Trait net_traits::image_cache::ImageCache

pub trait ImageCache: Sync + Send {
    fn new(webrender_api: WebrenderIpcSender) -> Self
    where
        Self: Sized;
    fn get_image(
        &self,
        url: ServoUrl,
        origin: ImmutableOrigin,
        cors_setting: Option<CorsSettings>
    ) -> Option<Arc<Image>>;
    fn get_cached_image_status(
        &self,
        url: ServoUrl,
        origin: ImmutableOrigin,
        cors_setting: Option<CorsSettings>,
        use_placeholder: UsePlaceholder
    ) -> ImageCacheResult;
    fn track_image(
        &self,
        url: ServoUrl,
        origin: ImmutableOrigin,
        cors_setting: Option<CorsSettings>,
        sender: IpcSender<PendingImageResponse>,
        use_placeholder: UsePlaceholder
    ) -> ImageCacheResult;
    fn add_listener(&self, id: PendingImageId, listener: ImageResponder);
    fn notify_pending_response(
        &self,
        id: PendingImageId,
        action: FetchResponseMsg
    );
}

Required Methods

fn new(webrender_api: WebrenderIpcSender) -> Selfwhere
    Self: Sized,

fn get_image(
    &self,
    url: ServoUrl,
    origin: ImmutableOrigin,
    cors_setting: Option<CorsSettings>
) -> Option<Arc<Image>>

Definitively check whether there is a cached, fully loaded image available.

fn get_cached_image_status(
    &self,
    url: ServoUrl,
    origin: ImmutableOrigin,
    cors_setting: Option<CorsSettings>,
    use_placeholder: UsePlaceholder
) -> ImageCacheResult

fn track_image(
    &self,
    url: ServoUrl,
    origin: ImmutableOrigin,
    cors_setting: Option<CorsSettings>,
    sender: IpcSender<PendingImageResponse>,
    use_placeholder: UsePlaceholder
) -> ImageCacheResult

Add a listener for the provided pending image id, eventually called by ImageCacheStore::complete_load. If only metadata is available, Available(ImageOrMetadataAvailable) will be returned. If Available(ImageOrMetadataAvailable::Image) or LoadError is the final value, the provided listener will be dropped (consumed & not added to PendingLoad).

fn add_listener(&self, id: PendingImageId, listener: ImageResponder)

Add a new listener for the given pending image id. If the image is already present, the responder will still receive the expected response.

fn notify_pending_response(&self, id: PendingImageId, action: FetchResponseMsg)

Inform the image cache about a response for a pending request.

Implementors