Project state improvements (#2239)

src-tauri/src/state.rs

@@ -0,0 +1,21 @@
+//! State management for the application.
+
+use kcl_lib::settings::types::file::ProjectState;
+use tokio::sync::Mutex;
+
+#[derive(Debug, Default)]
+pub struct Store(Mutex<Option<ProjectState>>);
+
+impl Store {
+    pub fn new(p: ProjectState) -> Self {
+        Self(Mutex::new(Some(p)))
+    }
+
+    pub async fn get(&self) -> Option<ProjectState> {
+        self.0.lock().await.clone()
+    }
+
+    pub async fn set(&self, p: Option<ProjectState>) {
+        *self.0.lock().await = p;
+    }
+}