components.InputBox wraps a Bubble Tea textarea with the TUI’s ▌ prompt rail. It has no character limit, no line numbers, and no > prompt. The editor grows with visual rows between a configurable minimum and maximum, so a wrapped long line counts toward its visible height just like a multi-line value.

Constructor

box := components.NewInputBox()
box.Resize(80)
box.SetValue("Summarize the current turn")

fmt.Println(box.Value())
fmt.Println(box.Height())
fmt.Println(box.View())

NewInputBox returns a focused value. Call Focus when the host creates or reactivates it, and pass Bubble Tea messages to Update. Reset clears the current value without replacing the widget.

Editing

Enter remains available to the host as the submit action. Literal newlines use Shift+Enter when the terminal reports Kitty keyboard enhancements and Ctrl+J as a universal fallback. That split is intentional: the TUI can submit on plain Enter while still allowing multi-line prompts.

cmd := box.Focus()
_ = cmd // return this command from a Bubble Tea Init or focus handler

cmd = box.Update(msg)
_ = cmd // return the textarea command from Update
if strings.TrimSpace(box.Value()) != "" {
	// The host decides when the value becomes a content.Block slice.
	box.Reset()
}

Sizing and rendering

Resize(width) subtracts the left rail and padding before sizing the inner textarea. SetMinLines changes the visible lower bound. SetVerticalPadding adds rows above and below the text without changing the editor’s auto-grow range. SetBackground enables the modern full-width panel fill and reopens the background after internal ANSI resets. The default widget remains the lightweight scrollback composer.

The View result is a string. It can be embedded in a tea.View or composed with the screen’s layout. The widget does not decide submission, slash dispatch, or which loop receives a prompt.

Source

InputBox implementation

Constructor

Editing

Sizing and rendering

Source

Proof