/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** 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
** conditions see http://qt.digia.com/licensing.  For further information
** 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 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
** will be met: 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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****************************************************************************/

#ifndef NAVIGATIONWIDGET_H
#define NAVIGATIONWIDGET_H

#include <coreplugin/minisplitter.h>
#include <coreplugin/id.h>

#include <QHash>

QT_BEGIN_NAMESPACE
class QSettings;
class QShortcut;
class QAbstractItemModel;
class QStandardItemModel;
QT_END_NAMESPACE

namespace Core {
class INavigationWidgetFactory;
class IMode;
class Command;
class NavigationWidget;
struct NavigationWidgetPrivate;
namespace Internal {
class NavigationSubWidget;
}

class CORE_EXPORT NavigationWidgetPlaceHolder : public QWidget
{
    Q_OBJECT
    friend class Core::NavigationWidget;

public:
    explicit NavigationWidgetPlaceHolder(Core::IMode *mode, QWidget *parent = 0);
    virtual ~NavigationWidgetPlaceHolder();
    static NavigationWidgetPlaceHolder* current();
    void applyStoredSize(int width);

private slots:
    void currentModeAboutToChange(Core::IMode *);

private:
    Core::IMode *m_mode;
    static NavigationWidgetPlaceHolder* m_current;
};

class CORE_EXPORT NavigationWidget : public MiniSplitter
{
    Q_OBJECT

public:
    enum FactoryModelRoles {
        FactoryObjectRole = Qt::UserRole,
        FactoryIdRole,
        FactoryPriorityRole
    };

    explicit NavigationWidget(QAction *toggleSideBarAction);
    virtual ~NavigationWidget();

    void setFactories(const QList<INavigationWidgetFactory*> factories);

    void saveSettings(QSettings *settings);
    void restoreSettings(QSettings *settings);

    void activateSubWidget(const Id &factoryId);
    void closeSubWidgets();

    bool isShown() const;
    void setShown(bool b);

    bool isSuppressed() const;
    void setSuppressed(bool b);

    static NavigationWidget* instance();

    int storedWidth();

    // Called from the place holders
    void placeHolderChanged(NavigationWidgetPlaceHolder *holder);

    QHash<Id, Core::Command *> commandMap() const;
    QAbstractItemModel *factoryModel() const;

protected:
    void resizeEvent(QResizeEvent *);

private slots:
    void activateSubWidget();
    void splitSubWidget();
    void closeSubWidget();

private:
    void updateToggleText();
    Internal::NavigationSubWidget *insertSubItem(int position, int index);
    int factoryIndex(const Id &id);

    NavigationWidgetPrivate *d;
};

} // namespace Core

#endif // NAVIGATIONWIDGET_H