git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/modules/juce_events/broadcasters/juce_ActionBroadcaster.cpp

@@ -0,0 +1,92 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2020 - Raw Material Software Limited
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   The code included in this file is provided under the terms of the ISC license
+   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
+   To use, copy, modify, and/or distribute this software for any purpose with or
+   without fee is hereby granted provided that the above copyright notice and
+   this permission notice appear in all copies.
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+
+class ActionBroadcaster::ActionMessage  : public MessageManager::MessageBase
+{
+public:
+    ActionMessage (const ActionBroadcaster* ab,
+                   const String& messageText, ActionListener* l) noexcept
+        : broadcaster (const_cast<ActionBroadcaster*> (ab)),
+          message (messageText),
+          listener (l)
+    {}
+
+    void messageCallback() override
+    {
+        if (auto b = broadcaster.get())
+            if (b->actionListeners.contains (listener))
+                listener->actionListenerCallback (message);
+    }
+
+private:
+    WeakReference<ActionBroadcaster> broadcaster;
+    const String message;
+    ActionListener* const listener;
+
+    JUCE_DECLARE_NON_COPYABLE (ActionMessage)
+};
+
+//==============================================================================
+ActionBroadcaster::ActionBroadcaster()
+{
+    // are you trying to create this object before or after juce has been initialised??
+    JUCE_ASSERT_MESSAGE_MANAGER_EXISTS
+}
+
+ActionBroadcaster::~ActionBroadcaster()
+{
+    // all event-based objects must be deleted BEFORE juce is shut down!
+    JUCE_ASSERT_MESSAGE_MANAGER_EXISTS
+}
+
+void ActionBroadcaster::addActionListener (ActionListener* const listener)
+{
+    const ScopedLock sl (actionListenerLock);
+
+    if (listener != nullptr)
+        actionListeners.add (listener);
+}
+
+void ActionBroadcaster::removeActionListener (ActionListener* const listener)
+{
+    const ScopedLock sl (actionListenerLock);
+    actionListeners.removeValue (listener);
+}
+
+void ActionBroadcaster::removeAllActionListeners()
+{
+    const ScopedLock sl (actionListenerLock);
+    actionListeners.clear();
+}
+
+void ActionBroadcaster::sendActionMessage (const String& message) const
+{
+    const ScopedLock sl (actionListenerLock);
+
+    for (int i = actionListeners.size(); --i >= 0;)
+        (new ActionMessage (this, message, actionListeners.getUnchecked(i)))->post();
+}
+
+} // namespace juce