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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Assistant 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QHELPINDEXWIDGET_H
#define QHELPINDEXWIDGET_H

#include <QtHelp/qhelp_global.h>

#include <QtCore/QUrl>
#include <QtGui/QStringListModel>
#include <QtGui/QListView>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Help)

class QHelpEnginePrivate;
class QHelpIndexModelPrivate;

class QHELP_EXPORT QHelpIndexModel : public QStringListModel
{
    Q_OBJECT

public:
    void createIndex(const QString &customFilterName);
    QModelIndex filter(const QString &filter,
        const QString &wildcard = QString());

    QMap<QString, QUrl> linksForKeyword(const QString &keyword) const;
    bool isCreatingIndex() const;

Q_SIGNALS:
    void indexCreationStarted();
    void indexCreated();

private Q_SLOTS:
    void insertIndices();
    void invalidateIndex(bool onShutDown = false);

private:
    QHelpIndexModel(QHelpEnginePrivate *helpEngine);
    ~QHelpIndexModel();

    QHelpIndexModelPrivate *d;
    friend class QHelpEnginePrivate;
};

class QHELP_EXPORT QHelpIndexWidget : public QListView
{
    Q_OBJECT

Q_SIGNALS:
    void linkActivated(const QUrl &link, const QString &keyword);
    void linksActivated(const QMap<QString, QUrl> &links,
        const QString &keyword);

public Q_SLOTS:
    void filterIndices(const QString &filter,
        const QString &wildcard = QString());
    void activateCurrentItem();

private Q_SLOTS:
    void showLink(const QModelIndex &index);

private:
    QHelpIndexWidget();
    friend class QHelpEngine;
};

QT_END_NAMESPACE

QT_END_HEADER

#endif