b289eea lib: Introduce render callback — radicle-tui

Radicle terminal user interface

lib: Introduce render callback

Erik Kundt committed 1 year ago

commit b289eeaf1f7914f3e7ce5b0a1957b7e05d95625b
parent bf602d0baa9bae65efed43f695c22297c792296f

1 file changed +18 -1

modified src/ui/widget.rs

@@ -15,6 +15,7 @@ use ratatui::prelude::*;

 pub type BoxedView<S, M> = Box<dyn View<State = S, Message = M>>;
 pub type UpdateCallback<S> = fn(&S) -> ViewProps;
 pub type EventCallback<M> = fn(Option<&ViewState>, Key) -> Option<M>;
 pub type RenderCallback<M> = fn(Option<&ViewProps>, &RenderProps) -> Option<M>;
 /// `ViewProps` are properties of a `View`. They define a `View`s data, configuration etc.
 /// Since the framework itself does not know the concrete type of `View`, it also does not

@@ -147,6 +148,7 @@ pub struct Widget<S, M> {

     sender: UnboundedSender<M>,
     on_update: Option<UpdateCallback<S>>,
     on_event: Option<EventCallback<M>>,
     on_render: Option<RenderCallback<M>>,
 }
 impl<S: 'static, M: 'static> Widget<S, M> {

@@ -161,6 +163,7 @@ impl<S: 'static, M: 'static> Widget<S, M> {

             sender: sender.clone(),
             on_update: None,
             on_event: None,
             on_render: None,
         }
     }

@@ -193,7 +196,12 @@ impl<S: 'static, M: 'static> Widget<S, M> {

     /// Renders the wrapped view.
     pub fn render(&self, render: RenderProps, frame: &mut Frame) {
         self.view.render(self.props.as_ref(), render, frame);
         self.view.render(self.props.as_ref(), render.clone(), frame);
         if let Some(on_render) = self.on_render {
             (on_render)(self.props.as_ref(), &render)
                 .and_then(|message| self.sender.send(message).ok());
         }
     }
     /// Sets the optional custom event handler.

@@ -214,6 +222,15 @@ impl<S: 'static, M: 'static> Widget<S, M> {

         self
     }
     /// Sets the optional update handler.
     pub fn on_render(mut self, callback: RenderCallback<M>) -> Self
     where
         Self: Sized,
     {
         self.on_render = Some(callback);
         self
     }
     /// Sends a message to the widgets' message channel.
     pub fn send(&self, message: M) {
         let _ = self.sender.send(message);