add nav drawer router

Signed-off-by: kernelkind <kernelkind@gmail.com>

crates/notedeck/src/lib.rs

@@ -26,6 +26,7 @@ pub mod profile;
 pub mod relay_debug;
 pub mod relayspec;
 mod result;
+mod route;
 mod setup;
 pub mod storage;
 mod style;
@@ -78,6 +79,7 @@ pub use profile::get_profile_url;
 pub use relay_debug::RelayDebugView;
 pub use relayspec::RelaySpec;
 pub use result::Result;
+pub use route::DrawerRouter;
 pub use storage::{AccountStorage, DataPath, DataPathType, Directory};
 pub use style::NotedeckTextStyle;
 pub use theme::ColorTheme;

crates/notedeck/src/route.rs

@@ -0,0 +1,31 @@
+#[derive(Clone, Debug, Default)]
+pub struct DrawerRouter {
+    pub returning: bool,
+    pub navigating: bool,
+    pub drawer_focused: bool,
+}
+
+impl DrawerRouter {
+    pub fn open(&mut self) {
+        self.navigating = true;
+    }
+
+    pub fn close(&mut self) {
+        self.returning = true;
+    }
+
+    pub fn closed(&mut self) {
+        self.clear();
+        self.drawer_focused = false;
+    }
+
+    fn clear(&mut self) {
+        self.navigating = false;
+        self.returning = false;
+    }
+
+    pub fn opened(&mut self) {
+        self.clear();
+        self.drawer_focused = true;
+    }
+}