Add swtich to example

linebender · Aug 28, 2023 · 569cfe3 · 569cfe3
1 parent f844364
commit 569cfe3
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Showing 2 changed files with 28 additions and 14 deletions.
diff --git a/examples/hello.rs b/examples/hello.rs
@@ -1,34 +1,41 @@
-use xilem::view::{button, h_stack, v_stack};
+use xilem::view::{button, h_stack, switch, v_stack, Adapt};
 use xilem::{view::View, App, AppLauncher};
 
-fn app_logic(data: &mut i32) -> impl View<i32> {
+fn app_logic(data: &mut AppData) -> impl View<AppData> {
     // here's some logic, deriving state for the view from our state
-    let label = if *data == 1 {
+    let count = data.count;
+    let label = if count == 1 {
         "clicked 1 time".to_string()
     } else {
-        format!("clicked {data} times")
+        format!("clicked {count} times")
     };
 
     // The actual UI Code starts here
     v_stack((
-        button(label, |data| {
+        button(label, |data: &mut AppData| {
             println!("clicked");
-            *data += 1;
+            data.count += 1;
         }),
         h_stack((
-            button("decrease", |data| {
+            button("decrease", |data: &mut AppData| {
                 println!("clicked decrease");
-                *data -= 1;
+                data.count -= 1;
             }),
-            button("reset", |data| {
+            button("reset", |data: &mut AppData| {
                 println!("clicked reset");
-                *data = 0;
+                data.count = 0;
             }),
+            switch(data, |data: &mut AppData| &mut data.is_on),
         )),
     ))
     .with_spacing(20.0)
 }
 
+struct AppData {
+    count: u32,
+    is_on: bool,
+}
+
 fn main() {
     /*
     let app = Application::new().unwrap();
@@ -40,6 +47,11 @@ fn main() {
     window_handle.show();
     app.run(None);
     */
-    let app = App::new(0, app_logic);
+    let data = AppData {
+        count: 0,
+        is_on: false,
+    };
+
+    let app = App::new(data, app_logic);
     AppLauncher::new(app).run()
 }
diff --git a/src/view/switch.rs b/src/view/switch.rs
@@ -25,17 +25,19 @@ pub struct Switch<T> {
     callback: Box<dyn Fn(&mut T) -> &mut bool + Send>,
 }
 
-pub fn switch<T>(data: &mut T, clicked: impl Fn(&mut T) -> &mut bool + Send + 'static) -> Switch<T> {
+pub fn switch<T>(
+    data: &mut T,
+    clicked: impl Fn(&mut T) -> &mut bool + Send + 'static,
+) -> Switch<T> {
     Switch::new(data, clicked)
 }
 
 impl<T> Switch<T> {
     pub fn new(data: &mut T, clicked: impl Fn(&mut T) -> &mut bool + Send + 'static) -> Self {
         let is_on = *(clicked)(data);
-        Switch{ 
+        Switch {
             is_on,
             callback: Box::new(clicked),
-
         }
     }
 }