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Diffstat (limited to 'offapi/com/sun/star/util/XCloseListener.idl')
-rw-r--r-- | offapi/com/sun/star/util/XCloseListener.idl | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/offapi/com/sun/star/util/XCloseListener.idl b/offapi/com/sun/star/util/XCloseListener.idl new file mode 100644 index 0000000000..22702b9f79 --- /dev/null +++ b/offapi/com/sun/star/util/XCloseListener.idl @@ -0,0 +1,112 @@ +/* -*- 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 . + */ + + + module com { module sun { module star { module util { + +/** makes it possible to receive events when an object + is called for closing + + <p> + Such close events are broadcasted by a XCloseBroadcaster + if somewhere tries to close it by calling XCloseable::close(). + Listener can: + <ul> + <li>break that by throwing CloseVetoException</li> + <li>or accept that by deregister himself at this broadcaster.</li> + </ul> + </p> + + <p> + If an event com::sun::star::lang::XEventListener::disposing() + occurred, nobody called XCloseable::close() on listened object before. + Then it's not allowed to break this request - it must be accepted! + </p> + + @see XCloseable + @see XCloseBroadcaster + */ +published interface XCloseListener: com::sun::star::lang::XEventListener +{ + /** is called when somewhere tries to close listened object + + <p> + Is called before XCloseListener::notifyClosing(). + Listener has the chance to break that by throwing a CloseVetoException. + This exception must be passed to the original caller of XCloseable::close() + without any interaction. + </p> + + <p> + The parameter <var>GetsOwnership</var> regulate who has to try to close the listened object + again, if this listener disagree with the request by throwing the exception. + If it's set to `FALSE` the original caller of XCloseable::close() + will be the owner in every case. It's not allowed to call close() from this listener then. + If it's set to `TRUE` this listener will be the new owner if he throw the exception, + otherwise not! If his still running processes will be finished he must call close() on + listened object again then. + </p> + + <p> + If this listener doesn't disagree with th close request it depends from his internal + implementation if he deregister himself at the listened object. + But normally this must be done in XCloseListener::notifyClosing(). + </p> + + @param Source + describes the source of the event (must be the listened object) + + @param GetsOwnership + `TRUE` pass the ownership to this listener, if he throw the veto exception + (otherwise this parameter must be ignored!) + <br> + `FALSE` forbids to grab the ownership for the listened close object and call + close() on that any time. + + @throws CloseVetoException + if listener disagree with the close request on listened object he must throw this exception + */ + void queryClosing( + [in] com::sun::star::lang::EventObject Source, + [in] boolean GetsOwnership ) + raises( CloseVetoException ); + + /** is called when the listened object is closed really + + <p> + Now the listened object is closed really. Listener has to accept that; + should deregister himself and release all references to it. + It's not allowed nor possible to disagree with that by throwing any exception. + </p> + + <p> + If the event com::sun::star::lang::XEventListener::disposing() occurred before + it must be accepted too. There exist no chance for a disagreement any more. + </p> + + @param Source + describes the source of the event (must be the listened object) + */ + void notifyClosing( [in] com::sun::star::lang::EventObject Source ); +}; + + +}; }; }; }; + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |