/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
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** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** $QT_END_LICENSE$
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****************************************************************************/

#ifndef QMDIAREA_CONTAINER_H
#define QMDIAREA_CONTAINER_H

#include <QtDesigner/QDesignerContainerExtension>


#include <qdesigner_propertysheet_p.h>
#include <extensionfactory_p.h>

#include <QtWidgets/QMdiArea>

QT_BEGIN_NAMESPACE

namespace qdesigner_internal {

// Container for QMdiArea
class QMdiAreaContainer: public QObject, public QDesignerContainerExtension
{
    Q_OBJECT
    Q_INTERFACES(QDesignerContainerExtension)
public:
    explicit QMdiAreaContainer(QMdiArea *widget, QObject *parent = 0);

    virtual int count() const;
    virtual QWidget *widget(int index) const;
    virtual int currentIndex() const;
    virtual void setCurrentIndex(int index);
    virtual void addWidget(QWidget *widget);
    virtual void insertWidget(int index, QWidget *widget);
    virtual void remove(int index);

    // Semismart positioning of a new MDI child after cascading
    static void positionNewMdiChild(const QWidget *area, QWidget *mdiChild);

private:
    QMdiArea *m_mdiArea;
};

// PropertySheet for QMdiArea: Fakes window title and name.

class QMdiAreaPropertySheet: public QDesignerPropertySheet
{
    Q_OBJECT
    Q_INTERFACES(QDesignerPropertySheetExtension)
public:
    explicit QMdiAreaPropertySheet(QWidget *mdiArea, QObject *parent = 0);

    virtual void setProperty(int index, const QVariant &value);
    virtual bool reset(int index);
    virtual bool isEnabled(int index) const;
    virtual bool isChanged(int index) const;
    virtual QVariant property(int index) const;

    // Check whether the property is to be saved. Returns false for the page
    // properties (as the property sheet has no concept of 'stored')
    static bool checkProperty(const QString &propertyName);

private:
    const QString m_windowTitleProperty;
    QWidget *currentWindow() const;
    QDesignerPropertySheetExtension *currentWindowSheet() const;

    enum MdiAreaProperty { MdiAreaSubWindowName, MdiAreaSubWindowTitle, MdiAreaNone };
    static MdiAreaProperty mdiAreaProperty(const QString &name);
};

// Factories

typedef ExtensionFactory<QDesignerContainerExtension,  QMdiArea,  QMdiAreaContainer> QMdiAreaContainerFactory;
typedef QDesignerPropertySheetFactory<QMdiArea, QMdiAreaPropertySheet> QMdiAreaPropertySheetFactory;
}  // namespace qdesigner_internal

QT_END_NAMESPACE

#endif // QMDIAREA_CONTAINER_H
