/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/

#ifndef WIZARD_H
#define WIZARD_H

#include "utils_global.h"

#include <QWizard>

namespace Utils {

class Wizard;
class WizardProgress;
class WizardPrivate;

class QTCREATOR_UTILS_EXPORT Wizard : public QWizard
{
    Q_OBJECT
    Q_PROPERTY(bool automaticProgressCreationEnabled READ isAutomaticProgressCreationEnabled WRITE setAutomaticProgressCreationEnabled)

public:
    explicit Wizard(QWidget *parent = 0, Qt::WindowFlags flags = 0);
    virtual ~Wizard();

    bool isAutomaticProgressCreationEnabled() const;
    void setAutomaticProgressCreationEnabled(bool enabled);

    void setStartId(int pageId);

    WizardProgress *wizardProgress() const;
    virtual bool validateCurrentPage();

signals:
    void nextClicked(); /* workaround for QWizard behavior where page->initialize is
                         * called before currentIdChanged */

private slots:
    void _q_currentPageChanged(int pageId);
    void _q_pageAdded(int pageId);
    void _q_pageRemoved(int pageId);

private:
    Q_DECLARE_PRIVATE(Wizard)

    class WizardPrivate *d_ptr;
};

class WizardProgressItem;
class WizardProgressPrivate;

class QTCREATOR_UTILS_EXPORT WizardProgress : public QObject
{
    Q_OBJECT

public:
    WizardProgress(QObject *parent = 0);
    ~WizardProgress();

    WizardProgressItem *addItem(const QString &title);
    void removeItem(WizardProgressItem *item);

    void removePage(int pageId);

    QList<int> pages(WizardProgressItem *item) const;
    WizardProgressItem *item(int pageId) const;

    WizardProgressItem *currentItem() const;

    QList<WizardProgressItem *> items() const;

    WizardProgressItem *startItem() const;

    QList<WizardProgressItem *> visitedItems() const;
    QList<WizardProgressItem *> directlyReachableItems() const;
    bool isFinalItemDirectlyReachable() const; // return  availableItems().last()->isFinalItem();

Q_SIGNALS:
    void currentItemChanged(WizardProgressItem *item);

    void itemChanged(WizardProgressItem *item); // contents of the item: title or icon
    void itemAdded(WizardProgressItem *item);
    void itemRemoved(WizardProgressItem *item);
    void nextItemsChanged(WizardProgressItem *item, const QList<WizardProgressItem *> &items);
    void nextShownItemChanged(WizardProgressItem *item, WizardProgressItem *nextShownItem);
    void startItemChanged(WizardProgressItem *item);

private:
    void setCurrentPage(int pageId);
    void setStartPage(int pageId);

private:
    friend class Wizard;
    friend class WizardProgressItem;

    Q_DECLARE_PRIVATE(WizardProgress)

    class WizardProgressPrivate *d_ptr;
};

class WizardProgressItemPrivate;

class QTCREATOR_UTILS_EXPORT WizardProgressItem // managed by WizardProgress
{

public:
    void addPage(int pageId);
    QList<int> pages() const;
    void setNextItems(const QList<WizardProgressItem *> &items);
    QList<WizardProgressItem *> nextItems() const;
    void setNextShownItem(WizardProgressItem *item);
    WizardProgressItem *nextShownItem() const;
    bool isFinalItem() const; // return nextItems().isEmpty();

    void setTitle(const QString &title);
    QString title() const;
    void setTitleWordWrap(bool wrap);
    bool titleWordWrap() const;

protected:
    WizardProgressItem(WizardProgress *progress, const QString &title);
    virtual ~WizardProgressItem();

private:
    friend class WizardProgress;

    Q_DECLARE_PRIVATE(WizardProgressItem)

    class WizardProgressItemPrivate *d_ptr;
};

} // namespace Utils

#endif // WIZARD_H