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Diffstat (limited to 'sd/source/ui/framework/configuration/ConfigurationControllerBroadcaster.hxx')
| -rw-r--r-- | sd/source/ui/framework/configuration/ConfigurationControllerBroadcaster.hxx | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/sd/source/ui/framework/configuration/ConfigurationControllerBroadcaster.hxx b/sd/source/ui/framework/configuration/ConfigurationControllerBroadcaster.hxx new file mode 100644 index 000000000..5dfd6843d --- /dev/null +++ b/sd/source/ui/framework/configuration/ConfigurationControllerBroadcaster.hxx @@ -0,0 +1,138 @@ +/* -*- 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 . + */ + +#pragma once + +#include <com/sun/star/uno/Reference.hxx> + +#include <unordered_map> +#include <vector> + +namespace com::sun::star::drawing::framework { class XConfigurationChangeListener; } +namespace com::sun::star::drawing::framework { class XConfigurationController; } +namespace com::sun::star::drawing::framework { class XResource; } +namespace com::sun::star::drawing::framework { class XResourceId; } +namespace com::sun::star::drawing::framework { struct ConfigurationChangeEvent; } + +namespace sd::framework { + +/** This class manages the set of XConfigurationChangeListeners and + calls them when the ConfigurationController wants to broadcast an + event. + + For every registered combination of listener and event type a user data + object is stored. This user data object is then given to the listener + whenever it is called for an event. With this the listener can use + a switch statement to handle different event types. +*/ +class ConfigurationControllerBroadcaster +{ +public: + /** The given controller is used as origin of thrown exceptions. + */ + explicit ConfigurationControllerBroadcaster ( + const css::uno::Reference< + css::drawing::framework::XConfigurationController>& rxController); + + /** Add a listener for one type of event. When one listener is + interested in more than one event type this method has to be called + once for every event type. Alternatively it can register as + universal listener that will be called for all event types. + @param rxListener + A valid reference to a listener. + @param rsEventType + The type of event that the listener will be called for. The + empty string is a special value in that the listener will be + called for all event types. + @param rUserData + This object is passed to the listener whenever it is called for + the specified event type. For different event types different + user data objects can be provided. + @throws IllegalArgumentException + when an empty listener reference is given. + */ + void AddListener( + const css::uno::Reference< + css::drawing::framework::XConfigurationChangeListener>& rxListener, + const OUString& rsEventType, + const css::uno::Any& rUserData); + + /** Remove all references to the given listener. When one listener has + been registered for more than one type of event then it is removed + for all of them. + @param rxListener + A valid reference to a listener. + @throws IllegalArgumentException + when an empty listener reference is given. + */ + void RemoveListener( + const css::uno::Reference< + css::drawing::framework::XConfigurationChangeListener>& rxListener); + + /** Broadcast the given event to all listeners that have been registered + for its type of event as well as all universal listeners. + + When calling a listener results in a DisposedException being thrown + the listener is unregistered automatically. + */ + void NotifyListeners ( + const css::drawing::framework::ConfigurationChangeEvent& rEvent); + + /** This convenience variant of NotifyListeners create the event from + the given arguments. + */ + void NotifyListeners ( + const OUString& rsEventType, + const css::uno::Reference<css::drawing::framework::XResourceId>& rxResourceId, + const css::uno::Reference<css::drawing::framework::XResource>& rxResourceObject); + + /** Call all listeners and inform them that the + ConfigurationController is being disposed. When this method returns + the list of registered listeners is empty. Further calls to + RemoveListener() are not necessary but do not result in an error. + */ + void DisposeAndClear(); + +private: + css::uno::Reference<css::drawing::framework::XConfigurationController> mxConfigurationController; + class ListenerDescriptor + { + public: + css::uno::Reference<css::drawing::framework::XConfigurationChangeListener> mxListener; + css::uno::Any maUserData; + }; + typedef std::vector<ListenerDescriptor> ListenerList; + typedef std::unordered_map + <OUString, + ListenerList> ListenerMap; + ListenerMap maListenerMap; + + /** Broadcast the given event to all listeners in the given list. + + When calling a listener results in a DisposedException being thrown + the listener is unregistered automatically. + */ + void NotifyListeners ( + const ListenerList& rList, + const css::drawing::framework::ConfigurationChangeEvent& rEvent); +}; + +} // end of namespace sd::framework + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |