JSWebKitMutationObserverCustom.cpp [plain text]
#include "config.h"
#if ENABLE(MUTATION_OBSERVERS)
#include "JSWebKitMutationObserver.h"
#include "ExceptionCode.h"
#include "JSDictionary.h"
#include "JSMutationCallback.h"
#include "JSNode.h"
#include "Node.h"
#include "WebKitMutationObserver.h"
#include <runtime/Error.h>
#include <wtf/HashSet.h>
#include <wtf/text/AtomicString.h>
using namespace JSC;
namespace WebCore {
EncodedJSValue JSC_HOST_CALL JSWebKitMutationObserverConstructor::constructJSWebKitMutationObserver(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());
}
JSWebKitMutationObserverConstructor* jsConstructor = jsCast<JSWebKitMutationObserverConstructor*>(exec->callee());
RefPtr<MutationCallback> callback = JSMutationCallback::create(object, jsConstructor->globalObject());
return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), WebKitMutationObserver::create(callback.release()))));
}
struct BooleanOption {
const char* name;
MutationObserverOptions value;
};
static const BooleanOption booleanOptions[] = {
{ "childList", WebKitMutationObserver::ChildList },
{ "attributes", WebKitMutationObserver::Attributes },
{ "characterData", WebKitMutationObserver::CharacterData },
{ "subtree", WebKitMutationObserver::Subtree },
{ "attributeOldValue", WebKitMutationObserver::AttributeOldValue },
{ "characterDataOldValue", WebKitMutationObserver::CharacterDataOldValue }
};
static const size_t numBooleanOptions = sizeof(booleanOptions) / sizeof(BooleanOption);
JSValue JSWebKitMutationObserver::observe(ExecState* exec)
{
if (exec->argumentCount() < 2)
return throwError(exec, createNotEnoughArgumentsError(exec));
Node* target = toNode(exec->argument(0));
if (exec->hadException())
return jsUndefined();
JSObject* optionsObject = exec->argument(1).getObject();
if (!optionsObject) {
setDOMException(exec, TYPE_MISMATCH_ERR);
return jsUndefined();
}
JSDictionary dictionary(exec, optionsObject);
MutationObserverOptions options = 0;
for (unsigned i = 0; i < numBooleanOptions; ++i) {
bool option = false;
if (!dictionary.tryGetProperty(booleanOptions[i].name, option))
return jsUndefined();
if (option)
options |= booleanOptions[i].value;
}
HashSet<AtomicString> attributeFilter;
if (!dictionary.tryGetProperty("attributeFilter", attributeFilter))
return jsUndefined();
if (!attributeFilter.isEmpty())
options |= WebKitMutationObserver::AttributeFilter;
ExceptionCode ec = 0;
impl()->observe(target, options, attributeFilter, ec);
if (ec)
setDOMException(exec, ec);
return jsUndefined();
}
}
#endif // ENABLE(MUTATION_OBSERVERS)