stddatafiltermenucreator.cpp

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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)
 **********************************************************************/
 
#include "stddatafiltermenucreator.h"
#include <QVariant>
#include <QMenu>
#include <interfaces/iinfo.h>
#include <interfaces/idatafilter.h>
#include <interfaces/core/ientitymanager.h>
#include "util.h"
 
namespace LC::Util
{
    namespace
    {
        template<typename T>
        void AddDatafilterMenuItem (const IDataFilter::FilterVariant& var, QMenu *menu, T actor)
        {
                const auto act = menu->addAction (var.Icon_, var.Name_);
                QObject::connect (act,
                        &QAction::triggered,
                        [var, actor] () mutable { actor (var); });
        }
    }
 
    StdDataFilterMenuCreator::StdDataFilterMenuCreator (const QVariant& dataVar, IEntityManager *em, QMenu *menu)
    : QObject (menu)
    {
        auto entity = MakeEntity (dataVar,
                QString (),
                FromUserInitiated | OnlyHandle,
                QStringLiteral ("x-leechcraft/data-filter-request"));
        for (auto plugin : em->GetPossibleHandlers (entity))
        {
            auto ii = qobject_cast<IInfo*> (plugin);
            auto idf = qobject_cast<IDataFilter*> (plugin);
            if (!idf)
                continue;
 
            const auto& vars = idf->GetFilterVariants (dataVar);
 
            if (vars.isEmpty ())
                continue;
 
            const auto actor = [this, entity, plugin, em] (const IDataFilter::FilterVariant& var) mutable
                    {
                        entity.Additional_ [QStringLiteral ("DataFilter")] = var.ID_;
                        em->HandleEntity (entity, plugin);
 
                        ChosenPlugin_ = qobject_cast<IInfo*> (plugin)->GetUniqueID ();
                        ChosenVariant_ = var.ID_;
                    };
 
            if (vars.size () == 1)
                AddDatafilterMenuItem (vars.value (0), menu, actor);
            else
            {
                auto searchMenu = menu->addMenu (ii->GetIcon (), idf->GetFilterVerb ());
                for (const auto& var : vars)
                    AddDatafilterMenuItem (var, searchMenu, actor);
            }
        }
    }
 
    const QByteArray& StdDataFilterMenuCreator::GetChosenPlugin () const
    {
        return ChosenPlugin_;
    }
 
    const QByteArray& StdDataFilterMenuCreator::GetChosenVariant () const
    {
        return ChosenVariant_;
    }
}