testing state management

src/lib.rs

@@ -15,6 +15,7 @@ pub mod events;
 pub mod extensions;
 pub mod macros;
 pub mod render_scope;
+pub mod state;
 pub mod style;
 pub mod utils;
 

src/main.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 use osui::{
     element::{
         input::{Input, InputKeyPress},
@@ -5,37 +7,48 @@ use osui::{
     },
     events::{Close, EventManager},
     extensions::{keypress::KeyPressExtension, tick_rate::TickRate, ExtensionManager},
+    state::StateManager,
     style::Transform,
     Screen,
 };
 
 fn main() {
+    let states = StateManager::new(app);
+    app(states);
+}
+
+fn app(states: Arc<StateManager>) {
     let mut screen = Screen::new();
     let mut extensions = ExtensionManager::new();
     let mut events = EventManager::new();
     extensions.add(KeyPressExtension);
     extensions.add(TickRate(255));
 
+    let my_state = states.use_state(20);
+
     screen
         .draw(Rect(0xffffff))
         .component(Transform::center().dimensions(30, 3));
 
     screen
-        .draw(format!("Type quit to quit"))
+        .draw(format!("Type quit to quit {}", my_state.get()))
         .component(Transform::new().bottom().margin(0, -1));
 
     screen
         .draw(Input::new())
         .component(Transform::new().bottom());
 
-    events.on(|events, event: Box<InputKeyPress>| match event.1.code {
-        crossterm::event::KeyCode::Enter => {
-            if event.0 == "quit" {
-                events.dispatch(Close);
+    events.on(
+        move |events, event: Box<InputKeyPress>| match event.1.code {
+            crossterm::event::KeyCode::Enter => {
+                my_state.set(my_state.get() + 10);
+                // if event.0 == "quit" {
+                // events.dispatch(Close);
+                // }
             }
-        }
-        _ => {}
-    });
+            _ => {}
+        },
+    );
 
     screen.run(&mut events, &mut extensions).unwrap();
 }

src/state.rs

@@ -0,0 +1,28 @@
+use std::sync::{Arc, Mutex};
+
+pub struct StateManager(fn(Arc<StateManager>));
+
+pub struct State<S>(Arc<StateManager>, Arc<Mutex<S>>);
+
+impl StateManager {
+    pub fn new(recall: fn(Arc<StateManager>)) -> Arc<StateManager> {
+        Arc::new(StateManager(recall))
+    }
+
+    pub fn use_state<S>(self: Arc<Self>, state: S) -> State<S> {
+        State(self.clone(), Arc::new(Mutex::new(state)))
+    }
+}
+
+impl<S> State<S> {
+    pub fn set(&self, to: S) {
+        *self.1.lock().unwrap() = to;
+        (self.0 .0)(self.0.clone())
+    }
+}
+
+impl State<i32> {
+    pub fn get(&self) -> i32 {
+        *self.1.lock().unwrap()
+    }
+}