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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import React from 'react';
import { Box, Text } from 'ink';
import SelectInput, {
type ItemProps as InkSelectItemProps,
type IndicatorProps as InkSelectIndicatorProps,
} from 'ink-select-input';
import { Colors } from '../../colors.js';
/**
* Represents a single option for the RadioButtonSelect.
* Requires a label for display and a value to be returned on selection.
*/
export interface RadioSelectItem<T> {
label: string;
value: T;
}
/**
* Props for the RadioButtonSelect component.
* @template T The type of the value associated with each radio item.
*/
export interface RadioButtonSelectProps<T> {
/** An array of items to display as radio options. */
items: Array<RadioSelectItem<T>>;
/** The initial index selected */
initialIndex?: number;
/** Function called when an item is selected. Receives the `value` of the selected item. */
onSelect: (value: T) => void;
/** Function called when an item is highlighted. Receives the `value` of the selected item. */
onHighlight?: (value: T) => void;
}
/**
* Custom indicator component displaying radio button style (◉/○).
*/
function RadioIndicator({
isSelected = false,
}: InkSelectIndicatorProps): React.JSX.Element {
return (
<Box marginRight={1}>
<Text color={isSelected ? Colors.AccentGreen : Colors.Gray}>
{isSelected ? '◉' : '○'}
</Text>
</Box>
);
}
/**
* Custom item component for displaying the label with appropriate color.
*/
function RadioItem({
isSelected = false,
label,
}: InkSelectItemProps): React.JSX.Element {
return (
<Text color={isSelected ? Colors.AccentGreen : Colors.Gray}>{label}</Text>
);
}
/**
* A specialized SelectInput component styled to look like radio buttons.
* It uses '◉' for selected and '○' for unselected items.
*
* @template T The type of the value associated with each radio item.
*/
export function RadioButtonSelect<T>({
items,
initialIndex,
onSelect,
onHighlight,
}: RadioButtonSelectProps<T>): React.JSX.Element {
const handleSelect = (item: RadioSelectItem<T>) => {
onSelect(item.value);
};
const handleHighlight = (item: RadioSelectItem<T>) => {
if (onHighlight) {
onHighlight(item.value);
}
};
initialIndex = initialIndex ?? 0;
return (
<SelectInput
indicatorComponent={RadioIndicator}
itemComponent={RadioItem}
items={items}
initialIndex={initialIndex}
onSelect={handleSelect}
onHighlight={handleHighlight}
/>
);
}
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