ientitymanager.h

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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,
 * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
 * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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 **********************************************************************/
 
#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")