mirror of
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134 lines
3.6 KiB
TypeScript
134 lines
3.6 KiB
TypeScript
// Loaded from https://deno.land/x/cliffy@v0.18.0/prompt/select.ts
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import { blue, underline } from "./deps.ts";
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import { Figures } from "./figures.ts";
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import {
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GenericList,
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GenericListKeys,
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GenericListOption,
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GenericListOptions,
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GenericListOptionSettings,
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GenericListSettings,
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} from "./_generic_list.ts";
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import { GenericPrompt } from "./_generic_prompt.ts";
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/** Select key options. */
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export type SelectKeys = GenericListKeys;
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/** Select option options. */
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export type SelectOption = GenericListOption;
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/** Select option settings. */
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export type SelectOptionSettings = GenericListOptionSettings;
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/** Select options type. */
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export type SelectValueOptions = (string | SelectOption)[];
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/** Select option settings type. */
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export type SelectValueSettings = SelectOptionSettings[];
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/** Select prompt options. */
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export interface SelectOptions extends GenericListOptions<string, string> {
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options: SelectValueOptions;
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keys?: SelectKeys;
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}
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/** Select prompt settings. */
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export interface SelectSettings extends GenericListSettings<string, string> {
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options: SelectValueSettings;
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keys?: SelectKeys;
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}
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/** Select prompt representation. */
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export class Select<S extends SelectSettings = SelectSettings>
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extends GenericList<string, string, S> {
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protected listIndex: number = this.getListIndex(this.settings.default);
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/**
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* Inject prompt value. Can be used for unit tests or pre selections.
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* @param value Input value.
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*/
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public static inject(value: string): void {
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GenericPrompt.inject(value);
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}
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/** Execute the prompt and show cursor on end. */
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public static prompt(options: SelectOptions): Promise<string> {
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return new this({
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pointer: blue(Figures.POINTER_SMALL),
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indent: " ",
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listPointer: blue(Figures.POINTER),
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maxRows: 10,
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searchLabel: blue(Figures.SEARCH),
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...options,
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options: Select.mapOptions(options),
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}).prompt();
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}
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protected static mapOptions(options: SelectOptions): SelectValueSettings {
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return options.options
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.map((item: string | SelectOption) =>
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typeof item === "string" ? { value: item } : item
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)
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.map((item) => this.mapOption(item));
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}
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protected input(): string {
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return underline(blue(this.inputValue));
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}
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/**
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* Render select option.
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* @param item Select option settings.
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* @param isSelected Set to true if option is selected.
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*/
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protected getListItem(
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item: SelectOptionSettings,
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isSelected?: boolean,
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): string {
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let line = this.settings.indent;
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line += isSelected ? `${this.settings.listPointer} ` : " ";
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line += `${
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isSelected
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? this.highlight(item.name, (val) => val)
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: this.highlight(item.name)
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}`;
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return line;
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}
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/** Get value of selected option. */
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protected getValue(): string {
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return this.options[this.listIndex]?.value ?? this.settings.default;
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}
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/**
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* Validate input value.
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* @param value User input value.
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* @return True on success, false or error message on error.
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*/
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protected validate(value: string): boolean | string {
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return typeof value === "string" &&
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value.length > 0 &&
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this.options.findIndex((option: SelectOptionSettings) =>
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option.value === value
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) !== -1;
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}
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/**
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* Map input value to output value.
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* @param value Input value.
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* @return Output value.
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*/
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protected transform(value: string): string {
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return value.trim();
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}
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/**
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* Format output value.
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* @param value Output value.
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*/
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protected format(value: string): string {
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return this.getOptionByValue(value)?.name ?? value;
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}
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}
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