/* * Copyright (C) 2011 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 "JSMutationObserver.h" #include "ExceptionCode.h" #include "JSMutationCallback.h" #include "JSNodeCustom.h" #include "MutationObserver.h" #include <runtime/Error.h> #include <runtime/PrivateName.h> using namespace JSC; namespace WebCore { EncodedJSValue JSC_HOST_CALL constructJSMutationObserver(ExecState& exec) { if (exec.argumentCount() < 1) return throwVMError(&exec, createNotEnoughArgumentsError(&exec)); JSObject* object = exec.uncheckedArgument(0).getObject(); CallData callData; if (!object || object->methodTable()->getCallData(object, callData) == CallType::None) return throwVMTypeError(&exec, ASCIILiteral("Callback argument must be a function")); DOMConstructorObject* jsConstructor = jsCast<DOMConstructorObject*>(exec.callee()); auto callback = JSMutationCallback::create(object, jsConstructor->globalObject()); JSObject* jsObserver = asObject(toJSNewlyCreated(&exec, jsConstructor->globalObject(), MutationObserver::create(WTFMove(callback)))); PrivateName propertyName; jsObserver->putDirect(jsConstructor->globalObject()->vm(), propertyName, object); return JSValue::encode(jsObserver); } bool JSMutationObserverOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor) { for (auto* node : jsCast<JSMutationObserver*>(handle.slot()->asCell())->wrapped().observedNodes()) { if (visitor.containsOpaqueRoot(root(node))) return true; } return false; } } // namespace WebCore