stddatafiltermenucreator.cpp

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Boost Software License - Version 1.0 - August 17th, 2003
 *
 * Permission is hereby granted, free of charge, to any person or organization
 * obtaining a copy of the software and accompanying documentation covered by
 * this license (the "Software") to use, reproduce, display, distribute,
 * execute, and transmit the Software, and to prepare derivative works of the
 * Software, and to permit third-parties to whom the Software is furnished to
 * do so, all subject to the following:
 *
 * The copyright notices in the Software and this entire statement, including
 * the above license grant, this restriction and the following disclaimer,
 * must be included in all copies of the Software, in whole or in part, and
 * all derivative works of the Software, unless such copies or derivative
 * works are solely in the form of machine-executable object code generated by
 * a source language processor.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#include "stddatafiltermenucreator.h"
#include <QVariant>
#include <QMenu>
#include <util/sll/slotclosure.h>
#include <interfaces/iinfo.h>
#include <interfaces/idatafilter.h>
#include <interfaces/core/ientitymanager.h>
#include "util.h"
 
namespace LC
{
namespace Util
{
    namespace
    {
        template<typename T>
        void AddDatafilterMenuItem (const IDataFilter::FilterVariant& var, QMenu *menu, T actor)
        {
                const auto act = menu->addAction (var.Icon_, var.Name_);
                new Util::SlotClosure<Util::DeleteLaterPolicy>
                {
                    [var, actor] () mutable { actor (var); },
                    act,
                    SIGNAL (triggered ()),
                    act
                };
        }
    }
 
    StdDataFilterMenuCreator::StdDataFilterMenuCreator (const QVariant& dataVar, IEntityManager *em, QMenu *menu)
    : QObject (menu)
    , EntityMgr_ (em)
    {
        auto entity = MakeEntity (dataVar,
                QString (),
                FromUserInitiated | OnlyHandle,
                "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] (const IDataFilter::FilterVariant& var) mutable
                    {
                        entity.Additional_ ["DataFilter"] = var.ID_;
                        EntityMgr_->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_;
    }
}
}