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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** 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.
**
**************************************************************************/

#ifndef BASETEXTFIND_H
#define BASETEXTFIND_H

#include "find_global.h"
#include "ifindsupport.h"

#include <QtCore/QScopedPointer>

QT_BEGIN_NAMESPACE
class QPlainTextEdit;
class QTextEdit;
class QTextCursor;
QT_END_NAMESPACE

namespace Find {
struct BaseTextFindPrivate;

class FIND_EXPORT BaseTextFind : public Find::IFindSupport
{
    Q_OBJECT

public:
    explicit BaseTextFind(QPlainTextEdit *editor);
    explicit BaseTextFind(QTextEdit *editor);
    virtual ~BaseTextFind();

    bool supportsReplace() const;
    Find::FindFlags supportedFindFlags() const;
    void resetIncrementalSearch();
    void clearResults();
    QString currentFindString() const;
    QString completedFindString() const;

    Result findIncremental(const QString &txt, Find::FindFlags findFlags);
    Result findStep(const QString &txt, Find::FindFlags findFlags);
    void replace(const QString &before, const QString &after,
        Find::FindFlags findFlags);
    bool replaceStep(const QString &before, const QString &after,
        Find::FindFlags findFlags);
    int replaceAll(const QString &before, const QString &after,
        Find::FindFlags findFlags);

    void defineFindScope();
    void clearFindScope();

signals:
    void highlightAll(const QString &txt, Find::FindFlags findFlags);
    void findScopeChanged(const QTextCursor &start, const QTextCursor &end,
                          int verticalBlockSelectionFirstColumn,
                          int verticalBlockSelectionLastColumn);

private:
    bool find(const QString &txt,
              Find::FindFlags findFlags,
              QTextCursor start,
              bool *wrapped);
    QTextCursor replaceInternal(const QString &before, const QString &after,
                                Find::FindFlags findFlags);

    QTextCursor textCursor() const;
    void setTextCursor(const QTextCursor&);
    QTextDocument *document() const;
    bool isReadOnly() const;
    bool inScope(int startPosition, int endPosition) const;
    QTextCursor findOne(const QRegExp &expr, const QTextCursor &from, QTextDocument::FindFlags options) const;

    QScopedPointer<BaseTextFindPrivate> d;
};

} // namespace Find

#endif // BASETEXTFIND_H