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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef INCLUDED_SD_SOURCE_UI_FRAMEWORK_CONFIGURATION_CONFIGURATIONCONTROLLERBROADCASTER_HXX
21 : #define INCLUDED_SD_SOURCE_UI_FRAMEWORK_CONFIGURATION_CONFIGURATIONCONTROLLERBROADCASTER_HXX
22 :
23 : #include <com/sun/star/drawing/framework/XConfigurationChangeListener.hpp>
24 : #include <com/sun/star/drawing/framework/XConfigurationController.hpp>
25 : #include <com/sun/star/drawing/framework/ConfigurationChangeEvent.hpp>
26 :
27 : #include <unordered_map>
28 : #include <vector>
29 :
30 : namespace sd { namespace framework {
31 :
32 : /** This class manages the set of XConfigurationChangeListeners and
33 : calls them when the ConfigurationController wants to broadcast an
34 : event.
35 :
36 : For every registered combination of listener and event type a user data
37 : object is stored. This user data object is then given to the listener
38 : whenever it is called for an event. With this the listener can use
39 : a switch statement to handle different event types.
40 : */
41 127 : class ConfigurationControllerBroadcaster
42 : {
43 : public:
44 : /** The given controller is used as origin of thrown exceptions.
45 : */
46 : ConfigurationControllerBroadcaster (
47 : const css::uno::Reference<
48 : css::drawing::framework::XConfigurationController>& rxController);
49 :
50 : /** Add a listener for one type of event. When one listener is
51 : interested in more than one event type this method has to be called
52 : once for every event type. Alternatively it can register as
53 : universal listener that will be called for all event types.
54 : @param rxListener
55 : A valid reference to a listener.
56 : @param rsEventType
57 : The type of event that the listener will be called for. The
58 : empty string is a special value in that the listener will be
59 : called for all event types.
60 : @param rUserData
61 : This object is passed to the listener whenever it is called for
62 : the specified event type. For different event types different
63 : user data objects can be provided.
64 : @throws IllegalArgumentException
65 : when an empty listener reference is given.
66 : */
67 : void AddListener(
68 : const css::uno::Reference<
69 : css::drawing::framework::XConfigurationChangeListener>& rxListener,
70 : const OUString& rsEventType,
71 : const css::uno::Any& rUserData);
72 :
73 : /** Remove all references to the given listener. When one listener has
74 : been registered for more than one type of event then it is removed
75 : for all of them.
76 : @param rxListener
77 : A valid reference to a listener.
78 : @throws IllegalArgumentException
79 : when an empty listener reference is given.
80 : */
81 : void RemoveListener(
82 : const css::uno::Reference<
83 : css::drawing::framework::XConfigurationChangeListener>& rxListener);
84 :
85 : /** Broadcast the given event to all listeners that have been registered
86 : for its type of event as well as all universal listeners.
87 :
88 : When calling a listener results in a DisposedException being thrown
89 : the listener is unregistered automatically.
90 : */
91 : void NotifyListeners (
92 : const css::drawing::framework::ConfigurationChangeEvent& rEvent);
93 :
94 : /** This convenience variant of NotifyListeners create the event from
95 : the given arguments.
96 : */
97 : void NotifyListeners (
98 : const OUString& rsEventType,
99 : const css::uno::Reference<css::drawing::framework::XResourceId>& rxResourceId,
100 : const css::uno::Reference<css::drawing::framework::XResource>& rxResourceObject);
101 :
102 : /** Call all listeners and inform them that the
103 : ConfigurationController is being disposed. When this method returns
104 : the list of registered listeners is empty. Further calls to
105 : RemoveListener() are not necessary but do not result in an error.
106 : */
107 : void DisposeAndClear();
108 :
109 : private:
110 : css::uno::Reference<
111 : com::sun::star::drawing::framework::XConfigurationController> mxConfigurationController;
112 29399 : class ListenerDescriptor {public:
113 : css::uno::Reference<
114 : css::drawing::framework::XConfigurationChangeListener> mxListener;
115 : css::uno::Any maUserData;
116 : };
117 : typedef std::vector<ListenerDescriptor> ListenerList;
118 : typedef std::unordered_map
119 : <OUString,
120 : ListenerList,
121 : OUStringHash> ListenerMap;
122 : ListenerMap maListenerMap;
123 :
124 : /** Broadcast the given event to all listeners in the given list.
125 :
126 : When calling a listener results in a DisposedException being thrown
127 : the listener is unregistered automatically.
128 : */
129 : void NotifyListeners (
130 : const ListenerList& rList,
131 : const css::drawing::framework::ConfigurationChangeEvent& rEvent);
132 : };
133 :
134 : } } // end of namespace sd::framework
135 :
136 : #endif
137 :
138 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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