update currentLayout,create Alternative if !exists

app/dockcorona.cpp

@@ -230,11 +230,16 @@ void DockCorona::loadLatteLayout(QString layoutName)
 {
     QString layoutPath = m_layoutManager->layoutPath(layoutName);
 
+    if (layoutPath.isEmpty() && layoutName == i18n("Alternative")) {
+        layoutPath = m_layoutManager->requestLayout(i18n("Alternative"), i18n("Default"));
+    }
+
     if (!layoutPath.isEmpty()) {
         qDebug() << "corona is unloading the interface...";
         unload();
         qDebug() << "loading config file for layout:" << layoutName << " - " << layoutPath;
         loadLayout(layoutPath);
+        universalSettings()->setCurrentLayoutName(layoutName);
 
         foreach (auto containment, containments())
             addDock(containment);

app/layoutmanager.cpp

@@ -20,6 +20,11 @@
 
 #include "layoutmanager.h"
 
+#include <QDir>
+#include <QFile>
+
+#include <KLocalizedString>
+
 namespace Latte {
 
 LayoutManager::LayoutManager(QObject *parent)
@@ -64,4 +69,19 @@ QString LayoutManager::layoutPath(QString layoutName)
 }
 
 
+QString LayoutManager::requestLayout(QString layoutName, QString preset)
+{
+    QString newFile = QDir::homePath() + "/.config/latte/" + layoutName + ".layout.latte";
+    QString resFile;
+    qDebug() << "adding layout : " << layoutName << " based on preset:" << preset;
+
+    if (preset == i18n("Default") && !QFile(newFile).exists()) {
+        qDebug() << "adding layout : succeed";
+        QFile(m_corona->kPackage().filePath("preset1")).copy(newFile);
+        resFile = newFile;
+    }
+
+    return resFile;
+}
+
 }

app/layoutmanager.h

@@ -45,6 +45,9 @@ public:
 
     QString layoutPath(QString layoutName);
 
+    //! creates a new layout with layoutName based on the preset
+    QString requestLayout(QString layoutName, QString preset);
+
 private:
     DockCorona *m_corona{nullptr};
     Importer *m_importer{nullptr};