bool JSDOMWindow::defineOwnProperty(JSC::JSObject* object, JSC::ExecState* exec, JSC::PropertyName propertyName, const JSC::PropertyDescriptor& descriptor, bool shouldThrow)
{
JSDOMWindow* thisObject = jsCast<JSDOMWindow*>(object);
// Only allow defining properties in this way by frames in the same origin, as it allows setters to be introduced.
if (!BindingSecurity::shouldAllowAccessToDOMWindow(exec, thisObject->wrapped(), ThrowSecurityError))
return false;
// Don't allow shadowing location using accessor properties.
if (descriptor.isAccessorDescriptor() && propertyName == Identifier::fromString(exec, "location"))
return false;
return Base::defineOwnProperty(thisObject, exec, propertyName, descriptor, shouldThrow);
}
bool JSCSSStyleDeclaration::getOwnPropertyDescriptorDelegate(JSC::ExecState* exec, JSC::PropertyName propertyIdentifier, JSC::PropertyDescriptor& descriptor)
{
CSSPropertyInfo propertyInfo = cssPropertyIDForJSCSSPropertyName(propertyIdentifier);
if (!propertyInfo.propertyID)
return false;
JSValue value;
if (propertyInfo.hadPixelOrPosPrefix)
value = cssPropertyGetterPixelOrPosPrefix(exec, this, propertyInfo.propertyID);
else
value = cssPropertyGetter(exec, this, propertyInfo.propertyID);
descriptor.setDescriptor(value, ReadOnly | DontDelete | DontEnum);
return true;
}
bool GlobalObject::getOwnPropertyDescriptor(JSC::ExecState* exec,
const JSC::Identifier& propertyName,
JSC::PropertyDescriptor& descriptor)
{
// Must match the logic of getOwnPropertySlot().
QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
if (propertyName == exec->propertyNames().arguments && engine->currentFrame->argumentCount() > 0) {
// ### Can we get rid of this special handling of the arguments property?
JSC::JSValue args = engine->scriptValueToJSCValue(engine->contextForFrame(engine->currentFrame)->argumentsObject());
descriptor.setValue(args);
return true;
}
if (customGlobalObject)
return customGlobalObject->getOwnPropertyDescriptor(exec, propertyName, descriptor);
return JSC::JSGlobalObject::getOwnPropertyDescriptor(exec, propertyName, descriptor);
}
bool ClassObjectDelegate::getOwnPropertyDescriptor(QScriptObject *object,
JSC::ExecState *exec,
const JSC::Identifier &propertyName,
JSC::PropertyDescriptor &descriptor)
{
QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
QScript::SaveFrameHelper saveFrame(engine, exec);
// for compatibility with the old back-end, normal JS properties
// are queried first.
if (QScriptObjectDelegate::getOwnPropertyDescriptor(object, exec, propertyName, descriptor))
return true;
QScriptValue scriptObject = engine->scriptValueFromJSCValue(object);
QScriptString scriptName;
QScriptStringPrivate scriptName_d(engine, propertyName, QScriptStringPrivate::StackAllocated);
QScriptStringPrivate::init(scriptName, &scriptName_d);
uint id = 0;
QScriptClass::QueryFlags qflags = m_scriptClass->queryProperty(
scriptObject, scriptName, QScriptClass::HandlesReadAccess, &id);
if (qflags & QScriptClass::HandlesReadAccess) {
QScriptValue::PropertyFlags pflags = m_scriptClass->propertyFlags(scriptObject, scriptName, id);
unsigned attribs = 0;
if (pflags & QScriptValue::ReadOnly)
attribs |= JSC::ReadOnly;
if (pflags & QScriptValue::SkipInEnumeration)
attribs |= JSC::DontEnum;
if (pflags & QScriptValue::Undeletable)
attribs |= JSC::DontDelete;
if (pflags & QScriptValue::PropertyGetter)
attribs |= JSC::Getter;
if (pflags & QScriptValue::PropertySetter)
attribs |= JSC::Setter;
attribs |= pflags & QScriptValue::UserRange;
// Rather than calling the getter, we could return an access descriptor here.
QScriptValue value = m_scriptClass->property(scriptObject, scriptName, id);
if (!value.isValid()) {
// The class claims to have the property, but returned an invalid
// value. Silently convert to undefined to avoid the invalid value
// "escaping" into JS.
value = QScriptValue(QScriptValue::UndefinedValue);
}
descriptor.setDescriptor(engine->scriptValueToJSCValue(value), attribs);
return true;
}
return false;
}
