monologue-trees/src/editor/mod.rs

pub mod audio;

pub mod assets;

use crate::ui;
use bevy::{asset::Asset, prelude::*};

pub fn ui_active<T: Asset>(
    events: Query<&Handle<T>, Added<Handle<T>>>,
    buttons: Query<(Entity, &ui::TargetAsset<T>)>,
    mut commands: Commands,
) {
    events.iter().for_each(|this_handle| {
        buttons
            .iter()
            .find_map(|(entity, ui::TargetAsset { handle })| {
                if handle == this_handle {
                    Some(entity)
                } else {
                    None
                }
            })
            .and_then(|entity| {
                commands.entity(entity).insert(ui::Active);
                Some(())
            });
    });
}

pub fn ui_inactive<T: Asset>(
    mut events: RemovedComponents<Handle<T>>,
    targets: Query<(Entity, &ui::TargetAsset<T>), With<ui::Active>>,
    sources: Query<&Handle<T>>,
    mut commands: Commands,
) {
    events.iter().for_each(|_| {
        targets
            .iter()
            .find_map(|(entity, ui::TargetAsset { handle })| {
                (!sources.iter().any(|this_handle| this_handle == handle)).then_some(entity)
            })
            .and_then(|entity| {
                commands.entity(entity).remove::<ui::Active>();
                Some(())
            });
    });
}