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#include "qmlcomponentjs_p.h"
#include "qmlcomponentjs_p_p.h"
#include "qmlengine_p.h"
#include "qmlcomponent.h"

QT_BEGIN_NAMESPACE

QmlComponentJS::QmlComponentJS(QmlEngine *engine, QObject *parent)
    : QmlComponent(*(new QmlComponentJSPrivate), parent)
{
    Q_D(QmlComponentJS);
    d->engine = engine;
    connect(this, SIGNAL(statusChanged(QmlComponent::Status)),
            this, SLOT(statusChange(QmlComponent::Status)));
}

QmlComponentJS::QmlComponentJS(QmlEngine *engine, const QUrl &url, QObject *parent)
    : QmlComponent(*(new QmlComponentJSPrivate), parent)
{
    Q_D(QmlComponentJS);
    d->engine = engine;
    loadUrl(url);
    connect(this, SIGNAL(statusChanged(QmlComponent::Status)),
            this, SLOT(statusChange(QmlComponent::Status)));
}

void QmlComponentJS::setContext(QmlContext* c)
{
    Q_D(QmlComponentJS);
    d->ctxt =c;
}
/*!
    Create a script object instance from this component. Returns a null
    script object if creation failed. It will create the instance in the
    same context that it was created it. QmlComponentJS is only
    meant to be created from with script - C++ developers should just use
    QmlComponent directly.

    Similar to QmlComponent::create(), but creates an object suitable
    for usage within scripts.
*/
QScriptValue QmlComponentJS::createObject()
{
    Q_D(QmlComponentJS);
    QObject* ret = create(d->ctxt);
    return QmlEnginePrivate::qmlScriptObject(ret, d->engine);
}

/*!
    Return the list of errors that occured during the last compile or create
    operation, as a single string.  An empty string is returned if isError()
    is not set.

    This function is similar to errors(), except more useful when called from
    QML. C++ code should usually use errors().

    \sa errors()
*/
QString QmlComponentJS::errorsString() const
{
    Q_D(const QmlComponentJS);
    QString ret;
    if(!isError())
        return ret;
    foreach(const QmlError &e, d->errors) {
        ret += e.url().toString() + QLatin1String(":") + 
               QString::number(e.line()) + QLatin1String(" ") + 
               e.description() + QLatin1String("\n");
    }
    return ret;
}


void QmlComponentJS::statusChange(QmlComponent::Status newStatus)
{
    Q_D(QmlComponentJS);
    if(newStatus == d->prevStatus)
        return;
    if(newStatus == QmlComponent::Null || d->prevStatus == QmlComponent::Null)
        emit isNullChanged();
    if(newStatus == QmlComponent::Ready || d->prevStatus == QmlComponent::Ready)
        emit isReadyChanged();
    if(newStatus == QmlComponent::Loading || d->prevStatus == QmlComponent::Loading)
        emit isLoadingChanged();
    if(newStatus == QmlComponent::Error || d->prevStatus == QmlComponent::Error)
        emit isErrorChanged();
    d->prevStatus = newStatus;
}

QT_END_NAMESPACE