qdeclarativeglobalscriptclass.cpp

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#include "private/qdeclarativeglobalscriptclass_p.h"

#include <QtCore/qstringlist.h>
#include <QtCore/qvector.h>
#include <QtScript/qscriptstring.h>
#include <QtScript/qscriptengine.h>
#include <QtScript/qscriptvalueiterator.h>

#include <private/qscriptdeclarativeclass_p.h>

QT_BEGIN_NAMESPACE

/*
    Used to prevent any writes to the global object.
*/
QDeclarativeGlobalScriptClass::QDeclarativeGlobalScriptClass(QScriptEngine *engine)
: QScriptClass(engine)
{
    QString eval = QLatin1String("eval");
    QString version = QLatin1String("version");

    QScriptValue originalGlobalObject = engine->globalObject();

    QScriptValue newGlobalObject = engine->newObject();

    {
        QScriptValueIterator iter(originalGlobalObject);
        QVector<QString> names;
        QVector<QScriptValue> values;
        QVector<QScriptValue::PropertyFlags> flags;
        while (iter.hasNext()) {
            iter.next();

            QString name = iter.name();

            if (name == version)
                continue;

            if (name != eval) {
                names.append(name);
                values.append(iter.value());
                flags.append(iter.flags() | QScriptValue::Undeletable);
            }
            newGlobalObject.setProperty(iter.scriptName(), iter.value());

            m_illegalNames.insert(name);
        }
        m_staticGlobalObject = QScriptDeclarativeClass::newStaticScopeObject(
            engine, names.size(), names.constData(), values.constData(), flags.constData());
    }

    newGlobalObject.setScriptClass(this);
    engine->setGlobalObject(newGlobalObject);
}

QScriptClass::QueryFlags 
QDeclarativeGlobalScriptClass::queryProperty(const QScriptValue &object,
                                    const QScriptString &name,
                                    QueryFlags flags, uint *id)
{
    Q_UNUSED(object);
    Q_UNUSED(name);
    Q_UNUSED(flags);
    Q_UNUSED(id);
    return HandlesWriteAccess;
}

void QDeclarativeGlobalScriptClass::setProperty(QScriptValue &object, 
                                       const QScriptString &name,
                                       uint id, const QScriptValue &value)
{
    Q_UNUSED(object);
    Q_UNUSED(id);
    Q_UNUSED(value);
    QString error = QLatin1String("Invalid write to global property \"") + 
                    name.toString() + QLatin1Char('\"');
    engine()->currentContext()->throwError(error);
}

/* This method is for the use of tst_qdeclarativeecmascript::callQtInvokables() only */
void QDeclarativeGlobalScriptClass::explicitSetProperty(const QStringList &names, const QList<QScriptValue> &values)
{
    Q_ASSERT(names.count() == values.count());
    QScriptValue globalObject = engine()->globalObject();

    QScriptValue v = engine()->newObject();

    QScriptValueIterator iter(v);
    while (iter.hasNext()) {
        iter.next();
        v.setProperty(iter.scriptName(), iter.value());
    }

    for (int ii = 0; ii < names.count(); ++ii) {
        const QString &name = names.at(ii);
        const QScriptValue &value = values.at(ii);
        v.setProperty(name, value);
    }

    v.setScriptClass(this);

    engine()->setGlobalObject(v);
}

QT_END_NAMESPACE