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#ifndef QHELPINDEXWIDGET_H
#define QHELPINDEXWIDGET_H

#include <QtHelp/qhelp_global.h>

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

QT_BEGIN_NAMESPACE


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

#endif