1 /* 2 * Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2007, 2008, 2009 Google, Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include "config.h" 28 29 #include "bindings/v8/NPV8Object.h" 30 31 #include "bindings/v8/ScriptController.h" 32 #include "bindings/v8/ScriptSourceCode.h" 33 #include "bindings/v8/V8Binding.h" 34 #include "bindings/v8/V8GCController.h" 35 #include "bindings/v8/V8NPUtils.h" 36 #include "bindings/v8/V8ObjectConstructor.h" 37 #include "bindings/v8/V8ScriptRunner.h" 38 #include "bindings/v8/WrapperTypeInfo.h" 39 #include "bindings/v8/npruntime_impl.h" 40 #include "bindings/v8/npruntime_priv.h" 41 #include "core/frame/LocalDOMWindow.h" 42 #include "core/frame/LocalFrame.h" 43 #include "platform/UserGestureIndicator.h" 44 #include "wtf/OwnPtr.h" 45 46 #include <stdio.h> 47 #include "wtf/StringExtras.h" 48 #include "wtf/text/WTFString.h" 49 50 using namespace WebCore; 51 52 namespace WebCore { 53 54 const WrapperTypeInfo* npObjectTypeInfo() 55 { 56 static const WrapperTypeInfo typeInfo = { gin::kEmbedderBlink, 0, 0, 0, 0, 0, 0, 0, WrapperTypeObjectPrototype, RefCountedObject }; 57 return &typeInfo; 58 } 59 60 // FIXME: Comments on why use malloc and free. 61 static NPObject* allocV8NPObject(NPP, NPClass*) 62 { 63 return static_cast<NPObject*>(malloc(sizeof(V8NPObject))); 64 } 65 66 static void freeV8NPObject(NPObject* npObject) 67 { 68 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 69 disposeUnderlyingV8Object(npObject, v8::Isolate::GetCurrent()); 70 free(v8NpObject); 71 } 72 73 static NPClass V8NPObjectClass = { 74 NP_CLASS_STRUCT_VERSION, 75 allocV8NPObject, 76 freeV8NPObject, 77 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 78 }; 79 80 static ScriptState* mainWorldScriptState(v8::Isolate* isolate, NPP npp, NPObject* npObject) 81 { 82 ASSERT(npObject->_class == &V8NPObjectClass); 83 V8NPObject* object = reinterpret_cast<V8NPObject*>(npObject); 84 LocalDOMWindow* window = object->rootObject; 85 if (!window || !window->isCurrentlyDisplayedInFrame()) 86 return 0; 87 v8::HandleScope handleScope(isolate); 88 v8::Handle<v8::Context> context = toV8Context(object->rootObject->frame(), DOMWrapperWorld::mainWorld()); 89 return ScriptState::from(context); 90 } 91 92 static PassOwnPtr<v8::Handle<v8::Value>[]> createValueListFromVariantArgs(const NPVariant* arguments, uint32_t argumentCount, NPObject* owner, v8::Isolate* isolate) 93 { 94 OwnPtr<v8::Handle<v8::Value>[]> argv = adoptArrayPtr(new v8::Handle<v8::Value>[argumentCount]); 95 for (uint32_t index = 0; index < argumentCount; index++) { 96 const NPVariant* arg = &arguments[index]; 97 argv[index] = convertNPVariantToV8Object(arg, owner, isolate); 98 } 99 return argv.release(); 100 } 101 102 // Create an identifier (null terminated utf8 char*) from the NPIdentifier. 103 static v8::Local<v8::String> npIdentifierToV8Identifier(NPIdentifier name, v8::Isolate* isolate) 104 { 105 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(name); 106 if (identifier->isString) 107 return v8AtomicString(isolate, static_cast<const char*>(identifier->value.string)); 108 109 char buffer[32]; 110 snprintf(buffer, sizeof(buffer), "%d", identifier->value.number); 111 return v8AtomicString(isolate, buffer); 112 } 113 114 NPObject* v8ObjectToNPObject(v8::Handle<v8::Object> object) 115 { 116 return reinterpret_cast<NPObject*>(object->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex)); 117 } 118 119 NPObject* npCreateV8ScriptObject(NPP npp, v8::Handle<v8::Object> object, LocalDOMWindow* root, v8::Isolate* isolate) 120 { 121 // Check to see if this object is already wrapped. 122 if (object->InternalFieldCount() == npObjectInternalFieldCount) { 123 const WrapperTypeInfo* typeInfo = static_cast<const WrapperTypeInfo*>(object->GetAlignedPointerFromInternalField(v8DOMWrapperTypeIndex)); 124 if (typeInfo == npObjectTypeInfo()) { 125 NPObject* returnValue = v8ObjectToNPObject(object); 126 _NPN_RetainObject(returnValue); 127 return returnValue; 128 } 129 } 130 131 V8NPObjectVector* objectVector = 0; 132 if (V8PerContextData* perContextData = V8PerContextData::from(object->CreationContext())) { 133 int v8ObjectHash = object->GetIdentityHash(); 134 ASSERT(v8ObjectHash); 135 V8NPObjectMap* v8NPObjectMap = perContextData->v8NPObjectMap(); 136 V8NPObjectMap::iterator iter = v8NPObjectMap->find(v8ObjectHash); 137 if (iter != v8NPObjectMap->end()) { 138 V8NPObjectVector& objects = iter->value; 139 for (size_t index = 0; index < objects.size(); ++index) { 140 V8NPObject* v8npObject = objects.at(index); 141 if (v8npObject->v8Object == object && v8npObject->rootObject == root) { 142 _NPN_RetainObject(&v8npObject->object); 143 return reinterpret_cast<NPObject*>(v8npObject); 144 } 145 } 146 objectVector = &iter->value; 147 } else { 148 objectVector = &v8NPObjectMap->set(v8ObjectHash, V8NPObjectVector()).storedValue->value; 149 } 150 } 151 152 V8NPObject* v8npObject = reinterpret_cast<V8NPObject*>(_NPN_CreateObject(npp, &V8NPObjectClass)); 153 // This is uninitialized memory, we need to clear it so that 154 // Persistent::Reset won't try to Dispose anything bogus. 155 new (&v8npObject->v8Object) v8::Persistent<v8::Object>(); 156 v8npObject->v8Object.Reset(isolate, object); 157 v8npObject->rootObject = root; 158 159 if (objectVector) 160 objectVector->append(v8npObject); 161 162 return reinterpret_cast<NPObject*>(v8npObject); 163 } 164 165 V8NPObject* npObjectToV8NPObject(NPObject* npObject) 166 { 167 if (npObject->_class != &V8NPObjectClass) 168 return 0; 169 V8NPObject* v8NpObject = reinterpret_cast<V8NPObject*>(npObject); 170 if (v8NpObject->v8Object.IsEmpty()) 171 return 0; 172 return v8NpObject; 173 } 174 175 void disposeUnderlyingV8Object(NPObject* npObject, v8::Isolate* isolate) 176 { 177 ASSERT(npObject); 178 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); 179 if (!v8NpObject) 180 return; 181 v8::HandleScope scope(isolate); 182 v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NpObject->v8Object); 183 ASSERT(!v8Object->CreationContext().IsEmpty()); 184 if (V8PerContextData* perContextData = V8PerContextData::from(v8Object->CreationContext())) { 185 V8NPObjectMap* v8NPObjectMap = perContextData->v8NPObjectMap(); 186 int v8ObjectHash = v8Object->GetIdentityHash(); 187 ASSERT(v8ObjectHash); 188 V8NPObjectMap::iterator iter = v8NPObjectMap->find(v8ObjectHash); 189 if (iter != v8NPObjectMap->end()) { 190 V8NPObjectVector& objects = iter->value; 191 for (size_t index = 0; index < objects.size(); ++index) { 192 if (objects.at(index) == v8NpObject) { 193 objects.remove(index); 194 break; 195 } 196 } 197 if (objects.isEmpty()) 198 v8NPObjectMap->remove(v8ObjectHash); 199 } 200 } 201 v8NpObject->v8Object.Reset(); 202 v8NpObject->rootObject = 0; 203 } 204 205 } // namespace WebCore 206 207 bool _NPN_Invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 208 { 209 if (!npObject) 210 return false; 211 212 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 213 214 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); 215 if (!v8NpObject) { 216 if (npObject->_class->invoke) 217 return npObject->_class->invoke(npObject, methodName, arguments, argumentCount, result); 218 219 VOID_TO_NPVARIANT(*result); 220 return true; 221 } 222 223 PrivateIdentifier* identifier = static_cast<PrivateIdentifier*>(methodName); 224 if (!identifier->isString) 225 return false; 226 227 if (!strcmp(identifier->value.string, "eval")) { 228 if (argumentCount != 1) 229 return false; 230 if (arguments[0].type != NPVariantType_String) 231 return false; 232 return _NPN_Evaluate(npp, npObject, const_cast<NPString*>(&arguments[0].value.stringValue), result); 233 } 234 235 // FIXME: should use the plugin's owner frame as the security context. 236 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 237 if (!scriptState) 238 return false; 239 240 ScriptState::Scope scope(scriptState); 241 ExceptionCatcher exceptionCatcher; 242 243 v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NpObject->v8Object); 244 v8::Handle<v8::Value> functionObject = v8Object->Get(v8AtomicString(isolate, identifier->value.string)); 245 if (functionObject.IsEmpty() || functionObject->IsNull()) { 246 NULL_TO_NPVARIANT(*result); 247 return false; 248 } 249 if (functionObject->IsUndefined()) { 250 VOID_TO_NPVARIANT(*result); 251 return false; 252 } 253 254 LocalFrame* frame = v8NpObject->rootObject->frame(); 255 ASSERT(frame); 256 257 // Call the function object. 258 v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(functionObject); 259 OwnPtr<v8::Handle<v8::Value>[]> argv = createValueListFromVariantArgs(arguments, argumentCount, npObject, isolate); 260 v8::Local<v8::Value> resultObject = frame->script().callFunction(function, v8Object, argumentCount, argv.get()); 261 262 // If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was 263 // successfully invoked". If we get an error return value, was that successfully invoked? 264 if (resultObject.IsEmpty()) 265 return false; 266 267 convertV8ObjectToNPVariant(resultObject, npObject, result, isolate); 268 return true; 269 } 270 271 // FIXME: Fix it same as _NPN_Invoke (HandleScope and such). 272 bool _NPN_InvokeDefault(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 273 { 274 if (!npObject) 275 return false; 276 277 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 278 279 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); 280 if (!v8NpObject) { 281 if (npObject->_class->invokeDefault) 282 return npObject->_class->invokeDefault(npObject, arguments, argumentCount, result); 283 284 VOID_TO_NPVARIANT(*result); 285 return true; 286 } 287 288 VOID_TO_NPVARIANT(*result); 289 290 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 291 if (!scriptState) 292 return false; 293 294 ScriptState::Scope scope(scriptState); 295 ExceptionCatcher exceptionCatcher; 296 297 // Lookup the function object and call it. 298 v8::Local<v8::Object> functionObject = v8::Local<v8::Object>::New(isolate, v8NpObject->v8Object); 299 if (!functionObject->IsFunction()) 300 return false; 301 302 v8::Local<v8::Value> resultObject; 303 v8::Handle<v8::Function> function = v8::Local<v8::Function>::Cast(functionObject); 304 if (!function->IsNull()) { 305 LocalFrame* frame = v8NpObject->rootObject->frame(); 306 ASSERT(frame); 307 308 OwnPtr<v8::Handle<v8::Value>[]> argv = createValueListFromVariantArgs(arguments, argumentCount, npObject, isolate); 309 resultObject = frame->script().callFunction(function, functionObject, argumentCount, argv.get()); 310 } 311 // If we had an error, return false. The spec is a little unclear here, but says "Returns true if the method was 312 // successfully invoked". If we get an error return value, was that successfully invoked? 313 if (resultObject.IsEmpty()) 314 return false; 315 316 convertV8ObjectToNPVariant(resultObject, npObject, result, isolate); 317 return true; 318 } 319 320 bool _NPN_Evaluate(NPP npp, NPObject* npObject, NPString* npScript, NPVariant* result) 321 { 322 // FIXME: Give the embedder a way to control this. 323 bool popupsAllowed = false; 324 return _NPN_EvaluateHelper(npp, popupsAllowed, npObject, npScript, result); 325 } 326 327 bool _NPN_EvaluateHelper(NPP npp, bool popupsAllowed, NPObject* npObject, NPString* npScript, NPVariant* result) 328 { 329 VOID_TO_NPVARIANT(*result); 330 if (!npObject) 331 return false; 332 333 V8NPObject* v8NpObject = npObjectToV8NPObject(npObject); 334 if (!v8NpObject) 335 return false; 336 337 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 338 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 339 if (!scriptState) 340 return false; 341 342 ScriptState::Scope scope(scriptState); 343 ExceptionCatcher exceptionCatcher; 344 345 // FIXME: Is this branch still needed after switching to using UserGestureIndicator? 346 String filename; 347 if (!popupsAllowed) 348 filename = "npscript"; 349 350 LocalFrame* frame = v8NpObject->rootObject->frame(); 351 ASSERT(frame); 352 353 String script = String::fromUTF8(npScript->UTF8Characters, npScript->UTF8Length); 354 355 UserGestureIndicator gestureIndicator(popupsAllowed ? DefinitelyProcessingNewUserGesture : PossiblyProcessingUserGesture); 356 v8::Local<v8::Value> v8result = frame->script().executeScriptAndReturnValue(scriptState->context(), ScriptSourceCode(script, KURL(ParsedURLString, filename))); 357 358 if (v8result.IsEmpty()) 359 return false; 360 361 if (_NPN_IsAlive(npObject)) 362 convertV8ObjectToNPVariant(v8result, npObject, result, isolate); 363 return true; 364 } 365 366 bool _NPN_GetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, NPVariant* result) 367 { 368 if (!npObject) 369 return false; 370 371 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 372 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 373 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 374 if (!scriptState) 375 return false; 376 377 ScriptState::Scope scope(scriptState); 378 ExceptionCatcher exceptionCatcher; 379 380 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 381 v8::Local<v8::Value> v8result = obj->Get(npIdentifierToV8Identifier(propertyName, isolate)); 382 383 if (v8result.IsEmpty()) 384 return false; 385 386 convertV8ObjectToNPVariant(v8result, npObject, result, isolate); 387 return true; 388 } 389 390 if (npObject->_class->hasProperty && npObject->_class->getProperty) { 391 if (npObject->_class->hasProperty(npObject, propertyName)) 392 return npObject->_class->getProperty(npObject, propertyName, result); 393 } 394 395 VOID_TO_NPVARIANT(*result); 396 return false; 397 } 398 399 bool _NPN_SetProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName, const NPVariant* value) 400 { 401 if (!npObject) 402 return false; 403 404 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 405 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 406 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 407 if (!scriptState) 408 return false; 409 410 ScriptState::Scope scope(scriptState); 411 ExceptionCatcher exceptionCatcher; 412 413 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 414 obj->Set(npIdentifierToV8Identifier(propertyName, isolate), convertNPVariantToV8Object(value, object->rootObject->frame()->script().windowScriptNPObject(), isolate)); 415 return true; 416 } 417 418 if (npObject->_class->setProperty) 419 return npObject->_class->setProperty(npObject, propertyName, value); 420 421 return false; 422 } 423 424 bool _NPN_RemoveProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) 425 { 426 if (!npObject) 427 return false; 428 429 V8NPObject* object = npObjectToV8NPObject(npObject); 430 if (!object) 431 return false; 432 433 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 434 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 435 if (!scriptState) 436 return false; 437 ScriptState::Scope scope(scriptState); 438 ExceptionCatcher exceptionCatcher; 439 440 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 441 // FIXME: Verify that setting to undefined is right. 442 obj->Set(npIdentifierToV8Identifier(propertyName, isolate), v8::Undefined(isolate)); 443 return true; 444 } 445 446 bool _NPN_HasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) 447 { 448 if (!npObject) 449 return false; 450 451 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 452 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 453 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 454 if (!scriptState) 455 return false; 456 ScriptState::Scope scope(scriptState); 457 ExceptionCatcher exceptionCatcher; 458 459 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 460 return obj->Has(npIdentifierToV8Identifier(propertyName, isolate)); 461 } 462 463 if (npObject->_class->hasProperty) 464 return npObject->_class->hasProperty(npObject, propertyName); 465 return false; 466 } 467 468 bool _NPN_HasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName) 469 { 470 if (!npObject) 471 return false; 472 473 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 474 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 475 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 476 if (!scriptState) 477 return false; 478 ScriptState::Scope scope(scriptState); 479 ExceptionCatcher exceptionCatcher; 480 481 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 482 v8::Handle<v8::Value> prop = obj->Get(npIdentifierToV8Identifier(methodName, isolate)); 483 return prop->IsFunction(); 484 } 485 486 if (npObject->_class->hasMethod) 487 return npObject->_class->hasMethod(npObject, methodName); 488 return false; 489 } 490 491 void _NPN_SetException(NPObject* npObject, const NPUTF8 *message) 492 { 493 if (!npObject || !npObjectToV8NPObject(npObject)) { 494 // We won't be able to find a proper scope for this exception, so just throw it. 495 // This is consistent with JSC, which throws a global exception all the time. 496 throwError(v8GeneralError, message, v8::Isolate::GetCurrent()); 497 return; 498 } 499 500 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 501 ScriptState* scriptState = mainWorldScriptState(isolate, 0, npObject); 502 if (!scriptState) 503 return; 504 505 ScriptState::Scope scope(scriptState); 506 ExceptionCatcher exceptionCatcher; 507 508 throwError(v8GeneralError, message, isolate); 509 } 510 511 bool _NPN_Enumerate(NPP npp, NPObject* npObject, NPIdentifier** identifier, uint32_t* count) 512 { 513 if (!npObject) 514 return false; 515 516 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 517 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 518 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 519 if (!scriptState) 520 return false; 521 ScriptState::Scope scope(scriptState); 522 ExceptionCatcher exceptionCatcher; 523 524 v8::Handle<v8::Object> obj = v8::Local<v8::Object>::New(isolate, object->v8Object); 525 526 // FIXME: http://b/issue?id=1210340: Use a v8::Object::Keys() method when it exists, instead of evaluating javascript. 527 528 // FIXME: Figure out how to cache this helper function. Run a helper function that collects the properties 529 // on the object into an array. 530 const char enumeratorCode[] = 531 "(function (obj) {" 532 " var props = [];" 533 " for (var prop in obj) {" 534 " props[props.length] = prop;" 535 " }" 536 " return props;" 537 "});"; 538 v8::Handle<v8::String> source = v8AtomicString(isolate, enumeratorCode); 539 v8::Handle<v8::Value> result = V8ScriptRunner::compileAndRunInternalScript(source, isolate); 540 ASSERT(!result.IsEmpty()); 541 ASSERT(result->IsFunction()); 542 v8::Handle<v8::Function> enumerator = v8::Handle<v8::Function>::Cast(result); 543 v8::Handle<v8::Value> argv[] = { obj }; 544 v8::Local<v8::Value> propsObj = V8ScriptRunner::callInternalFunction(enumerator, v8::Handle<v8::Object>::Cast(result), WTF_ARRAY_LENGTH(argv), argv, isolate); 545 if (propsObj.IsEmpty()) 546 return false; 547 548 // Convert the results into an array of NPIdentifiers. 549 v8::Handle<v8::Array> props = v8::Handle<v8::Array>::Cast(propsObj); 550 *count = props->Length(); 551 *identifier = static_cast<NPIdentifier*>(calloc(*count, sizeof(NPIdentifier))); 552 for (uint32_t i = 0; i < *count; ++i) { 553 v8::Local<v8::Value> name = props->Get(v8::Integer::New(isolate, i)); 554 (*identifier)[i] = getStringIdentifier(v8::Local<v8::String>::Cast(name)); 555 } 556 return true; 557 } 558 559 if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(npObject->_class) && npObject->_class->enumerate) 560 return npObject->_class->enumerate(npObject, identifier, count); 561 562 return false; 563 } 564 565 bool _NPN_Construct(NPP npp, NPObject* npObject, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) 566 { 567 if (!npObject) 568 return false; 569 570 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 571 572 if (V8NPObject* object = npObjectToV8NPObject(npObject)) { 573 ScriptState* scriptState = mainWorldScriptState(isolate, npp, npObject); 574 if (!scriptState) 575 return false; 576 ScriptState::Scope scope(scriptState); 577 ExceptionCatcher exceptionCatcher; 578 579 // Lookup the constructor function. 580 v8::Handle<v8::Object> ctorObj = v8::Local<v8::Object>::New(isolate, object->v8Object); 581 if (!ctorObj->IsFunction()) 582 return false; 583 584 // Call the constructor. 585 v8::Local<v8::Value> resultObject; 586 v8::Handle<v8::Function> ctor = v8::Handle<v8::Function>::Cast(ctorObj); 587 if (!ctor->IsNull()) { 588 LocalFrame* frame = object->rootObject->frame(); 589 ASSERT(frame); 590 OwnPtr<v8::Handle<v8::Value>[]> argv = createValueListFromVariantArgs(arguments, argumentCount, npObject, isolate); 591 resultObject = V8ObjectConstructor::newInstanceInDocument(isolate, ctor, argumentCount, argv.get(), frame ? frame->document() : 0); 592 } 593 594 if (resultObject.IsEmpty()) 595 return false; 596 597 convertV8ObjectToNPVariant(resultObject, npObject, result, isolate); 598 return true; 599 } 600 601 if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(npObject->_class) && npObject->_class->construct) 602 return npObject->_class->construct(npObject, arguments, argumentCount, result); 603 604 return false; 605 } 606