/****************************************************************************
**
** Copyright (C) 1992-2004 Trolltech AS. All rights reserved.
**
** This file is part of the compatibility classes of the Qt Toolkit.
**
** Licensees holding valid Qt Preview licenses may use this file in
** accordance with the Qt Preview License Agreement provided with the
** Software.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef QDATABROWSER_H
#define QDATABROWSER_H

#include "qwidget.h"
#include "qstring.h"
#include "qstringlist.h"
#include "qsql.h"
#include "qsqlindex.h"
#include "qsqlcursor.h"
#include "qsqlerror.h"

#ifndef QT_NO_SQL_VIEW_WIDGETS

class QSqlForm;
class QDataBrowserPrivate;

class Q_COMPAT_EXPORT QDataBrowser : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(bool boundaryChecking READ boundaryChecking WRITE setBoundaryChecking)
    Q_PROPERTY(QString filter READ filter WRITE setFilter)
    Q_PROPERTY(QStringList sort READ sort WRITE setSort)
    Q_PROPERTY(bool confirmEdits READ confirmEdits WRITE setConfirmEdits)
    Q_PROPERTY(bool confirmInsert READ confirmInsert WRITE setConfirmInsert)
    Q_PROPERTY(bool confirmUpdate READ confirmUpdate WRITE setConfirmUpdate)
    Q_PROPERTY(bool confirmDelete READ confirmDelete WRITE setConfirmDelete)
    Q_PROPERTY(bool confirmCancels READ confirmCancels WRITE setConfirmCancels)
    Q_PROPERTY(bool readOnly READ isReadOnly WRITE setReadOnly)
    Q_PROPERTY(bool autoEdit READ autoEdit WRITE setAutoEdit)

public:
    QDataBrowser(QWidget* parent=0, const char* name=0, Qt::WFlags fl = 0);
    ~QDataBrowser();

    enum Boundary {
        Unknown,
        None,
        BeforeBeginning,
        Beginning,
        End,
        AfterEnd
    };

    Boundary boundary();
    void setBoundaryChecking(bool active);
    bool boundaryChecking() const;

    void setSort(const QSqlIndex& sort);
    void setSort(const QStringList& sort);
    QStringList  sort() const;
    void setFilter(const QString& filter);
    QString filter() const;
    virtual void setSqlCursor(QSqlCursor* cursor, bool autoDelete = false);
    QSqlCursor* sqlCursor() const;
    virtual void setForm(QSqlForm* form);
    QSqlForm* form();

    virtual void setConfirmEdits(bool confirm);
    virtual void setConfirmInsert(bool confirm);
    virtual void setConfirmUpdate(bool confirm);
    virtual void setConfirmDelete(bool confirm);
    virtual void setConfirmCancels(bool confirm);
    bool confirmEdits() const;
    bool confirmInsert() const;
    bool confirmUpdate() const;
    bool confirmDelete() const;
    bool confirmCancels() const;

    virtual void setReadOnly(bool active);
    bool isReadOnly() const;
    virtual void setAutoEdit(bool autoEdit);
    bool autoEdit() const;

    virtual bool seek(int i, bool relative = false);

signals:
    void firstRecordAvailable(bool available);
    void lastRecordAvailable(bool available);
    void nextRecordAvailable(bool available);
    void prevRecordAvailable(bool available);

    void currentChanged(const QSqlRecord* record);
    void primeInsert(QSqlRecord* buf);
    void primeUpdate(QSqlRecord* buf);
    void primeDelete(QSqlRecord* buf);
    void beforeInsert(QSqlRecord* buf);
    void beforeUpdate(QSqlRecord* buf);
    void beforeDelete(QSqlRecord* buf);
    void cursorChanged(QSqlCursor::Mode mode);

public slots:
    virtual void refresh();

    virtual void insert();
    virtual void update();
    virtual void del();

    virtual void first();
    virtual void last();
    virtual void next();
    virtual void prev();

    virtual void readFields();
    virtual void writeFields();
    virtual void clearValues();

    void updateBoundary();

protected:
    virtual bool insertCurrent();
    virtual bool updateCurrent();
    virtual bool deleteCurrent();
    virtual bool currentEdited();

    virtual QSql::Confirm confirmEdit(QSql::Op m);
    virtual QSql::Confirm confirmCancel(QSql::Op m);

    virtual void handleError(const QSqlError& error);

private:
    typedef bool (QSqlCursor::*Nav)();
    bool preNav();
    void postNav(bool primeUpd);
    void nav(Nav nav);
    QDataBrowserPrivate* d;

    Q_DISABLE_COPY(QDataBrowser)
};

#endif

#endif
