Initial commit

arm9/source/romBrowser/viewModels/RomBrowserAppBarViewModel.h

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+#pragma once
+#include "../IRomBrowserController.h"
+
+/// @brief View model for the rom browser app bar
+class RomBrowserAppBarViewModel
+{
+public:
+    explicit RomBrowserAppBarViewModel(IRomBrowserController* romBrowserController)
+        : _romBrowserController(romBrowserController) { }
+
+    void NavigateUp()
+    {
+        _romBrowserController->NavigateUp();
+    }
+
+    void ShowDisplaySettings()
+    {
+        _romBrowserController->ShowDisplaySettings();
+    }
+
+    constexpr RomBrowserLayout GetRomBrowserLayout() const
+    {
+        return _romBrowserController->GetRomBrowserDisplaySettings().layout;
+    }
+
+private:
+    IRomBrowserController* _romBrowserController;
+};