[libcalamaresui] Change return type of loadedInstanceKeys()

- Replace stringlist with a stronger-typed list of InstanceKey objects
 - Move smashing-that-to-stringlist into consumers of the list
   (just one, the debug window)

src/calamares/DebugWindow.cpp

@@ -113,7 +113,13 @@ DebugWindow::DebugWindow()
     } );
 
     // Modules page
-    QStringListModel* modulesModel = new QStringListModel( ModuleManager::instance()->loadedInstanceKeys() );
+    QStringList modulesKeys;
+    for ( const auto& m : ModuleManager::instance()->loadedInstanceKeys() )
+    {
+        modulesKeys << m.toString();
+    }
+
+    QStringListModel* modulesModel = new QStringListModel( modulesKeys );
     m_ui->modulesListView->setModel( modulesModel );
     m_ui->modulesListView->setSelectionMode( QAbstractItemView::SingleSelection );
 

src/libcalamaresui/modulesystem/ModuleManager.cpp

@@ -95,16 +95,12 @@ ModuleManager::doInit()
                     QFileInfo descriptorFileInfo( currentDir.absoluteFilePath( QLatin1String( "module.desc" ) ) );
                     if ( !descriptorFileInfo.exists() )
                     {
-                        cDebug() << bad_descriptor
-                                 << descriptorFileInfo.absoluteFilePath()
-                                 << "(missing)";
+                        cDebug() << bad_descriptor << descriptorFileInfo.absoluteFilePath() << "(missing)";
                         continue;
                     }
                     if ( !descriptorFileInfo.isReadable() )
                     {
-                        cDebug() << bad_descriptor
-                                 << descriptorFileInfo.absoluteFilePath()
-                                 << "(unreadable)";
+                        cDebug() << bad_descriptor << descriptorFileInfo.absoluteFilePath() << "(unreadable)";
                         continue;
                     }
 
@@ -133,22 +129,16 @@ ModuleManager::doInit()
     }
     // At this point m_availableDescriptorsByModuleName is filled with
     // the modules that were found in the search paths.
-    cDebug() << "Found" 
-        << m_availableDescriptorsByModuleName.count() << "modules"
+    cDebug() << "Found" << m_availableDescriptorsByModuleName.count() << "modules"
              << m_moduleDirectoriesByModuleName.count() << "names";
     emit initDone();
 }
 
 
-QStringList
+QList< ModuleSystem::InstanceKey >
 ModuleManager::loadedInstanceKeys()
 {
-    QStringList l;
-    for ( const auto& m : m_loadedModulesByInstanceKey.keys() )
-    {
-        l << m.toString();
-    }
-    return l;
+    return m_loadedModulesByInstanceKey.keys();
 }
 
 
@@ -195,8 +185,7 @@ ModuleManager::loadModules()
     Settings::InstanceDescriptionList customInstances = Settings::instance()->customModuleInstances();
 
     QStringList failedModules;
-    const auto modulesSequence
-        = Settings::instance()->modulesSequence() ;
+    const auto modulesSequence = Settings::instance()->modulesSequence();
     for ( const auto& modulePhase : modulesSequence )
     {
         ModuleSystem::Action currentAction = modulePhase.first;
@@ -269,7 +258,8 @@ ModuleManager::loadModules()
                                                      m_moduleDirectoriesByModuleName.value( instanceKey.module() ) );
                 if ( !thisModule )
                 {
-                    cError() << "Module" << instanceKey.toString() << "cannot be created from descriptor" << configFileName;
+                    cError() << "Module" << instanceKey.toString() << "cannot be created from descriptor"
+                             << configFileName;
                     failedModules.append( instanceKey.toString() );
                     continue;
                 }

src/libcalamaresui/modulesystem/ModuleManager.h

@@ -62,7 +62,7 @@ public:
      * modules.
      * @return a QStringList with the instance keys.
      */
-    QStringList loadedInstanceKeys();
+    QList< ModuleSystem::InstanceKey > loadedInstanceKeys();
 
     /**
      * @brief moduleDescriptor returns the module descriptor structure for a given module.