bool JSNPObject::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
JSNPObject* thisObject = jsCast<JSNPObject*>(object);
ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
if (!thisObject->m_npObject) {
throwInvalidAccessError(exec);
return false;
}
NPIdentifier npIdentifier = npIdentifierFromIdentifier(propertyName);
// Calling NPClass::invoke will call into plug-in code, and there's no telling what the plug-in can do.
// (including destroying the plug-in). Because of this, we make sure to keep the plug-in alive until
// the call has finished.
NPRuntimeObjectMap::PluginProtector protector(thisObject->m_objectMap);
// First, check if the NPObject has a property with this name.
if (thisObject->m_npObject->_class->hasProperty && thisObject->m_npObject->_class->hasProperty(thisObject->m_npObject, npIdentifier)) {
PropertySlot slot;
slot.setCustom(thisObject, propertyGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete);
return true;
}
// Second, check if the NPObject has a method with this name.
if (thisObject->m_npObject->_class->hasMethod && thisObject->m_npObject->_class->hasMethod(thisObject->m_npObject, npIdentifier)) {
PropertySlot slot;
slot.setCustom(thisObject, methodGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly);
return true;
}
return false;
}
bool JSCSSStyleDeclaration::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
ASSERT_GC_OBJECT_INHERITS(this, &s_info);
const HashEntry* entry = JSCSSStyleDeclarationTable.entry(exec, propertyName);
if (entry) {
PropertySlot slot;
slot.setCustom(this, entry->propertyGetter());
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
bool ok;
unsigned index = propertyName.toUInt32(ok);
if (ok && index < static_cast<CSSStyleDeclaration*>(impl())->length()) {
PropertySlot slot;
slot.setCustomIndex(this, index, indexGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly);
return true;
}
if (canGetItemsForName(exec, static_cast<CSSStyleDeclaration*>(impl()), propertyName)) {
PropertySlot slot;
slot.setCustom(this, nameGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
return getStaticValueDescriptor<JSCSSStyleDeclaration, Base>(exec, &JSCSSStyleDeclarationTable, this, propertyName, descriptor);
}
bool JSNPObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
if (!m_npObject) {
throwInvalidAccessError(exec);
return false;
}
NPIdentifier npIdentifier = npIdentifierFromIdentifier(propertyName);
// First, check if the NPObject has a property with this name.
if (m_npObject->_class->hasProperty && m_npObject->_class->hasProperty(m_npObject, npIdentifier)) {
PropertySlot slot;
slot.setCustom(this, propertyGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete);
return true;
}
// Second, check if the NPObject has a method with this name.
if (m_npObject->_class->hasMethod && m_npObject->_class->hasMethod(m_npObject, npIdentifier)) {
PropertySlot slot;
slot.setCustom(this, methodGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly);
return true;
}
return false;
}
bool JSTestEventTarget::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
JSTestEventTarget* thisObject = jsCast<JSTestEventTarget*>(object);
ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
const HashEntry* entry = JSTestEventTargetTable.entry(exec, propertyName);
if (entry) {
PropertySlot slot;
slot.setCustom(thisObject, entry->propertyGetter());
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
unsigned index = propertyName.asIndex();
if (index != PropertyName::NotAnIndex && index < static_cast<TestEventTarget*>(thisObject->impl())->length()) {
PropertySlot slot;
slot.setCustomIndex(thisObject, index, indexGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly);
return true;
}
if (canGetItemsForName(exec, static_cast<TestEventTarget*>(thisObject->impl()), propertyName)) {
PropertySlot slot;
slot.setCustom(thisObject, nameGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
return getStaticValueDescriptor<JSTestEventTarget, Base>(exec, &JSTestEventTargetTable, thisObject, propertyName, descriptor);
}
bool JSNPObject::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
JSNPObject* thisObject = jsCast<JSNPObject*>(object);
ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
if (!thisObject->m_npObject) {
throwInvalidAccessError(exec);
return false;
}
NPIdentifier npIdentifier = npIdentifierFromIdentifier(propertyName);
// First, check if the NPObject has a property with this name.
if (thisObject->m_npObject->_class->hasProperty && thisObject->m_npObject->_class->hasProperty(thisObject->m_npObject, npIdentifier)) {
PropertySlot slot;
slot.setCustom(thisObject, propertyGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete);
return true;
}
// Second, check if the NPObject has a method with this name.
if (thisObject->m_npObject->_class->hasMethod && thisObject->m_npObject->_class->hasMethod(thisObject->m_npObject, npIdentifier)) {
PropertySlot slot;
slot.setCustom(thisObject, methodGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly);
return true;
}
return false;
}
bool JSNamedNodeMap::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
ASSERT_GC_OBJECT_INHERITS(this, &s_info);
JSValue proto = prototype();
if (proto.isObject() && static_cast<JSObject*>(asObject(proto))->hasProperty(exec, propertyName))
return false;
const HashEntry* entry = JSNamedNodeMapTable.entry(exec, propertyName);
if (entry) {
PropertySlot slot;
slot.setCustom(this, entry->propertyGetter());
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
bool ok;
unsigned index = propertyName.toUInt32(ok);
if (ok && index < static_cast<NamedNodeMap*>(impl())->length()) {
PropertySlot slot;
slot.setCustomIndex(this, index, indexGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly);
return true;
}
if (canGetItemsForName(exec, static_cast<NamedNodeMap*>(impl()), propertyName)) {
PropertySlot slot;
slot.setCustom(this, nameGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
return getStaticValueDescriptor<JSNamedNodeMap, Base>(exec, &JSNamedNodeMapTable, this, propertyName, descriptor);
}
bool RuntimeObject::getOwnPropertyDescriptor(JSObject* object, ExecState *exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
RuntimeObject* thisObject = jsCast<RuntimeObject*>(object);
if (!thisObject->m_instance) {
throwInvalidAccessError(exec);
return false;
}
RefPtr<Instance> instance = thisObject->m_instance;
instance->begin();
Class *aClass = instance->getClass();
if (aClass) {
// See if the instance has a field with the specified name.
Field *aField = aClass->fieldNamed(propertyName, instance.get());
if (aField) {
PropertySlot slot;
slot.setCustom(thisObject, fieldGetter);
instance->end();
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete);
return true;
} else {
// Now check if a method with specified name exists, if so return a function object for
// that method.
MethodList methodList = aClass->methodsNamed(propertyName, instance.get());
if (methodList.size() > 0) {
PropertySlot slot;
slot.setCustom(thisObject, methodGetter);
instance->end();
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly);
return true;
}
}
// Try a fallback object.
if (!aClass->fallbackObject(exec, instance.get(), propertyName).isUndefined()) {
PropertySlot slot;
slot.setCustom(thisObject, fallbackObjectGetter);
instance->end();
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly | DontEnum);
return true;
}
}
instance->end();
return instance->getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
}
bool DebuggerScope::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
DebuggerScope* scope = jsCast<DebuggerScope*>(object);
ASSERT(scope->isValid());
if (!scope->isValid())
return false;
JSObject* thisObject = JSScope::objectAtScope(scope->jsScope());
slot.setThisValue(JSValue(thisObject));
// By default, JSObject::getPropertySlot() will look in the DebuggerScope's prototype
// chain and not the wrapped scope, and JSObject::getPropertySlot() cannot be overridden
// to behave differently for the DebuggerScope.
//
// Instead, we'll treat all properties in the wrapped scope and its prototype chain as
// the own properties of the DebuggerScope. This is fine because the WebInspector
// does not presently need to distinguish between what's owned at each level in the
// prototype chain. Hence, we'll invoke getPropertySlot() on the wrapped scope here
// instead of getOwnPropertySlot().
bool result = thisObject->getPropertySlot(exec, propertyName, slot);
if (result && slot.isValue() && slot.getValue(exec, propertyName) == jsTDZValue()) {
// FIXME:
// We hit a scope property that has the TDZ empty value.
// Currently, we just lie to the inspector and claim that this property is undefined.
// This is not ideal and we should fix it.
// https://bugs.webkit.org/show_bug.cgi?id=144977
slot.setValue(slot.slotBase(), DontEnum, jsUndefined());
return true;
}
return result;
}
static JSValue *getProperty(ExecState *exec, JSObject *obj, unsigned index)
{
PropertySlot slot;
if (!obj->getPropertySlot(exec, index, slot))
return NULL;
return slot.getValue(exec, obj, index);
}
JSValue *JSObject::get(ExecState *exec, unsigned propertyName) const
{
PropertySlot slot;
if (const_cast<JSObject *>(this)->getPropertySlot(exec, propertyName, slot))
return slot.getValue(exec, const_cast<JSObject *>(this), propertyName);
return jsUndefined();
}
bool JSHistory::getOwnPropertyDescriptorDelegate(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
if (!impl()->frame()) {
descriptor.setUndefined();
return true;
}
// Throw out all cross domain access
if (!allowAccessToFrame(exec, impl()->frame()))
return true;
// Check for the few functions that we allow, even when called cross-domain.
const HashEntry* entry = JSHistoryPrototype::s_info.propHashTable(exec)->entry(exec, propertyName);
if (entry) {
PropertySlot slot;
// Allow access to back(), forward() and go() from any frame.
if (entry->attributes() & JSC::Function) {
if (entry->function() == jsHistoryPrototypeFunctionBack) {
slot.setCustom(this, nonCachingStaticBackFunctionGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
} else if (entry->function() == jsHistoryPrototypeFunctionForward) {
slot.setCustom(this, nonCachingStaticForwardFunctionGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
} else if (entry->function() == jsHistoryPrototypeFunctionGo) {
slot.setCustom(this, nonCachingStaticGoFunctionGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
}
} else {
// Allow access to toString() cross-domain, but always Object.toString.
if (propertyName == exec->propertyNames().toString) {
PropertySlot slot;
slot.setCustom(this, objectToStringFunctionGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
}
descriptor.setUndefined();
return true;
}
bool JSHTMLDocument::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
if (canGetItemsForName(exec, static_cast<HTMLDocument*>(impl()), propertyName)) {
PropertySlot slot;
slot.setCustom(this, nameGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
return getStaticValueDescriptor<JSHTMLDocument, Base>(exec, &JSHTMLDocumentTable, this, propertyName, descriptor);
}
bool JSEntryArray::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
const HashEntry* entry = JSEntryArrayTable.entry(exec, propertyName);
if (entry) {
PropertySlot slot;
slot.setCustom(this, entry->propertyGetter());
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
bool ok;
unsigned index = propertyName.toUInt32(ok);
if (ok && index < static_cast<EntryArray*>(impl())->length()) {
PropertySlot slot;
slot.setCustomIndex(this, index, indexGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | ReadOnly);
return true;
}
return getStaticValueDescriptor<JSEntryArray, Base>(exec, getJSEntryArrayTable(exec), this, propertyName, descriptor);
}
inline JSValue DialogHandler::returnValue() const
{
JSDOMWindow* globalObject = toJSDOMWindow(m_frame.get(), normalWorld(m_exec->globalData()));
if (!globalObject)
return jsUndefined();
Identifier identifier(m_exec, "returnValue");
PropertySlot slot;
if (!JSGlobalObject::getOwnPropertySlot(globalObject, m_exec, identifier, slot))
return jsUndefined();
return slot.getValue(m_exec, identifier);
}
bool RuntimeMethod::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor &descriptor)
{
if (propertyName == exec->propertyNames().length) {
PropertySlot slot;
slot.setCustom(this, lengthGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
return InternalFunction::getOwnPropertyDescriptor(exec, propertyName, descriptor);
}
bool RuntimeMethod::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor &descriptor)
{
RuntimeMethod* thisObject = jsCast<RuntimeMethod*>(object);
if (propertyName == exec->propertyNames().length) {
PropertySlot slot;
slot.setCustom(thisObject, lengthGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
return InternalFunction::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
}
bool JSTestCustomNamedGetter::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
JSTestCustomNamedGetter* thisObject = jsCast<JSTestCustomNamedGetter*>(object);
ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
if (canGetItemsForName(exec, static_cast<TestCustomNamedGetter*>(thisObject->impl()), propertyName)) {
PropertySlot slot;
slot.setCustom(thisObject, nameGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
return getStaticValueDescriptor<JSTestCustomNamedGetter, Base>(exec, &JSTestCustomNamedGetterTable, thisObject, propertyName, descriptor);
}
JSValue *JSObject::get(ExecState *exec, const Identifier &propertyName) const
{
PropertySlot slot;
if (const_cast<JSObject *>(this)->getPropertySlot(exec, propertyName, slot)) {
JSValue* val = slot.getValue(exec, const_cast<JSObject *>(this), propertyName);
assert(val);
return val;
}
return jsUndefined();
}
bool RuntimeArray::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
RuntimeArray* thisObject = jsCast<RuntimeArray*>(object);
if (propertyName == exec->propertyNames().length) {
PropertySlot slot;
slot.setCustom(thisObject, lengthGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
unsigned index = propertyName.asIndex();
if (index < thisObject->getLength()) {
ASSERT(index != PropertyName::NotAnIndex);
PropertySlot slot;
slot.setCustomIndex(thisObject, index, indexGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | DontEnum);
return true;
}
return JSObject::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
}
bool RuntimeArray::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
if (propertyName == exec->propertyNames().length) {
PropertySlot slot;
slot.setCustom(this, lengthGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
bool ok;
unsigned index = propertyName.toArrayIndex(ok);
if (ok) {
if (index < getLength()) {
PropertySlot slot;
slot.setCustomIndex(this, index, indexGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | DontEnum);
return true;
}
}
return JSObject::getOwnPropertyDescriptor(exec, propertyName, descriptor);
}
bool JSLocation::getOwnPropertyDescriptorDelegate(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
Frame* frame = impl()->frame();
if (!frame) {
descriptor.setUndefined();
return true;
}
// throw out all cross domain access
if (!allowAccessToFrame(exec, frame))
return true;
// Check for the few functions that we allow, even when called cross-domain.
const HashEntry* entry = JSLocationPrototype::s_info.propHashTable(exec)->entry(exec, propertyName);
PropertySlot slot;
if (entry && (entry->attributes() & JSC::Function)) {
if (entry->function() == jsLocationPrototypeFunctionReplace) {
slot.setCustom(this, nonCachingStaticReplaceFunctionGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
} else if (entry->function() == jsLocationPrototypeFunctionReload) {
slot.setCustom(this, nonCachingStaticReloadFunctionGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
} else if (entry->function() == jsLocationPrototypeFunctionAssign) {
slot.setCustom(this, nonCachingStaticAssignFunctionGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
}
// FIXME: Other implementers of the Window cross-domain scheme (Window, History) allow toString,
// but for now we have decided not to, partly because it seems silly to return "[Object Location]" in
// such cases when normally the string form of Location would be the URL.
descriptor.setUndefined();
return true;
}
bool runtimeObjectCustomGetOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor, JSHTMLElement* element)
{
RuntimeObjectImp* runtimeObject = getRuntimeObject(exec, element->impl());
if (!runtimeObject)
return false;
if (!runtimeObject->hasProperty(exec, propertyName))
return false;
PropertySlot slot;
slot.setCustom(element, runtimeObjectPropertyGetter);
// While we don't know what the plugin allows, we do know that we prevent
// enumeration or deletion of properties, so we mark plugin properties
// as DontEnum | DontDelete
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontEnum | DontDelete);
return true;
}
JSValue* JSValue::getByIndex(ExecState* exec, unsigned propertyName) const
{
switch (type()) {
case StringType: {
UString s = static_cast<const StringImp*>(asCell())->value();
if (propertyName < static_cast<unsigned>(s.size())) {
return jsString(s.substr(propertyName, 1));
}
// fall through
}
default: {
JSObject* obj = toObject(exec);
PropertySlot slot;
if (obj->getPropertySlot(exec, propertyName, slot))
return slot.getValue(exec, obj, propertyName);
return jsUndefined();
}
}
}
// Property access sequence is:
// (1) indexed properties,
// (2) regular own properties,
// (3) named properties (in fact, these shouldn't be on the window, should be on the NPO).
bool JSDOMWindow::getOwnPropertySlot(JSObject* object, ExecState* state, PropertyName propertyName, PropertySlot& slot)
{
// (1) First, indexed properties.
// Hand off all indexed access to getOwnPropertySlotByIndex, which supports the indexed getter.
if (Optional<unsigned> index = parseIndex(propertyName))
return getOwnPropertySlotByIndex(object, state, index.value(), slot);
auto* thisObject = jsCast<JSDOMWindow*>(object);
auto* frame = thisObject->wrapped().frame();
// Hand off all cross-domain/frameless access to jsDOMWindowGetOwnPropertySlotRestrictedAccess.
String errorMessage;
if (!frame || !BindingSecurity::shouldAllowAccessToDOMWindow(*state, thisObject->wrapped(), errorMessage))
return jsDOMWindowGetOwnPropertySlotRestrictedAccess(thisObject, frame, state, propertyName, slot, errorMessage);
// FIXME: this need more explanation.
// (Particularly, is it correct that this exists here but not in getOwnPropertySlotByIndex?)
slot.setWatchpointSet(thisObject->m_windowCloseWatchpoints);
// (2) Regular own properties.
PropertySlot slotCopy = slot;
if (Base::getOwnPropertySlot(thisObject, state, propertyName, slot)) {
// Detect when we're getting the property 'showModalDialog', this is disabled, and has its original value.
bool isShowModalDialogAndShouldHide = propertyName == state->propertyNames().showModalDialog
&& !DOMWindow::canShowModalDialog(frame)
&& slot.isValue() && isHostFunction(slot.getValue(state, propertyName), jsDOMWindowInstanceFunctionShowModalDialog);
// Unless we're in the showModalDialog special case, we're done.
if (!isShowModalDialogAndShouldHide)
return true;
slot = slotCopy;
}
#if ENABLE(USER_MESSAGE_HANDLERS)
if (propertyName == state->propertyNames().webkit && thisObject->wrapped().shouldHaveWebKitNamespaceForWorld(thisObject->world())) {
slot.setCacheableCustom(thisObject, DontDelete | ReadOnly, jsDOMWindowWebKit);
return true;
}
#endif
return false;
}
JSValue JSActivation::argumentsGetter(ExecState* exec, const Identifier&, const PropertySlot& slot)
{
JSActivation* activation = asActivation(slot.slotBase());
if (activation->d()->functionExecutable->usesArguments()) {
PropertySlot slot;
activation->symbolTableGet(exec->propertyNames().arguments, slot);
return slot.getValue(exec, exec->propertyNames().arguments);
}
CallFrame* callFrame = CallFrame::create(activation->d()->registers);
Arguments* arguments = callFrame->optionalCalleeArguments();
if (!arguments) {
arguments = new (callFrame) Arguments(callFrame);
arguments->copyRegisters();
callFrame->setCalleeArguments(arguments);
}
ASSERT(arguments->inherits(&Arguments::info));
return arguments;
}
JSValue JSDOMWindow::showModalDialog(ExecState* exec)
{
String url = valueToStringWithUndefinedOrNullCheck(exec, exec->argument(0));
JSValue dialogArgs = exec->argument(1);
String featureArgs = valueToStringWithUndefinedOrNullCheck(exec, exec->argument(2));
Frame* frame = impl()->frame();
if (!frame)
return jsUndefined();
Frame* lexicalFrame = toLexicalFrame(exec);
if (!lexicalFrame)
return jsUndefined();
Frame* dynamicFrame = toDynamicFrame(exec);
if (!dynamicFrame)
return jsUndefined();
if (!DOMWindow::canShowModalDialogNow(frame) || !domWindowAllowPopUp(dynamicFrame))
return jsUndefined();
HashMap<String, String> features;
DOMWindow::parseModalDialogFeatures(featureArgs, features);
const bool trusted = false;
// The following features from Microsoft's documentation are not implemented:
// - default font settings
// - width, height, left, and top specified in units other than "px"
// - edge (sunken or raised, default is raised)
// - dialogHide: trusted && boolFeature(features, "dialoghide"), makes dialog hide when you print
// - help: boolFeature(features, "help", true), makes help icon appear in dialog (what does it do on Windows?)
// - unadorned: trusted && boolFeature(features, "unadorned");
FloatRect screenRect = screenAvailableRect(frame->view());
WindowFeatures wargs;
wargs.width = WindowFeatures::floatFeature(features, "dialogwidth", 100, screenRect.width(), 620); // default here came from frame size of dialog in MacIE
wargs.widthSet = true;
wargs.height = WindowFeatures::floatFeature(features, "dialogheight", 100, screenRect.height(), 450); // default here came from frame size of dialog in MacIE
wargs.heightSet = true;
wargs.x = WindowFeatures::floatFeature(features, "dialogleft", screenRect.x(), screenRect.right() - wargs.width, -1);
wargs.xSet = wargs.x > 0;
wargs.y = WindowFeatures::floatFeature(features, "dialogtop", screenRect.y(), screenRect.bottom() - wargs.height, -1);
wargs.ySet = wargs.y > 0;
if (WindowFeatures::boolFeature(features, "center", true)) {
if (!wargs.xSet) {
wargs.x = screenRect.x() + (screenRect.width() - wargs.width) / 2;
wargs.xSet = true;
}
if (!wargs.ySet) {
wargs.y = screenRect.y() + (screenRect.height() - wargs.height) / 2;
wargs.ySet = true;
}
}
wargs.dialog = true;
wargs.resizable = WindowFeatures::boolFeature(features, "resizable");
wargs.scrollbarsVisible = WindowFeatures::boolFeature(features, "scroll", true);
wargs.statusBarVisible = WindowFeatures::boolFeature(features, "status", !trusted);
wargs.menuBarVisible = false;
wargs.toolBarVisible = false;
wargs.locationBarVisible = false;
wargs.fullscreen = false;
Frame* dialogFrame = createWindow(exec, lexicalFrame, dynamicFrame, frame, url, "", wargs, dialogArgs);
if (!dialogFrame)
return jsUndefined();
JSDOMWindow* dialogWindow = toJSDOMWindow(dialogFrame, currentWorld(exec));
dialogFrame->page()->chrome()->runModal();
Identifier returnValue(exec, "returnValue");
if (dialogWindow->allowsAccessFromNoErrorMessage(exec)) {
PropertySlot slot;
// This is safe, we have already performed the origin security check and we are
// not interested in any of the DOM properties of the window.
if (dialogWindow->JSGlobalObject::getOwnPropertySlot(exec, returnValue, slot))
return slot.getValue(exec, returnValue);
}
return jsUndefined();
}
// ECMA 15.4.4
JSValue* ArrayProtoFunc::callAsFunction(ExecState* exec, JSObject* thisObj, const List& args)
{
unsigned length = thisObj->get(exec, exec->propertyNames().length)->toUInt32(exec);
JSValue *result = 0; // work around gcc 4.0 bug in uninitialized variable warning
switch (id) {
case ToLocaleString:
case ToString:
if (!thisObj->inherits(&ArrayInstance::info))
return throwError(exec, TypeError);
// fall through
case Join: {
static HashSet<JSObject*> visitedElems;
if (visitedElems.contains(thisObj))
return jsString("");
UString separator = ",";
UString str = "";
visitedElems.add(thisObj);
if (id == Join && !args[0]->isUndefined())
separator = args[0]->toString(exec);
for (unsigned int k = 0; k < length; k++) {
if (k >= 1)
str += separator;
if (str.isNull()) {
JSObject *error = Error::create(exec, GeneralError, "Out of memory");
exec->setException(error);
break;
}
JSValue* element = thisObj->get(exec, k);
if (element->isUndefinedOrNull())
continue;
bool fallback = false;
if (id == ToLocaleString) {
JSObject* o = element->toObject(exec);
JSValue* conversionFunction = o->get(exec, exec->propertyNames().toLocaleString);
if (conversionFunction->isObject() && static_cast<JSObject*>(conversionFunction)->implementsCall())
str += static_cast<JSObject*>(conversionFunction)->call(exec, o, List())->toString(exec);
else
// try toString() fallback
fallback = true;
}
if (id == ToString || id == Join || fallback)
str += element->toString(exec);
if (str.isNull()) {
JSObject *error = Error::create(exec, GeneralError, "Out of memory");
exec->setException(error);
}
if (exec->hadException())
break;
}
visitedElems.remove(thisObj);
result = jsString(str);
break;
}
case Concat: {
JSObject *arr = static_cast<JSObject *>(exec->lexicalInterpreter()->builtinArray()->construct(exec,List::empty()));
int n = 0;
JSValue *curArg = thisObj;
JSObject *curObj = static_cast<JSObject *>(thisObj);
ListIterator it = args.begin();
for (;;) {
if (curArg->isObject() &&
curObj->inherits(&ArrayInstance::info)) {
unsigned int k = 0;
// Older versions tried to optimize out getting the length of thisObj
// by checking for n != 0, but that doesn't work if thisObj is an empty array.
length = curObj->get(exec, exec->propertyNames().length)->toUInt32(exec);
while (k < length) {
if (JSValue *v = getProperty(exec, curObj, k))
arr->put(exec, n, v);
n++;
k++;
}
} else {
arr->put(exec, n, curArg);
n++;
}
if (it == args.end())
break;
curArg = *it;
curObj = static_cast<JSObject *>(it++); // may be 0
}
arr->put(exec, exec->propertyNames().length, jsNumber(n), DontEnum | DontDelete);
result = arr;
break;
}
case Pop:{
if (length == 0) {
thisObj->put(exec, exec->propertyNames().length, jsNumber(length), DontEnum | DontDelete);
result = jsUndefined();
} else {
result = thisObj->get(exec, length - 1);
thisObj->put(exec, exec->propertyNames().length, jsNumber(length - 1), DontEnum | DontDelete);
}
break;
}
case Push: {
for (int n = 0; n < args.size(); n++)
thisObj->put(exec, length + n, args[n]);
length += args.size();
thisObj->put(exec, exec->propertyNames().length, jsNumber(length), DontEnum | DontDelete);
result = jsNumber(length);
break;
}
case Reverse: {
unsigned int middle = length / 2;
for (unsigned int k = 0; k < middle; k++) {
unsigned lk1 = length - k - 1;
JSValue *obj2 = getProperty(exec, thisObj, lk1);
JSValue *obj = getProperty(exec, thisObj, k);
if (obj2)
thisObj->put(exec, k, obj2);
else
thisObj->deleteProperty(exec, k);
if (obj)
thisObj->put(exec, lk1, obj);
else
thisObj->deleteProperty(exec, lk1);
}
result = thisObj;
break;
}
case Shift: {
if (length == 0) {
thisObj->put(exec, exec->propertyNames().length, jsNumber(length), DontEnum | DontDelete);
result = jsUndefined();
} else {
result = thisObj->get(exec, 0);
for(unsigned int k = 1; k < length; k++) {
if (JSValue *obj = getProperty(exec, thisObj, k))
thisObj->put(exec, k-1, obj);
else
thisObj->deleteProperty(exec, k-1);
}
thisObj->deleteProperty(exec, length - 1);
thisObj->put(exec, exec->propertyNames().length, jsNumber(length - 1), DontEnum | DontDelete);
}
break;
}
case Slice: {
// http://developer.netscape.com/docs/manuals/js/client/jsref/array.htm#1193713 or 15.4.4.10
// We return a new array
JSObject *resObj = static_cast<JSObject *>(exec->lexicalInterpreter()->builtinArray()->construct(exec,List::empty()));
result = resObj;
double begin = 0;
if (!args[0]->isUndefined()) {
begin = args[0]->toInteger(exec);
if (begin >= 0) { // false for NaN
if (begin > length)
begin = length;
} else {
begin += length;
if (!(begin >= 0)) // true for NaN
begin = 0;
}
}
double end = length;
if (!args[1]->isUndefined()) {
end = args[1]->toInteger(exec);
if (end < 0) { // false for NaN
end += length;
if (end < 0)
end = 0;
} else {
if (!(end <= length)) // true for NaN
end = length;
}
}
//printf( "Slicing from %d to %d \n", begin, end );
int n = 0;
int b = static_cast<int>(begin);
int e = static_cast<int>(end);
for(int k = b; k < e; k++, n++) {
if (JSValue *v = getProperty(exec, thisObj, k))
resObj->put(exec, n, v);
}
resObj->put(exec, exec->propertyNames().length, jsNumber(n), DontEnum | DontDelete);
break;
}
case Sort:{
#if 0
printf("KJS Array::Sort length=%d\n", length);
for ( unsigned int i = 0 ; i<length ; ++i )
printf("KJS Array::Sort: %d: %s\n", i, thisObj->get(exec, i)->toString(exec).ascii() );
#endif
JSObject *sortFunction = NULL;
if (!args[0]->isUndefined())
{
sortFunction = args[0]->toObject(exec);
if (!sortFunction->implementsCall())
sortFunction = NULL;
}
if (thisObj->classInfo() == &ArrayInstance::info) {
if (sortFunction)
((ArrayInstance *)thisObj)->sort(exec, sortFunction);
else
((ArrayInstance *)thisObj)->sort(exec);
result = thisObj;
break;
}
if (length == 0) {
thisObj->put(exec, exec->propertyNames().length, jsNumber(0), DontEnum | DontDelete);
result = thisObj;
break;
}
// "Min" sort. Not the fastest, but definitely less code than heapsort
// or quicksort, and much less swapping than bubblesort/insertionsort.
for ( unsigned int i = 0 ; i<length-1 ; ++i )
{
JSValue *iObj = thisObj->get(exec,i);
unsigned int themin = i;
JSValue *minObj = iObj;
for ( unsigned int j = i+1 ; j<length ; ++j )
{
JSValue *jObj = thisObj->get(exec,j);
double cmp;
if (jObj->isUndefined()) {
cmp = 1; // don't check minObj because there's no need to differentiate == (0) from > (1)
} else if (minObj->isUndefined()) {
cmp = -1;
} else if (sortFunction) {
List l;
l.append(jObj);
l.append(minObj);
cmp = sortFunction->call(exec, exec->dynamicInterpreter()->globalObject(), l)->toNumber(exec);
} else {
cmp = (jObj->toString(exec) < minObj->toString(exec)) ? -1 : 1;
}
if ( cmp < 0 )
{
themin = j;
minObj = jObj;
}
}
// Swap themin and i
if ( themin > i )
{
//printf("KJS Array::Sort: swapping %d and %d\n", i, themin );
thisObj->put( exec, i, minObj );
thisObj->put( exec, themin, iObj );
}
}
#if 0
printf("KJS Array::Sort -- Resulting array:\n");
for ( unsigned int i = 0 ; i<length ; ++i )
printf("KJS Array::Sort: %d: %s\n", i, thisObj->get(exec, i)->toString(exec).ascii() );
#endif
result = thisObj;
break;
}
case Splice: {
// 15.4.4.12 - oh boy this is huge
JSObject *resObj = static_cast<JSObject *>(exec->lexicalInterpreter()->builtinArray()->construct(exec,List::empty()));
result = resObj;
int begin = args[0]->toUInt32(exec);
if ( begin < 0 )
begin = maxInt( begin + length, 0 );
else
begin = minInt( begin, length );
unsigned int deleteCount = minInt( maxInt( args[1]->toUInt32(exec), 0 ), length - begin );
//printf( "Splicing from %d, deleteCount=%d \n", begin, deleteCount );
for(unsigned int k = 0; k < deleteCount; k++) {
if (JSValue *v = getProperty(exec, thisObj, k+begin))
resObj->put(exec, k, v);
}
resObj->put(exec, exec->propertyNames().length, jsNumber(deleteCount), DontEnum | DontDelete);
unsigned int additionalArgs = maxInt( args.size() - 2, 0 );
if ( additionalArgs != deleteCount )
{
if ( additionalArgs < deleteCount )
{
for ( unsigned int k = begin; k < length - deleteCount; ++k )
{
if (JSValue *v = getProperty(exec, thisObj, k+deleteCount))
thisObj->put(exec, k+additionalArgs, v);
else
thisObj->deleteProperty(exec, k+additionalArgs);
}
for ( unsigned int k = length ; k > length - deleteCount + additionalArgs; --k )
thisObj->deleteProperty(exec, k-1);
}
else
{
for ( unsigned int k = length - deleteCount; (int)k > begin; --k )
{
if (JSValue *obj = getProperty(exec, thisObj, k + deleteCount - 1))
thisObj->put(exec, k + additionalArgs - 1, obj);
else
thisObj->deleteProperty(exec, k+additionalArgs-1);
}
}
}
for ( unsigned int k = 0; k < additionalArgs; ++k )
{
thisObj->put(exec, k+begin, args[k+2]);
}
thisObj->put(exec, exec->propertyNames().length, jsNumber(length - deleteCount + additionalArgs), DontEnum | DontDelete);
break;
}
case UnShift: { // 15.4.4.13
unsigned int nrArgs = args.size();
for ( unsigned int k = length; k > 0; --k )
{
if (JSValue *v = getProperty(exec, thisObj, k - 1))
thisObj->put(exec, k+nrArgs-1, v);
else
thisObj->deleteProperty(exec, k+nrArgs-1);
}
for ( unsigned int k = 0; k < nrArgs; ++k )
thisObj->put(exec, k, args[k]);
result = jsNumber(length + nrArgs);
thisObj->put(exec, exec->propertyNames().length, result, DontEnum | DontDelete);
break;
}
case Filter:
case Map: {
JSObject *eachFunction = args[0]->toObject(exec);
if (!eachFunction->implementsCall())
return throwError(exec, TypeError);
JSObject *applyThis = args[1]->isUndefinedOrNull() ? exec->dynamicInterpreter()->globalObject() : args[1]->toObject(exec);
JSObject *resultArray;
if (id == Filter)
resultArray = static_cast<JSObject *>(exec->lexicalInterpreter()->builtinArray()->construct(exec, List::empty()));
else {
List args;
args.append(jsNumber(length));
resultArray = static_cast<JSObject *>(exec->lexicalInterpreter()->builtinArray()->construct(exec, args));
}
unsigned filterIndex = 0;
for (unsigned k = 0; k < length && !exec->hadException(); ++k) {
PropertySlot slot;
if (!thisObj->getPropertySlot(exec, k, slot))
continue;
JSValue *v = slot.getValue(exec, thisObj, k);
List eachArguments;
eachArguments.append(v);
eachArguments.append(jsNumber(k));
eachArguments.append(thisObj);
JSValue *result = eachFunction->call(exec, applyThis, eachArguments);
if (id == Map)
resultArray->put(exec, k, result);
else if (result->toBoolean(exec))
resultArray->put(exec, filterIndex++, v);
}
return resultArray;
}
case Every:
case ForEach:
case Some: {
//Documentation for these three is available at:
//http://developer-test.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Objects:Array:every
//http://developer-test.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Objects:Array:forEach
//http://developer-test.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Objects:Array:some
JSObject *eachFunction = args[0]->toObject(exec);
if (!eachFunction->implementsCall())
return throwError(exec, TypeError);
JSObject *applyThis = args[1]->isUndefinedOrNull() ? exec->dynamicInterpreter()->globalObject() : args[1]->toObject(exec);
if (id == Some || id == Every)
result = jsBoolean(id == Every);
else
result = jsUndefined();
for (unsigned k = 0; k < length && !exec->hadException(); ++k) {
PropertySlot slot;
if (!thisObj->getPropertySlot(exec, k, slot))
continue;
List eachArguments;
eachArguments.append(slot.getValue(exec, thisObj, k));
eachArguments.append(jsNumber(k));
eachArguments.append(thisObj);
bool predicateResult = eachFunction->call(exec, applyThis, eachArguments)->toBoolean(exec);
if (id == Every && !predicateResult) {
result = jsBoolean(false);
break;
}
if (id == Some && predicateResult) {
result = jsBoolean(true);
break;
}
}
break;
}
case IndexOf: {
// JavaScript 1.5 Extension by Mozilla
// Documentation: http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Array:indexOf
unsigned index = 0;
double d = args[1]->toInteger(exec);
if (d < 0)
d += length;
if (d > 0) {
if (d > length)
index = length;
else
index = static_cast<unsigned>(d);
}
JSValue* searchElement = args[0];
for (; index < length; ++index) {
JSValue* e = getProperty(exec, thisObj, index);
if (!e)
continue;
if (strictEqual(exec, searchElement, e))
return jsNumber(index);
}
return jsNumber(-1);
}
case LastIndexOf: {
// JavaScript 1.6 Extension by Mozilla
// Documentation: http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Array:lastIndexOf
int index = length - 1;
double d = args[1]->toInteger(exec);
if (d < 0) {
d += length;
if (d < 0)
return jsNumber(-1);
}
if (d < length)
index = static_cast<int>(d);
JSValue* searchElement = args[0];
for (; index >= 0; --index) {
JSValue* e = getProperty(exec, thisObj, index);
if (!e)
continue;
if (strictEqual(exec, searchElement, e))
return jsNumber(index);
}
return jsNumber(-1);
}
default:
assert(0);
result = 0;
break;
}
return result;
}
// ES5 8.10.5 ToPropertyDescriptor
static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor& desc)
{
if (!in.isObject()) {
throwError(exec, TypeError, "Property description must be an object.");
return false;
}
JSObject* description = asObject(in);
PropertySlot enumerableSlot;
if (description->getPropertySlot(exec, exec->propertyNames().enumerable, enumerableSlot)) {
desc.setEnumerable(enumerableSlot.getValue(exec, exec->propertyNames().enumerable).toBoolean(exec));
if (exec->hadException())
return false;
}
PropertySlot configurableSlot;
if (description->getPropertySlot(exec, exec->propertyNames().configurable, configurableSlot)) {
desc.setConfigurable(configurableSlot.getValue(exec, exec->propertyNames().configurable).toBoolean(exec));
if (exec->hadException())
return false;
}
JSValue value;
PropertySlot valueSlot;
if (description->getPropertySlot(exec, exec->propertyNames().value, valueSlot)) {
desc.setValue(valueSlot.getValue(exec, exec->propertyNames().value));
if (exec->hadException())
return false;
}
PropertySlot writableSlot;
if (description->getPropertySlot(exec, exec->propertyNames().writable, writableSlot)) {
desc.setWritable(writableSlot.getValue(exec, exec->propertyNames().writable).toBoolean(exec));
if (exec->hadException())
return false;
}
PropertySlot getSlot;
if (description->getPropertySlot(exec, exec->propertyNames().get, getSlot)) {
JSValue get = getSlot.getValue(exec, exec->propertyNames().get);
if (exec->hadException())
return false;
if (!get.isUndefined()) {
CallData callData;
if (get.getCallData(callData) == CallTypeNone) {
throwError(exec, TypeError, "Getter must be a function.");
return false;
}
} else
get = JSValue();
desc.setGetter(get);
}
PropertySlot setSlot;
if (description->getPropertySlot(exec, exec->propertyNames().set, setSlot)) {
JSValue set = setSlot.getValue(exec, exec->propertyNames().set);
if (exec->hadException())
return false;
if (!set.isUndefined()) {
CallData callData;
if (set.getCallData(callData) == CallTypeNone) {
throwError(exec, TypeError, "Setter must be a function.");
return false;
}
} else
set = JSValue();
desc.setSetter(set);
}
if (!desc.isAccessorDescriptor())
return true;
if (desc.value()) {
throwError(exec, TypeError, "Invalid property. 'value' present on property with getter or setter.");
return false;
}
if (desc.writablePresent()) {
throwError(exec, TypeError, "Invalid property. 'writable' present on property with getter or setter.");
return false;
}
return true;
}
bool JSDOMWindow::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
JSDOMWindow* thisObject = jsCast<JSDOMWindow*>(object);
// Never allow cross-domain getOwnPropertyDescriptor
if (!BindingSecurity::shouldAllowAccessToDOMWindow(exec, thisObject->impl()))
return false;
const HashEntry* entry;
// We don't want any properties other than "close" and "closed" on a closed window.
if (!thisObject->impl()->frame()) {
// The following code is safe for cross-domain and same domain use.
// It ignores any custom properties that might be set on the DOMWindow (including a custom prototype).
entry = s_info.propHashTable(exec)->entry(exec, propertyName);
if (entry && !(entry->attributes() & JSC::Function) && entry->propertyGetter() == jsDOMWindowClosed) {
descriptor.setDescriptor(jsBoolean(true), ReadOnly | DontDelete | DontEnum);
return true;
}
entry = JSDOMWindowPrototype::s_info.propHashTable(exec)->entry(exec, propertyName);
if (entry && (entry->attributes() & JSC::Function) && entry->function() == jsDOMWindowPrototypeFunctionClose) {
PropertySlot slot;
slot.setCustom(thisObject, nonCachingStaticFunctionGetter<jsDOMWindowPrototypeFunctionClose, 0>);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
descriptor.setUndefined();
return true;
}
entry = JSDOMWindow::s_info.propHashTable(exec)->entry(exec, propertyName);
if (entry) {
PropertySlot slot;
slot.setCustom(thisObject, entry->propertyGetter());
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
// Check for child frames by name before built-in properties to
// match Mozilla. This does not match IE, but some sites end up
// naming frames things that conflict with window properties that
// are in Moz but not IE. Since we have some of these, we have to do
// it the Moz way.
if (thisObject->impl()->frame()->tree()->scopedChild(propertyNameToAtomicString(propertyName))) {
PropertySlot slot;
slot.setCustom(thisObject, childFrameGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
unsigned i = propertyName.asIndex();
if (i < thisObject->impl()->frame()->tree()->scopedChildCount()) {
ASSERT(i != PropertyName::NotAnIndex);
PropertySlot slot;
slot.setCustomIndex(thisObject, i, indexGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
// Allow shortcuts like 'Image1' instead of document.images.Image1
Document* document = thisObject->impl()->frame()->document();
if (document->isHTMLDocument()) {
AtomicStringImpl* atomicPropertyName = findAtomicString(propertyName);
if (atomicPropertyName && (toHTMLDocument(document)->hasNamedItem(atomicPropertyName) || document->hasElementWithId(atomicPropertyName))) {
PropertySlot slot;
slot.setCustom(thisObject, namedItemGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
}
return Base::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
}
bool JSDOMWindow::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
{
// Never allow cross-domain getOwnPropertyDescriptor
if (!allowsAccessFrom(exec))
return false;
const HashEntry* entry;
// We don't want any properties other than "close" and "closed" on a closed window.
if (!impl()->frame()) {
// The following code is safe for cross-domain and same domain use.
// It ignores any custom properties that might be set on the DOMWindow (including a custom prototype).
entry = s_info.propHashTable(exec)->entry(exec, propertyName);
if (entry && !(entry->attributes() & Function) && entry->propertyGetter() == jsDOMWindowClosed) {
descriptor.setDescriptor(jsBoolean(true), ReadOnly | DontDelete | DontEnum);
return true;
}
entry = JSDOMWindowPrototype::s_info.propHashTable(exec)->entry(exec, propertyName);
if (entry && (entry->attributes() & Function) && entry->function() == jsDOMWindowPrototypeFunctionClose) {
PropertySlot slot;
slot.setCustom(this, nonCachingStaticFunctionGetter<jsDOMWindowPrototypeFunctionClose, 0>);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
descriptor.setUndefined();
return true;
}
entry = JSDOMWindow::s_info.propHashTable(exec)->entry(exec, propertyName);
if (entry) {
PropertySlot slot;
slot.setCustom(this, entry->propertyGetter());
descriptor.setDescriptor(slot.getValue(exec, propertyName), entry->attributes());
return true;
}
// Check for child frames by name before built-in properties to
// match Mozilla. This does not match IE, but some sites end up
// naming frames things that conflict with window properties that
// are in Moz but not IE. Since we have some of these, we have to do
// it the Moz way.
if (impl()->frame()->tree()->child(identifierToAtomicString(propertyName))) {
PropertySlot slot;
slot.setCustom(this, childFrameGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
bool ok;
unsigned i = propertyName.toArrayIndex(ok);
if (ok && i < impl()->frame()->tree()->childCount()) {
PropertySlot slot;
slot.setCustomIndex(this, i, indexGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
// Allow shortcuts like 'Image1' instead of document.images.Image1
Document* document = impl()->frame()->document();
if (document->isHTMLDocument()) {
AtomicStringImpl* atomicPropertyName = findAtomicString(propertyName);
if (atomicPropertyName && (static_cast<HTMLDocument*>(document)->hasNamedItem(atomicPropertyName) || document->hasElementWithId(atomicPropertyName))) {
PropertySlot slot;
slot.setCustom(this, namedItemGetter);
descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
return true;
}
}
return Base::getOwnPropertyDescriptor(exec, propertyName, descriptor);
}
