Struct BlockCache 

pub struct BlockCache { /* private fields */ }

Cached rendered lines for a block. Stores a version counter so the cache is only recomputed when the block content actually changes.

Fields are private - use invalidate() to mark stale, is_stale() to check, get() to read cached lines, and store() to populate.

Implementations

impl BlockCache

pub fn invalidate(&mut self)

Bump the version to invalidate cached lines and height.

pub fn get(&self) -> Option<&Vec<Line<'static>>>

Get a reference to the cached lines, if fresh.

pub fn store(&mut self, lines: Vec<Line<'static>>)

Store freshly rendered lines, marking the cache as clean. Height is set separately via set_height() after measurement.

pub fn set_height(&mut self, height: usize, width: u16)

Set the wrapped height for the cached lines at the given width. Called by the viewport/chat layer after Paragraph::line_count(width). Separate from store() so height measurement is the viewport’s job.

pub fn store_with_height( &mut self, lines: Vec<Line<'static>>, height: usize, width: u16, )

Store lines and set height in one call. Deprecated: prefer store() + set_height() to keep concerns separate.

pub fn height_at(&self, width: u16) -> Option<usize>

Get the cached wrapped height if cache is valid and was computed at the given width.

Trait Implementations

impl Default for BlockCache

fn default() -> BlockCache

Returns the “default value” for a type.