some fixes

src/components.rs

@@ -2,9 +2,9 @@ use std::collections::HashMap;
 
 use crate::{
     create_frame,
-    key::KeyKind,
+    key::{self, KeyKind},
     utils::{closest_component, render_to_frame},
-    Component, UpdateRequest, UpdateResponse,
+    Component, UpdateResponse,
 };
 
 pub fn div() -> Component {
@@ -17,8 +17,8 @@ pub fn div() -> Component {
         (KeyKind::Right, String::from("right")),
     ]);
 
-    fn update(this: &mut Component, req: UpdateRequest) -> UpdateResponse {
-        if let Some(v) = this.binds.get(&req.key.kind) {
+    fn update(this: &mut Component, k: key::Key) -> UpdateResponse {
+        if let Some(v) = this.binds.get(&k.kind) {
             match v.as_str() {
                 "up" => {
                     this.active_child = closest_component(
@@ -54,13 +54,13 @@ pub fn div() -> Component {
 
                 _ => {
                     if let Some(child) = this.get_active_child() {
-                        return (child.update)(child, req);
+                        return (child.update)(child, k);
                     }
                 }
             }
         } else {
             if let Some(child) = this.get_active_child() {
-                return (child.update)(child, req);
+                return (child.update)(child, k);
             }
         }
 
@@ -75,15 +75,22 @@ pub fn div() -> Component {
         frame.join("\n")
     }
 
+    fn tick(this: &mut Component, i: usize) {
+        if let Some(child) = this.get_active_child() {
+            return (child.tick)(child, i);
+        }
+    }
+
     component.update = update;
     component.render = render;
+    component.tick = tick;
     component
 }
 
 pub fn text() -> Component {
     let mut component = Component::new();
 
-    fn update(_: &mut Component, _: UpdateRequest) -> UpdateResponse {
+    fn update(_: &mut Component, _: key::Key) -> UpdateResponse {
         UpdateResponse::None
     }
 
@@ -99,27 +106,34 @@ pub fn text() -> Component {
 pub fn button() -> Component {
     let mut component = Component::new();
 
-    fn update(this: &mut Component, req: UpdateRequest) -> UpdateResponse {
-        if req.key.kind == KeyKind::Enter {
+    fn update(this: &mut Component, k: key::Key) -> UpdateResponse {
+        if k.kind == KeyKind::Enter {
             if this.toggle {
                 this.clicked = !this.clicked;
                 (this.on_click)(this);
             } else {
-                this.clicked = true;
-                (this.on_click)(this);
-                std::thread::sleep(std::time::Duration::from_millis(300));
-                this.clicked = false;
-                (this.on_click)(this);
+                return UpdateResponse::Tick(vec![1, 140]);
             }
         }
         UpdateResponse::None
     }
 
+    fn tick(this: &mut Component, i: usize) {
+        if i == 0 {
+            this.clicked = true;
+            (this.on_click)(this);
+        } else if i == 1 {
+            this.clicked = false;
+            (this.on_click)(this);
+        }
+    }
+
     fn render(s: &mut Component) -> String {
         s.expr.clone()
     }
 
     component.update = update;
     component.render = render;
+    component.tick = tick;
     component
 }

src/lib.rs

@@ -11,17 +11,14 @@ pub enum UpdateResponse {
     Exit,
     Done,
     None,
-}
-
-pub struct UpdateRequest<'a> {
-    pub key: key::Key,
-    pub screen: &'a App,
+    Tick(Vec<u32>),
 }
 
 #[derive(Debug, Clone, PartialEq)]
 pub struct Component {
     pub render: fn(&mut Component) -> String,
-    pub update: fn(&mut Component, UpdateRequest) -> UpdateResponse,
+    pub update: fn(&mut Component, key::Key) -> UpdateResponse,
+    pub tick: fn(&mut Component, usize),
     pub on_click: fn(&mut Component),
     pub x: usize,
     pub y: usize,
@@ -41,6 +38,7 @@ impl Component {
         Component {
             render: |_| String::new(),
             update: |_, _| UpdateResponse::None,
+            tick: |_, _| {},
             on_click: |_| {},
             x: 0,
             y: 0,
@@ -102,19 +100,20 @@ impl App {
         crossterm::terminal::enable_raw_mode().unwrap();
         loop {
             self.render();
-            match (self.component.update)(
-                &mut self.component,
-                UpdateRequest {
-                    key: key::read_key(),
-                    screen: self, // error: cannot borrow `*self` as immutable because it is also borrowed as mutable (IMPORTANT)
-                },
-            ) {
+            match (self.component.update)(&mut self.component, key::read_key()) {
                 UpdateResponse::Exit => {
                     crossterm::terminal::disable_raw_mode().unwrap();
                     utils::clear();
                     utils::show_cursor();
                     return;
                 }
+                UpdateResponse::Tick(ticks) => {
+                    for (i, n) in ticks.into_iter().enumerate() {
+                        std::thread::sleep(std::time::Duration::from_millis(n as u64));
+                        (self.component.tick)(&mut self.component, i);
+                        self.render();
+                    }
+                }
                 _ => {}
             }
         }