QT_BEGIN_NAMESPACE

/*!
    \internal

    \a mw is the new parent. all items in the layout will be a child of \a mw.
 */
void QGraphicsLayoutPrivate::reparentChildItems(QGraphicsItem *newParent)
{
    Q_Q(QGraphicsLayout);
    int n =  q->count();
    //bool mwVisible = mw && mw->isVisible();
    for (int i = 0; i < n; ++i) {
        QGraphicsLayoutItem *layoutChild = q->itemAt(i);
        if (!layoutChild) {
            // Skip stretch items
            continue;
        }
        if (layoutChild->isLayout()) {
            QGraphicsLayout *l = static_cast<QGraphicsLayout*>(layoutChild);
            l->d_func()->reparentChildItems(newParent);
        } else if (QGraphicsItem *itemChild = layoutChild->graphicsItem()){
            QGraphicsItem *childParent = itemChild->parentItem();
#ifdef QT_DEBUG
            if (childParent && childParent != newParent && itemChild->isWidget() && qt_graphicsLayoutDebug()) {
                QGraphicsWidget *w = static_cast<QGraphicsWidget*>(layoutChild);
                qWarning("QGraphicsLayout::addChildLayout: widget %s \"%s\" in wrong parent; moved to correct parent",
                         w->metaObject()->className(), w->objectName().toLocal8Bit().constData());
            }
#endif
            if (childParent != newParent)
                itemChild->setParentItem(newParent);
        }
    }
}
/*!
    \internal

    This function is called from subclasses to add a layout item \a layoutItem
    to a layout.

    It takes care of automatically reparenting graphics items, if needed.

    If \a layoutItem is a  is already in a layout, it will remove it  from that layout.

*/
void QGraphicsLayoutPrivate::addChildLayoutItem(QGraphicsLayoutItem *layoutItem)
{
    Q_Q(QGraphicsLayout);
    if (QGraphicsLayoutItem *maybeLayout = layoutItem->parentLayoutItem()) {
        if (maybeLayout->isLayout())
            removeLayoutItemFromLayout(static_cast<QGraphicsLayout*>(maybeLayout), layoutItem);
    }
    layoutItem->setParentLayoutItem(q);
    if (layoutItem->isLayout()) {
        if (QGraphicsItem *parItem = parentItem()) {
            static_cast<QGraphicsLayout*>(layoutItem)->d_func()->reparentChildItems(parItem);
        }
    } else {
        if (QGraphicsItem *item = layoutItem->graphicsItem()) {
            QGraphicsItem *newParent = parentItem();
            QGraphicsItem *oldParent = item->parentItem();
            if (oldParent == newParent || !newParent)
                return;

#ifdef QT_DEBUG
            if (oldParent && item->isWidget()) {
                QGraphicsWidget *w = static_cast<QGraphicsWidget*>(item);
                qWarning("QGraphicsLayout::addChildLayoutItem: %s \"%s\" in wrong parent; moved to correct parent",
                    w->metaObject()->className(), w->objectName().toLocal8Bit().constData());
            }
#endif

            item->setParentItem(newParent);
        }
    }
}
/*!
    \internal

    \a mw is the new parent. all items in the layout will be a child of \a mw.
 */
void QGraphicsLayoutPrivate::reparentChildWidgets(QGraphicsWidget *mw)
{
    Q_Q(QGraphicsLayout);
    int n =  q->count();
    //bool mwVisible = mw && mw->isVisible();
    for (int i = 0; i < n; ++i) {
        QGraphicsLayoutItem *item = q->itemAt(i);
        if (item->isLayout()) {
            QGraphicsLayout *l = static_cast<QGraphicsLayout*>(item);
            l->d_func()->reparentChildWidgets(mw);
        } else {
            QGraphicsWidget *w = static_cast<QGraphicsWidget*>(item);
            QGraphicsWidget *pw = w->parentWidget();
#ifdef QT_DEBUG
            if (pw && pw != mw && qt_graphicsLayoutDebug()) {
                qWarning("QGraphicsLayout::addChildLayout: widget %s \"%s\" in wrong parent; moved to correct parent",
                         w->metaObject()->className(), w->objectName().toLocal8Bit().constData());
            }
#endif
            //bool needShow = mwVisible && !(w->isHidden() && w->testAttribute(Qt::WA_WState_ExplicitShowHide));
            if (pw != mw)
                w->setParentItem(mw);
            //if (needShow)
            //    QMetaObject::invokeMethod(w, "_q_showIfNotHidden", Qt::QueuedConnection); //show later
        }
    }
}
void HbXmlLoaderBaseActions::addToObjectMap( QList<QGraphicsItem *> objects )
{
    for ( int i = 0; i < objects.size(); i++ ) {
        if ( objects.at(i)->isWidget() ) {
            QGraphicsWidget *widget = static_cast<QGraphicsWidget *>( objects.at(i) );
            ObjectMapItem item;
            item.mObject = widget;
            item.mType = HbXml::WIDGET;
            item.mOwned = false;
            mObjectMap.insert( widget->objectName(), item );
            addToObjectMap( widget->childItems() );
        }
    }    
}
bool 
MTester::isLayoutContains (
        QGraphicsLayout     *layout,
        QGraphicsLayoutItem *item)
{
    bool found = false;

    #if 0
    SYS_DEBUG ("*** layout = %p", layout);
    SYS_DEBUG ("*** item   = %p", item);
    SYS_DEBUG ("*** count  = %d", layout->count());
    #endif
    for (int n = 0; n < layout->count(); ++n) {
        QGraphicsLayoutItem *child = layout->itemAt (n);

        if (item == child)
            found = true;

        #if 0
        QGraphicsWidget* widget    = (QGraphicsWidget*) child; 
        SYS_DEBUG ("**********************************************");
        SYS_DEBUG ("*** child   = %p", child);
        SYS_DEBUG ("*** widget  = %p", child->graphicsItem ());
        SYS_DEBUG ("*** name    = %s", SYS_STR(widget->objectName()));
        #endif
    }

    if (!found) {
        QGraphicsWidget* widget = (QGraphicsWidget*) item;
        SYS_WARNING ("Layout at %p should contain widget %p/%s.",
                layout, 
                item,   
                SYS_STR(widget->objectName()));
    }

    return found;
}