/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
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** Software or, alternatively, in accordance with the terms contained in
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** 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
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#ifndef MODEMANAGER_H
#define MODEMANAGER_H

#include <QtCore/QObject>
#include <QtCore/QList>
#include <QtCore/QMap>
#include <QtCore/QVector>

#include <coreplugin/core_global.h>

QT_BEGIN_NAMESPACE
class QAction;
class QSignalMapper;
class QMenu;
QT_END_NAMESPACE

namespace Core {

class Command;
class IMode;

namespace Internal {
class FancyTabWidget;
class FancyActionBar;
class FancyConfigButton;
class MainWindow;
} // namespace Internal

class CORE_EXPORT ModeManager : public QObject
{
    Q_OBJECT

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

    void init();
    static ModeManager *instance() { return m_instance; }

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

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

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;

    static ModeManager *m_instance;
    Internal::MainWindow *m_mainWindow;
    Internal::FancyTabWidget *m_modeStack;
    Internal::FancyActionBar *m_actionBar;
    QMap<Command*, int> m_actions;
    QVector<IMode*> m_modes;
    QVector<Command*> m_modeShortcuts;
    QSignalMapper *m_signalMapper;
    QList<int> m_addedContexts;
    int m_oldCurrent;
};

} // namespace Core

#endif // MODEMANAGER_H
