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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef __com_sun_star_configuration_backend_UpdatableLayer_idl__
#define __com_sun_star_configuration_backend_UpdatableLayer_idl__
#include <com/sun/star/configuration/backend/Layer.idl>
#include <com/sun/star/configuration/backend/XUpdatableLayer.idl>
module com { module sun { module star { module configuration { module backend {
/**
provides read/write access to a configuration data layer.
<p>A layer contains the configuration setting changes to be performed
on a default layer (or schema) to obtain the values of those settings
for a given entity and component.
</p>
<p>An updatable layer can be read or replaced with another layer.
</p>
@since OOo 1.1.2
*/
published service UpdatableLayer
{
/**
handles read access to the contents of the layer.
<p> If the implementation supports
<type scope="com::sun::star::util">XTimeStamped</type>,
then after executing <member>XUpdatableLayer::replaceWith()</member>
the timestamp will be the one for the replaced contents and
if reading after updates is supported the next read will reproduce the
replaced data.
</p>
*/
service Layer ;
/**
provides write access to the contents of the layer.
<p> Depending of the actual type (simple, i.e pure <type>XLayer</type> or
composite, i.e <type>XCompositeLayer</type>) of the current layer and
the provided replacement layer, the operation performed
by <member>XUpdatableLayer::replaceWith()</member>, will vary.
</p>
<p> For the different current/replacement layer combinations, we have:
<dl>
<dt>Simple/Simple<dt>
<dd>the provided layer's contents replace the current one's.</dd>
<dt>Composite/Composite<dt>
<dd>all layers (main and sub) present in the
provided layer are used to replace the corresponding current
layer contents. Sublayers present in the current layer but
not in the provided one are left untouched. Sublayers present
in the provided layer but not in the current one are added to
the current layer.
</dd>
<dt>Simple/Composite<dt>
<dd>the main layer and sublayers of the provided layer
are merged into one whose contents replace the current layer.
</dd>
<dt>Composite/Simple<dt>
<dd>the provided layer is split into a composite one whose contents
are then used to replace the current layer as described above.
</dd>
</dl>
<em> Not all implementations of <type>XUpdatableLayer</type>
support conversions of the replacement layer.
In such a case the sublayers of the provided layer may be ignored
or all simple data be merged into the main layer.
</em>
</p>
*/
interface XUpdatableLayer ;
} ;
} ; } ; } ; } ; } ;
#endif
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