Widget focus

src/widgets/resources.rs

@@ -1,4 +1,7 @@
 use bevy::prelude::*;
 
+/// Terminal widget entity currently focused and handling input
+/// Can be manipulated directly or you can request an entity be focused through
+/// the `focus_widget` command.
 #[derive(Resource, Default, Deref, DerefMut, Debug)]
 pub struct FocusedWidget(pub Option<Entity>);

src/widgets/systems.rs

@@ -2,19 +2,24 @@ use bevy::prelude::*;
 
 use crate::input::events::TerminalInputEvent;
 
-use super::components::Widget;
+use super::{components::Widget, resources::FocusedWidget};
 
-/// Invokes every enabled widget's `handle_events` methods for each incoming input event
+/// Invokes focused widget's `handle_events` methods for each incoming input event
 pub fn widget_input_handling(
     mut widgets: Query<&mut Widget>,
     mut event_reader: EventReader<TerminalInputEvent>,
     mut commands: Commands,
+    focused_widget: Res<FocusedWidget>,
 ) {
+    if let Some(entity) = **focused_widget {
+        if let Ok(mut widget) = widgets.get_mut(entity) {
+            if widget.enabled == true {
                 for event in event_reader.read() {
-        for mut widget in widgets.iter_mut().filter(|widget| widget.enabled) {
                     widget.widget.handle_events(event, &mut commands);
                 }
             }
+        }
+    }
 }
 
 pub fn update_widgets(mut widgets: Query<&mut Widget>, time: Res<Time>, mut commands: Commands) {