Struct Context 

pub struct Context {
    pub content: Arc<Mutex<ContentMap>>,
    pub lookup_handler: LookupHandler<Id, ContentStatus, Error>,
    pub loaded: AtomicUsize,
}

Registry and loading context for DOM content, tracking declared content entries, de-duplicating in-flight load requests and counting loaded items.

Fields

content: Arc<Mutex<ContentMap>>

Map of registered content entries keyed by their id.

lookup_handler: LookupHandler<Id, ContentStatus, Error>

Coordinates concurrent load requests so that each content id is only loaded once while other callers await the shared result.

loaded: AtomicUsize

Running count of content entries that have been loaded.

Implementations

impl Context

pub fn declare(&self, content: ContentList<'_>)

Register the given content entries with this context, making them available for later loading by id.

pub fn get(&self, id: &Id) -> Option<Arc<Content>>

Return the registered Content entry for the given id, if any.

pub async fn load_content( self: &Arc<Self>, content: Arc<Content>, ) -> Result<ContentStatus>

Load a single content entry, injecting it into the DOM. Concurrent requests for the same content are de-duplicated via the lookup handler, and already-loaded content resolves immediately as ContentStatus::Exists.

pub async fn load_ids(self: &Arc<Self>, list: &[Id]) -> Result<()>

Load all content entries identified by the given list of ids, resolving and injecting each into the DOM, and log the total number of references loaded along with the elapsed time.

Trait Implementations

impl Default for Context

fn default() -> Self

Returns the “default value” for a type.