diff options
Diffstat (limited to 'node_modules/prompts/dist/elements/multiselect.js')
| -rw-r--r-- | node_modules/prompts/dist/elements/multiselect.js | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/node_modules/prompts/dist/elements/multiselect.js b/node_modules/prompts/dist/elements/multiselect.js new file mode 100644 index 0000000..2d129ea --- /dev/null +++ b/node_modules/prompts/dist/elements/multiselect.js @@ -0,0 +1,289 @@ +'use strict'; + +const color = require('kleur'); + +const _require = require('sisteransi'), + cursor = _require.cursor; + +const Prompt = require('./prompt'); + +const _require2 = require('../util'), + clear = _require2.clear, + figures = _require2.figures, + style = _require2.style, + wrap = _require2.wrap, + entriesToDisplay = _require2.entriesToDisplay; +/** + * MultiselectPrompt Base Element + * @param {Object} opts Options + * @param {String} opts.message Message + * @param {Array} opts.choices Array of choice objects + * @param {String} [opts.hint] Hint to display + * @param {String} [opts.warn] Hint shown for disabled choices + * @param {Number} [opts.max] Max choices + * @param {Number} [opts.cursor=0] Cursor start position + * @param {Number} [opts.optionsPerPage=10] Max options to display at once + * @param {Stream} [opts.stdin] The Readable stream to listen to + * @param {Stream} [opts.stdout] The Writable stream to write readline data to + */ + + +class MultiselectPrompt extends Prompt { + constructor(opts = {}) { + super(opts); + this.msg = opts.message; + this.cursor = opts.cursor || 0; + this.scrollIndex = opts.cursor || 0; + this.hint = opts.hint || ''; + this.warn = opts.warn || '- This option is disabled -'; + this.minSelected = opts.min; + this.showMinError = false; + this.maxChoices = opts.max; + this.instructions = opts.instructions; + this.optionsPerPage = opts.optionsPerPage || 10; + this.value = opts.choices.map((ch, idx) => { + if (typeof ch === 'string') ch = { + title: ch, + value: idx + }; + return { + title: ch && (ch.title || ch.value || ch), + description: ch && ch.description, + value: ch && (ch.value === undefined ? idx : ch.value), + selected: ch && ch.selected, + disabled: ch && ch.disabled + }; + }); + this.clear = clear('', this.out.columns); + + if (!opts.overrideRender) { + this.render(); + } + } + + reset() { + this.value.map(v => !v.selected); + this.cursor = 0; + this.fire(); + this.render(); + } + + selected() { + return this.value.filter(v => v.selected); + } + + exit() { + this.abort(); + } + + abort() { + this.done = this.aborted = true; + this.fire(); + this.render(); + this.out.write('\n'); + this.close(); + } + + submit() { + const selected = this.value.filter(e => e.selected); + + if (this.minSelected && selected.length < this.minSelected) { + this.showMinError = true; + this.render(); + } else { + this.done = true; + this.aborted = false; + this.fire(); + this.render(); + this.out.write('\n'); + this.close(); + } + } + + first() { + this.cursor = 0; + this.render(); + } + + last() { + this.cursor = this.value.length - 1; + this.render(); + } + + next() { + this.cursor = (this.cursor + 1) % this.value.length; + this.render(); + } + + up() { + if (this.cursor === 0) { + this.cursor = this.value.length - 1; + } else { + this.cursor--; + } + + this.render(); + } + + down() { + if (this.cursor === this.value.length - 1) { + this.cursor = 0; + } else { + this.cursor++; + } + + this.render(); + } + + left() { + this.value[this.cursor].selected = false; + this.render(); + } + + right() { + if (this.value.filter(e => e.selected).length >= this.maxChoices) return this.bell(); + this.value[this.cursor].selected = true; + this.render(); + } + + handleSpaceToggle() { + const v = this.value[this.cursor]; + + if (v.selected) { + v.selected = false; + this.render(); + } else if (v.disabled || this.value.filter(e => e.selected).length >= this.maxChoices) { + return this.bell(); + } else { + v.selected = true; + this.render(); + } + } + + toggleAll() { + if (this.maxChoices !== undefined || this.value[this.cursor].disabled) { + return this.bell(); + } + + const newSelected = !this.value[this.cursor].selected; + this.value.filter(v => !v.disabled).forEach(v => v.selected = newSelected); + this.render(); + } + + _(c, key) { + if (c === ' ') { + this.handleSpaceToggle(); + } else if (c === 'a') { + this.toggleAll(); + } else { + return this.bell(); + } + } + + renderInstructions() { + if (this.instructions === undefined || this.instructions) { + if (typeof this.instructions === 'string') { + return this.instructions; + } + + return '\nInstructions:\n' + ` ${figures.arrowUp}/${figures.arrowDown}: Highlight option\n` + ` ${figures.arrowLeft}/${figures.arrowRight}/[space]: Toggle selection\n` + (this.maxChoices === undefined ? ` a: Toggle all\n` : '') + ` enter/return: Complete answer`; + } + + return ''; + } + + renderOption(cursor, v, i, arrowIndicator) { + const prefix = (v.selected ? color.green(figures.radioOn) : figures.radioOff) + ' ' + arrowIndicator + ' '; + let title, desc; + + if (v.disabled) { + title = cursor === i ? color.gray().underline(v.title) : color.strikethrough().gray(v.title); + } else { + title = cursor === i ? color.cyan().underline(v.title) : v.title; + + if (cursor === i && v.description) { + desc = ` - ${v.description}`; + + if (prefix.length + title.length + desc.length >= this.out.columns || v.description.split(/\r?\n/).length > 1) { + desc = '\n' + wrap(v.description, { + margin: prefix.length, + width: this.out.columns + }); + } + } + } + + return prefix + title + color.gray(desc || ''); + } // shared with autocompleteMultiselect + + + paginateOptions(options) { + if (options.length === 0) { + return color.red('No matches for this query.'); + } + + let _entriesToDisplay = entriesToDisplay(this.cursor, options.length, this.optionsPerPage), + startIndex = _entriesToDisplay.startIndex, + endIndex = _entriesToDisplay.endIndex; + + let prefix, + styledOptions = []; + + for (let i = startIndex; i < endIndex; i++) { + if (i === startIndex && startIndex > 0) { + prefix = figures.arrowUp; + } else if (i === endIndex - 1 && endIndex < options.length) { + prefix = figures.arrowDown; + } else { + prefix = ' '; + } + + styledOptions.push(this.renderOption(this.cursor, options[i], i, prefix)); + } + + return '\n' + styledOptions.join('\n'); + } // shared with autocomleteMultiselect + + + renderOptions(options) { + if (!this.done) { + return this.paginateOptions(options); + } + + return ''; + } + + renderDoneOrInstructions() { + if (this.done) { + return this.value.filter(e => e.selected).map(v => v.title).join(', '); + } + + const output = [color.gray(this.hint), this.renderInstructions()]; + + if (this.value[this.cursor].disabled) { + output.push(color.yellow(this.warn)); + } + + return output.join(' '); + } + + render() { + if (this.closed) return; + if (this.firstRender) this.out.write(cursor.hide); + super.render(); // print prompt + + let prompt = [style.symbol(this.done, this.aborted), color.bold(this.msg), style.delimiter(false), this.renderDoneOrInstructions()].join(' '); + + if (this.showMinError) { + prompt += color.red(`You must select a minimum of ${this.minSelected} choices.`); + this.showMinError = false; + } + + prompt += this.renderOptions(this.value); + this.out.write(this.clear + prompt); + this.clear = clear(prompt, this.out.columns); + } + +} + +module.exports = MultiselectPrompt;
\ No newline at end of file |