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Editing: input.js

'use strict';

const Prompt = require('../types/string');
const completer = require('../completer');

class Input extends Prompt {
  constructor(options) {
    super(options);
    let history = this.options.history;
    if (history && history.store) {
      let initial = history.values || this.initial;
      this.autosave = !!history.autosave;
      this.store = history.store;
      this.data = this.store.get('values') || { past: [], present: initial };
      this.initial = this.data.present || this.data.past[this.data.past.length - 1];
    }
  }

completion(action) {
    if (!this.store) return this.alert();
    this.data = completer(action, this.data, this.input);
    if (!this.data.present) return this.alert();
    this.input = this.data.present;
    this.cursor = this.input.length;
    return this.render();
  }

altUp() {
    return this.completion('prev');
  }

altDown() {
    return this.completion('next');
  }

prev() {
    this.save();
    return super.prev();
  }

save() {
    if (!this.store) return;
    this.data = completer('save', this.data, this.input);
    this.store.set('values', this.data);
  }

submit() {
    if (this.store && this.autosave === true) {
      this.save();
    }
    return super.submit();
  }
}

module.exports = Input;

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