Current Dev State

static/js/ketcher2/node_modules/inquirer/lib/ui/bottom-bar.js

@@ -0,0 +1,98 @@
+/**
+ * Sticky bottom bar user interface
+ */
+
+var util = require("util");
+var through = require("through");
+var Base = require("./baseUI");
+var rlUtils = require("../utils/readline");
+var _ = require("lodash");
+
+
+/**
+ * Module exports
+ */
+
+module.exports = Prompt;
+
+/**
+ * Constructor
+ */
+
+function Prompt( opt ) {
+  opt || (opt = {});
+
+  Base.apply( this, arguments );
+
+  this.log = through( this.writeLog.bind(this) );
+  this.bottomBar = opt.bottomBar || "";
+  this.render();
+}
+util.inherits( Prompt, Base );
+
+
+/**
+ * Render the prompt to screen
+ * @return {Prompt} self
+ */
+
+Prompt.prototype.render = function() {
+  this.write(this.bottomBar);
+  return this;
+};
+
+
+/**
+ * Update the bottom bar content and rerender
+ * @param  {String} bottomBar Bottom bar content
+ * @return {Prompt}           self
+ */
+
+Prompt.prototype.updateBottomBar = function( bottomBar ) {
+  this.bottomBar = bottomBar;
+  rlUtils.clearLine(this.rl, 1);
+  return this.render();
+};
+
+
+/**
+ * Rerender the prompt
+ * @return {Prompt} self
+ */
+
+Prompt.prototype.writeLog = function( data ) {
+  rlUtils.clearLine(this.rl, 1);
+  this.rl.output.write(this.enforceLF(data.toString()));
+  return this.render();
+};
+
+
+/**
+ * Make sure line end on a line feed
+ * @param  {String} str Input string
+ * @return {String}     The input string with a final line feed
+ */
+
+Prompt.prototype.enforceLF = function( str ) {
+  return str.match(/[\r\n]$/) ? str : str + "\n";
+};
+
+/**
+ * Helper for writing message in Prompt
+ * @param {Prompt} prompt  - The Prompt object that extends tty
+ * @param {String} message - The message to be output
+ */
+Prompt.prototype.write = function (message) {
+  var msgLines = message.split(/\n/);
+  this.height = msgLines.length;
+
+  // Write message to screen and setPrompt to control backspace
+  this.rl.setPrompt( _.last(msgLines) );
+
+  if ( this.rl.output.rows === 0 && this.rl.output.columns === 0 ) {
+    /* When it's a tty through serial port there's no terminal info and the render will malfunction,
+       so we need enforce the cursor to locate to the leftmost position for rendering. */
+    rlUtils.left( this.rl, message.length + this.rl.line.length );
+  }
+  this.rl.output.write( message );
+};