Struct CreateEvent 

pub struct CreateEvent {
    pub url: Url,
    pub language_id: Option<String>,
    pub entity: Entity,
}

Event triggers when a document is opened

Example

#[derive(Component)]
pub struct TurtleLang;

#[derive(Debug)]
pub struct TurtleHelper;
impl LangHelper for TurtleHelper {
    fn keyword(&self) -> &[&'static str] {
        &[
            "@prefix",
            "@base",
            "a",
        ]
    }
}

let mut world = World::new();
// This example tells the ECS system that the document is Turtle,
// adding Turtle specific components
world.add_observer(|trigger: On<CreateEvent>, mut commands: Commands| {
    match &trigger.event().language_id {
        Some(x) if x == "turtle" => {
            commands
                .entity(trigger.event_target())
                .insert((TurtleLang, DynLang(Box::new(TurtleHelper))));
            return;
        }
        _ => {}
    }
    if trigger.event().url.as_str().ends_with(".ttl") {
        commands
            .entity(trigger.event_target())
            .insert((TurtleLang, DynLang(Box::new(TurtleHelper))));
        return;
    }
});

Fields

url: Url

language_id: Option<String>

entity: Entity

Trait Implementations

impl EntityEvent for CreateEvent

where Self: Send + Sync + 'static,

fn event_target(&self) -> Entity

The Entity “target” of this EntityEvent. When triggered, this will run observers that watch for this specific entity.

impl Event for CreateEvent

where Self: Send + Sync + 'static,

type Trigger<'a> = EntityTrigger

Defines which observers will run, what data will be passed to them, and the order they will be run in. See Trigger for more info.