/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
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** GNU Lesser General Public License Usage
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** 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
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** Please review the following information to ensure the GNU Lesser General
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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#ifndef MODEMANAGER_H
#define MODEMANAGER_H

#include <QtCore/QObject>
#include <coreplugin/core_global.h>

QT_BEGIN_NAMESPACE
class QAction;
QT_END_NAMESPACE

namespace Core {

class IMode;

namespace Internal {
    class MainWindow;
    class FancyTabWidget;
}

struct ModeManagerPrivate;

class CORE_EXPORT ModeManager : public QObject
{
    Q_OBJECT

public:
    explicit ModeManager(Internal::MainWindow *mainWindow, Internal::FancyTabWidget *modeStack);
    virtual ~ModeManager();

    void init();
    static ModeManager *instance();

    IMode *currentMode() const;
    IMode *mode(const QString &id) const;

    void addAction(QAction *action, int priority);
    void addProjectSelector(QAction *action);
    void addWidget(QWidget *widget);

    void activateModeType(const QString &type);

signals:
    void currentModeAboutToChange(Core::IMode *mode);

    // the default argument '=0' is important for connects without the oldMode argument.
    void currentModeChanged(Core::IMode *mode, Core::IMode *oldMode = 0);

public slots:
    void activateMode(const QString &id);
    void setFocusToCurrentMode();

private slots:
    void objectAdded(QObject *obj);
    void aboutToRemoveObject(QObject *obj);
    void currentTabAboutToChange(int index);
    void currentTabChanged(int index);
    void updateModeToolTip();
    void enabledStateChanged();

private:
    int indexOf(const QString &id) const;

    ModeManagerPrivate *d;
};

} // namespace Core

#endif // MODEMANAGER_H