Struct WebPresenter 

pub struct WebPresenter { /* private fields */ }

WASM presenter that captures buffers and logs for the host.

Implementations

impl WebPresenter

pub fn new() -> Self

Create a new presenter with modern capabilities.

pub const fn outputs(&self) -> &WebOutputs

Get captured outputs.

pub fn outputs_mut(&mut self) -> &mut WebOutputs

Mutably access captured outputs.

pub fn take_outputs(&mut self) -> WebOutputs

Take captured outputs, leaving empty defaults.

pub fn flatten_patches_into(&self, cells: &mut Vec<u32>, spans: &mut Vec<u32>)

Flatten patch runs into caller-provided reusable buffers.

Clears and refills the provided cells and spans Vecs, reusing their heap capacity across frames to avoid per-frame allocation.

pub fn present_ui_owned( &mut self, buf: Buffer, diff: Option<&BufferDiff>, full_repaint_hint: bool, )

Present a frame, taking ownership of the buffer to avoid cloning.

This is the zero-copy fast path for callers that can give up ownership (e.g. StepProgram::render_frame). The buffer is moved directly into last_buffer instead of being cloned.

Trait Implementations

impl BackendPresenter for WebPresenter

type Error = WebBackendError

Platform-specific error type.

fn capabilities(&self) -> &TerminalCapabilities

Terminal capabilities detected by this backend.

fn write_log(&mut self, text: &str) -> Result<(), Self::Error>

Write a log line to the scrollback region (inline mode) or stderr.

fn present_ui( &mut self, buf: &Buffer, diff: Option<&BufferDiff>, full_repaint_hint: bool, ) -> Result<(), Self::Error>

Present a UI frame.

fn gc(&mut self)

Optional: release resources held by the presenter (e.g., grapheme pool compaction).

impl Clone for WebPresenter

fn clone(&self) -> WebPresenter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WebPresenter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for WebPresenter

fn default() -> Self

Returns the “default value” for a type.