v6

node_modules/prompts/lib/elements/toggle.js

@@ -0,0 +1,114 @@
+const color = require('kleur');
+const Prompt = require('./prompt');
+const { style, clear } = require('../util');
+const { cursor, erase } = require('sisteransi');
+
+/**
+ * TogglePrompt Base Element
+ * @param {Object} opts Options
+ * @param {String} opts.message Message
+ * @param {Boolean} [opts.initial=false] Default value
+ * @param {String} [opts.active='no'] Active label
+ * @param {String} [opts.inactive='off'] Inactive label
+ * @param {Stream} [opts.stdin] The Readable stream to listen to
+ * @param {Stream} [opts.stdout] The Writable stream to write readline data to
+ */
+class TogglePrompt extends Prompt {
+  constructor(opts={}) {
+    super(opts);
+    this.msg = opts.message;
+    this.value = !!opts.initial;
+    this.active = opts.active || 'on';
+    this.inactive = opts.inactive || 'off';
+    this.initialValue = this.value;
+    this.render();
+  }
+
+  reset() {
+    this.value = this.initialValue;
+    this.fire();
+    this.render();
+  }
+
+  abort() {
+    this.done = this.aborted = true;
+    this.fire();
+    this.render();
+    this.out.write('\n');
+    this.close();
+  }
+
+  submit() {
+    this.done = true;
+    this.aborted = false;
+    this.fire();
+    this.render();
+    this.out.write('\n');
+    this.close();
+  }
+
+  deactivate() {
+    if (this.value === false) return this.bell();
+    this.value = false;
+    this.render();
+  }
+
+  activate() {
+    if (this.value === true) return this.bell();
+    this.value = true;
+    this.render();
+  }
+
+  delete() {
+    this.deactivate();
+  }
+  left() {
+    this.deactivate();
+  }
+  right() {
+    this.activate();
+  }
+  down() {
+    this.deactivate();
+  }
+  up() {
+    this.activate();
+  }
+
+  next() {
+    this.value = !this.value;
+    this.fire();
+    this.render();
+  }
+
+  _(c, key) {
+    if (c === ' ') {
+      this.value = !this.value;
+    } else if (c === '1') {
+      this.value = true;
+    } else if (c === '0') {
+      this.value = false;
+    } else return this.bell();
+    this.render();
+  }
+
+  render() {
+    if (this.closed) return;
+    if (this.firstRender) this.out.write(cursor.hide);
+    else this.out.write(clear(this.outputText));
+    super.render();
+
+    this.outputText = [
+      style.symbol(this.done, this.aborted),
+      color.bold(this.msg),
+      style.delimiter(this.done),
+      this.value ? this.inactive : color.cyan().underline(this.inactive),
+      color.gray('/'),
+      this.value ? color.cyan().underline(this.active) : this.active
+    ].join(' ');
+
+    this.out.write(erase.line + cursor.to(0) + this.outputText);
+  }
+}
+
+module.exports = TogglePrompt;