88 lines
2 KiB
JavaScript
88 lines
2 KiB
JavaScript
'use strict';
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const Prompt = require('../prompt');
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const { isPrimitive, hasColor } = require('../utils');
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class BooleanPrompt extends Prompt {
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constructor(options) {
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super(options);
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this.cursorHide();
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}
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async initialize() {
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let initial = await this.resolve(this.initial, this.state);
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this.input = await this.cast(initial);
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await super.initialize();
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}
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dispatch(ch) {
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if (!this.isValue(ch)) return this.alert();
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this.input = ch;
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return this.submit();
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}
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format(value) {
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let { styles, state } = this;
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return !state.submitted ? styles.primary(value) : styles.success(value);
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}
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cast(input) {
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return this.isTrue(input);
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}
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isTrue(input) {
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return /^[ty1]/i.test(input);
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}
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isFalse(input) {
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return /^[fn0]/i.test(input);
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}
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isValue(value) {
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return isPrimitive(value) && (this.isTrue(value) || this.isFalse(value));
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}
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async hint() {
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if (this.state.status === 'pending') {
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let hint = await this.element('hint');
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if (!hasColor(hint)) {
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return this.styles.muted(hint);
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}
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return hint;
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}
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}
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async render() {
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let { input, size } = this.state;
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let prefix = await this.prefix();
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let sep = await this.separator();
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let msg = await this.message();
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let hint = this.styles.muted(this.default);
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let promptLine = [prefix, msg, hint, sep].filter(Boolean).join(' ');
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this.state.prompt = promptLine;
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let header = await this.header();
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let value = this.value = this.cast(input);
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let output = await this.format(value);
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let help = (await this.error()) || (await this.hint());
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let footer = await this.footer();
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if (help && !promptLine.includes(help)) output += ' ' + help;
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promptLine += ' ' + output;
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this.clear(size);
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this.write([header, promptLine, footer].filter(Boolean).join('\n'));
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this.restore();
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}
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set value(value) {
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super.value = value;
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}
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get value() {
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return this.cast(super.value);
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}
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}
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module.exports = BooleanPrompt;
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