Struct AssistantMessageComponent 

pub struct AssistantMessageComponent { /* private fields */ }

Component that renders a complete assistant message.

Mirrors TypeScript AssistantMessageComponent class. Content is rebuilt from AssistantBlocks on every update_blocks (and the legacy update_text), keeping thinking + text in order with TS-faithful spacing.

Implementations

impl AssistantMessageComponent

pub fn new(options: AssistantMessageOptions) -> Self

Create a new assistant message component.

pub fn set_markdown_transformer( &self, transformer: Option<Arc<dyn Fn(&str) -> String + Send + Sync>>, )

B5e: install a markdown transformer applied to raw assistant text before the Markdown renderer styles it. The closure is Send + Sync so it is safe across the streaming-drain + render threads. Idempotent against rebuild_content: callers may set it before the first update_blocks or swap it on a /reload; either way the next rebuild re-applies it. A None value clears the transform (identity) — used on a reload that unregisters all markdown transformers.

On a transform CHANGE, the last blocks are rebuilt so the new transform is reflected immediately (mirrors set_hide_thinking/set_output_pad).

pub fn default() -> Self

Create with default options.

pub fn update_blocks(&self, blocks: &[AssistantBlock])

Update the content from a flat block list. Mirrors the TS updateContent ordering + spacing: text blocks render as markdown, runs of consecutive thinking blocks coalesce into one dim-italic markdown section (joined with \n\n), and a blank line separates a thinking run from a following visible block. When hide_thinking is set, each thinking run collapses to a single dim label line.

pub fn update_text(&self, text: &str)

Update the content with assistant message text.

Convenience for callers that have only text (the legacy path). The block-aware [update_blocks] supersedes this where thinking blocks are available; both share the rebuild path.

pub fn update_error(&self, error: &str, stop_reason: &str)

Update with error message.

pub fn set_hide_thinking(&self, hide: bool)

Set hide thinking option. Rebuilds the last content so the toggle is reflected immediately (mirrors the TS setter).

pub fn set_show_images(&self, show: bool)

pub fn set_hidden_thinking_label(&self, label: &str)

Set hidden thinking label. Rebuilds the last content (mirrors TS).

pub fn set_output_pad(&self, pad: usize)

Set output padding. Rebuilds the last content (mirrors TS).

pub fn has_tool_calls(&self) -> bool

Check if has tool calls.

pub fn markdown_transformer( &self, ) -> Option<Arc<dyn Fn(&str) -> String + Send + Sync>>

The currently installed markdown transformer (B5e), if any. The host reads this to carry an existing transform into a fresh component (e.g. after a /reload) so the new component renders with the same plugin transformer without the host re-querying the registry.

pub fn set_trailing_spacing(&self, rows: usize)

Add trailing rows only when the message renders visible content.

pub fn set_streaming(&self, streaming: bool)

Set streaming state.

Trait Implementations

impl Component for AssistantMessageComponent

fn render(&self, width: usize) -> Vec<String>

Render the component to lines for the given viewport width.

fn invalidate(&self)

Invalidate any cached rendering state. Called when theme changes or when component needs to re-render from scratch.

fn as_any(&self) -> &dyn Any

Downcast to Any for runtime type checking. This enables the layout system to check for LayoutNodeProvider.

fn handle_input(&self, _data: &str) -> bool

Optional handler for keyboard input when component has focus.

fn wants_key_release(&self) -> bool

If true, component receives key release events (Kitty protocol). Default is false - release events are filtered out.