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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_lang_XConnectionPoint_idl__
+#define __com_sun_star_lang_XConnectionPoint_idl__
+
+#include <com/sun/star/uno/XInterface.idl>
+#include <com/sun/star/lang/XConnectionPointContainer.idl>
+
+#include <com/sun/star/lang/ListenerExistException.idl>
+
+#include <com/sun/star/lang/InvalidListenerException.idl>
+
+
+
+module com {  module sun {  module star {  module lang {
+
+/** supports connection points for connectable objects.
+
+    <p>Connectable objects support the following features: </p>
+
+    <ul>
+        <li>outgoing interfaces, such as event sets; </li>
+        <li>the ability to enumerate the types of the outgoing interfaces;
+        <li>the ability to connect and disconnect sinks to the object
+            for those outgoing types; </li>
+        <li>the ability to enumerate the connections that exist to a
+            particular outgoing interface.  </li>
+    </ul>
+
+    <h4>When to Implement?</h4>
+
+    <p>To create a connectable object, you need to implement objects
+    that provide two related interfaces: </p>
+
+    <ul>
+        <li>XConnectionPointContainer </li>
+        <li>XConnectionPoint </li>
+    </ul>
+
+    <p>The XConnectionPointContainer interface is implemented
+    on the connectable object to indicate the existence of the outgoing
+    interfaces. It provides a sequence of sub-objects.  It also provides
+    access to all the connection point sub-objects, each of which
+    implements the XConnectionPoint interface. The
+    XConnectionPoint interface provides a sequence of
+    sub-objects.  </p>
+
+    <p>Each connection point is a separate sub-object to avoid circular
+    reference counting problems.  A connection point controls how many
+    connections (one or more) it will allow in its implementation of
+    XConnectionPoint::advise().  </p>
+
+    <h4>When to use?</h4>
+
+    <p>A client can use the XConnectionPointContainer interface: </p>
+
+    -       to get a sequence of connection points for each outgoing type.
+
+    -       to obtain access to connection point sub-objects with the
+            XConnectionPoint interface for each
+            outgoing type. Through the XConnectionPoint interface,
+            a client starts or terminates an advisory loop with the
+            connectable object and the client's own sink.  The
+            client can also use the XConnectionPoint
+            interface to get a sequence of the connections that it
+            knows about.
+
+    @see        XConnectionPointContainer
+ */
+published interface XConnectionPoint: com::sun::star::uno::XInterface
+{
+    /** @returns
+                the type of the outgoing interface managed by this
+                connection point.
+
+        <p>Using the XConnectionPointContainer::getConnectionPoints()
+        method, a client can obtain an XConnectionPoint
+        interface.  Using that interface and this method, the client
+        can determine the type of each connection point enumerated. The
+        type returned from this method must enable the caller to access
+        this same connection point through
+        XConnectionPointContainer::findConnectionPoint().
+
+        @see XConnectionPointContainer::findConnectionPoint
+     */
+    type getConnectionType();
+
+    /** @returns
+            the XConnectionPointContainer interface on
+            the parent connectable object.
+
+        @see XConnectionPointContainer
+     */
+    com::sun::star::lang::XConnectionPointContainer getConnectionPointContainer();
+
+    /** creates a connection between a connection point and a
+        client's sink, where the sink implements the outgoing interface
+        supported by this connection point.
+
+        <p>A few <code>add...Listener</code> methods need additional parameters
+        to add listeners or throw exceptions. One of these methods is
+        com::sun::star::beans::XPropertySet::addPropertyChangeListener().
+        We ignore the problem in this interface. A solution must be provided
+        in an additional XConnectionPoint interface.  </p>
+
+        @param xListener
+            specifies the listener interface on the client's advise sink.
+            The client's sink receives outgoing calls from the
+            connection point container.
+
+        @throws ListenerExistException
+            if it is an unicast broadcaster and a listener is already set.
+
+        @throws InvalidListenerException
+            if the listener does not supply the needed interfaces.
+
+        @see com::sun::star::beans::XPropertySet::addPropertyChangeListener
+     */
+    void advise( [in] com::sun::star::uno::XInterface xListener )
+            raises( com::sun::star::lang::ListenerExistException,
+                    com::sun::star::lang::InvalidListenerException );
+
+    /** terminates a notification previously set up with advise.
+
+        <p>A few <code>remove...Listener</code> methods need additional
+        parameters to add listeners or throw exceptions. One of these methods
+        is com::sun::star::beans::XPropertySet::removePropertyChangeListener().
+        We ignore the problem in this interface. A solution must be
+        provided in an additional XConnectionPoint interface.  </p>
+
+        @param xListener
+            specifies the listener interface on the client's advise sink.
+
+        @see com::sun::star::beans::XPropertySet::removePropertyChangeListener
+     */
+    void unadvise( [in] com::sun::star::uno::XInterface xListener );
+
+    /** @returns
+                a sequence of all currently advised connections.
+     */
+    sequence<com::sun::star::uno::XInterface> getConnections();
+
+};
+
+
+}; }; }; };
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */