/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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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 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
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#pragma once

#include <coreplugin/locator/ilocatorfilter.h>

#include <QIcon>
#include <QMutex>

namespace Help {
namespace Internal {

class HelpIndexFilter : public Core::ILocatorFilter
{
    Q_OBJECT

public:
    HelpIndexFilter();
    ~HelpIndexFilter();

    // ILocatorFilter
    void prepareSearch(const QString &entry);
    QList<Core::LocatorFilterEntry> matchesFor(QFutureInterface<Core::LocatorFilterEntry> &future,
                                               const QString &entry);
    void accept(Core::LocatorFilterEntry selection) const;
    void refresh(QFutureInterface<void> &future);

    Q_INVOKABLE QSet<QString> searchMatches(const QString &databaseFilePath,
                                          const QString &term, int limit);
signals:
    void linkActivated(const QUrl &link) const;
    void linksActivated(const QMap<QString, QUrl> &links, const QString &key) const;

private:
    void invalidateCache();

    QStringList m_helpDatabases;
    QSet<QString> m_keywordCache;
    QString m_searchTermCache;
    bool m_needsUpdate;
    QMutex m_mutex;
    QIcon m_icon;
};

} // namespace Internal
} // namespace Help
