Update juce, now supporting JUCE_LINUX_EMBED

libs/juce/patches/linux-embed.patch

@@ -0,0 +1,264 @@
+diff --git a/modules/juce_audio_plugin_client/LV2/juce_LV2_Wrapper.cpp b/modules/juce_audio_plugin_client/LV2/juce_LV2_Wrapper.cpp
+index 2f4b727..97e8a96 100644
+--- a/modules/juce_audio_plugin_client/LV2/juce_LV2_Wrapper.cpp
++++ b/modules/juce_audio_plugin_client/LV2/juce_LV2_Wrapper.cpp
+@@ -52,7 +52,7 @@
+  #define JucePlugin_WantsLV2State 1
+ #endif
+ 
+-#if JUCE_LINUX
++#if JUCE_LINUX && ! JUCE_LINUX_EMBED
+  #include <X11/Xlib.h>
+  #undef KeyPress
+ #endif
+@@ -79,12 +79,12 @@
+ 
+ #include "../utility/juce_IncludeModuleHeaders.h"
+ 
++#if JUCE_LINUX && ! JUCE_LINUX_EMBED
+ namespace juce
+ {
+- #if JUCE_LINUX
+   extern Display* display;
+- #endif
+ }
++#endif
+ 
+ #define JUCE_LV2_STATE_STRING_URI "urn:juce:stateString"
+ #define JUCE_LV2_STATE_BINARY_URI "urn:juce:stateBinary"
+@@ -200,6 +200,7 @@ const String makeManifestFile (AudioProcessor* const filter, const String& binar
+     text += "    rdfs:seeAlso <" + binary + ".ttl> .\n";
+     text += "\n";
+ 
++#if ! JUCE_LINUX_EMBED
+     // UIs
+     if (filter->hasEditor())
+     {
+@@ -211,19 +212,20 @@ const String makeManifestFile (AudioProcessor* const filter, const String& binar
+         text += "\n";
+ 
+         text += "<" + pluginURI + "#ParentUI>\n";
+-#if JUCE_MAC
++ #if JUCE_MAC
+         text += "    a ui:CocoaUI ;\n";
+-#elif JUCE_LINUX
++ #elif JUCE_LINUX
+         text += "    a ui:X11UI ;\n";
+-#elif JUCE_WINDOWS
++ #elif JUCE_WINDOWS
+         text += "    a ui:WindowsUI ;\n";
+-#endif
++ #endif
+         text += "    ui:binary <" + binary + PLUGIN_EXT "> ;\n";
+         text += "    lv2:requiredFeature <" LV2_INSTANCE_ACCESS_URI "> ;\n";
+         text += "    lv2:optionalFeature ui:noUserResize ;\n";
+         text += "    lv2:extensionData <" LV2_PROGRAMS__UIInterface "> .\n";
+         text += "\n";
+     }
++#endif
+ 
+ #if JucePlugin_WantsLV2Presets
+     const String presetSeparator(pluginURI.contains("#") ? ":" : "#");
+@@ -273,6 +275,7 @@ const String makePluginFile (AudioProcessor* const filter, const int maxNumInput
+     text += "                      <" LV2_PROGRAMS__Interface "> ;\n";
+     text += "\n";
+ 
++#if ! JUCE_LINUX_EMBED
+     // UIs
+     if (filter->hasEditor())
+     {
+@@ -280,6 +283,7 @@ const String makePluginFile (AudioProcessor* const filter, const int maxNumInput
+         text += "          <" + pluginURI + "#ParentUI> ;\n";
+         text += "\n";
+     }
++#endif
+ 
+     uint32 portIndex = 0;
+ 
+@@ -570,6 +574,7 @@ private:
+ };
+ #endif
+ 
++#if ! JUCE_LINUX_EMBED
+ //==============================================================================
+ /**
+     Lightweight DocumentWindow subclass for external ui
+@@ -1105,6 +1110,8 @@ private:
+     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (JuceLv2UIWrapper)
+ };
+ 
++#endif /* JUCE_LINUX_EMBED */
++
+ //==============================================================================
+ /**
+     Juce LV2 handle
+@@ -1249,7 +1256,9 @@ public:
+     {
+         const MessageManagerLock mmLock;
+ 
++#if ! JUCE_LINUX_EMBED
+         ui = nullptr;
++#endif
+         filter = nullptr;
+ 
+         if (progDesc.name != nullptr)
+@@ -1818,8 +1827,10 @@ public:
+             String stateData (CharPointer_UTF8(static_cast<const char*>(data)));
+             filter->setStateInformationString (stateData);
+ 
++           #if ! JUCE_LINUX_EMBED
+             if (ui != nullptr)
+                 ui->repaint();
++           #endif
+ 
+             return LV2_STATE_SUCCESS;
+         }
+@@ -1828,8 +1839,10 @@ public:
+         {
+             filter->setCurrentProgramStateInformation (data, size);
+ 
++           #if ! JUCE_LINUX_EMBED
+             if (ui != nullptr)
+                 ui->repaint();
++           #endif
+ 
+             return LV2_STATE_SUCCESS;
+         }
+@@ -1852,6 +1865,7 @@ public:
+ #endif
+     }
+ 
++#if ! JUCE_LINUX_EMBED
+     //==============================================================================
+     JuceLv2UIWrapper* getUI (LV2UI_Write_Function writeFunction, LV2UI_Controller controller, LV2UI_Widget* widget,
+                              const LV2_Feature* const* features, bool isExternal)
+@@ -1865,6 +1879,7 @@ public:
+ 
+         return ui;
+     }
++#endif
+ 
+ private:
+ #if JUCE_LINUX
+@@ -1874,7 +1889,9 @@ private:
+ #endif
+ 
+     ScopedPointer<AudioProcessor> filter;
++#if ! JUCE_LINUX_EMBED
+     ScopedPointer<JuceLv2UIWrapper> ui;
++#endif
+     HeapBlock<float*> channels;
+     MidiBuffer midiEvents;
+     int numInChans, numOutChans;
+@@ -2033,6 +2050,7 @@ static const void* juceLV2_ExtensionData (const char* uri)
+     return nullptr;
+ }
+ 
++#if ! JUCE_LINUX_EMBED
+ //==============================================================================
+ // LV2 UI descriptor functions
+ 
+@@ -2068,6 +2086,7 @@ static void juceLV2UI_Cleanup (LV2UI_Handle handle)
+ {
+     ((JuceLv2UIWrapper*)handle)->lv2Cleanup();
+ }
++#endif
+ 
+ //==============================================================================
+ // static LV2 Descriptor objects
+@@ -2083,6 +2102,7 @@ static const LV2_Descriptor JuceLv2Plugin = {
+     juceLV2_ExtensionData
+ };
+ 
++#if ! JUCE_LINUX_EMBED
+ static const LV2UI_Descriptor JuceLv2UI_External = {
+     strdup(String(getPluginURI() + "#ExternalUI").toRawUTF8()),
+     juceLV2UI_InstantiateExternal,
+@@ -2098,14 +2118,17 @@ static const LV2UI_Descriptor JuceLv2UI_Parent = {
+     nullptr,
+     nullptr
+ };
++#endif
+ 
+ static const struct DescriptorCleanup {
+     DescriptorCleanup() {}
+     ~DescriptorCleanup()
+     {
+         free((void*)JuceLv2Plugin.URI);
++#if ! JUCE_LINUX_EMBED
+         free((void*)JuceLv2UI_External.URI);
+         free((void*)JuceLv2UI_Parent.URI);
++#endif
+     }
+ } _descCleanup;
+ 
+@@ -2130,6 +2153,7 @@ JUCE_EXPORTED_FUNCTION const LV2_Descriptor* lv2_descriptor (uint32 index)
+     return (index == 0) ? &JuceLv2Plugin : nullptr;
+ }
+ 
++#if ! JUCE_LINUX_EMBED
+ JUCE_EXPORTED_FUNCTION const LV2UI_Descriptor* lv2ui_descriptor (uint32 index);
+ JUCE_EXPORTED_FUNCTION const LV2UI_Descriptor* lv2ui_descriptor (uint32 index)
+ {
+@@ -2143,5 +2167,6 @@ JUCE_EXPORTED_FUNCTION const LV2UI_Descriptor* lv2ui_descriptor (uint32 index)
+         return nullptr;
+     }
+ }
++#endif
+ 
+ #endif
+diff --git a/modules/juce_audio_processors/juce_audio_processors.cpp b/modules/juce_audio_processors/juce_audio_processors.cpp
+index 8df41ca..4c0a6a1 100644
+--- a/modules/juce_audio_processors/juce_audio_processors.cpp
++++ b/modules/juce_audio_processors/juce_audio_processors.cpp
+@@ -47,7 +47,7 @@
+  #endif
+ #endif
+ 
+-#if JUCE_PLUGINHOST_VST && JUCE_LINUX
++#if JUCE_PLUGINHOST_VST && JUCE_LINUX && ! JUCE_LINUX_EMBED
+  #include <X11/Xlib.h>
+  #include <X11/Xutil.h>
+  #undef KeyPress
+@@ -161,7 +161,9 @@ void AutoResizingNSViewComponentWithParent::timerCallback()
+ #include "format/juce_AudioPluginFormat.cpp"
+ #include "format/juce_AudioPluginFormatManager.cpp"
+ #include "processors/juce_AudioProcessor.cpp"
+-#include "processors/juce_AudioProcessorEditor.cpp"
++#if ! JUCE_LINUX_EMBED
++ #include "processors/juce_AudioProcessorEditor.cpp"
++#endif
+ #include "processors/juce_AudioProcessorGraph.cpp"
+ #include "processors/juce_GenericAudioProcessorEditor.cpp"
+ #include "processors/juce_PluginDescription.cpp"
+diff --git a/modules/juce_events/juce_events.cpp b/modules/juce_events/juce_events.cpp
+index 729a78f..6d69c40 100644
+--- a/modules/juce_events/juce_events.cpp
++++ b/modules/juce_events/juce_events.cpp
+@@ -55,10 +55,12 @@
+  #import <IOKit/pwr_mgt/IOPMLib.h>
+ 
+ #elif JUCE_LINUX
+- #include <X11/Xlib.h>
+- #include <X11/Xresource.h>
+- #include <X11/Xutil.h>
+- #undef KeyPress
++ #if ! JUCE_LINUX_EMBED
++  #include <X11/Xlib.h>
++  #include <X11/Xresource.h>
++  #include <X11/Xutil.h>
++  #undef KeyPress
++ #endif
+  #include <unistd.h>
+ #endif
+ 
+@@ -91,6 +93,9 @@ namespace juce
+ #elif JUCE_WINDOWS
+  #include "native/juce_win32_Messaging.cpp"
+ 
++#elif JUCE_LINUX_EMBED
++ #include "native/juce_linux-embed_Messaging.cpp"
++
+ #elif JUCE_LINUX
+  #include "native/juce_ScopedXLock.h"
+  #include "native/juce_linux_Messaging.cpp"

libs/juce/source/modules/juce_audio_plugin_client/LV2/juce_LV2_Wrapper.cpp

@@ -13,6 +13,7 @@
 #include "../utility/juce_CheckSettingMacros.h"
 #include "../../juce_core/system/juce_TargetPlatform.h" // for JUCE_LINUX
 
+
 #if JucePlugin_Build_LV2
 
 /** Plugin requires processing with a fixed/constant block size */
@@ -51,7 +52,7 @@
  #define JucePlugin_WantsLV2State 1
 #endif
 
-#if JUCE_LINUX
+#if JUCE_LINUX && ! JUCE_LINUX_EMBED
  #include <X11/Xlib.h>
  #undef KeyPress
 #endif
@@ -78,12 +79,12 @@
 
 #include "../utility/juce_IncludeModuleHeaders.h"
 
+#if JUCE_LINUX && ! JUCE_LINUX_EMBED
 namespace juce
 {
- #if JUCE_LINUX
   extern Display* display;
- #endif
 }
+#endif
 
 #define JUCE_LV2_STATE_STRING_URI "urn:juce:stateString"
 #define JUCE_LV2_STATE_BINARY_URI "urn:juce:stateBinary"
@@ -199,6 +200,7 @@ const String makeManifestFile (AudioProcessor* const filter, const String& binar
     text += "    rdfs:seeAlso <" + binary + ".ttl> .\n";
     text += "\n";
 
+#if ! JUCE_LINUX_EMBED
     // UIs
     if (filter->hasEditor())
     {
@@ -210,19 +212,20 @@ const String makeManifestFile (AudioProcessor* const filter, const String& binar
         text += "\n";
 
         text += "<" + pluginURI + "#ParentUI>\n";
-#if JUCE_MAC
+ #if JUCE_MAC
         text += "    a ui:CocoaUI ;\n";
-#elif JUCE_LINUX
+ #elif JUCE_LINUX
         text += "    a ui:X11UI ;\n";
-#elif JUCE_WINDOWS
+ #elif JUCE_WINDOWS
         text += "    a ui:WindowsUI ;\n";
-#endif
+ #endif
         text += "    ui:binary <" + binary + PLUGIN_EXT "> ;\n";
         text += "    lv2:requiredFeature <" LV2_INSTANCE_ACCESS_URI "> ;\n";
         text += "    lv2:optionalFeature ui:noUserResize ;\n";
         text += "    lv2:extensionData <" LV2_PROGRAMS__UIInterface "> .\n";
         text += "\n";
     }
+#endif
 
 #if JucePlugin_WantsLV2Presets
     const String presetSeparator(pluginURI.contains("#") ? ":" : "#");
@@ -243,7 +246,7 @@ const String makeManifestFile (AudioProcessor* const filter, const String& binar
 }
 
 /** Create the -plugin-.ttl file contents */
-const String makePluginFile (AudioProcessor* const filter)
+const String makePluginFile (AudioProcessor* const filter, const int maxNumInputChannels, const int maxNumOutputChannels)
 {
     const String& pluginURI(getPluginURI());
     String text;
@@ -272,6 +275,7 @@ const String makePluginFile (AudioProcessor* const filter)
     text += "                      <" LV2_PROGRAMS__Interface "> ;\n";
     text += "\n";
 
+#if ! JUCE_LINUX_EMBED
     // UIs
     if (filter->hasEditor())
     {
@@ -279,6 +283,7 @@ const String makePluginFile (AudioProcessor* const filter)
         text += "          <" + pluginURI + "#ParentUI> ;\n";
         text += "\n";
     }
+#endif
 
     uint32 portIndex = 0;
 
@@ -345,7 +350,7 @@ const String makePluginFile (AudioProcessor* const filter)
 #endif
 
     // Audio inputs
-    for (int i=0; i < JucePlugin_MaxNumInputChannels; ++i)
+    for (int i=0; i < maxNumInputChannels; ++i)
     {
         if (i == 0)
             text += "    lv2:port [\n";
@@ -357,14 +362,14 @@ const String makePluginFile (AudioProcessor* const filter)
         text += "        lv2:symbol \"lv2_audio_in_" + String(i+1) + "\" ;\n";
         text += "        lv2:name \"Audio Input " + String(i+1) + "\" ;\n";
 
-        if (i+1 == JucePlugin_MaxNumInputChannels)
+        if (i+1 == maxNumInputChannels)
             text += "    ] ;\n\n";
         else
             text += "    ] ,\n";
     }
 
     // Audio outputs
-    for (int i=0; i < JucePlugin_MaxNumOutputChannels; ++i)
+    for (int i=0; i < maxNumOutputChannels; ++i)
     {
         if (i == 0)
             text += "    lv2:port [\n";
@@ -376,7 +381,7 @@ const String makePluginFile (AudioProcessor* const filter)
         text += "        lv2:symbol \"lv2_audio_out_" + String(i+1) + "\" ;\n";
         text += "        lv2:name \"Audio Output " + String(i+1) + "\" ;\n";
 
-        if (i+1 == JucePlugin_MaxNumOutputChannels)
+        if (i+1 == maxNumOutputChannels)
             text += "    ] ;\n\n";
         else
             text += "    ] ,\n";
@@ -519,7 +524,7 @@ void createLv2Files(const char* basename)
 
     std::cout << "Writing " << binary << ".ttl..."; std::cout.flush();
     std::fstream plugin(binaryTTL.toUTF8(), std::ios::out);
-    plugin << makePluginFile(filter) << std::endl;
+    plugin << makePluginFile(filter, JucePlugin_MaxNumInputChannels, JucePlugin_MaxNumOutputChannels) << std::endl;
     plugin.close();
     std::cout << " done!" << std::endl;
 
@@ -569,6 +574,7 @@ private:
 };
 #endif
 
+#if ! JUCE_LINUX_EMBED
 //==============================================================================
 /**
     Lightweight DocumentWindow subclass for external ui
@@ -914,8 +920,12 @@ public:
         }
         else
         {
-            if (parentContainer != nullptr && parentContainer->isOnDesktop())
-                parentContainer->removeFromDesktop();
+            if (parentContainer)
+            {
+                parentContainer->setVisible (false);
+                if (parentContainer->isOnDesktop())
+                    parentContainer->removeFromDesktop();
+            }
         }
     }
 
@@ -1100,6 +1110,8 @@ private:
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (JuceLv2UIWrapper)
 };
 
+#endif /* JUCE_LINUX_EMBED */
+
 //==============================================================================
 /**
     Juce LV2 handle
@@ -1244,7 +1256,9 @@ public:
     {
         const MessageManagerLock mmLock;
 
+#if ! JUCE_LINUX_EMBED
         ui = nullptr;
+#endif
         filter = nullptr;
 
         if (progDesc.name != nullptr)
@@ -1682,6 +1696,8 @@ public:
     uint32_t lv2GetOptions (LV2_Options_Option* options)
     {
         // currently unused
+        ignoreUnused(options);
+
         return LV2_OPTIONS_SUCCESS;
     }
 
@@ -1811,8 +1827,10 @@ public:
             String stateData (CharPointer_UTF8(static_cast<const char*>(data)));
             filter->setStateInformationString (stateData);
 
+           #if ! JUCE_LINUX_EMBED
             if (ui != nullptr)
                 ui->repaint();
+           #endif
 
             return LV2_STATE_SUCCESS;
         }
@@ -1821,8 +1839,10 @@ public:
         {
             filter->setCurrentProgramStateInformation (data, size);
 
+           #if ! JUCE_LINUX_EMBED
             if (ui != nullptr)
                 ui->repaint();
+           #endif
 
             return LV2_STATE_SUCCESS;
         }
@@ -1840,10 +1860,12 @@ public:
         info = curPosInfo;
         return true;
 #else
+        ignoreUnused(info);
         return false;
 #endif
     }
 
+#if ! JUCE_LINUX_EMBED
     //==============================================================================
     JuceLv2UIWrapper* getUI (LV2UI_Write_Function writeFunction, LV2UI_Controller controller, LV2UI_Widget* widget,
                              const LV2_Feature* const* features, bool isExternal)
@@ -1857,6 +1879,7 @@ public:
 
         return ui;
     }
+#endif
 
 private:
 #if JUCE_LINUX
@@ -1866,7 +1889,9 @@ private:
 #endif
 
     ScopedPointer<AudioProcessor> filter;
+#if ! JUCE_LINUX_EMBED
     ScopedPointer<JuceLv2UIWrapper> ui;
+#endif
     HeapBlock<float*> channels;
     MidiBuffer midiEvents;
     int numInChans, numOutChans;
@@ -2025,6 +2050,7 @@ static const void* juceLV2_ExtensionData (const char* uri)
     return nullptr;
 }
 
+#if ! JUCE_LINUX_EMBED
 //==============================================================================
 // LV2 UI descriptor functions
 
@@ -2060,6 +2086,7 @@ static void juceLV2UI_Cleanup (LV2UI_Handle handle)
 {
     ((JuceLv2UIWrapper*)handle)->lv2Cleanup();
 }
+#endif
 
 //==============================================================================
 // static LV2 Descriptor objects
@@ -2075,6 +2102,7 @@ static const LV2_Descriptor JuceLv2Plugin = {
     juceLV2_ExtensionData
 };
 
+#if ! JUCE_LINUX_EMBED
 static const LV2UI_Descriptor JuceLv2UI_External = {
     strdup(String(getPluginURI() + "#ExternalUI").toRawUTF8()),
     juceLV2UI_InstantiateExternal,
@@ -2090,14 +2118,17 @@ static const LV2UI_Descriptor JuceLv2UI_Parent = {
     nullptr,
     nullptr
 };
+#endif
 
 static const struct DescriptorCleanup {
     DescriptorCleanup() {}
     ~DescriptorCleanup()
     {
         free((void*)JuceLv2Plugin.URI);
+#if ! JUCE_LINUX_EMBED
         free((void*)JuceLv2UI_External.URI);
         free((void*)JuceLv2UI_Parent.URI);
+#endif
     }
 } _descCleanup;
 
@@ -2122,6 +2153,7 @@ JUCE_EXPORTED_FUNCTION const LV2_Descriptor* lv2_descriptor (uint32 index)
     return (index == 0) ? &JuceLv2Plugin : nullptr;
 }
 
+#if ! JUCE_LINUX_EMBED
 JUCE_EXPORTED_FUNCTION const LV2UI_Descriptor* lv2ui_descriptor (uint32 index);
 JUCE_EXPORTED_FUNCTION const LV2UI_Descriptor* lv2ui_descriptor (uint32 index)
 {
@@ -2135,5 +2167,6 @@ JUCE_EXPORTED_FUNCTION const LV2UI_Descriptor* lv2ui_descriptor (uint32 index)
         return nullptr;
     }
 }
+#endif
 
 #endif

libs/juce/source/modules/juce_audio_processors/juce_audio_processors.cpp

@@ -47,7 +47,7 @@
  #endif
 #endif
 
-#if JUCE_PLUGINHOST_VST && JUCE_LINUX
+#if JUCE_PLUGINHOST_VST && JUCE_LINUX && ! JUCE_LINUX_EMBED
  #include <X11/Xlib.h>
  #include <X11/Xutil.h>
  #undef KeyPress
@@ -161,7 +161,9 @@ void AutoResizingNSViewComponentWithParent::timerCallback()
 #include "format/juce_AudioPluginFormat.cpp"
 #include "format/juce_AudioPluginFormatManager.cpp"
 #include "processors/juce_AudioProcessor.cpp"
-#include "processors/juce_AudioProcessorEditor.cpp"
+#if ! JUCE_LINUX_EMBED
+ #include "processors/juce_AudioProcessorEditor.cpp"
+#endif
 #include "processors/juce_AudioProcessorGraph.cpp"
 #include "processors/juce_GenericAudioProcessorEditor.cpp"
 #include "processors/juce_PluginDescription.cpp"

libs/juce/source/modules/juce_events/juce_events.cpp

@@ -55,10 +55,12 @@
  #import <IOKit/pwr_mgt/IOPMLib.h>
 
 #elif JUCE_LINUX
- #include <X11/Xlib.h>
- #include <X11/Xresource.h>
- #include <X11/Xutil.h>
- #undef KeyPress
+ #if ! JUCE_LINUX_EMBED
+  #include <X11/Xlib.h>
+  #include <X11/Xresource.h>
+  #include <X11/Xutil.h>
+  #undef KeyPress
+ #endif
  #include <unistd.h>
 #endif
 
@@ -91,6 +93,9 @@ namespace juce
 #elif JUCE_WINDOWS
  #include "native/juce_win32_Messaging.cpp"
 
+#elif JUCE_LINUX_EMBED
+ #include "native/juce_linux-embed_Messaging.cpp"
+
 #elif JUCE_LINUX
  #include "native/juce_ScopedXLock.h"
  #include "native/juce_linux_Messaging.cpp"

libs/juce/source/modules/juce_events/native/juce_linux-embed_Messaging.cpp

@@ -0,0 +1,153 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2016 - ROLI Ltd.
+
+   Permission is granted to use this software 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.
+
+   THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH REGARD
+   TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+   FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT,
+   OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+   USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+   TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+   OF THIS SOFTWARE.
+
+   -----------------------------------------------------------------------------
+
+   To release a closed-source product which uses other parts of JUCE not
+   licensed under the ISC terms, commercial licenses are available: visit
+   www.juce.com for more information.
+
+  ==============================================================================
+*/
+
+//==============================================================================
+class EventsThread : public Thread
+{
+public:
+    EventsThread()
+        : Thread("EventsThread"),
+          initializing(false) {}
+
+    ~EventsThread()
+    {
+        signalThreadShouldExit();
+        stopThread(2000);
+
+        const ScopedLock sl(queueLock);
+        jassert(queue.size() == 0);
+        queue.clear();
+    }
+
+    bool postMessage(MessageManager::MessageBase* const msg)
+    {
+        const ScopedLock sl(queueLock);
+        queue.add(msg);
+        return true;
+    }
+
+    bool isInitializing() const noexcept
+    {
+        return initializing;
+    }
+
+protected:
+    void run() override
+    {
+        /*
+         * We need to know when we're initializing because MessageManager::setCurrentThreadAsMessageThread()
+         * calls doPlatformSpecificInitialisation/Shutdown, in which we started this thread previously.
+         * To avoid a deadlock we do not call start/stopThread if still initializing.
+         */
+        initializing = true;
+
+        if (MessageManager* const msgMgr = MessageManager::getInstance())
+            msgMgr->setCurrentThreadAsMessageThread();
+
+        initializing = false;
+
+        for (; ! threadShouldExit();)
+        {
+            // dispatch messages until no more present, then sleep
+            for (; dispatchNextInternalMessage();) {}
+
+            sleep(25);
+        }
+    }
+
+private:
+    volatile bool initializing;
+    ReferenceCountedArray<MessageManager::MessageBase> queue;
+    CriticalSection queueLock;
+
+    MessageManager::MessageBase::Ptr popNextMessage()
+    {
+        const ScopedLock sl(queueLock);
+        return queue.removeAndReturn(0);
+    }
+
+    bool dispatchNextInternalMessage()
+    {
+        if (const MessageManager::MessageBase::Ptr msg = popNextMessage())
+        {
+            JUCE_TRY
+            {
+                msg->messageCallback();
+                return true;
+            }
+            JUCE_CATCH_EXCEPTION
+        }
+
+        return false;
+    }
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(EventsThread)
+};
+
+static EventsThread& getEventsThreadInstance()
+{
+    static EventsThread eventsThread;
+    return eventsThread;
+}
+
+//==============================================================================
+void MessageManager::doPlatformSpecificInitialisation()
+{
+    EventsThread& eventsThread(getEventsThreadInstance());
+
+    if (! eventsThread.isInitializing())
+        eventsThread.startThread();
+}
+
+void MessageManager::doPlatformSpecificShutdown()
+{
+    EventsThread& eventsThread(getEventsThreadInstance());
+
+    if (! eventsThread.isInitializing())
+        eventsThread.stopThread(-1);
+}
+
+bool MessageManager::postMessageToSystemQueue (MessageManager::MessageBase* const message)
+{
+    EventsThread& eventsThread(getEventsThreadInstance());
+    return eventsThread.postMessage(message);
+}
+
+void MessageManager::broadcastMessage (const String& /* value */)
+{
+    /* TODO */
+}
+
+// this function expects that it will NEVER be called simultaneously for two concurrent threads
+bool MessageManager::dispatchNextMessageOnSystemQueue (bool returnIfNoPendingMessages)
+{
+    DBG ("MessageManager::dispatchNextMessageOnSystemQueue() unsupported");
+    return false;
+}