diff --git a/src/content_view.rs b/src/content_view.rs
deleted file mode 100644
index adf4790..0000000
--- a/src/content_view.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-use cacao::{appkit::toolbar::Toolbar, button::Button, layout::Layout, view::{View, ViewDelegate}};
-
-pub struct ScreenView {
-    //pub toolbar: Toolbar
-    pub btn: Button
-}
-
-impl ScreenView {
-    pub fn new() -> Self {
-        //let toolbar = Toolbar::new("toolbar", delegate);
-        let btn = Button::new("test");
-
-        Self { btn }
-    }
-}
-
-impl ViewDelegate for ScreenView {
-    const NAME: &'static str = "ScreenView";
-
-    fn did_load(&mut self, view: View) {
-        view.add_subview(&self.btn);
-    }
-}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index ae03436..9e3adb8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,21 +1,24 @@
-use cacao::appkit::window::{TitleVisibility, Window, WindowConfig};
+use cacao::appkit::window::{TitleVisibility, Window, WindowConfig, WindowController};
 use cacao::appkit::{App, AppDelegate};
-use cacao::color::Color;
-use cacao::view::View;
+use cacao::button::Button;
+use cacao::view::{SplitViewController, View, ViewDelegate};
 
-use content_view::ScreenView;
+use crate::view::details_view::Details;
+use crate::view::sidebar::MainSidebar;
+use crate::view::content_view::ScreenView;
+use crate::window::main_window::MainWindow;
 
 mod disk_util;
 mod ipod_util;
 
-mod content_view;
+mod view;
+mod window;
 
 const VENDOR_ID: u16 = 1452;
 const PRODUCT_ID: u16 = 4617;
 
 struct ILoaderApp {
-    window: Window,
-    content: View<ScreenView>
+    window: WindowController<MainWindow>
 }
 
 impl AppDelegate for ILoaderApp {
@@ -24,13 +27,6 @@ impl AppDelegate for ILoaderApp {
 
     fn did_finish_launching(&self) {
         App::activate();
-
-        self.window.set_title("ILoader");
-        self.window.set_title_visibility(TitleVisibility::Hidden);
-        self.window.set_titlebar_appears_transparent(true);
-        self.window.set_movable_by_background(true);
-        self.window.set_autosave_name("CacaoILoader");
-        self.window.set_content_view(&self.content);
         self.window.show();
     }
 
@@ -50,7 +46,6 @@ fn main() {
     let config = WindowConfig::default();
 
     App::new("com.alterdekim.iloader", ILoaderApp {
-        window: Window::new(config),
-        content: View::with(ScreenView::new())
+        window: WindowController::with(config, MainWindow::default())
     }).run();
 }
diff --git a/src/view.rs b/src/view.rs
new file mode 100644
index 0000000..0fc8701
--- /dev/null
+++ b/src/view.rs
@@ -0,0 +1,53 @@
+
+pub mod sidebar {
+    use cacao::view::{View, ViewDelegate};
+
+    #[derive(Default)]
+    pub struct MainSidebar {
+
+    }
+
+    impl ViewDelegate for MainSidebar {
+        const NAME: &'static str = "MainSidebar";
+
+        fn did_load(&mut self, _view: View) {
+            
+        }
+    }
+}
+
+pub mod content_view {
+    use cacao::{button::Button, layout::Layout, view::{View, ViewDelegate}};
+
+    pub struct ScreenView {
+        pub btn: Button
+    }
+
+    impl Default for ScreenView {
+        fn default() -> Self {
+            let btn = Button::new("test");
+            Self { btn }
+        }
+    }
+
+    impl ViewDelegate for ScreenView {
+        const NAME: &'static str = "ScreenView";
+
+        fn did_load(&mut self, view: View) {
+            view.add_subview(&self.btn);
+        }
+    }
+}
+
+pub mod details_view {
+    use cacao::{button::Button, layout::Layout, view::{View, ViewDelegate}};
+
+    #[derive(Default)]
+    pub struct Details {
+
+    }
+
+    impl ViewDelegate for Details {
+        const NAME: &'static str = "Details";
+    }
+}
\ No newline at end of file
diff --git a/src/window.rs b/src/window.rs
new file mode 100644
index 0000000..8784cab
--- /dev/null
+++ b/src/window.rs
@@ -0,0 +1,31 @@
+pub mod main_window {
+    use cacao::{appkit::window::{TitleVisibility, Window, WindowDelegate}, view::SplitViewController};
+
+    use crate::view::{content_view::ScreenView, details_view::Details, sidebar::MainSidebar};
+
+    #[derive(Default)]
+    pub struct MainWindow {
+        split_view_controller: Option<SplitViewController<MainSidebar, ScreenView, Details>>
+    }
+
+    impl WindowDelegate for MainWindow {
+        const NAME: &'static str = "MainWindow";
+
+        fn did_load(&mut self, window: Window) {
+            window.set_title("ILoader");
+            window.set_title_visibility(TitleVisibility::Hidden);
+            window.set_titlebar_appears_transparent(true);
+            window.set_movable_by_background(true);
+            window.set_autosave_name("CacaoILoader");
+            window.set_minimum_content_size(980., 700.);
+
+            let split_view_controller = SplitViewController::new(MainSidebar::default(),
+            ScreenView::default(),
+            Some(Details::default())); // Some(DetailView::default())
+
+            window.set_content_view_controller(&split_view_controller);
+
+            self.split_view_controller = Some(split_view_controller);
+        }
+    }
+}
\ No newline at end of file