object, weakRef); - - return value; -} - -void forgetV8ObjectForNPObject(NPObject* object) -{ - if (staticNPObjectMap.contains(object)) { - LOCK_V8; - v8::HandleScope scope; - v8::Persistent<v8::Object> handle(staticNPObjectMap.get(object)); - WebCore::V8Proxy::SetDOMWrapper(handle, WebCore::V8ClassIndex::NPOBJECT, 0); - staticNPObjectMap.forget(object); - NPN_ReleaseObject(object); - } -} |