Module tui 

TUI dataset viewer module TUI Dataset Viewer Module

Provides terminal-based visualization of Arrow datasets. Designed for pure WASM compatibility with zero JavaScript dependencies.

Architecture

The TUI module follows the presentar-terminal architecture:

• DatasetAdapter - Uniform access to Arrow datasets
• DatasetViewer - Scrollable table widget
• SchemaInspector - Schema display widget
• RowDetailView - Expanded row view widget

WASM Compatibility

All components are designed for wasm32-unknown-unknown:

• No panic paths (no unwrap/expect)
• No filesystem access in WASM mode
• No threading (single-threaded model)
• Zero JavaScript dependencies

Example

use alimentar::tui::{DatasetAdapter, DatasetViewer};
use alimentar::ArrowDataset;

// Load dataset
let dataset = ArrowDataset::from_parquet("data.parquet")?;
let adapter = DatasetAdapter::from_dataset(&dataset)?;

// Create viewer
let viewer = DatasetViewer::new(adapter);

// Render to canvas
viewer.paint(&mut canvas);

Structs

DatasetViewer

A scrollable table view for displaying Arrow datasets

RowDetailView

Row detail view widget for displaying a single record

SchemaInspector

Schema inspector widget for displaying dataset schema

ScrollState

Scroll state for navigating large datasets

Enums

DatasetAdapter

Adapter providing uniform access to Arrow datasets for TUI rendering

TuiError

TUI-specific error type

Functions

display_width

Calculate the display width of a string

format_array_value

Format an Arrow array value at the given row index as a display string

truncate_string

Truncate a string to fit within a maximum display width

Type Aliases

TuiResult

Result type for TUI operations