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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 INCLUDED_COMPHELPER_ACCESSIBLEEVENTNOTIFIER_HXX
#define INCLUDED_COMPHELPER_ACCESSIBLEEVENTNOTIFIER_HXX
#include <comphelper/comphelperdllapi.h>
namespace com::sun::star::uno { class XInterface; }
namespace com::sun::star::uno { template <class interface_type> class Reference; }
namespace com::sun::star::accessibility { class XAccessibleEventListener; }
namespace com::sun::star::accessibility { struct AccessibleEventObject; }
namespace comphelper {
class COMPHELPER_DLLPUBLIC AccessibleEventNotifier
{
public:
typedef sal_uInt32 TClientId;
public:
AccessibleEventNotifier() = delete;
~AccessibleEventNotifier() = delete;
AccessibleEventNotifier( const AccessibleEventNotifier& ) = delete;
AccessibleEventNotifier& operator=( const AccessibleEventNotifier& ) = delete;
/** registers a client of this class, means a broadcaster of AccessibleEvents
<p>No precaution is taken to care for disposal of this component. When the component
dies, it <b>must</b> call <member>revokeClient</member> or <member>revokeClientNotifyDisposing</member>
explicitly itself.</p>
*/
static TClientId registerClient();
/** revokes a broadcaster of AccessibleEvents
<p>Note that no disposing event is fired when you use this method, the client is simply revoked.
You can for instance revoke a client if the last listener for it is revoked, but the client
itself is not disposed.<br/>
When the client is disposed, you should prefer <member>revokeClientNotifyDisposing</member></p>
<p>Any possibly pending events for this client are removed from the queue.</p>
@seealso revokeClientNotifyDisposing
*/
static void revokeClient( const TClientId _nClient );
/** revokes a client, with additionally notifying a disposing event to all listeners registered for
this client
<p>Any other possibly pending events for this client are removed from the queue</p>
@param _nClient
the id of the client which should be revoked
@param _rxEventSource
the source to be notified together with the <member scope="com.sun.star.lang">XComponent::disposing</member>
call.
*/
static void revokeClientNotifyDisposing(
const TClientId _nClient,
const css::uno::Reference< css::uno::XInterface >& _rxEventSource );
/** registers a listener for the given client
@param _nClient
the id of the client for which a listener should be registered
@return
the number of event listeners currently registered for this client
*/
static sal_Int32 addEventListener(
const TClientId _nClient,
const css::uno::Reference< css::accessibility::XAccessibleEventListener >& _rxListener );
/** revokes a listener for the given client
@param _nClient
the id of the client for which a listener should be revoked
@return
the number of event listeners currently registered for this client
*/
static sal_Int32 removeEventListener(
const TClientId _nClient,
const css::uno::Reference< css::accessibility::XAccessibleEventListener >& _rxListener );
/** adds an event, which is to be broadcasted, to the queue
@param _nClient
the id of the client which needs to broadcast the event
*/
static void addEvent(
const TClientId _nClient,
const css::accessibility::AccessibleEventObject& _rEvent );
// to be called at application shutdown to clear the static map, so we don't get crashes on shutdown
static void shutdown();
};
} // namespace comphelper
#endif // INCLUDED_COMPHELPER_ACCESSIBLEEVENTNOTIFIER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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