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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
commit940b4d1848e8c70ab7642901a68594e8016caffc (patch)
treeeb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /include/comphelper/accessibleeventnotifier.hxx
parentInitial commit. (diff)
downloadlibreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.tar.xz
libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.zip
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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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 );
+
+};
+
+} // namespace comphelper
+
+#endif // INCLUDED_COMPHELPER_ACCESSIBLEEVENTNOTIFIER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */