Struct ImageCache 

pub struct ImageCache { /* private fields */ }

Thread-safe cache of image load states, shared across clones (like the GitHub caches). Cheap to clone: just bumps the inner Arc.

Implementations

impl ImageCache

pub fn new() -> Self

pub fn get(&self, url: &str) -> Option<ImageState>

pub fn contains(&self, url: &str) -> bool

Presence check without cloning the (image-bearing) state — for the load guard.

pub fn mark_loading(&self, url: &str)

pub fn set_loaded(&self, url: &str, image: LoadedImage)

pub fn set_failed(&self, url: &str)

pub fn set_failed_with(&self, url: &str, reason: impl Into<Arc<str>>)

Mark failed with a short reason (mermaid/LaTeX syntax error) shown in the placeholder.

pub fn store_render( &self, url: &str, result: Result<LoadedImage, Option<String>>, )

Store the outcome of an off-thread render: Ok → loaded, Err(Some) → failed with a reason shown in the placeholder (collapsed + length-capped), Err(None) → generic failure. Shared by the mermaid and math render paths.

Trait Implementations

impl Clone for ImageCache

fn clone(&self) -> ImageCache

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for ImageCache

fn default() -> ImageCache

Returns the “default value” for a type.