control-center: add in-process control center

src/control_center/cc_sidebar.rs

@@ -0,0 +1,48 @@
+use {
+    crate::control_center::{ControlCenterInner, Pane},
+    egui::{Align, Layout, ScrollArea, Ui, ViewportCommand},
+    egui_tiles::Tree,
+    linearize::{Linearize, LinearizeExt},
+    std::{rc::Rc, sync::LazyLock},
+};
+
+#[derive(Copy, Clone, Linearize)]
+enum PaneName {}
+
+impl PaneName {
+    fn name(self) -> &'static str {
+        match self {}
+    }
+}
+
+static TYPES: LazyLock<Vec<PaneName>> = LazyLock::new(|| {
+    let mut res: Vec<_> = PaneName::variants().collect();
+    res.sort_by_key(|t| t.name());
+    res
+});
+
+impl ControlCenterInner {
+    pub fn show_sidebar(self: &Rc<Self>, tree: &mut Tree<Pane>, ui: &mut Ui) {
+        ui.with_layout(
+            Layout::top_down(Align::Center).with_cross_justify(true),
+            |ui| {
+                ui.add_space(6.0);
+                if ui.button("Close").clicked() {
+                    ui.ctx().send_viewport_cmd(ViewportCommand::Close);
+                }
+                ui.separator();
+                ScrollArea::vertical().show(ui, |ui| {
+                    for &ty in &*TYPES {
+                        if ui.button(ty.name()).clicked() {
+                            let _ty = match ty {};
+                            #[expect(unreachable_code)]
+                            self.open(tree, _ty);
+                            ui.ctx().request_repaint();
+                        }
+                    }
+                    ui.add_space(3.0);
+                })
+            },
+        );
+    }
+}