--- /dev/null
+'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;