diff options
Diffstat (limited to 'src/script/bridge/qscriptqobject.cpp')
| -rw-r--r-- | src/script/bridge/qscriptqobject.cpp | 154 |
1 files changed, 150 insertions, 4 deletions
diff --git a/src/script/bridge/qscriptqobject.cpp b/src/script/bridge/qscriptqobject.cpp index 63ba9ec..db312bc 100644 --- a/src/script/bridge/qscriptqobject.cpp +++ b/src/script/bridge/qscriptqobject.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** @@ -978,7 +978,8 @@ JSC::JSValue QtFunction::execute(JSC::ExecState *exec, JSC::JSValue thisValue, QScriptObjectDelegate *delegate = scriptObject->delegate(); Q_ASSERT(delegate && (delegate->type() == QScriptObjectDelegate::QtObject)); QObject *qobj = static_cast<QScript::QObjectDelegate*>(delegate)->value(); - Q_ASSERT_X(qobj != 0, "QtFunction::call", "handle the case when QObject has been deleted"); + if (!qobj) + return JSC::throwError(exec, JSC::GeneralError, QString::fromLatin1("cannot call function of deleted QObject")); QScriptEnginePrivate *engine = scriptEngineFromExec(exec); const QMetaObject *meta = qobj->metaObject(); @@ -1173,6 +1174,7 @@ bool QObjectDelegate::getOwnPropertySlot(QScriptObject *object, JSC::ExecState * const JSC::Identifier &propertyName, JSC::PropertySlot &slot) { + //Note: this has to be kept in sync with getOwnPropertyDescriptor #ifndef QT_NO_PROPERTIES QByteArray name = QString(propertyName.ustring()).toLatin1(); QObject *qobject = data->value; @@ -1285,6 +1287,142 @@ bool QObjectDelegate::getOwnPropertySlot(QScriptObject *object, JSC::ExecState * #endif //QT_NO_PROPERTIES } + +bool QObjectDelegate::getOwnPropertyDescriptor(QScriptObject *object, JSC::ExecState *exec, + const JSC::Identifier &propertyName, + JSC::PropertyDescriptor &descriptor) +{ + //Note: this has to be kept in sync with getOwnPropertySlot abd getPropertyAttributes +#ifndef QT_NO_PROPERTIES + QByteArray name = QString(propertyName.ustring()).toLatin1(); + QObject *qobject = data->value; + if (!qobject) { + QString message = QString::fromLatin1("cannot access member `%0' of deleted QObject") + .arg(QString::fromLatin1(name)); + descriptor.setValue(JSC::throwError(exec, JSC::GeneralError, message)); + return true; + } + + const QScriptEngine::QObjectWrapOptions &opt = data->options; + + const QMetaObject *meta = qobject->metaObject(); + { + QHash<QByteArray, JSC::JSValue>::const_iterator it = data->cachedMembers.constFind(name); + if (it != data->cachedMembers.constEnd()) { + int index; + if (GeneratePropertyFunctions && ((index = meta->indexOfProperty(name)) != -1)) { + QMetaProperty prop = meta->property(index); + descriptor.setAccessorDescriptor(it.value(), it.value(), flagsForMetaProperty(prop)); + if (!prop.isWritable()) + descriptor.setWritable(false); + } else { + unsigned attributes = QObjectMemberAttribute; + if (opt & QScriptEngine::SkipMethodsInEnumeration) + attributes |= JSC::DontEnum; + descriptor.setDescriptor(it.value(), attributes); + } + return true; + } + } + + QScriptEnginePrivate *eng = scriptEngineFromExec(exec); + int index = -1; + if (name.contains('(')) { + QByteArray normalized = QMetaObject::normalizedSignature(name); + if (-1 != (index = meta->indexOfMethod(normalized))) { + QMetaMethod method = meta->method(index); + if (hasMethodAccess(method, index, opt)) { + if (!(opt & QScriptEngine::ExcludeSuperClassMethods) + || (index >= meta->methodOffset())) { + QtFunction *fun = new (exec)QtFunction( + object, index, /*maybeOverloaded=*/false, + &exec->globalData(), eng->originalGlobalObject()->functionStructure(), + propertyName); + data->cachedMembers.insert(name, fun); + unsigned attributes = QObjectMemberAttribute; + if (opt & QScriptEngine::SkipMethodsInEnumeration) + attributes |= JSC::DontEnum; + descriptor.setDescriptor(fun, attributes); + return true; + } + } + } + } + + index = meta->indexOfProperty(name); + if (index != -1) { + QMetaProperty prop = meta->property(index); + if (prop.isScriptable()) { + if (!(opt & QScriptEngine::ExcludeSuperClassProperties) + || (index >= meta->propertyOffset())) { + unsigned attributes = flagsForMetaProperty(prop); + if (GeneratePropertyFunctions) { + QtPropertyFunction *fun = new (exec)QtPropertyFunction( + meta, index, &exec->globalData(), + eng->originalGlobalObject()->functionStructure(), + propertyName); + data->cachedMembers.insert(name, fun); + descriptor.setAccessorDescriptor(fun, fun, attributes); + if (attributes & JSC::ReadOnly) + descriptor.setWritable(false); + } else { + JSC::JSValue val; + if (!prop.isValid()) + val = JSC::jsUndefined(); + else + val = eng->jscValueFromVariant(prop.read(qobject)); + descriptor.setDescriptor(val, attributes); + } + return true; + } + } + } + + index = qobject->dynamicPropertyNames().indexOf(name); + if (index != -1) { + JSC::JSValue val = eng->jscValueFromVariant(qobject->property(name)); + descriptor.setDescriptor(val, QObjectMemberAttribute); + return true; + } + + const int offset = (opt & QScriptEngine::ExcludeSuperClassMethods) + ? meta->methodOffset() : 0; + for (index = meta->methodCount() - 1; index >= offset; --index) { + QMetaMethod method = meta->method(index); + if (hasMethodAccess(method, index, opt) + && (methodName(method) == name)) { + QtFunction *fun = new (exec)QtFunction( + object, index, /*maybeOverloaded=*/true, + &exec->globalData(), eng->originalGlobalObject()->functionStructure(), + propertyName); + unsigned attributes = QObjectMemberAttribute; + if (opt & QScriptEngine::SkipMethodsInEnumeration) + attributes |= JSC::DontEnum; + descriptor.setDescriptor(fun, attributes); + data->cachedMembers.insert(name, fun); + return true; + } + } + + if (!(opt & QScriptEngine::ExcludeChildObjects)) { + QList<QObject*> children = qobject->children(); + for (index = 0; index < children.count(); ++index) { + QObject *child = children.at(index); + if (child->objectName() == QString(propertyName.ustring())) { + QScriptEngine::QObjectWrapOptions opt = QScriptEngine::PreferExistingWrapperObject; + QScriptValue tmp = QScriptEnginePrivate::get(eng)->newQObject(child, QScriptEngine::QtOwnership, opt); + descriptor.setDescriptor(eng->scriptValueToJSCValue(tmp), JSC::ReadOnly | JSC::DontDelete | JSC::DontEnum); + return true; + } + } + } + + return QScriptObjectDelegate::getOwnPropertyDescriptor(object, exec, propertyName, descriptor); +#else //QT_NO_PROPERTIES + return false; +#endif //QT_NO_PROPERTIES +} + void QObjectDelegate::put(QScriptObject *object, JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSValue value, JSC::PutPropertySlot &slot) @@ -1437,7 +1575,7 @@ bool QObjectDelegate::getPropertyAttributes(const QScriptObject *object, unsigned &attributes) const { #ifndef QT_NO_PROPERTIES - // ### try to avoid duplicating logic from getOwnPropertySlot() + //Note: this has to be kept in sync with getOwnPropertyDescriptor and getOwnPropertySlot QByteArray name = ((QString)propertyName.ustring()).toLatin1(); QObject *qobject = data->value; if (!qobject) @@ -1688,6 +1826,7 @@ QObjectPrototype::QObjectPrototype(JSC::ExecState* exec, WTF::PassRefPtr<JSC::St putDirectFunction(exec, new (exec) JSC::PrototypeFunction(exec, prototypeFunctionStructure, /*length=*/0, exec->propertyNames().toString, qobjectProtoFuncToString), JSC::DontEnum); putDirectFunction(exec, new (exec) JSC::PrototypeFunction(exec, prototypeFunctionStructure, /*length=*/1, JSC::Identifier(exec, "findChild"), qobjectProtoFuncFindChild), JSC::DontEnum); putDirectFunction(exec, new (exec) JSC::PrototypeFunction(exec, prototypeFunctionStructure, /*length=*/1, JSC::Identifier(exec, "findChildren"), qobjectProtoFuncFindChildren), JSC::DontEnum); + this->structure()->setHasGetterSetterProperties(true); } const JSC::ClassInfo QMetaObjectWrapperObject::info = { "QMetaObject", 0, 0, 0 }; @@ -2081,7 +2220,14 @@ void QObjectConnectionManager::execute(int slotIndex, void **argv) JSC::call(exec, slot, callType, callData, thisObject, jscArgs); if (exec->hadException()) { - engine->emitSignalHandlerException(); + if (slot.inherits(&QtFunction::info) && !static_cast<QtFunction*>(JSC::asObject(slot))->qobject()) { + // The function threw an error because the target QObject has been deleted. + // The connections list is stale; remove the signal handler and ignore the exception. + removeSignalHandler(sender(), signalIndex, receiver, slot); + exec->clearException(); + } else { + engine->emitSignalHandlerException(); + } } } |