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Diffstat (limited to 'node_modules/prompts/lib/elements/text.js')
| -rw-r--r-- | node_modules/prompts/lib/elements/text.js | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/node_modules/prompts/lib/elements/text.js b/node_modules/prompts/lib/elements/text.js new file mode 100644 index 0000000..ee78181 --- /dev/null +++ b/node_modules/prompts/lib/elements/text.js @@ -0,0 +1,208 @@ +const color = require('kleur'); +const Prompt = require('./prompt'); +const { erase, cursor } = require('sisteransi'); +const { style, clear, lines, figures } = require('../util'); + +/** + * TextPrompt Base Element + * @param {Object} opts Options + * @param {String} opts.message Message + * @param {String} [opts.style='default'] Render style + * @param {String} [opts.initial] Default value + * @param {Function} [opts.validate] Validate function + * @param {Stream} [opts.stdin] The Readable stream to listen to + * @param {Stream} [opts.stdout] The Writable stream to write readline data to + * @param {String} [opts.error] The invalid error label + */ +class TextPrompt extends Prompt { + constructor(opts={}) { + super(opts); + this.transform = style.render(opts.style); + this.scale = this.transform.scale; + this.msg = opts.message; + this.initial = opts.initial || ``; + this.validator = opts.validate || (() => true); + this.value = ``; + this.errorMsg = opts.error || `Please Enter A Valid Value`; + this.cursor = Number(!!this.initial); + this.cursorOffset = 0; + this.clear = clear(``, this.out.columns); + this.render(); + } + + set value(v) { + if (!v && this.initial) { + this.placeholder = true; + this.rendered = color.gray(this.transform.render(this.initial)); + } else { + this.placeholder = false; + this.rendered = this.transform.render(v); + } + this._value = v; + this.fire(); + } + + get value() { + return this._value; + } + + reset() { + this.value = ``; + this.cursor = Number(!!this.initial); + this.cursorOffset = 0; + this.fire(); + this.render(); + } + + exit() { + this.abort(); + } + + abort() { + this.value = this.value || this.initial; + this.done = this.aborted = true; + this.error = false; + this.red = false; + this.fire(); + this.render(); + this.out.write('\n'); + this.close(); + } + + async validate() { + let valid = await this.validator(this.value); + if (typeof valid === `string`) { + this.errorMsg = valid; + valid = false; + } + this.error = !valid; + } + + async submit() { + this.value = this.value || this.initial; + this.cursorOffset = 0; + this.cursor = this.rendered.length; + await this.validate(); + if (this.error) { + this.red = true; + this.fire(); + this.render(); + return; + } + this.done = true; + this.aborted = false; + this.fire(); + this.render(); + this.out.write('\n'); + this.close(); + } + + next() { + if (!this.placeholder) return this.bell(); + this.value = this.initial; + this.cursor = this.rendered.length; + this.fire(); + this.render(); + } + + moveCursor(n) { + if (this.placeholder) return; + this.cursor = this.cursor+n; + this.cursorOffset += n; + } + + _(c, key) { + let s1 = this.value.slice(0, this.cursor); + let s2 = this.value.slice(this.cursor); + this.value = `${s1}${c}${s2}`; + this.red = false; + this.cursor = this.placeholder ? 0 : s1.length+1; + this.render(); + } + + delete() { + if (this.isCursorAtStart()) return this.bell(); + let s1 = this.value.slice(0, this.cursor-1); + let s2 = this.value.slice(this.cursor); + this.value = `${s1}${s2}`; + this.red = false; + if (this.isCursorAtStart()) { + this.cursorOffset = 0 + } else { + this.cursorOffset++; + this.moveCursor(-1); + } + this.render(); + } + + deleteForward() { + if(this.cursor*this.scale >= this.rendered.length || this.placeholder) return this.bell(); + let s1 = this.value.slice(0, this.cursor); + let s2 = this.value.slice(this.cursor+1); + this.value = `${s1}${s2}`; + this.red = false; + if (this.isCursorAtEnd()) { + this.cursorOffset = 0; + } else { + this.cursorOffset++; + } + this.render(); + } + + first() { + this.cursor = 0; + this.render(); + } + + last() { + this.cursor = this.value.length; + this.render(); + } + + left() { + if (this.cursor <= 0 || this.placeholder) return this.bell(); + this.moveCursor(-1); + this.render(); + } + + right() { + if (this.cursor*this.scale >= this.rendered.length || this.placeholder) return this.bell(); + this.moveCursor(1); + this.render(); + } + + isCursorAtStart() { + return this.cursor === 0 || (this.placeholder && this.cursor === 1); + } + + isCursorAtEnd() { + return this.cursor === this.rendered.length || (this.placeholder && this.cursor === this.rendered.length + 1) + } + + render() { + if (this.closed) return; + if (!this.firstRender) { + if (this.outputError) + this.out.write(cursor.down(lines(this.outputError, this.out.columns) - 1) + clear(this.outputError, this.out.columns)); + this.out.write(clear(this.outputText, this.out.columns)); + } + super.render(); + this.outputError = ''; + + this.outputText = [ + style.symbol(this.done, this.aborted), + color.bold(this.msg), + style.delimiter(this.done), + this.red ? color.red(this.rendered) : this.rendered + ].join(` `); + + if (this.error) { + this.outputError += this.errorMsg.split(`\n`) + .reduce((a, l, i) => a + `\n${i ? ' ' : figures.pointerSmall} ${color.red().italic(l)}`, ``); + } + + this.out.write(erase.line + cursor.to(0) + this.outputText + cursor.save + this.outputError + cursor.restore + cursor.move(this.cursorOffset, 0)); + } +} + +module.exports = TextPrompt;
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