`InputRenderable` — single-line input

A single-line text field with a cursor, placeholder, min/max length enforcement, and programmatic editing. Focusable.

InputRenderable::new(value: Option<String>) -> Self

Configuration

Method	Default	Effect
`set_value(&str)`	`""`	Replace the value (strips `\n`/`\r`, truncates to `max_length`, cursor to end).
`set_placeholder(String)`	`""`	Ghost text shown when the field is empty.
`set_max_length(usize)`	`1000`	Hard cap; truncating the value on shrink.
`set_min_length(usize)`	`0`	Panics if `min > max_length`.
`set_text_color(Option<ColorInput>)`	`#FFFFFF`	Text color.
`set_background_color(Option<ColorInput>)`	transparent	Background.

Reading

value() -> &str
placeholder() -> &str
max_length() -> usize
min_length() -> usize
cursor_offset() -> usize      // byte offset into value

Editing

Method	Behavior	Returns
`insert_text(&str)`	Insert at the cursor; strips newlines, respects `max_length`.	—
`delete_char_backward()`	Delete the char before the cursor.	`false` if at start / empty
`delete_char()`	Delete the char at the cursor.	`false` if at end
`set_value(&str)`	Replace everything.	—

insert_text ignores newlines and stops at max_length; the cursor advances with inserted text. delete_char_backward respects char boundaries (won’t split a multi-byte char).

Rendering

render_self draws either the value or — when empty — the placeholder, left-to-right from the area’s start, clipped to the area width. No border is drawn; wrap this widget in a BoxRenderable for a framed field.

Example

use cosh_tui::core::renderables::input::InputRenderable;

let mut input = InputRenderable::new(Some("hi".into()));
input.set_placeholder("Type a message…".into());
input.set_max_length(200);

input.insert_text(" there");      // "hi there"
input.delete_char_backward();     // "hi ther"
assert_eq!(input.value(), "hi ther");

For a multi-line editor, see TextareaRenderable.