93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
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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) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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To use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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class ActionBroadcaster::ActionMessage : public MessageManager::MessageBase
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{
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public:
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ActionMessage (const ActionBroadcaster* ab,
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const String& messageText, ActionListener* l) noexcept
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: broadcaster (const_cast<ActionBroadcaster*> (ab)),
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message (messageText),
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listener (l)
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{}
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void messageCallback() override
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{
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if (auto b = broadcaster.get())
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if (b->actionListeners.contains (listener))
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listener->actionListenerCallback (message);
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}
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private:
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WeakReference<ActionBroadcaster> broadcaster;
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const String message;
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ActionListener* const listener;
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JUCE_DECLARE_NON_COPYABLE (ActionMessage)
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};
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//==============================================================================
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ActionBroadcaster::ActionBroadcaster()
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{
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// are you trying to create this object before or after juce has been initialised??
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JUCE_ASSERT_MESSAGE_MANAGER_EXISTS
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}
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ActionBroadcaster::~ActionBroadcaster()
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{
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// all event-based objects must be deleted BEFORE juce is shut down!
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JUCE_ASSERT_MESSAGE_MANAGER_EXISTS
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}
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void ActionBroadcaster::addActionListener (ActionListener* const listener)
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{
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const ScopedLock sl (actionListenerLock);
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if (listener != nullptr)
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actionListeners.add (listener);
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}
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void ActionBroadcaster::removeActionListener (ActionListener* const listener)
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{
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const ScopedLock sl (actionListenerLock);
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actionListeners.removeValue (listener);
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}
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void ActionBroadcaster::removeAllActionListeners()
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{
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const ScopedLock sl (actionListenerLock);
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actionListeners.clear();
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}
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void ActionBroadcaster::sendActionMessage (const String& message) const
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{
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const ScopedLock sl (actionListenerLock);
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for (int i = actionListeners.size(); --i >= 0;)
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(new ActionMessage (this, message, actionListeners.getUnchecked(i)))->post();
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}
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} // namespace juce
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