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** Copyright (C) 2013 Jolla Ltd.
** Contact: Marko Mattila <marko.mattila@jollamobile.com>
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/*!
\contentspage {Nemo Transfer Engine Contents}
\page index.html

\title Nemo Transfer Engine

The Nemo Transfer Engine is a daemon process which takes care of tracking sharing, sync and downloads.
In addition to just tracking those operations, it provides an API to create new share plugins and different
functionality related these operations.The Nemo Transfer Engine doesn't provide any UI components, but the
plugin interface expects sharing UIs to be written as QML.

The Nemo Transfer Engine can be understood as a front end to the database which contain all the information
about sharing, syncs and downloads. For syncs and downloads it acts only as storage manager so clients can
use Nemo Transfer Engine client API to create and update sync and download events. For sharing, Nemo Transfer
Engine provides own API and supports share plugins.

See TransferEngine DbManager


\section2 Nemo Transfer Engine API

The API can be divided in two different parts: the share plugin API and the client API.

\section3 Share Plugin API

Share plugin is a Qt plugin, which must be implemented using C++ interfaces defined by Nemo Transfer Engine.
The plugins must be installed to the specific location where Nemo Transfer Engine loads them. The actual
share functionality implementation depends on the client e.g. if it's HW specific like NFC or online service
such as Facebook. Each plugin must implement or use the following interface:

\list
    \o \l {TransferPluginInterface} Share plugin must implement this interface
    \o \l {MediaTransferInterface} Share plugin must implement this interface
    \o \l {TransferPluginInfo} Share plugin must provide information about plugin using this class
    \o \l {TransferMethodInfo} Share plugin must provide information about e.g. accounts using this class
\endlist

\section3 Client API

Client API can also be divided in two sections: full features DBus API and TransferEngineClient Interface.
The first one supports all the features Nemo Transfer Engine provides and makes possible to implement for
example Transfer UI and client side sharing interface on top of it. The TransferEngineClient is meant to
be used by clients who want to inform Nemo Transfer Engine of ongoing Sync or Downloads.

\list
    \o DBus API - see org.nemomobile.transferengine.xml. For the client side it will generate TransferEngineInterface
    class which can be used directly.
    \o TransferEngineClient - The convenience API to create Sync and Download events.
\endlist

\section3 Reference
\list
    \o \l {Nemo Transfer Engine Reference}
\endlist

*/