rab::tui::component

Trait Component

pub trait Component {
Show 13 methods    // Required method
    fn render(&mut self, width: usize) -> Vec<String>;

    // Provided methods
    fn render_padded(&mut self, width: usize) -> Vec<String> { ... }
    fn handle_input(&mut self, _key: &KeyEvent) -> bool { ... }
    fn handle_paste(&mut self, _text: &str) { ... }
    fn invalidate(&mut self) { ... }
    fn is_dirty(&self) -> bool { ... }
    fn clear_dirty(&mut self) { ... }
    fn cache_key(&self, _width: usize) -> Option<RenderCacheKey> { ... }
    fn get_cached_render(&self) -> Option<&RenderCache> { ... }
    fn set_cached_render(&mut self, _cache: RenderCache) { ... }
    fn is_focusable(&self) -> bool { ... }
    fn set_expanded(&mut self, _expanded: bool) { ... }
    fn set_hide_thinking(&mut self, _hide: bool) { ... }
}

Expand description

Every renderable UI element.

Required Methods§

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

Render to lines for the given viewport width. Each returned string MUST NOT exceed width in visible width.

Provided Methods§

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

Render and pad each line to exactly width visible columns. Default implementation calls render(width) and pads each line with trailing spaces if its visible width is less than width.

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fn handle_input(&mut self, _key: &KeyEvent) -> bool

Handle keyboard input. Return true if consumed.

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fn handle_paste(&mut self, _text: &str)

Handle a paste event (text from bracketed paste mode). Default no-op; override to process pasted content.

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fn invalidate(&mut self)

Mark this component as needing re-render. Called when internal state changes (output received, expanded toggled, etc.).

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fn is_dirty(&self) -> bool

Check if this component needs re-render. Default: false — the Container’s per-child cache tracking determines whether to re-render. Override to return true for components whose state can change without explicit invalidation (e.g. ToolExecComponent receiving streaming output).

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