/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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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** additional rights. These rights are described in the Nokia Qt LGPL
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** package.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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**
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****************************************************************************/

#ifndef QTABBAR_H
#define QTABBAR_H

#include <QtGui/qwidget.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

#ifndef QT_NO_TABBAR

class QIcon;
class QTabBarPrivate;
class QStyleOptionTab;

class Q_GUI_EXPORT QTabBar: public QWidget
{
    Q_OBJECT

    Q_ENUMS(Shape)
    Q_PROPERTY(Shape shape READ shape WRITE setShape)
    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentChanged)
    Q_PROPERTY(int count READ count)
    Q_PROPERTY(bool drawBase READ drawBase WRITE setDrawBase)
    Q_PROPERTY(QSize iconSize READ iconSize WRITE setIconSize)
    Q_PROPERTY(Qt::TextElideMode elideMode READ elideMode WRITE setElideMode)
    Q_PROPERTY(bool usesScrollButtons READ usesScrollButtons WRITE setUsesScrollButtons)
    Q_PROPERTY(bool tabsClosable READ tabsClosable WRITE setTabsClosable)
    Q_PROPERTY(SelectionBehavior selectionBehaviorOnRemove READ selectionBehaviorOnRemove WRITE setSelectionBehaviorOnRemove)
    Q_PROPERTY(bool expanding READ expanding WRITE setExpanding)
    Q_PROPERTY(bool movable READ isMovable WRITE setMovable)
    Q_PROPERTY(bool documentMode READ documentMode WRITE setDocumentMode)

public:
    explicit QTabBar(QWidget* parent=0);
    ~QTabBar();

    enum Shape { RoundedNorth, RoundedSouth, RoundedWest, RoundedEast,
                 TriangularNorth, TriangularSouth, TriangularWest, TriangularEast
#if defined(QT3_SUPPORT) && !defined(Q_MOC_RUN)
                , RoundedAbove = RoundedNorth, RoundedBelow = RoundedSouth,
                TriangularAbove = TriangularNorth, TriangularBelow = TriangularSouth
#endif
    };

    enum ButtonPosition {
        LeftSide,
        RightSide
    };

    enum SelectionBehavior {
        SelectLeftTab,
        SelectRightTab,
        SelectPreviousTab
    };

    Shape shape() const;
    void setShape(Shape shape);

    int addTab(const QString &text);
    int addTab(const QIcon &icon, const QString &text);

    int insertTab(int index, const QString &text);
    int insertTab(int index, const QIcon&icon, const QString &text);

    void removeTab(int index);
    void moveTab(int from, int to);

    bool isTabEnabled(int index) const;
    void setTabEnabled(int index, bool);

    QString tabText(int index) const;
    void setTabText(int index, const QString &text);

    QColor tabTextColor(int index) const;
    void setTabTextColor(int index, const QColor &color);

    QIcon tabIcon(int index) const;
    void setTabIcon(int index, const QIcon &icon);

    Qt::TextElideMode elideMode() const;
    void setElideMode(Qt::TextElideMode);

#ifndef QT_NO_TOOLTIP
    void setTabToolTip(int index, const QString &tip);
    QString tabToolTip(int index) const;
#endif

#ifndef QT_NO_WHATSTHIS
    void setTabWhatsThis(int index, const QString &text);
    QString tabWhatsThis(int index) const;
#endif

    void setTabData(int index, const QVariant &data);
    QVariant tabData(int index) const;

    QRect tabRect(int index) const;
    int tabAt(const QPoint &pos) const;

    int currentIndex() const;
    int count() const;

    QSize sizeHint() const;
    QSize minimumSizeHint() const;

    void setDrawBase(bool drawTheBase);
    bool drawBase() const;

    QSize iconSize() const;
    void setIconSize(const QSize &size);

    bool usesScrollButtons() const;
    void setUsesScrollButtons(bool useButtons);

    bool tabsClosable() const;
    void setTabsClosable(bool closable);

    void setTabButton(int index, ButtonPosition position, QWidget *widget);
    QWidget *tabButton(int index, ButtonPosition position) const;

    SelectionBehavior selectionBehaviorOnRemove() const;
    void setSelectionBehaviorOnRemove(SelectionBehavior behavior);

    bool expanding() const;
    void setExpanding(bool enabled);

    bool isMovable() const;
    void setMovable(bool movable);

    bool documentMode() const;
    void setDocumentMode(bool set);

public Q_SLOTS:
    void setCurrentIndex(int index);

Q_SIGNALS:
    void currentChanged(int index);
    void tabCloseRequested(int index);
    void tabMoved(int from, int to);

protected:
    virtual QSize tabSizeHint(int index) const;
    virtual void tabInserted(int index);
    virtual void tabRemoved(int index);
    virtual void tabLayoutChange();

    bool event(QEvent *);
    void resizeEvent(QResizeEvent *);
    void showEvent(QShowEvent *);
    void hideEvent(QHideEvent *);
    void paintEvent(QPaintEvent *);
    void mousePressEvent (QMouseEvent *);
    void mouseMoveEvent (QMouseEvent *);
    void mouseReleaseEvent (QMouseEvent *);
#ifndef QT_NO_WHEELEVENT
    void wheelEvent(QWheelEvent *event);
#endif
    void keyPressEvent(QKeyEvent *);
    void changeEvent(QEvent *);
    void initStyleOption(QStyleOptionTab *option, int tabIndex) const;

#ifdef QT3_SUPPORT
public Q_SLOTS:
    QT_MOC_COMPAT void setCurrentTab(int index) { setCurrentIndex(index); }
Q_SIGNALS:
    QT_MOC_COMPAT void selected(int);
#endif

    friend class QAccessibleTabBar;
private:
    Q_DISABLE_COPY(QTabBar)
    Q_DECLARE_SCOPED_PRIVATE(QTabBar)
    Q_PRIVATE_SLOT(d_func(), void _q_scrollTabs())
    Q_PRIVATE_SLOT(d_func(), void _q_closeTab())
};

#endif // QT_NO_TABBAR

QT_END_NAMESPACE

QT_END_HEADER

#endif // QTABBAR_H