From f77c995b4d03a7dae62ea9e31637d227cd8f8934 Mon Sep 17 00:00:00 2001
From: ed <eddavies95@gmail.com>
Date: Thu, 23 Aug 2018 14:15:28 +0100
Subject: [PATCH] Projucer:  Refactored module scanning code and added
 AvailableModuleList class for asynchronous scanning

---
 .../jucer_GlobalPathsWindowComponent.h        |  30 +-
 .../Source/Application/jucer_Application.cpp  |  38 +-
 .../Source/Application/jucer_Application.h    |   9 +
 .../Source/Application/jucer_CommandLine.cpp  |   2 +-
 .../jucer_CompileEngineClient.cpp             |  12 +-
 .../UI/Sidebar/jucer_ModuleTreeItems.h        | 188 +++++-----
 .../UI/jucer_ModulesInformationComponent.h    |  22 +-
 .../Projucer/Source/Project/jucer_Module.cpp  | 350 +++++++-----------
 extras/Projucer/Source/Project/jucer_Module.h |  68 ++--
 .../Projucer/Source/Project/jucer_Project.cpp | 144 +++++--
 .../Projucer/Source/Project/jucer_Project.h   |  11 +-
 .../jucer_ProjectExport_Android.h             |   2 +-
 .../jucer_ProjectExport_CodeBlocks.h          |   2 +-
 .../ProjectSaving/jucer_ProjectExport_Make.h  |   4 +-
 .../ProjectSaving/jucer_ProjectExport_Xcode.h |   2 +-
 .../ProjectSaving/jucer_ProjectExporter.cpp   |  30 +-
 .../Source/ProjectSaving/jucer_ProjectSaver.h |   6 +-
 .../Helpers/jucer_TranslationHelpers.h        |   2 +-
 .../Source/Wizards/jucer_NewProjectWizard.h   |  12 +-
 19 files changed, 502 insertions(+), 432 deletions(-)

diff --git a/extras/Projucer/Source/Application/Windows/jucer_GlobalPathsWindowComponent.h b/extras/Projucer/Source/Application/Windows/jucer_GlobalPathsWindowComponent.h
index 6346b80cdc..12da6958ae 100644
--- a/extras/Projucer/Source/Application/Windows/jucer_GlobalPathsWindowComponent.h
+++ b/extras/Projucer/Source/Application/Windows/jucer_GlobalPathsWindowComponent.h
@@ -59,6 +59,12 @@ public:
         else if (os == TargetOS::windows) osSelector.setSelectedId (2);
         else if (os == TargetOS::linux)   osSelector.setSelectedId (3);
 
+        addChildComponent (rescanJUCEPathButton);
+        rescanJUCEPathButton.onClick = [] { ProjucerApplication::getApp().rescanJUCEPathModules(); };
+
+        addChildComponent (rescanUserPathButton);
+        rescanUserPathButton.onClick = [] { ProjucerApplication::getApp().rescanUserPathModules(); };
+
         updateFilePathPropertyComponents();
     }
 
@@ -85,6 +91,7 @@ public:
 
         int labelIndex = 0;
         bool isFirst = true;
+        bool showRescanButtons = (rescanJUCEPathButton.isVisible() && rescanUserPathButton.isVisible());
 
         for (auto* pathComp : pathPropertyComponents)
         {
@@ -99,7 +106,20 @@ public:
                 if (isFirst)
                     b.removeFromTop (20);
 
-                pathComp->setBounds (b.removeFromTop (pathComp->getPreferredHeight()));
+                auto compBounds = b.removeFromTop (pathComp->getPreferredHeight());
+
+                if (showRescanButtons)
+                {
+                    auto propName = pathComp->getName();
+
+                    if (propName == "JUCE Modules")
+                        rescanJUCEPathButton.setBounds (compBounds.removeFromRight (75).reduced (5, 0));
+                    else if (propName == "User Modules")
+                        rescanUserPathButton.setBounds (compBounds.removeFromRight (75).reduced (5, 0));
+                }
+
+
+                pathComp->setBounds (compBounds);
                 b.removeFromTop (5);
             }
 
@@ -124,6 +144,8 @@ public:
 private:
     OwnedArray<Label> pathPropertyLabels;
     OwnedArray<PropertyComponent> pathPropertyComponents;
+    TextButton rescanJUCEPathButton { "Re-scan" },
+               rescanUserPathButton { "Re-scan" };
 
     ComboBox osSelector;
     InfoButton info;
@@ -228,6 +250,9 @@ private:
 
             addAndMakeVisible (pathPropertyComponents.add (new FilePathPropertyComponent (settings.getStoredPath (Ids::androidStudioExePath),
                                                            "Android Studio " + exeLabel, false)));
+
+            rescanJUCEPathButton.setVisible (true);
+            rescanUserPathButton.setVisible (true);
         }
         else
         {
@@ -267,6 +292,9 @@ private:
 
             addAndMakeVisible (pathPropertyComponents.add (new TextPropertyComponent (settings.getFallbackPathForOS (Ids::vst3Path, selectedOS),
                                                                                       "Custom VST3 SDK", maxChars, false)));
+
+            rescanJUCEPathButton.setVisible (false);
+            rescanUserPathButton.setVisible (false);
         }
 
         resized();
diff --git a/extras/Projucer/Source/Application/jucer_Application.cpp b/extras/Projucer/Source/Application/jucer_Application.cpp
index 78479cc1af..b4276acaae 100644
--- a/extras/Projucer/Source/Application/jucer_Application.cpp
+++ b/extras/Projucer/Source/Application/jucer_Application.cpp
@@ -81,11 +81,11 @@ void ProjucerApplication::initialise (const String& commandLine)
                               + "MHz  Cores: " + String (SystemStats::getNumCpus())
                               + "  " + String (SystemStats::getMemorySizeInMegabytes()) + "MB");
 
-        initialiseBasics();
-
         isRunningCommandLine = commandLine.isNotEmpty()
                                 && ! commandLine.startsWith ("-NSDocumentRevisionsDebugMode");
 
+        initialiseBasics();
+
         licenseController.reset (new LicenseController);
         licenseController->addLicenseStatusChangedCallback (this);
 
@@ -136,6 +136,9 @@ void ProjucerApplication::initialiseBasics()
     ImageCache::setCacheTimeout (30 * 1000);
     icons.reset (new Icons());
     tooltipWindow.setMillisecondsBeforeTipAppears (1200);
+
+    rescanJUCEPathModules();
+    rescanUserPathModules();
 }
 
 bool ProjucerApplication::initialiseLogger (const char* filePrefix)
@@ -1415,6 +1418,37 @@ void ProjucerApplication::showSetJUCEPathAlert()
 
 }
 
+void ProjucerApplication::rescanJUCEPathModules()
+{
+    File jucePath (getAppSettings().getStoredPath (Ids::defaultJuceModulePath).toString());
+
+    if (isRunningCommandLine)
+        jucePathModuleList.scanPaths ({ jucePath });
+    else
+        jucePathModuleList.scanPathsAsync ({ jucePath });
+}
+
+static Array<File> getSanitisedUserModulePaths()
+{
+    Array<File> paths;
+
+    for (auto p : StringArray::fromTokens (getAppSettings().getStoredPath (Ids::defaultUserModulePath).toString(), ";", {}))
+    {
+        p = p.replace ("~", File::getSpecialLocation (File::userHomeDirectory).getFullPathName());
+        paths.add (File::createFileWithoutCheckingPath (p.trim()));
+    }
+
+    return paths;
+}
+
+void ProjucerApplication::rescanUserPathModules()
+{
+    if (isRunningCommandLine)
+        userPathsModuleList.scanPaths (getSanitisedUserModulePaths());
+    else
+        userPathsModuleList.scanPathsAsync (getSanitisedUserModulePaths());
+}
+
 void ProjucerApplication::selectEditorColourSchemeWithName (const String& schemeName)
 {
     auto& appearanceSettings = getAppSettings().appearance;
diff --git a/extras/Projucer/Source/Application/jucer_Application.h b/extras/Projucer/Source/Application/jucer_Application.h
index 674b5613bf..8a1c98211b 100644
--- a/extras/Projucer/Source/Application/jucer_Application.h
+++ b/extras/Projucer/Source/Application/jucer_Application.h
@@ -139,6 +139,13 @@ public:
     //==============================================================================
     void setAnalyticsEnabled (bool);
 
+    //==============================================================================
+    void rescanJUCEPathModules();
+    void rescanUserPathModules();
+
+    AvailableModuleList& getJUCEPathModuleList()     { return jucePathModuleList; }
+    AvailableModuleList& getUserPathsModuleList()    { return userPathsModuleList; }
+
     //==============================================================================
     ProjucerLookAndFeel lookAndFeel;
 
@@ -204,6 +211,8 @@ private:
     void showSetJUCEPathAlert();
     std::unique_ptr<AlertWindow> pathAlert;
 
+    AvailableModuleList jucePathModuleList, userPathsModuleList;
+
     //==============================================================================
     void setColourScheme (int index, bool saveSetting);
 
diff --git a/extras/Projucer/Source/Application/jucer_CommandLine.cpp b/extras/Projucer/Source/Application/jucer_CommandLine.cpp
index 39e57c57f7..965abed923 100644
--- a/extras/Projucer/Source/Application/jucer_CommandLine.cpp
+++ b/extras/Projucer/Source/Application/jucer_CommandLine.cpp
@@ -206,7 +206,7 @@ namespace
                   << "Name: " << proj.project->getProjectNameString() << std::endl
                   << "UID: " << proj.project->getProjectUIDString() << std::endl;
 
-        EnabledModuleList& modules = proj.project->getModules();
+        EnabledModuleList& modules = proj.project->getEnabledModules();
 
         if (int numModules = modules.getNumModules())
         {
diff --git a/extras/Projucer/Source/LiveBuildEngine/jucer_CompileEngineClient.cpp b/extras/Projucer/Source/LiveBuildEngine/jucer_CompileEngineClient.cpp
index 10fc8d06c0..042aa71bfe 100644
--- a/extras/Projucer/Source/LiveBuildEngine/jucer_CompileEngineClient.cpp
+++ b/extras/Projucer/Source/LiveBuildEngine/jucer_CompileEngineClient.cpp
@@ -370,13 +370,13 @@ private:
         scanProjectItem (proj.getMainGroup(), compileUnits, userFiles);
 
         {
-            auto isVSTHost = project.getModules().isModuleEnabled ("juce_audio_processors")
+            auto isVSTHost = project.getEnabledModules().isModuleEnabled ("juce_audio_processors")
                    && (project.isConfigFlagEnabled ("JUCE_PLUGINHOST_VST3") || project.isConfigFlagEnabled ("JUCE_PLUGINHOST_VST"));
 
             auto isPluginProject = proj.getProjectType().isAudioPlugin();
 
             OwnedArray<LibraryModule> modules;
-            proj.getModules().createRequiredModules (modules);
+            proj.getEnabledModules().createRequiredModules (modules);
 
             for (Project::ExporterIterator exporter (proj); exporter.next();)
             {
@@ -384,7 +384,7 @@ private:
                 {
                     for (auto* m : modules)
                     {
-                        auto localModuleFolder = proj.getModules().shouldCopyModuleFilesLocally (m->moduleInfo.getID()).getValue()
+                        auto localModuleFolder = proj.getEnabledModules().shouldCopyModuleFilesLocally (m->moduleInfo.getID()).getValue()
                                                         ? proj.getLocalModuleFolder (m->moduleInfo.getID())
                                                         : m->moduleInfo.getFolder();
 
@@ -435,7 +435,7 @@ private:
     static bool areAnyModulesMissing (Project& project)
     {
         OwnedArray<LibraryModule> modules;
-        project.getModules().createRequiredModules (modules);
+        project.getEnabledModules().createRequiredModules (modules);
 
         for (auto* module : modules)
             if (! module->getFolder().isDirectory())
@@ -458,7 +458,7 @@ private:
         StringArray paths;
         paths.addArray (getSearchPathsFromString (project.getCompileEngineSettings().getSystemHeaderPathString()));
 
-        auto isVSTHost = project.getModules().isModuleEnabled ("juce_audio_processors")
+        auto isVSTHost = project.getEnabledModules().isModuleEnabled ("juce_audio_processors")
                        && (project.isConfigFlagEnabled ("JUCE_PLUGINHOST_VST3")
                              || project.isConfigFlagEnabled ("JUCE_PLUGINHOST_VST"));
 
@@ -468,7 +468,7 @@ private:
             paths.add (customVst3Path);
 
         OwnedArray<LibraryModule> modules;
-        project.getModules().createRequiredModules (modules);
+        project.getEnabledModules().createRequiredModules (modules);
 
         for (auto* module : modules)
         {
diff --git a/extras/Projucer/Source/Project/UI/Sidebar/jucer_ModuleTreeItems.h b/extras/Projucer/Source/Project/UI/Sidebar/jucer_ModuleTreeItems.h
index 79e9b9dead..546aa54106 100644
--- a/extras/Projucer/Source/Project/UI/Sidebar/jucer_ModuleTreeItems.h
+++ b/extras/Projucer/Source/Project/UI/Sidebar/jucer_ModuleTreeItems.h
@@ -34,10 +34,10 @@ public:
     ModuleItem (Project& p, const String& modID)
         : project (p), moduleID (modID)
     {
-        missingDependencies = project.getModules().getExtraDependenciesNeeded (moduleID).size() > 0;
-        cppStandardHigherThanProject = project.getModules().doesModuleHaveHigherCppStandardThanProject (moduleID);
+        missingDependencies = project.getEnabledModules().getExtraDependenciesNeeded (moduleID).size() > 0;
+        cppStandardHigherThanProject = project.getEnabledModules().doesModuleHaveHigherCppStandardThanProject (moduleID);
 
-        moduleInfo = project.getModules().getModuleInfo (moduleID);
+        moduleInfo = project.getEnabledModules().getModuleInfo (moduleID);
     }
 
     bool canBeSelected() const override       { return true; }
@@ -57,7 +57,7 @@ public:
     void deleteItem() override
     {
         closeSettingsPage();
-        project.getModules().removeModule (moduleID);
+        project.getEnabledModules().removeModule (moduleID);
     }
 
     Icon getIcon() const override
@@ -101,7 +101,7 @@ public:
     bool checkCppStandard()
     {
         auto oldVal = cppStandardHigherThanProject;
-        cppStandardHigherThanProject = project.getModules().doesModuleHaveHigherCppStandardThanProject (moduleID);
+        cppStandardHigherThanProject = project.getEnabledModules().doesModuleHaveHigherCppStandardThanProject (moduleID);
 
         if (oldVal != cppStandardHigherThanProject)
             return true;
@@ -137,7 +137,7 @@ private:
     {
     public:
         ModuleSettingsPanel (Project& p, const String& modID, TreeView* tree)
-            : group (p.getModules().getModuleInfo (modID).getID(),
+            : group (p.getEnabledModules().getModuleInfo (modID).getID(),
                      Icon (getIcons().singleModule, Colours::transparentBlack)),
               project (p),
               modulesTree (tree),
@@ -149,7 +149,7 @@ private:
 
         void refresh()
         {
-            auto& modules = project.getModules();
+            auto& modules = project.getEnabledModules();
 
             setEnabled (modules.isModuleEnabled (moduleID));
 
@@ -284,7 +284,7 @@ private:
 
             void refresh() override
             {
-                info = project.getModules().getModuleInfo (moduleID);
+                info = project.getEnabledModules().getModuleInfo (moduleID);
                 repaint();
             }
 
@@ -337,7 +337,7 @@ private:
             MissingDependenciesComponent (Project& p, const String& modID)
                 : PropertyComponent ("Dependencies", 100),
                   project (p), moduleID (modID),
-                  missingDependencies (project.getModules().getExtraDependenciesNeeded (modID))
+                  missingDependencies (project.getEnabledModules().getExtraDependenciesNeeded (modID))
             {
                 addAndMakeVisible (fixButton);
                 fixButton.setColour (TextButton::buttonColourId, Colours::red);
@@ -359,28 +359,14 @@ private:
 
             void fixDependencies()
             {
-                ModuleList list;
-
-                list.scanGlobalJuceModulePath();
-
-                if (! tryToFix (list))
+                if (! tryToFix())
                 {
-                    list.scanGlobalUserModulePath();
+                    AlertWindow::showMessageBoxAsync (AlertWindow::WarningIcon,
+                                                      "Adding Missing Dependencies",
+                                                      "Couldn't locate some of these modules - you'll need to find their "
+                                                      "folders manually and add them to the list.");
 
-                    if (! tryToFix (list))
-                    {
-                        list.scanProjectExporterModulePaths (project);
-
-                        if (! tryToFix (list))
-                        {
-                            AlertWindow::showMessageBoxAsync (AlertWindow::WarningIcon,
-                                                              "Adding Missing Dependencies",
-                                                              "Couldn't locate some of these modules - you'll need to find their "
-                                                              "folders manually and add them to the list.");
-
-                            return;
-                        }
-                    }
+                    return;
                 }
 
                 refreshAndReselectItem();
@@ -397,18 +383,21 @@ private:
             StringArray missingDependencies;
             TextButton fixButton { "Add Required Modules" };
 
-            bool tryToFix (ModuleList& list)
+            bool tryToFix()
             {
-                auto& modules      = project.getModules();
-                auto copyLocally   = modules.areMostModulesCopiedLocally();
-                auto useGlobalPath = modules.areMostModulesUsingGlobalPath();
+                auto& enabledModules   = project.getEnabledModules();
+
+                auto copyLocally       = enabledModules.areMostModulesCopiedLocally();
+                auto useGlobalPath     = enabledModules.areMostModulesUsingGlobalPath();
 
                 StringArray missing;
 
                 for (auto missingModule : missingDependencies)
                 {
-                    if (auto* info = list.getModuleWithID (missingModule))
-                        modules.addModule (info->moduleFolder, copyLocally, useGlobalPath, false);
+                    auto mod = project.getModuleWithID (missingModule);
+
+                    if (mod.second != File())
+                        enabledModules.addModule (mod.second, copyLocally, useGlobalPath, false);
                     else
                         missing.add (missingModule);
                 }
@@ -477,22 +466,28 @@ private:
 //==============================================================================
 class EnabledModulesItem   : public ProjectTreeItemBase,
                              private Value::Listener,
-                             private Timer
+                             private AvailableModuleList::Listener
 {
 public:
     EnabledModulesItem (Project& p)
         : project (p),
-          moduleListTree (p.getModules().state)
+          moduleListTree (p.getEnabledModules().state)
     {
         moduleListTree.addListener (this);
 
         projectCppStandardValue.referTo (project.getProjectValue (Ids::cppLanguageStandard));
-        defaultJuceModulePathValue.referTo (getAppSettings().getStoredPath (Ids::defaultJuceModulePath));
-        defaultUserModulePathValue.referTo (getAppSettings().getStoredPath (Ids::defaultUserModulePath));
-
         projectCppStandardValue.addListener (this);
-        defaultJuceModulePathValue.addListener (this);
-        defaultUserModulePathValue.addListener (this);
+
+        ProjucerApplication::getApp().getJUCEPathModuleList().addListener (this);
+        ProjucerApplication::getApp().getUserPathsModuleList().addListener (this);
+        project.getExporterPathsModuleList().addListener (this);
+    }
+
+    ~EnabledModulesItem()
+    {
+        ProjucerApplication::getApp().getJUCEPathModuleList().removeListener (this);
+        ProjucerApplication::getApp().getUserPathsModuleList().removeListener (this);
+        project.getExporterPathsModuleList().removeListener (this);
     }
 
     int getItemHeight() const override      { return 22; }
@@ -542,51 +537,63 @@ public:
         }
 
         for (int i = 0; i < modules.size(); ++i)
-            project.getModules().addModule (modules.getReference(i).moduleFolder,
-                                            project.getModules().areMostModulesCopiedLocally(),
-                                            project.getModules().areMostModulesUsingGlobalPath(),
+            project.getEnabledModules().addModule (modules.getReference(i).moduleFolder,
+                                            project.getEnabledModules().areMostModulesCopiedLocally(),
+                                            project.getEnabledModules().areMostModulesUsingGlobalPath(),
                                             true);
     }
 
     void addSubItems() override
     {
-        for (int i = 0; i < project.getModules().getNumModules(); ++i)
-            addSubItem (new ModuleItem (project, project.getModules().getModuleID (i)));
+        for (int i = 0; i < project.getEnabledModules().getNumModules(); ++i)
+            addSubItem (new ModuleItem (project, project.getEnabledModules().getModuleID (i)));
     }
 
     void showPopupMenu() override
     {
-        auto& modules = project.getModules();
-        PopupMenu knownModules, jucePathModules, userPathModules, exporterPathsModules;
-
-        ModuleList list;
-
-        list.scanGlobalJuceModulePath();
+        auto& enabledModules = project.getEnabledModules();
+        PopupMenu allModules;
 
         int index = 100;
-        for (auto m : list.getIDs())
-            jucePathModules.addItem (index++, m, ! modules.isModuleEnabled (m));
 
-        knownModules.addSubMenu ("Global JUCE modules path", jucePathModules);
+        // JUCE path
+        PopupMenu jucePathModules;
 
-        list.scanGlobalUserModulePath();
+        for (auto& mod : ProjucerApplication::getApp().getJUCEPathModuleList().getAllModules())
+            jucePathModules.addItem (index++, mod.first, ! enabledModules.isModuleEnabled (mod.first));
 
+        jucePathModules.addSeparator();
+        jucePathModules.addItem (-1, "Re-scan path");
+
+        allModules.addSubMenu ("Global JUCE modules path", jucePathModules);
+
+        // User path
         index = 200;
-        for (auto m : list.getIDs())
-            userPathModules.addItem (index++, m, ! modules.isModuleEnabled (m));
+        PopupMenu userPathModules;
 
-        knownModules.addSubMenu ("Global user modules path", userPathModules);
+        for (auto& mod : ProjucerApplication::getApp().getUserPathsModuleList().getAllModules())
+            userPathModules.addItem (index++, mod.first, ! enabledModules.isModuleEnabled (mod.first));
 
-        list.scanProjectExporterModulePaths (project);
+        userPathModules.addSeparator();
+        userPathModules.addItem (-2, "Re-scan path");
 
+        allModules.addSubMenu ("Global user modules path", userPathModules);
+
+        // Exporter path
         index = 300;
-        for (auto m : list.getIDs())
-            exporterPathsModules.addItem (index++, m, ! modules.isModuleEnabled (m));
+        PopupMenu exporterPathModules;
 
-        knownModules.addSubMenu ("Exporter paths", exporterPathsModules);
+        for (auto& mod : project.getExporterPathsModuleList().getAllModules())
+            exporterPathModules.addItem (index++, mod.first, ! enabledModules.isModuleEnabled (mod.first));
+
+        exporterPathModules.addSeparator();
+        exporterPathModules.addItem (-3, "Re-scan path");
+
+        allModules.addSubMenu ("Exporter paths", exporterPathModules);
 
         PopupMenu menu;
-        menu.addSubMenu ("Add a module", knownModules);
+        menu.addSubMenu ("Add a module", allModules);
+
         menu.addSeparator();
         menu.addItem (1001, "Add a module from a specified folder...");
 
@@ -595,35 +602,39 @@ public:
 
     void handlePopupMenuResult (int resultCode) override
     {
-        auto& modules = project.getModules();
-
         if (resultCode == 1001)
         {
-            modules.addModuleFromUserSelectedFile();
+            project.getEnabledModules().addModuleFromUserSelectedFile();
+        }
+        else if (resultCode < 0)
+        {
+            if      (resultCode == -1)  ProjucerApplication::getApp().rescanJUCEPathModules();
+            else if (resultCode == -2)  ProjucerApplication::getApp().rescanUserPathModules();
+            else if (resultCode == -3)  project.rescanExporterPathModules();
         }
         else if (resultCode > 0)
         {
-            ModuleList list;
+            std::vector<ModuleIDAndFolder> list;
             int offset = -1;
 
             if (resultCode < 200)
             {
-                list.scanGlobalJuceModulePath();
+                list = ProjucerApplication::getApp().getJUCEPathModuleList().getAllModules();
                 offset = 100;
             }
             else if (resultCode < 300)
             {
-                list.scanGlobalUserModulePath();
+                list = ProjucerApplication::getApp().getUserPathsModuleList().getAllModules();
                 offset = 200;
             }
             else if (resultCode < 400)
             {
-                list.scanProjectExporterModulePaths (project);
+                list = project.getExporterPathsModuleList().getAllModules();
                 offset = 300;
             }
 
             if (offset != -1)
-                modules.addModuleInteractive (list.getIDs() [resultCode - offset]);
+                project.getEnabledModules().addModuleInteractive (list[(size_t) (resultCode - offset)].first);
         }
     }
 
@@ -641,7 +652,7 @@ public:
 private:
     Project& project;
     ValueTree moduleListTree;
-    Value projectCppStandardValue, defaultJuceModulePathValue, defaultUserModulePathValue;
+    Value projectCppStandardValue;
 
     //==============================================================================
     void valueChanged (Value& v) override
@@ -660,25 +671,26 @@ private:
                 }
             }
         }
-        else if (v == defaultJuceModulePathValue || v == defaultUserModulePathValue)
-        {
-            auto juceModulePathChanged = (v == defaultJuceModulePathValue);
-
-            for (int i = 0; i < getNumSubItems(); ++i)
-                if (auto* moduleItem = dynamic_cast<ModuleItem*> (getSubItem (i)))
-                    moduleItem->refreshModuleInfoIfCurrentlyShowing (juceModulePathChanged);
-
-            // coalesce changes using a timer in case the value is changing rapidly
-            startTimer (750);
-        }
     }
 
-    //==============================================================================
-    void timerCallback() override
+    void removeDuplicateModules()
     {
-        stopTimer();
+        auto jucePathModuleList = ProjucerApplication::getApp().getJUCEPathModuleList().getAllModules();
+
+        auto& userPathModules = ProjucerApplication::getApp().getUserPathsModuleList();
+        userPathModules.removeDuplicates (jucePathModuleList);
+
+        auto& exporterPathModules = project.getExporterPathsModuleList();
+        exporterPathModules.removeDuplicates (jucePathModuleList);
+        exporterPathModules.removeDuplicates (userPathModules.getAllModules());
+    }
+
+    void availableModulesChanged() override
+    {
+        removeDuplicateModules();
         refreshSubItems();
     }
 
+    //==============================================================================
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (EnabledModulesItem)
 };
diff --git a/extras/Projucer/Source/Project/UI/jucer_ModulesInformationComponent.h b/extras/Projucer/Source/Project/UI/jucer_ModulesInformationComponent.h
index 0578ba746a..17e357ec48 100644
--- a/extras/Projucer/Source/Project/UI/jucer_ModulesInformationComponent.h
+++ b/extras/Projucer/Source/Project/UI/jucer_ModulesInformationComponent.h
@@ -35,7 +35,7 @@ class ModulesInformationComponent  : public Component,
 public:
     ModulesInformationComponent (Project& p)
         : project (p),
-          modulesValueTree (p.getModules().state)
+          modulesValueTree (p.getEnabledModules().state)
     {
         listHeader = new ListBoxHeader ( { "Module", "Version", "Make Local Copy", "Paths" },
                                         { 0.25f, 0.2f, 0.2f, 0.35f } );
@@ -106,7 +106,7 @@ public:
 
     int getNumRows() override
     {
-        return project.getModules().getNumModules();
+        return project.getEnabledModules().getNumModules();
     }
 
     void paintListBoxItem (int rowNumber, Graphics& g, int width, int height, bool rowIsSelected) override
@@ -123,26 +123,26 @@ public:
         g.setColour (rowIsSelected ? findColour (defaultHighlightedTextColourId) : findColour (widgetTextColourId));
 
         //======================================================================
-        auto moduleID = project.getModules().getModuleID (rowNumber);
+        auto moduleID = project.getEnabledModules().getModuleID (rowNumber);
 
         g.drawFittedText (moduleID, bounds.removeFromLeft (roundToInt (listHeader->getProportionAtIndex (0) * width)), Justification::centredLeft, 1);
 
         //======================================================================
-        auto version = project.getModules().getModuleInfo (moduleID).getVersion();
+        auto version = project.getEnabledModules().getModuleInfo (moduleID).getVersion();
         if (version.isEmpty())
             version = "?";
 
         g.drawFittedText (version, bounds.removeFromLeft (roundToInt (listHeader->getProportionAtIndex (1) * width)), Justification::centredLeft, 1);
 
         //======================================================================
-        auto copyLocally = project.getModules().shouldCopyModuleFilesLocally (moduleID).getValue() ? "Yes" : "No";
+        auto copyLocally = project.getEnabledModules().shouldCopyModuleFilesLocally (moduleID).getValue() ? "Yes" : "No";
 
         g.drawFittedText (copyLocally, bounds.removeFromLeft (roundToInt (listHeader->getProportionAtIndex (2) * width)), Justification::centredLeft, 1);
 
         //======================================================================
         String pathText;
 
-        if (project.getModules().shouldUseGlobalPath (moduleID))
+        if (project.getEnabledModules().shouldUseGlobalPath (moduleID))
         {
             pathText = "Global";
         }
@@ -161,7 +161,7 @@ public:
 
     void listBoxItemDoubleClicked (int row, const MouseEvent&) override
     {
-        auto moduleID = project.getModules().getModuleID (row);
+        auto moduleID = project.getEnabledModules().getModuleID (row);
 
         if (moduleID.isNotEmpty())
             if (auto* pcc = findParentComponentOfClass<ProjectContentComponent>())
@@ -170,7 +170,7 @@ public:
 
     void deleteKeyPressed (int row) override
     {
-        project.getModules().removeModule (project.getModules().getModuleID (row));
+        project.getEnabledModules().removeModule (project.getEnabledModules().getModuleID (row));
     }
 
     void lookAndFeelChanged() override
@@ -224,7 +224,7 @@ private:
         auto res = m.showAt (&setCopyModeButton);
 
         if (res != 0)
-            project.getModules().setLocalCopyModeForAllModules (res == 1);
+            project.getEnabledModules().setLocalCopyModeForAllModules (res == 1);
     }
 
     void showGlobalPathsMenu()
@@ -243,7 +243,7 @@ private:
         {
             auto enableGlobalPaths = (res % 2 == 1);
 
-            auto& moduleList = project.getModules();
+            auto& moduleList = project.getEnabledModules();
 
             if (res < 3)
             {
@@ -271,7 +271,7 @@ private:
             pastePathsID
         };
 
-        auto& moduleList = project.getModules();
+        auto& moduleList = project.getEnabledModules();
         auto moduleToCopy = moduleList.getModuleID (list.getSelectedRow());
 
         if (moduleToCopy.isNotEmpty())
diff --git a/extras/Projucer/Source/Project/jucer_Module.cpp b/extras/Projucer/Source/Project/jucer_Module.cpp
index d0bffbb503..ae59add3d1 100644
--- a/extras/Projucer/Source/Project/jucer_Module.cpp
+++ b/extras/Projucer/Source/Project/jucer_Module.cpp
@@ -25,10 +25,9 @@
 */
 
 #include "../Application/jucer_Headers.h"
-#include "jucer_Module.h"
 #include "../ProjectSaving/jucer_ProjectSaver.h"
 #include "../ProjectSaving/jucer_ProjectExport_Xcode.h"
-#include "../Application/jucer_ProjucerAnalytics.h"
+#include "../Application/jucer_Application.h"
 
 //==============================================================================
 static var parseModuleDesc (const StringArray& lines)
@@ -113,195 +112,154 @@ StringArray ModuleDescription::getDependencies() const
 }
 
 //==============================================================================
-ModuleList::ModuleList()
-{
-}
-
-ModuleList::ModuleList (const ModuleList& other)
-{
-    operator= (other);
-}
-
-ModuleList& ModuleList::operator= (const ModuleList& other)
-{
-    modules.clear();
-    modules.addCopiesOf (other.modules);
-    return *this;
-}
-
-const ModuleDescription* ModuleList::getModuleWithID (const String& moduleID) const
-{
-    for (auto* m : modules)
-        if (m->getID() == moduleID)
-            return m;
-
-    return nullptr;
-}
-
-void ModuleList::sort()
-{
-    std::sort (modules.begin(), modules.end(), [] (const ModuleDescription* m1, const ModuleDescription* m2)
-    {
-        return m1->getID().compareIgnoreCase (m2->getID()) < 0;
-    });
-}
-
-StringArray ModuleList::getIDs() const
-{
-    StringArray results;
-
-    for (auto* m : modules)
-        results.add (m->getID());
-
-    results.sort (true);
-    return results;
-}
-
-bool ModuleList::tryToAddModuleFromFolder (const File& path)
+static bool tryToAddModuleFromFolder (const File& path, ModuleIDAndFolderList& list)
 {
     ModuleDescription m (path);
 
     if (m.isValid())
     {
-        getPreviousModuleDirectories().addIfNotAlreadyThere (path.getParentDirectory());
-        modules.add (new ModuleDescription (m));
+        list.push_back ({ m.getID(), path });
         return true;
     }
 
     return false;
 }
 
-void ModuleList::addAllModulesInFolder (const File& path)
+static bool addAllModulesInSubfoldersRecursively (const File& path, int depth, ModuleIDAndFolderList& list)
 {
-    if (! tryToAddModuleFromFolder (path))
+    if (depth > 0)
     {
         for (DirectoryIterator iter (path, false, "*", File::findDirectories); iter.next();)
-            tryToAddModuleFromFolder (iter.getFile().getLinkedTarget());
+        {
+            if (auto* job = ThreadPoolJob::getCurrentThreadPoolJob())
+                if (job->shouldExit())
+                    return false;
+
+            auto childPath = iter.getFile().getLinkedTarget();
+
+            if (! tryToAddModuleFromFolder (childPath, list))
+                if (! addAllModulesInSubfoldersRecursively (childPath, depth - 1, list))
+                    return false;
+        }
     }
+
+    return true;
 }
 
-Array<File>& ModuleList::getPreviousModuleDirectories()
+static bool addAllModulesInFolder (const File& path, ModuleIDAndFolderList& list)
 {
-    static Array<File> previous;
-    return previous;
-}
+    bool exitedBeforeCompletion = false;
 
-File ModuleList::tryToFindModulePathFromPrevious (const String& id)
-{
-    for (auto& f : getPreviousModuleDirectories())
+    if (! tryToAddModuleFromFolder (path, list))
     {
-        auto modulePath = f.getChildFile (id);
-        if (ModuleDescription (modulePath).isValid())
-            return modulePath;
+        int subfolders = 3;
+        exitedBeforeCompletion = addAllModulesInSubfoldersRecursively (path, subfolders, list);
     }
 
-    return {};
+    return exitedBeforeCompletion;
+}
+
+static void sort (ModuleIDAndFolderList& listToSort)
+{
+    std::sort (listToSort.begin(), listToSort.end(), [] (const ModuleIDAndFolder& m1, const ModuleIDAndFolder& m2)
+                                                     {
+                                                         return m1.first.compareIgnoreCase (m2.first) < 0;
+                                                     });
 }
 
 //==============================================================================
-static File getModuleFolderFromPathIfItExists (const String& path, const String& moduleID)
+struct ModuleScannerJob    : public ThreadPoolJob
 {
-    if (path.isNotEmpty())
+    ModuleScannerJob (const Array<File>& paths, std::function<void (const ModuleIDAndFolderList&)>&& callback)
+        : ThreadPoolJob ("ModuleScannerJob"),
+          pathsToScan (paths),
+          completionCallback (std::move (callback))
     {
-        ModuleList list;
-        list.addAllModulesInFolder (path);
-
-        if (auto* desc = list.getModuleWithID (moduleID))
-            return desc->getFolder();
     }
 
+    JobStatus runJob() override
+    {
+        ModuleIDAndFolderList list;
+
+        for (auto& p : pathsToScan)
+            if (! addAllModulesInFolder (p, list))
+                return jobNeedsRunningAgain;
+
+        sort (list);
+        completionCallback (list);
+
+        return jobHasFinished;
+    }
+
+    Array<File> pathsToScan;
+    std::function<void (const ModuleIDAndFolderList&)> completionCallback;
+};
+
+AvailableModuleList::AvailableModuleList()
+{
+}
+
+ThreadPoolJob* AvailableModuleList::createScannerJob (const Array<File>& paths)
+{
+    return new ModuleScannerJob (paths, [this] (ModuleIDAndFolderList scannedModuleList)
+                                        {
+                                             {
+                                                 const ScopedLock swapLock (lock);
+                                                 moduleList.swap (scannedModuleList);
+                                             }
+
+                                            MessageManager::callAsync ([this] { listeners.call ([] (Listener& l) { l.availableModulesChanged(); }); });
+                                        });
+}
+
+void AvailableModuleList::removePendingAndAddJob (ThreadPoolJob* jobToAdd)
+{
+    scanPool.removeAllJobs (false, 100);
+    scanPool.addJob (jobToAdd, true);
+}
+
+void AvailableModuleList::scanPaths (const Array<File>& paths)
+{
+    auto* job = createScannerJob (paths);
+
+    removePendingAndAddJob (job);
+    scanPool.waitForJobToFinish (job, -1);
+}
+
+void AvailableModuleList::scanPathsAsync (const Array<File>& paths)
+{
+    removePendingAndAddJob (createScannerJob (paths));
+}
+
+ModuleIDAndFolderList AvailableModuleList::getAllModules() const
+{
+    const ScopedLock readLock (lock);
+
+    return moduleList;
+}
+
+ModuleIDAndFolder AvailableModuleList::getModuleWithID (const String& id) const
+{
+    const ScopedLock readLock (lock);
+
+    for (auto& mod : moduleList)
+        if (mod.first == id)
+            return mod;
+
     return {};
 }
 
-static Array<File> getAllPossibleModulePathsFromExporters (Project& project, bool onlyThisOS)
+void AvailableModuleList::removeDuplicates (const ModuleIDAndFolderList& other)
 {
-    StringArray paths;
+    const ScopedLock readLock (lock);
 
-    for (Project::ExporterIterator exporter (project); exporter.next();)
+    for (auto& m : other)
     {
-        if (onlyThisOS && ! exporter->mayCompileOnCurrentOS())
-            continue;
+        auto pos = std::find (moduleList.begin(), moduleList.end(), m);
 
-        auto& modules = project.getModules();
-        auto n = modules.getNumModules();
-
-        for (int i = 0; i < n; ++i)
-        {
-            auto id = modules.getModuleID (i);
-
-            if (modules.shouldUseGlobalPath (id))
-                continue;
-
-            auto path = exporter->getPathForModuleString (id);
-
-            if (path.isNotEmpty())
-                paths.addIfNotAlreadyThere (path);
-        }
-
-        auto oldPath = exporter->getLegacyModulePath();
-
-        if (oldPath.isNotEmpty())
-            paths.addIfNotAlreadyThere (oldPath);
+        if (pos != moduleList.end())
+            moduleList.erase (pos);
     }
-
-    Array<File> files;
-
-    for (auto& path : paths)
-    {
-        auto f = project.resolveFilename (path);
-
-        if (f.isDirectory())
-        {
-            files.addIfNotAlreadyThere (f);
-
-            if (f.getChildFile ("modules").isDirectory())
-                files.addIfNotAlreadyThere (f.getChildFile ("modules"));
-        }
-    }
-
-    return files;
-}
-
-void ModuleList::scanProjectExporterModulePaths (Project& project)
-{
-    modules.clear();
-
-    for (auto& m : getAllPossibleModulePathsFromExporters (project, false))
-        addAllModulesInFolder (m);
-
-    sort();
-}
-
-void ModuleList::scanGlobalJuceModulePath()
-{
-    modules.clear();
-
-    auto& settings = getAppSettings();
-
-    auto path = settings.getStoredPath (Ids::defaultJuceModulePath).toString();
-
-    if (path.isNotEmpty())
-        addAllModulesInFolder ({ path });
-
-    sort();
-}
-
-void ModuleList::scanGlobalUserModulePath()
-{
-    modules.clear();
-
-    auto paths = StringArray::fromTokens (getAppSettings().getStoredPath (Ids::defaultUserModulePath).toString(), ";", {});
-
-    for (auto p : paths)
-    {
-        p = p.replace ("~", File::getSpecialLocation (File::userHomeDirectory).getFullPathName());
-
-        auto f = File::createFileWithoutCheckingPath (p.trim());
-        if (f.exists())
-            addAllModulesInFolder (f);
-    }
-
-    sort();
 }
 
 //==============================================================================
@@ -314,7 +272,7 @@ LibraryModule::LibraryModule (const ModuleDescription& d)
 void LibraryModule::writeIncludes (ProjectSaver& projectSaver, OutputStream& out)
 {
     auto& project = projectSaver.project;
-    auto& modules = project.getModules();
+    auto& modules = project.getEnabledModules();
 
     auto id = getID();
 
@@ -382,7 +340,7 @@ void LibraryModule::addSettingsForModuleToExporter (ProjectExporter& exporter, P
 
     {
         Array<File> compiled;
-        auto& modules = project.getModules();
+        auto& modules = project.getEnabledModules();
         auto id = getID();
 
         auto localModuleFolder = modules.shouldCopyModuleFilesLocally (id).getValue() ? project.getLocalModuleFolder (id)
@@ -649,7 +607,7 @@ EnabledModuleList::EnabledModuleList (Project& p, const ValueTree& s)
 
 ModuleDescription EnabledModuleList::getModuleInfo (const String& moduleID)
 {
-    return ModuleDescription (findFolderForModule (moduleID));
+    return ModuleDescription (project.getModuleWithID (moduleID).second);
 }
 
 bool EnabledModuleList::isModuleEnabled (const String& moduleID) const
@@ -681,48 +639,6 @@ Value EnabledModuleList::shouldShowAllModuleFilesInProject (const String& module
                 .getPropertyAsValue (Ids::showAllCode, getUndoManager());
 }
 
-File EnabledModuleList::findFolderForModule (const String& moduleID)
-{
-    if (shouldUseGlobalPath (moduleID))
-    {
-        if (isJUCEModule (moduleID))
-            return File (getAppSettings().getStoredPath (Ids::defaultJuceModulePath).toString()).getChildFile (moduleID);
-
-        {
-            auto previous = ModuleList::tryToFindModulePathFromPrevious (moduleID);
-
-            if (previous != File())
-                return previous;
-        }
-
-        ModuleList list;
-        list.scanGlobalUserModulePath();
-
-        if (auto* desc = list.getModuleWithID (moduleID))
-            return desc->getFolder();
-    }
-    else
-    {
-        for (auto p : getAllPossibleModulePathsFromExporters (project, true))
-        {
-            auto f = getModuleFolderFromPathIfItExists (p.getFullPathName(), moduleID);
-
-            if (f != File())
-                return f;
-        }
-
-        for (auto p : getAllPossibleModulePathsFromExporters (project, false))
-        {
-            auto f = getModuleFolderFromPathIfItExists (p.getFullPathName(), moduleID);
-
-            if (f != File())
-                return f;
-        }
-    }
-
-    return {};
-}
-
 struct ModuleTreeSorter
 {
     static int compareElements (const ValueTree& m1, const ValueTree& m2)
@@ -754,7 +670,7 @@ void EnabledModuleList::addModule (const File& moduleFolder, bool copyLocally, b
         if (! isModuleEnabled (moduleID))
         {
             ValueTree module (Ids::MODULE);
-            module.setProperty (Ids::ID, moduleID, nullptr);
+            module.setProperty (Ids::ID, moduleID, getUndoManager());
 
             state.appendChild (module, getUndoManager());
             sortAlphabetically();
@@ -769,6 +685,9 @@ void EnabledModuleList::addModule (const File& moduleFolder, bool copyLocally, b
             for (Project::ExporterIterator exporter (project); exporter.next();)
                 exporter->getPathForModuleValue (moduleID) = path.toUnixStyle();
 
+            if (! useGlobalPath)
+                project.rescanExporterPathModules (false);
+
             if (sendAnalyticsEvent)
             {
                 StringPairArray data;
@@ -808,7 +727,7 @@ StringArray EnabledModuleList::getAllModules() const
 
 static void getDependencies (Project& project, const String& moduleID, StringArray& dependencies)
 {
-    auto info = project.getModules().getModuleInfo (moduleID);
+    auto info = project.getEnabledModules().getModuleInfo (moduleID);
 
     for (auto uid : info.getDependencies())
     {
@@ -877,7 +796,7 @@ bool EnabledModuleList::areMostModulesCopiedLocally() const
 void EnabledModuleList::setLocalCopyModeForAllModules (bool copyLocally)
 {
     for (auto i = getNumModules(); --i >= 0;)
-        shouldCopyModuleFilesLocally (project.getModules().getModuleID (i)) = copyLocally;
+        shouldCopyModuleFilesLocally (project.getEnabledModules().getModuleID (i)) = copyLocally;
 }
 
 File EnabledModuleList::findDefaultModulesFolder (Project& project)
@@ -887,12 +806,9 @@ File EnabledModuleList::findDefaultModulesFolder (Project& project)
     if (globalPath != File())
         return globalPath;
 
-    ModuleList available;
-    available.scanProjectExporterModulePaths (project);
-
-    for (auto i = available.modules.size(); --i >= 0;)
+    for (auto& exporterPathModule : project.getExporterPathsModuleList().getAllModules())
     {
-        auto f = available.modules.getUnchecked(i)->getFolder();
+        auto f = exporterPathModule.second;
 
         if (f.isDirectory())
             return f.getParentDirectory();
@@ -916,27 +832,15 @@ void EnabledModuleList::addModuleFromUserSelectedFile()
 
 void EnabledModuleList::addModuleInteractive (const String& moduleID)
 {
-    ModuleList list;
+    auto f = project.getModuleWithID (moduleID).second;
 
-    list.scanGlobalJuceModulePath();
-    if (auto* info = list.getModuleWithID (moduleID))
+    if (f != File())
     {
-        addModule (info->moduleFolder, areMostModulesCopiedLocally(), areMostModulesUsingGlobalPath(), true);
+        addModule (f, areMostModulesCopiedLocally(), areMostModulesUsingGlobalPath(), true);
         return;
     }
 
-    list.scanGlobalUserModulePath();
-    if (auto* info = list.getModuleWithID (moduleID))
-    {
-        addModule (info->moduleFolder, areMostModulesCopiedLocally(), areMostModulesUsingGlobalPath(), true);
-        return;
-    }
-
-    list.scanProjectExporterModulePaths (project);
-    if (auto* info = list.getModuleWithID (moduleID))
-        addModule (info->moduleFolder, areMostModulesCopiedLocally(), false, true);
-    else
-        addModuleFromUserSelectedFile();
+    addModuleFromUserSelectedFile();
 }
 
 void EnabledModuleList::addModuleOfferingToCopy (const File& f, bool isFromUserSpecifiedFolder)
diff --git a/extras/Projucer/Source/Project/jucer_Module.h b/extras/Projucer/Source/Project/jucer_Module.h
index c798d20f84..ba216b335a 100644
--- a/extras/Projucer/Source/Project/jucer_Module.h
+++ b/extras/Projucer/Source/Project/jucer_Module.h
@@ -64,31 +64,6 @@ struct ModuleDescription
     URL url;
 };
 
-//==============================================================================
-struct ModuleList
-{
-    ModuleList();
-    ModuleList (const ModuleList&);
-    ModuleList& operator= (const ModuleList&);
-
-    const ModuleDescription* getModuleWithID (const String& moduleID) const;
-    StringArray getIDs() const;
-    void sort();
-
-    bool tryToAddModuleFromFolder (const File&);
-
-    void addAllModulesInFolder (const File&);
-
-    static Array<File>& getPreviousModuleDirectories();
-    static File tryToFindModulePathFromPrevious (const String&);
-
-    void scanProjectExporterModulePaths (Project&);
-    void scanGlobalJuceModulePath();
-    void scanGlobalUserModulePath();
-
-    OwnedArray<ModuleDescription> modules;
-};
-
 //==============================================================================
 class LibraryModule
 {
@@ -135,6 +110,47 @@ private:
     void addBrowseableCode (ProjectExporter&, const Array<File>& compiled, const File& localModuleFolder) const;
 };
 
+//==============================================================================
+using ModuleIDAndFolder     = std::pair<String, File>;
+using ModuleIDAndFolderList = std::vector<ModuleIDAndFolder>;
+
+class AvailableModuleList
+{
+public:
+    AvailableModuleList();
+
+    void scanPaths      (const Array<File>&);
+    void scanPathsAsync (const Array<File>&);
+
+    ModuleIDAndFolderList getAllModules() const;
+    ModuleIDAndFolder getModuleWithID (const String&) const;
+
+    void removeDuplicates (const ModuleIDAndFolderList& other);
+
+    //==============================================================================
+    struct Listener
+    {
+        virtual ~Listener() {}
+
+        virtual void availableModulesChanged() = 0;
+    };
+
+    void addListener (Listener* listenerToAdd)          { listeners.add (listenerToAdd); }
+    void removeListener (Listener* listenerToRemove)    { listeners.remove (listenerToRemove); }
+
+private:
+    ThreadPoolJob* createScannerJob (const Array<File>&);
+    void removePendingAndAddJob (ThreadPoolJob*);
+
+    ThreadPool scanPool { 1 };
+
+    ModuleIDAndFolderList moduleList;
+    ListenerList<Listener> listeners;
+    CriticalSection lock;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AvailableModuleList)
+};
+
 //==============================================================================
 class EnabledModuleList
 {
@@ -182,7 +198,5 @@ public:
 private:
     UndoManager* getUndoManager() const     { return project.getUndoManagerFor (state); }
 
-    File findFolderForModule (const String& moduleID);
-
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (EnabledModuleList)
 };
diff --git a/extras/Projucer/Source/Project/jucer_Project.cpp b/extras/Projucer/Source/Project/jucer_Project.cpp
index 6414d12c8d..9e0363ec72 100644
--- a/extras/Projucer/Source/Project/jucer_Project.cpp
+++ b/extras/Projucer/Source/Project/jucer_Project.cpp
@@ -64,7 +64,7 @@ Project::Project (const File& f)
 
     parsedPreprocessorDefs = parsePreprocessorDefs (preprocessorDefsValue.get());
 
-    getModules().sortAlphabetically();
+    getEnabledModules().sortAlphabetically();
 
     projectRoot.addListener (this);
 
@@ -488,45 +488,33 @@ static int getBuiltJuceVersion()
          + JUCE_BUILDNUMBER;
 }
 
-static bool isAnyModuleNewerThanProjucer (const OwnedArray<ModuleDescription>& modules)
+static bool isModuleNewerThanProjucer (const ModuleDescription& module)
 {
-    for (auto i = modules.size(); --i >= 0;)
-    {
-        auto* m = modules.getUnchecked(i);
-
-        if (m->getID().startsWith ("juce_")
-              && getJuceVersion (m->getVersion()) > getBuiltJuceVersion())
-            return true;
-    }
+    if (module.getID().startsWith ("juce_")
+        && getJuceVersion (module.getVersion()) > getBuiltJuceVersion())
+        return true;
 
     return false;
 }
 
 void Project::warnAboutOldProjucerVersion()
 {
-    ModuleList available;
-
-    available.scanGlobalJuceModulePath();
-
-    if (! isAnyModuleNewerThanProjucer (available.modules))
-        available.scanGlobalUserModulePath();
-
-    if (! isAnyModuleNewerThanProjucer (available.modules))
-        available.scanProjectExporterModulePaths (*this);
-
-    if (! isAnyModuleNewerThanProjucer (available.modules))
-        return;
-
-    // Projucer is out of date!
-    if (ProjucerApplication::getApp().isRunningCommandLine)
-        std::cout <<  "WARNING! This version of the Projucer is out-of-date!" << std::endl;
-    else
-        AlertWindow::showMessageBoxAsync (AlertWindow::WarningIcon,
-                                          "Projucer",
-                                          "This version of the Projucer is out-of-date!"
-                                          "\n\n"
-                                          "Always make sure that you're running the very latest version, "
-                                          "preferably compiled directly from the JUCE repository that you're working with!");
+    for (auto& juceModule : ProjucerApplication::getApp().getJUCEPathModuleList().getAllModules())
+    {
+        if (isModuleNewerThanProjucer ({ juceModule.second }))
+        {
+            // Projucer is out of date!
+            if (ProjucerApplication::getApp().isRunningCommandLine)
+                std::cout <<  "WARNING! This version of the Projucer is out-of-date!" << std::endl;
+            else
+                AlertWindow::showMessageBoxAsync (AlertWindow::WarningIcon,
+                                                  "Projucer",
+                                                  "This version of the Projucer is out-of-date!"
+                                                  "\n\n"
+                                                  "Always make sure that you're running the very latest version, "
+                                                  "preferably compiled directly from the JUCE repository that you're working with!");
+        }
+    }
 }
 
 //==============================================================================
@@ -564,7 +552,7 @@ Result Project::loadDocument (const File& file)
 
     registerRecentFile (file);
 
-    enabledModulesList.reset();
+    enabledModuleList.reset();
     projectRoot = newTree;
 
     initialiseProjectValues();
@@ -586,6 +574,9 @@ Result Project::loadDocument (const File& file)
 
     compileEngineSettings.reset (new CompileEngineSettings (projectRoot));
 
+    exporterPathsModuleList.reset (new AvailableModuleList());
+    rescanExporterPathModules (! ProjucerApplication::getApp().isRunningCommandLine);
+
     return Result::ok();
 }
 
@@ -1744,17 +1735,17 @@ String Project::getIAAPluginName()
 //==============================================================================
 bool Project::isAUPluginHost()
 {
-    return getModules().isModuleEnabled ("juce_audio_processors") && isConfigFlagEnabled ("JUCE_PLUGINHOST_AU");
+    return getEnabledModules().isModuleEnabled ("juce_audio_processors") && isConfigFlagEnabled ("JUCE_PLUGINHOST_AU");
 }
 
 bool Project::isVSTPluginHost()
 {
-    return getModules().isModuleEnabled ("juce_audio_processors") && isConfigFlagEnabled ("JUCE_PLUGINHOST_VST");
+    return getEnabledModules().isModuleEnabled ("juce_audio_processors") && isConfigFlagEnabled ("JUCE_PLUGINHOST_VST");
 }
 
 bool Project::isVST3PluginHost()
 {
-    return getModules().isModuleEnabled ("juce_audio_processors") && isConfigFlagEnabled ("JUCE_PLUGINHOST_VST3");
+    return getEnabledModules().isModuleEnabled ("juce_audio_processors") && isConfigFlagEnabled ("JUCE_PLUGINHOST_VST3");
 }
 
 //==============================================================================
@@ -1875,12 +1866,83 @@ Array<var> Project::getDefaultRTASCategories() const noexcept
 }
 
 //==============================================================================
-EnabledModuleList& Project::getModules()
+EnabledModuleList& Project::getEnabledModules()
 {
-    if (enabledModulesList == nullptr)
-        enabledModulesList.reset (new EnabledModuleList (*this, projectRoot.getOrCreateChildWithName (Ids::MODULES, nullptr)));
+    if (enabledModuleList == nullptr)
+        enabledModuleList.reset (new EnabledModuleList (*this, projectRoot.getOrCreateChildWithName (Ids::MODULES, nullptr)));
 
-    return *enabledModulesList;
+    return *enabledModuleList;
+}
+
+static Array<File> getAllPossibleModulePathsFromExporters (Project& project)
+{
+    StringArray paths;
+
+    for (Project::ExporterIterator exporter (project); exporter.next();)
+    {
+        auto& modules = project.getEnabledModules();
+        auto n = modules.getNumModules();
+
+        for (int i = 0; i < n; ++i)
+        {
+            auto id = modules.getModuleID (i);
+
+            if (modules.shouldUseGlobalPath (id))
+                continue;
+
+            auto path = exporter->getPathForModuleString (id);
+
+            if (path.isNotEmpty())
+                paths.addIfNotAlreadyThere (path);
+        }
+
+        auto oldPath = exporter->getLegacyModulePath();
+
+        if (oldPath.isNotEmpty())
+            paths.addIfNotAlreadyThere (oldPath);
+    }
+
+    Array<File> files;
+
+    for (auto& path : paths)
+    {
+        auto f = project.resolveFilename (path);
+
+        if (f.isDirectory())
+        {
+            files.addIfNotAlreadyThere (f);
+
+            if (f.getChildFile ("modules").isDirectory())
+                files.addIfNotAlreadyThere (f.getChildFile ("modules"));
+        }
+    }
+
+    return files;
+}
+
+AvailableModuleList& Project::getExporterPathsModuleList()
+{
+    return *exporterPathsModuleList;
+}
+
+void Project::rescanExporterPathModules (bool async)
+{
+    if (async)
+        exporterPathsModuleList->scanPathsAsync (getAllPossibleModulePathsFromExporters (*this));
+    else
+        exporterPathsModuleList->scanPaths (getAllPossibleModulePathsFromExporters (*this));
+}
+
+ModuleIDAndFolder Project::getModuleWithID (const String& id)
+{
+    const auto& list = (isJUCEModule (id) ? ProjucerApplication::getApp().getJUCEPathModuleList().getAllModules()
+                                          : ProjucerApplication::getApp().getUserPathsModuleList().getAllModules());
+
+    for (auto& m : list)
+        if (m.first == id)
+            return m;
+
+    return exporterPathsModuleList->getModuleWithID (id);
 }
 
 //==============================================================================
diff --git a/extras/Projucer/Source/Project/jucer_Project.h b/extras/Projucer/Source/Project/jucer_Project.h
index 529497bc87..9e4303c694 100644
--- a/extras/Projucer/Source/Project/jucer_Project.h
+++ b/extras/Projucer/Source/Project/jucer_Project.h
@@ -31,6 +31,7 @@
 class ProjectExporter;
 class LibraryModule;
 class EnabledModuleList;
+class AvailableModuleList;
 class ProjectContentComponent;
 class CompileEngineSettings;
 
@@ -351,7 +352,12 @@ public:
     bool isConfigFlagEnabled (const String& name, bool defaultIsEnabled = false) const;
 
     //==============================================================================
-    EnabledModuleList& getModules();
+    EnabledModuleList& getEnabledModules();
+
+    AvailableModuleList& getExporterPathsModuleList();
+    void rescanExporterPathModules (bool async = false);
+
+    std::pair<String, File> getModuleWithID (const String&);
 
     //==============================================================================
     String getFileTemplate (const String& templateName);
@@ -412,6 +418,8 @@ private:
 
     //==============================================================================
     std::unique_ptr<CompileEngineSettings> compileEngineSettings;
+    std::unique_ptr<EnabledModuleList> enabledModuleList;
+    std::unique_ptr<AvailableModuleList> exporterPathsModuleList;
 
     //==============================================================================
     bool shouldWriteLegacyPluginFormatSettings = false;
@@ -440,7 +448,6 @@ private:
 
     //==============================================================================
     friend class Item;
-    std::unique_ptr<EnabledModuleList> enabledModulesList;
     bool isSaving = false;
     Time modificationTime;
     StringPairArray parsedPreprocessorDefs;
diff --git a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Android.h b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Android.h
index 161d5da623..cb1bb7e43e 100644
--- a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Android.h
+++ b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Android.h
@@ -1788,7 +1788,7 @@ private:
 
     void createOpenGlFeatureElement (XmlElement& manifest) const
     {
-        if (project.getModules().isModuleEnabled ("juce_opengl"))
+        if (project.getEnabledModules().isModuleEnabled ("juce_opengl"))
         {
             XmlElement* glVersion = nullptr;
 
diff --git a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_CodeBlocks.h b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_CodeBlocks.h
index d8295d0b21..7e8dcd2684 100644
--- a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_CodeBlocks.h
+++ b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_CodeBlocks.h
@@ -312,7 +312,7 @@ private:
 
         static String guiExtrasModule ("juce_gui_extra");
 
-        if (project.getModules().isModuleEnabled (guiExtrasModule)
+        if (project.getEnabledModules().isModuleEnabled (guiExtrasModule)
             && project.isConfigFlagEnabled ("JUCE_WEB_BROWSER", true))
         {
             result.add ("webkit2gtk-4.0");
diff --git a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Make.h b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Make.h
index 0a01e7c7f3..e86d58141b 100644
--- a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Make.h
+++ b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Make.h
@@ -608,7 +608,7 @@ private:
     {
         static String guiExtrasModule ("juce_gui_extra");
 
-        return (project.getModules().isModuleEnabled (guiExtrasModule)
+        return (project.getEnabledModules().isModuleEnabled (guiExtrasModule)
                 && project.isConfigFlagEnabled ("JUCE_WEB_BROWSER", true));
     }
 
@@ -616,7 +616,7 @@ private:
     {
         static String juceCoreModule ("juce_core");
 
-        return (project.getModules().isModuleEnabled (juceCoreModule)
+        return (project.getEnabledModules().isModuleEnabled (juceCoreModule)
                 && project.isConfigFlagEnabled ("JUCE_LOAD_CURL_SYMBOLS_LAZILY", false));
     }
 
diff --git a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Xcode.h b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Xcode.h
index 3b21ed2845..f3e37834d3 100644
--- a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Xcode.h
+++ b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Xcode.h
@@ -1506,7 +1506,7 @@ public:
             paths.addArray (config.getHeaderSearchPaths());
             paths.addArray (getTargetExtraHeaderSearchPaths());
 
-            if (owner.project.getModules().isModuleEnabled ("juce_audio_plugin_client"))
+            if (owner.project.getEnabledModules().isModuleEnabled ("juce_audio_plugin_client"))
             {
                 // Needed to compile .r files
                 paths.add (owner.getModuleFolderRelativeToProject ("juce_audio_plugin_client")
diff --git a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExporter.cpp b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExporter.cpp
index cbc216c34d..485b81f803 100644
--- a/extras/Projucer/Source/ProjectSaving/jucer_ProjectExporter.cpp
+++ b/extras/Projucer/Source/ProjectSaving/jucer_ProjectExporter.cpp
@@ -544,7 +544,7 @@ String ProjectExporter::getPathForModuleString (const String& moduleID) const
     auto exporterPath = settings.getChildWithName (Ids::MODULEPATHS)
                                 .getChildWithProperty (Ids::ID, moduleID) [Ids::path].toString();
 
-    if (exporterPath.isEmpty() || project.getModules().shouldUseGlobalPath (moduleID))
+    if (exporterPath.isEmpty() || project.getEnabledModules().shouldUseGlobalPath (moduleID))
     {
         auto id = isJUCEModule (moduleID) ? Ids::defaultJuceModulePath
                                           : Ids::defaultUserModulePath;
@@ -573,17 +573,17 @@ TargetOS::OS ProjectExporter::getTargetOSForExporter() const
 {
     auto targetOS = TargetOS::unknown;
 
-    if      (isWindows())            targetOS = TargetOS::windows;
-    else if (isOSX() || isiOS())     targetOS = TargetOS::osx;
-    else if (isLinux())              targetOS = TargetOS::linux;
-    else if (isAndroid())            targetOS = TargetOS::getThisOS();
+    if      (isWindows())                 targetOS = TargetOS::windows;
+    else if (isOSX() || isiOS())          targetOS = TargetOS::osx;
+    else if (isLinux())                   targetOS = TargetOS::linux;
+    else if (isAndroid() || isCLion())    targetOS = TargetOS::getThisOS();
 
     return targetOS;
 }
 
 RelativePath ProjectExporter::getModuleFolderRelativeToProject (const String& moduleID) const
 {
-    if (project.getModules().shouldCopyModuleFilesLocally (moduleID).getValue())
+    if (project.getEnabledModules().shouldCopyModuleFilesLocally (moduleID).getValue())
         return RelativePath (project.getRelativePathForFile (project.getLocalModuleFolder (moduleID)),
                              RelativePath::projectFolder);
 
@@ -602,7 +602,7 @@ String ProjectExporter::getLegacyModulePath() const
 
 RelativePath ProjectExporter::getLegacyModulePath (const String& moduleID) const
 {
-    if (project.getModules().state.getChildWithProperty (Ids::ID, moduleID) ["useLocalCopy"])
+    if (project.getEnabledModules().state.getChildWithProperty (Ids::ID, moduleID) ["useLocalCopy"])
         return RelativePath (project.getRelativePathForFile (project.getGeneratedCodeFolder()
                                                                 .getChildFile ("modules")
                                                                 .getChildFile (moduleID)), RelativePath::projectFolder);
@@ -625,9 +625,9 @@ void ProjectExporter::updateOldModulePaths()
 
     if (oldPath.isNotEmpty())
     {
-        for (int i = project.getModules().getNumModules(); --i >= 0;)
+        for (int i = project.getEnabledModules().getNumModules(); --i >= 0;)
         {
-            auto modID = project.getModules().getModuleID(i);
+            auto modID = project.getEnabledModules().getModuleID(i);
             getPathForModuleValue (modID) = getLegacyModulePath (modID).getParentDirectory().toUnixStyle();
         }
 
@@ -650,9 +650,9 @@ void ProjectExporter::createDefaultModulePaths()
     {
         if (areCompatibleExporters (*this, *exporter))
         {
-            for (int i = project.getModules().getNumModules(); --i >= 0;)
+            for (int i = project.getEnabledModules().getNumModules(); --i >= 0;)
             {
-                auto modID = project.getModules().getModuleID (i);
+                auto modID = project.getEnabledModules().getModuleID (i);
                 getPathForModuleValue (modID) = exporter->getPathForModuleValue (modID).getValue();
             }
 
@@ -664,9 +664,9 @@ void ProjectExporter::createDefaultModulePaths()
     {
         if (exporter->canLaunchProject())
         {
-            for (int i = project.getModules().getNumModules(); --i >= 0;)
+            for (int i = project.getEnabledModules().getNumModules(); --i >= 0;)
             {
-                auto modID = project.getModules().getModuleID (i);
+                auto modID = project.getEnabledModules().getModuleID (i);
                 getPathForModuleValue (modID) = exporter->getPathForModuleValue (modID).getValue();
             }
 
@@ -674,9 +674,9 @@ void ProjectExporter::createDefaultModulePaths()
         }
     }
 
-    for (int i = project.getModules().getNumModules(); --i >= 0;)
+    for (int i = project.getEnabledModules().getNumModules(); --i >= 0;)
     {
-        auto modID = project.getModules().getModuleID (i);
+        auto modID = project.getEnabledModules().getModuleID (i);
         getPathForModuleValue (modID) = "../../juce";
     }
 }
diff --git a/extras/Projucer/Source/ProjectSaving/jucer_ProjectSaver.h b/extras/Projucer/Source/ProjectSaving/jucer_ProjectSaver.h
index 42f711cd64..5b500966ca 100644
--- a/extras/Projucer/Source/ProjectSaving/jucer_ProjectSaver.h
+++ b/extras/Projucer/Source/ProjectSaving/jucer_ProjectSaver.h
@@ -82,7 +82,7 @@ public:
         project.setFile (projectFile);
 
         OwnedArray<LibraryModule> modules;
-        project.getModules().createRequiredModules (modules);
+        project.getEnabledModules().createRequiredModules (modules);
 
         checkModuleValidity (modules);
 
@@ -148,7 +148,7 @@ public:
     Result saveContentNeededForLiveBuild()
     {
         OwnedArray<LibraryModule> modules;
-        project.getModules().createRequiredModules (modules);
+        project.getEnabledModules().createRequiredModules (modules);
 
         checkModuleValidity (modules);
 
@@ -390,7 +390,7 @@ private:
                     return;
                 }
 
-                if (project.getModules().getExtraDependenciesNeeded (module->getID()).size() > 0)
+                if (project.getEnabledModules().getExtraDependenciesNeeded (module->getID()).size() > 0)
                 {
                     addError ("At least one of your modules has missing dependencies!\n"
                               "Please go to the settings page of the highlighted modules and add the required dependencies.");
diff --git a/extras/Projucer/Source/Utility/Helpers/jucer_TranslationHelpers.h b/extras/Projucer/Source/Utility/Helpers/jucer_TranslationHelpers.h
index fd4ce588ec..fa2524b8b6 100644
--- a/extras/Projucer/Source/Utility/Helpers/jucer_TranslationHelpers.h
+++ b/extras/Projucer/Source/Utility/Helpers/jucer_TranslationHelpers.h
@@ -183,7 +183,7 @@ struct TranslationHelpers
         scanFilesForTranslations (strings, project.getMainGroup());
 
         OwnedArray<LibraryModule> modules;
-        project.getModules().createRequiredModules (modules);
+        project.getEnabledModules().createRequiredModules (modules);
 
         for (int j = 0; j < modules.size(); ++j)
         {
diff --git a/extras/Projucer/Source/Wizards/jucer_NewProjectWizard.h b/extras/Projucer/Source/Wizards/jucer_NewProjectWizard.h
index 71ba1fb792..51c3e1fe03 100644
--- a/extras/Projucer/Source/Wizards/jucer_NewProjectWizard.h
+++ b/extras/Projucer/Source/Wizards/jucer_NewProjectWizard.h
@@ -182,14 +182,14 @@ struct NewProjectWizard
 
     void addDefaultModules (Project& project, bool useGlobalPath)
     {
-        StringArray mods (getDefaultModules());
+        auto defaultModules = getDefaultModules();
 
-        ModuleList list;
-        list.addAllModulesInFolder (modulesFolder);
+        AvailableModuleList list;
+        list.scanPaths ({ modulesFolder });
 
-        for (int i = 0; i < mods.size(); ++i)
-            if (const ModuleDescription* info = list.getModuleWithID (mods[i]))
-                project.getModules().addModule (info->moduleFolder, false, useGlobalPath, false);
+        for (auto& mod : list.getAllModules())
+            if (defaultModules.contains (mod.first))
+                project.getEnabledModules().addModule (mod.second, false, useGlobalPath, false);
     }
 
     void addExporters (Project& project, WizardComp& wizardComp)