/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtDeclarative 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 Technology Preview License Agreement accompanying

** this package.

**

** 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, 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.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

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** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QDECLARATIVELISTVIEW_H

#define QDECLARATIVELISTVIEW_H

#include "private/qdeclarativeflickable_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class Q_AUTOTEST_EXPORT QDeclarativeViewSection : public QObject

{

    Q_OBJECT

    Q_PROPERTY(QString property READ property WRITE setProperty NOTIFY changed)

    Q_PROPERTY(SectionCriteria criteria READ criteria WRITE setCriteria NOTIFY changed)

    Q_PROPERTY(QDeclarativeComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)

    Q_ENUMS(SectionCriteria)

public:

    QDeclarativeViewSection(QObject *parent=0) : QObject(parent), m_criteria(FullString), m_delegate(0) {}

    QString property() const { return m_property; }

    void setProperty(const QString &);

    enum SectionCriteria { FullString, FirstCharacter };

    SectionCriteria criteria() const { return m_criteria; }

    void setCriteria(SectionCriteria);

    QDeclarativeComponent *delegate() const { return m_delegate; }

    void setDelegate(QDeclarativeComponent *delegate);

    QString sectionString(const QString &value);

Q_SIGNALS:

    void changed();

    void delegateChanged();

private:

    QString m_property;

    SectionCriteria m_criteria;

    QDeclarativeComponent *m_delegate;

};

class QDeclarativeVisualModel;

class QDeclarativeListViewAttached;

class QDeclarativeListViewPrivate;

class Q_AUTOTEST_EXPORT QDeclarativeListView : public QDeclarativeFlickable

{

    Q_OBJECT

    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeListView)

    Q_PROPERTY(QVariant model READ model WRITE setModel NOTIFY modelChanged)

    Q_PROPERTY(QDeclarativeComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)

    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)

    Q_PROPERTY(QDeclarativeItem *currentItem READ currentItem NOTIFY currentIndexChanged)

    Q_PROPERTY(int count READ count NOTIFY countChanged)

    Q_PROPERTY(QDeclarativeComponent *highlight READ highlight WRITE setHighlight NOTIFY highlightChanged)

    Q_PROPERTY(QDeclarativeItem *highlightItem READ highlightItem NOTIFY highlightItemChanged)

    Q_PROPERTY(bool highlightFollowsCurrentItem READ highlightFollowsCurrentItem WRITE setHighlightFollowsCurrentItem NOTIFY highlightFollowsCurrentItemChanged)

    Q_PROPERTY(qreal highlightMoveSpeed READ highlightMoveSpeed WRITE setHighlightMoveSpeed NOTIFY highlightMoveSpeedChanged)

    Q_PROPERTY(int highlightMoveDuration READ highlightMoveDuration WRITE setHighlightMoveDuration NOTIFY highlightMoveDurationChanged)

    Q_PROPERTY(qreal highlightResizeSpeed READ highlightResizeSpeed WRITE setHighlightResizeSpeed NOTIFY highlightResizeSpeedChanged)

    Q_PROPERTY(int highlightResizeDuration READ highlightResizeDuration WRITE setHighlightResizeDuration NOTIFY highlightResizeDurationChanged)

    Q_PROPERTY(qreal preferredHighlightBegin READ preferredHighlightBegin WRITE setPreferredHighlightBegin NOTIFY preferredHighlightBeginChanged)

    Q_PROPERTY(qreal preferredHighlightEnd READ preferredHighlightEnd WRITE setPreferredHighlightEnd NOTIFY preferredHighlightEndChanged)

    Q_PROPERTY(HighlightRangeMode highlightRangeMode READ highlightRangeMode WRITE setHighlightRangeMode NOTIFY highlightRangeModeChanged)

    Q_PROPERTY(qreal spacing READ spacing WRITE setSpacing NOTIFY spacingChanged)

    Q_PROPERTY(Orientation orientation READ orientation WRITE setOrientation NOTIFY orientationChanged)

    Q_PROPERTY(bool keyNavigationWraps READ isWrapEnabled WRITE setWrapEnabled NOTIFY keyNavigationWrapsChanged)

    Q_PROPERTY(int cacheBuffer READ cacheBuffer WRITE setCacheBuffer NOTIFY cacheBufferChanged)

    Q_PROPERTY(QDeclarativeViewSection *section READ sectionCriteria CONSTANT)

    Q_PROPERTY(QString currentSection READ currentSection NOTIFY currentSectionChanged)

    Q_PROPERTY(SnapMode snapMode READ snapMode WRITE setSnapMode NOTIFY snapModeChanged)

    Q_PROPERTY(QDeclarativeComponent *header READ header WRITE setHeader NOTIFY headerChanged)

    Q_PROPERTY(QDeclarativeComponent *footer READ footer WRITE setFooter NOTIFY footerChanged)

    Q_ENUMS(HighlightRangeMode)

    Q_ENUMS(Orientation)

    Q_ENUMS(SnapMode)

    Q_ENUMS(PositionMode)

    Q_CLASSINFO("DefaultProperty", "data")

public:

    QDeclarativeListView(QDeclarativeItem *parent=0);

    ~QDeclarativeListView();

    QVariant model() const;

    void setModel(const QVariant &);

    QDeclarativeComponent *delegate() const;

    void setDelegate(QDeclarativeComponent *);

    int currentIndex() const;

    void setCurrentIndex(int idx);

    QDeclarativeItem *currentItem();

    QDeclarativeItem *highlightItem();

    int count() const;

    QDeclarativeComponent *highlight() const;

    void setHighlight(QDeclarativeComponent *highlight);

    bool highlightFollowsCurrentItem() const;

    void setHighlightFollowsCurrentItem(bool);

    enum HighlightRangeMode { NoHighlightRange, ApplyRange, StrictlyEnforceRange };

    HighlightRangeMode highlightRangeMode() const;

    void setHighlightRangeMode(HighlightRangeMode mode);

    qreal preferredHighlightBegin() const;

    void setPreferredHighlightBegin(qreal);

    qreal preferredHighlightEnd() const;

    void setPreferredHighlightEnd(qreal);

    qreal spacing() const;

    void setSpacing(qreal spacing);

    enum Orientation { Horizontal = Qt::Horizontal, Vertical = Qt::Vertical };

    Orientation orientation() const;

    void setOrientation(Orientation);

    bool isWrapEnabled() const;

    void setWrapEnabled(bool);

    int cacheBuffer() const;

    void setCacheBuffer(int);

    QDeclarativeViewSection *sectionCriteria();

    QString currentSection() const;

    qreal highlightMoveSpeed() const;

    void setHighlightMoveSpeed(qreal);

    int highlightMoveDuration() const;

    void setHighlightMoveDuration(int);

    qreal highlightResizeSpeed() const;

    void setHighlightResizeSpeed(qreal);

    int highlightResizeDuration() const;

    void setHighlightResizeDuration(int);

    enum SnapMode { NoSnap, SnapToItem, SnapOneItem };

    SnapMode snapMode() const;

    void setSnapMode(SnapMode mode);

    QDeclarativeComponent *footer() const;

    void setFooter(QDeclarativeComponent *);

    QDeclarativeComponent *header() const;

    void setHeader(QDeclarativeComponent *);

    virtual void setContentX(qreal pos);

    virtual void setContentY(qreal pos);

    static QDeclarativeListViewAttached *qmlAttachedProperties(QObject *);

    enum PositionMode { Beginning, Center, End, Visible, Contain };

    Q_INVOKABLE void positionViewAtIndex(int index, int mode);

    Q_INVOKABLE int indexAt(int x, int y) const;

public Q_SLOTS:

    void incrementCurrentIndex();

    void decrementCurrentIndex();

Q_SIGNALS:

    void countChanged();

    void spacingChanged();

    void orientationChanged();

    void currentIndexChanged();

    void currentSectionChanged();

    void highlightMoveSpeedChanged();

    void highlightMoveDurationChanged();

    void highlightResizeSpeedChanged();

    void highlightResizeDurationChanged();

    void highlightChanged();

    void highlightItemChanged();

    void modelChanged();

    void delegateChanged();

    void highlightFollowsCurrentItemChanged();

    void preferredHighlightBeginChanged();

    void preferredHighlightEndChanged();

    void highlightRangeModeChanged();

    void keyNavigationWrapsChanged();

    void cacheBufferChanged();

    void snapModeChanged();

    void headerChanged();

    void footerChanged();

protected:

    virtual bool event(QEvent *event);

    virtual void viewportMoved();

    virtual qreal minYExtent() const;

    virtual qreal maxYExtent() const;

    virtual qreal minXExtent() const;

    virtual qreal maxXExtent() const;

    virtual void keyPressEvent(QKeyEvent *);

    virtual void componentComplete();

private Q_SLOTS:

    void refill();

    void trackedPositionChanged();

    void itemsInserted(int index, int count);

    void itemsRemoved(int index, int count);

    void itemsMoved(int from, int to, int count);

    void modelReset();

    void destroyRemoved();

    void createdItem(int index, QDeclarativeItem *item);

    void destroyingItem(QDeclarativeItem *item);

    void animStopped();

};

class QDeclarativeListViewAttached : public QObject

{

    Q_OBJECT

public:

    QDeclarativeListViewAttached(QObject *parent)

        : QObject(parent), m_view(0), m_isCurrent(false), m_delayRemove(false) {}

    ~QDeclarativeListViewAttached() {}

    Q_PROPERTY(QDeclarativeListView *view READ view CONSTANT)

    QDeclarativeListView *view() { return m_view; }

    Q_PROPERTY(bool isCurrentItem READ isCurrentItem NOTIFY currentItemChanged)

    bool isCurrentItem() const { return m_isCurrent; }

    void setIsCurrentItem(bool c) {

        if (m_isCurrent != c) {

            m_isCurrent = c;

            emit currentItemChanged();

        }

    }

    Q_PROPERTY(QString previousSection READ prevSection NOTIFY prevSectionChanged)

    QString prevSection() const { return m_prevSection; }

    void setPrevSection(const QString &sect) {

        if (m_prevSection != sect) {

            m_prevSection = sect;

            emit prevSectionChanged();

        }

    }

    Q_PROPERTY(QString nextSection READ nextSection NOTIFY nextSectionChanged)

    QString nextSection() const { return m_nextSection; }

    void setNextSection(const QString &sect) {

        if (m_nextSection != sect) {

            m_nextSection = sect;

            emit nextSectionChanged();

        }

    }

    Q_PROPERTY(QString section READ section NOTIFY sectionChanged)

    QString section() const { return m_section; }

    void setSection(const QString &sect) {

        if (m_section != sect) {

            m_section = sect;

            emit sectionChanged();

        }

    }

    Q_PROPERTY(bool delayRemove READ delayRemove WRITE setDelayRemove NOTIFY delayRemoveChanged)

    bool delayRemove() const { return m_delayRemove; }

    void setDelayRemove(bool delay) {

        if (m_delayRemove != delay) {

            m_delayRemove = delay;

            emit delayRemoveChanged();

        }

    }

    void emitAdd() { emit add(); }

    void emitRemove() { emit remove(); }

Q_SIGNALS:

    void currentItemChanged();

    void sectionChanged();

    void prevSectionChanged();

    void nextSectionChanged();

    void delayRemoveChanged();

    void add();

    void remove();

public:

    QDeclarativeListView *m_view;

    mutable QString m_section;

    QString m_prevSection;

    QString m_nextSection;

    bool m_isCurrent : 1;

    bool m_delayRemove : 1;

};

QT_END_NAMESPACE

QML_DECLARE_TYPEINFO(QDeclarativeListView, QML_HAS_ATTACHED_PROPERTIES)

QML_DECLARE_TYPE(QDeclarativeListView)

QML_DECLARE_TYPE(QDeclarativeViewSection)

QT_END_HEADER

#endif