itagsmanager.h

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Distributed under the Boost Software License, Version 1.0.
 * (See accompanying file LICENSE or copy at https://www.boost.org/LICENSE_1_0.txt)
 **********************************************************************/
 
#ifndef INTERFACES_CORE_ITAGSMANAGER_H
#define INTERFACES_CORE_ITAGSMANAGER_H
#include <optional>
#include <QDataStream>
#include <QHash>
#include <QMetaType>
#include <QObject>
#include <QStringList>
#include <util/tags/emitters/tagsmanager.h>
 
class QAbstractItemModel;
 
namespace LC
{
    struct TagId
    {
        QString Id_;
 
        bool operator== (const TagId&) const = default;

        static QList<TagId> FromStrings (const QStringList& ids)
        {
            QList<TagId> result;
            result.reserve (ids.size ());
            for (const auto& id : ids)
                result << TagId { id };
            return result;
        }

        static QStringList ToStrings (const QList<TagId>& ids)
        {
            QStringList result;
            result.reserve (ids.size ());
            for (const auto& id : ids)
                result << id.Id_;
            return result;
        }
    };
 
    inline size_t qHash (const TagId& id, size_t seed = 0) noexcept
    {
        return qHash (id.Id_, seed);
    }
 
    inline QDataStream& operator<< (QDataStream& out, const TagId& id)
    {
        return out << id.Id_;
    }
 
    inline QDataStream& operator>> (QDataStream& in, TagId& id)
    {
        return in >> id.Id_;
    }
}
 
Q_DECLARE_METATYPE (LC::TagId)
 

class Q_DECL_EXPORT ITagsManager
{
protected:
    LC::Util::Emitters::TagsManager Emitter_;
public:
    virtual ~ITagsManager () {}

    const LC::Util::Emitters::TagsManager& GetEmitter () const { return Emitter_; }

    virtual std::optional<LC::TagId> GetID (const QString& tag) = 0;

    QList<LC::TagId> GetIDs (const QStringList& tags)
    {
        QList<LC::TagId> result;
        for (const auto& tag : tags)
            if (const auto& id = GetID (tag))
                result << *id;
        return result;
    }

    virtual QStringList GetTags (const LC::TagId& id) const = 0;

    QStringList GetTags (const QList<LC::TagId>& ids) const
    {
        QStringList result;
        result.reserve (ids.size ());
        for (const auto& id : ids)
            result += GetTags (id);
        result.removeDuplicates ();
        return result;
    }

    virtual QStringList GetAllTags () const = 0;

    virtual QStringList Split (const QString& string) const = 0;

    virtual QList<LC::TagId> SplitToIDs (const QString& string) = 0;

    virtual QString Join (const QStringList& tags) const = 0;

    virtual QString JoinIDs (const QList<LC::TagId>& tagIDs) const = 0;

    virtual QAbstractItemModel* GetModel () = 0;
};
 
Q_DECLARE_INTERFACE (ITagsManager, "org.Deviant.LeechCraft.ITagsManager/1.0")
 
#endif