ientitymanager.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)
 **********************************************************************/
 
#pragma once
 
#include <QObject>
#include <QFuture>
#include <util/sll/either.h>
#include <interfaces/idownload.h>
 
namespace LC
{
    struct Entity;
}

class Q_DECL_EXPORT IEntityManager
{
public:
    struct DelegationResult
    {
        QObject *Handler_ = nullptr;

        QFuture<IDownload::Result> DownloadResult_;
 
        explicit operator bool () const
        {
            return Handler_;
        }
    };
 
    virtual ~IEntityManager () {}

    virtual DelegationResult DelegateEntity (LC::Entity entity, QObject *desired = nullptr) = 0;

    virtual bool HandleEntity (LC::Entity entity, QObject *desired = nullptr) = 0;

    virtual bool CouldHandle (const LC::Entity& entity) = 0;

    virtual QList<QObject*> GetPossibleHandlers (const LC::Entity& entity) = 0;
};
 
Q_DECLARE_INTERFACE (IEntityManager, "org.Deviant.LeechCraft.IEntityManager/1.0")