/****************************************************************************
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the Qt Designer of the Qt Toolkit.
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** this package.
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** $QT_END_LICENSE$
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****************************************************************************/

#include "default_layoutdecoration.h"
#include "qlayout_widget_p.h"

#include <layoutinfo_p.h>

#include <QtDesigner/QDesignerMetaDataBaseItemInterface>
#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerFormEditorInterface>

QT_BEGIN_NAMESPACE

namespace qdesigner_internal {

// ---- QDesignerLayoutDecorationFactory ----
QDesignerLayoutDecorationFactory::QDesignerLayoutDecorationFactory(QExtensionManager *parent)
    : QExtensionFactory(parent)
{
}

QObject *QDesignerLayoutDecorationFactory::createExtension(QObject *object, const QString &iid, QObject *parent) const
{
    if (!object->isWidgetType() || iid != Q_TYPEID(QDesignerLayoutDecorationExtension))
        return 0;

    QWidget *widget = qobject_cast<QWidget*>(object);

    if (const QLayoutWidget *layoutWidget = qobject_cast<const QLayoutWidget*>(widget))
        return QLayoutSupport::createLayoutSupport(layoutWidget->formWindow(), widget, parent);

    if (QDesignerFormWindowInterface *fw = QDesignerFormWindowInterface::findFormWindow(widget))
        if (LayoutInfo::managedLayout(fw->core(), widget))
            return QLayoutSupport::createLayoutSupport(fw, widget, parent);

    return 0;
}
}

QT_END_NAMESPACE