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/*
* 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"
#if ENABLE(MUTATION_OBSERVERS)
#include "JSMutationObserver.h"
#include "JSMutationCallback.h"
#include "MutationObserver.h"
#include <runtime/Error.h>
using namespace JSC;
namespace WebCore {
EncodedJSValue JSC_HOST_CALL JSMutationObserverConstructor::constructJSMutationObserver(ExecState* exec)
{
if (exec->argumentCount() < 1)
return throwVMError(exec, createNotEnoughArgumentsError(exec));
JSObject* object = exec->argument(0).getObject();
if (!object) {
setDOMException(exec, TYPE_MISMATCH_ERR);
return JSValue::encode(jsUndefined());
}
JSMutationObserverConstructor* jsConstructor = jsCast<JSMutationObserverConstructor*>(exec->callee());
RefPtr<MutationCallback> callback = JSMutationCallback::create(object, jsConstructor->globalObject());
return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), MutationObserver::create(callback.release()))));
}
bool JSMutationObserverOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor)
{
MutationObserver* observer = jsCast<JSMutationObserver*>(handle.get().asCell())->impl();
HashSet<Node*> observedNodes = observer->getObservedNodes();
for (HashSet<Node*>::iterator it = observedNodes.begin(); it != observedNodes.end(); ++it) {
if (visitor.containsOpaqueRoot(root(*it)))
return true;
}
return false;
}
} // namespace WebCore
#endif // ENABLE(MUTATION_OBSERVERS)
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