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84 lines
2.9 KiB
84 lines
2.9 KiB
11 years ago
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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#ifndef JUCE_ACTIONBROADCASTER_H_INCLUDED
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#define JUCE_ACTIONBROADCASTER_H_INCLUDED
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//==============================================================================
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/** Manages a list of ActionListeners, and can send them messages.
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To quickly add methods to your class that can add/remove action
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listeners and broadcast to them, you can derive from this.
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@see ActionListener, ChangeListener
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*/
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class JUCE_API ActionBroadcaster
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{
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public:
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//==============================================================================
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/** Creates an ActionBroadcaster. */
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ActionBroadcaster();
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/** Destructor. */
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virtual ~ActionBroadcaster();
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//==============================================================================
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/** Adds a listener to the list.
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Trying to add a listener that's already on the list will have no effect.
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*/
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void addActionListener (ActionListener* listener);
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/** Removes a listener from the list.
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If the listener isn't on the list, this won't have any effect.
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*/
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void removeActionListener (ActionListener* listener);
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/** Removes all listeners from the list. */
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void removeAllActionListeners();
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//==============================================================================
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/** Broadcasts a message to all the registered listeners.
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@see ActionListener::actionListenerCallback
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*/
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void sendActionMessage (const String& message) const;
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private:
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//==============================================================================
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friend class WeakReference<ActionBroadcaster>;
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WeakReference<ActionBroadcaster>::Master masterReference;
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class ActionMessage;
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friend class ActionMessage;
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SortedSet <ActionListener*> actionListeners;
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CriticalSection actionListenerLock;
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JUCE_DECLARE_NON_COPYABLE (ActionBroadcaster)
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};
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#endif // JUCE_ACTIONBROADCASTER_H_INCLUDED
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