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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_util_XAtomServer_idl__
#define __com_sun_star_util_XAtomServer_idl__
#include <com/sun/star/uno/XInterface.idl>
#include <com/sun/star/util/AtomDescription.idl>
#include <com/sun/star/util/AtomClassRequest.idl>
module com
{
module sun
{
module star
{
module util
{
/** an interface to map between <i>string</i>s and <i>id</i>s
<p>a note on atoms:<br>
Atoms are abbreviations for strings.
When a string gets registered, it is assigned a numeric id
so that said string can always be referred to by this id.
This way strings have to be transported only once over remote connections.
Valid ids are (in this implementation) non zero, signed 32 bit values.
An atom of 0 means that the string in question is not registered</p>
<p>Additionally there is the abstraction of atom class:<br>
Atoms are grouped into classes, so that an id can be assigned
to multiple strings, depending on the class context. The main
advantage of this is that atoms in one class may be kept
to small numbers, so that bandwidth can be reduced by sending
the atoms only as 16 bit values. Note that it is up to the user in this
case to handle overflows.</p>
*/
published interface XAtomServer : com::sun::star::uno::XInterface
{
/** returns a whole atom class
@param atomClass
which class to return
@returns
the descriptions for all atoms of class <code>atomClass</code>
*/
sequence< AtomDescription > getClass( [in] long atomClass );
/** returns multiple atom classes
@param atomClasses
which classes to return
@returns
the descriptions for all atoms of the requested classes
*/
sequence< sequence< AtomDescription > > getClasses( [in] sequence< long > atomClasses );
/** returns the strings for an arbitrary amount of atoms of multiple classes
@param atoms
describes which strings to return
@returns
the strings for the requested atoms
*/
sequence< string > getAtomDescriptions( [in] sequence< AtomClassRequest > atoms );
/** returns the atoms that have been registered to a class after an
already known atom
<p>Hint to implementor: using ascending atoms is the easiest way
to decide, which atoms are recent.</p>
@param atomClass
the class in question
@param atom
the last known atom
@returns
all atom description that have been added to class
<code>atomClass</code> after <code>atom</code>
*/
sequence< AtomDescription > getRecentAtoms( [in] long atomClass, [in] long atom );
/** registers or searches for a string
@param atomClass
the class of atoms in question
@param description
the string in question
@param create
if true a new atom will be created for an unknown string
else the invalid atom (0) will be returned for an unknown string
@returns
the atom for the string <code>description</code>
*/
long getAtom( [in] long atomClass, [in] string description, [in] boolean create );
};
}; // module util
}; // module star
}; // module sun
}; // module com
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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