fix macOS build (following Projucer changes made in Windows, which removed /Applications/JUCE/modules from its headers). move JUCE headers under source control, so that Windows and macOS can both build against same version of JUCE. remove AUv3 target (I think it's an iOS thing, so it will never work with this macOS fluidsynth dylib).

modules/juce_gui_basics/commands/juce_ApplicationCommandTarget.cpp

@@ -0,0 +1,187 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2017 - ROLI Ltd.
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
+   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
+   27th April 2017).
+
+   End User License Agreement: www.juce.com/juce-5-licence
+   Privacy Policy: www.juce.com/juce-5-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   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 ApplicationCommandTarget::CommandMessage  : public MessageManager::MessageBase
+{
+public:
+    CommandMessage (ApplicationCommandTarget* const target, const InvocationInfo& inf)
+        : owner (target), info (inf)
+    {
+    }
+
+    void messageCallback() override
+    {
+        if (ApplicationCommandTarget* const target = owner)
+            target->tryToInvoke (info, false);
+    }
+
+private:
+    WeakReference<ApplicationCommandTarget> owner;
+    const InvocationInfo info;
+
+    JUCE_DECLARE_NON_COPYABLE (CommandMessage)
+};
+
+//==============================================================================
+ApplicationCommandTarget::ApplicationCommandTarget() {}
+ApplicationCommandTarget::~ApplicationCommandTarget() {}
+
+//==============================================================================
+bool ApplicationCommandTarget::tryToInvoke (const InvocationInfo& info, const bool async)
+{
+    if (isCommandActive (info.commandID))
+    {
+        if (async)
+        {
+            (new CommandMessage (this, info))->post();
+            return true;
+        }
+
+        if (perform (info))
+            return true;
+
+        // Hmm.. your target claimed that it could perform this command, but failed to do so.
+        // If it can't do it at the moment for some reason, it should clear the 'isActive' flag
+        // when it returns the command's info.
+        jassertfalse;
+    }
+
+    return false;
+}
+
+ApplicationCommandTarget* ApplicationCommandTarget::findFirstTargetParentComponent()
+{
+    if (Component* const c = dynamic_cast<Component*> (this))
+        return c->findParentComponentOfClass<ApplicationCommandTarget>();
+
+    return nullptr;
+}
+
+ApplicationCommandTarget* ApplicationCommandTarget::getTargetForCommand (const CommandID commandID)
+{
+    ApplicationCommandTarget* target = this;
+    int depth = 0;
+
+    while (target != nullptr)
+    {
+        Array<CommandID> commandIDs;
+        target->getAllCommands (commandIDs);
+
+        if (commandIDs.contains (commandID))
+            return target;
+
+        target = target->getNextCommandTarget();
+
+        ++depth;
+        jassert (depth < 100); // could be a recursive command chain??
+        jassert (target != this); // definitely a recursive command chain!
+
+        if (depth > 100 || target == this)
+            break;
+    }
+
+    if (target == nullptr)
+    {
+        target = JUCEApplication::getInstance();
+
+        if (target != nullptr)
+        {
+            Array<CommandID> commandIDs;
+            target->getAllCommands (commandIDs);
+
+            if (commandIDs.contains (commandID))
+                return target;
+        }
+    }
+
+    return nullptr;
+}
+
+bool ApplicationCommandTarget::isCommandActive (const CommandID commandID)
+{
+    ApplicationCommandInfo info (commandID);
+    info.flags = ApplicationCommandInfo::isDisabled;
+
+    getCommandInfo (commandID, info);
+
+    return (info.flags & ApplicationCommandInfo::isDisabled) == 0;
+}
+
+//==============================================================================
+bool ApplicationCommandTarget::invoke (const InvocationInfo& info, const bool async)
+{
+    ApplicationCommandTarget* target = this;
+    int depth = 0;
+
+    while (target != nullptr)
+    {
+        if (target->tryToInvoke (info, async))
+            return true;
+
+        target = target->getNextCommandTarget();
+
+        ++depth;
+        jassert (depth < 100); // could be a recursive command chain??
+        jassert (target != this); // definitely a recursive command chain!
+
+        if (depth > 100 || target == this)
+            break;
+    }
+
+    if (target == nullptr)
+    {
+        target = JUCEApplication::getInstance();
+
+        if (target != nullptr)
+            return target->tryToInvoke (info, async);
+    }
+
+    return false;
+}
+
+bool ApplicationCommandTarget::invokeDirectly (const CommandID commandID, const bool asynchronously)
+{
+    ApplicationCommandTarget::InvocationInfo info (commandID);
+    info.invocationMethod = ApplicationCommandTarget::InvocationInfo::direct;
+
+    return invoke (info, asynchronously);
+}
+
+//==============================================================================
+ApplicationCommandTarget::InvocationInfo::InvocationInfo (const CommandID command)
+    : commandID (command),
+      commandFlags (0),
+      invocationMethod (direct),
+      originatingComponent (nullptr),
+      isKeyDown (false),
+      millisecsSinceKeyPressed (0)
+{
+}
+
+} // namespace juce