change_urlbar_text.js

"use strict";

let recorder=require("micropilot").Micropilot("addressbar").start();

let possibles = [
  "where to do today?",
  "search or enter an address",
  "your wish is my command"
];

require('simple-prefs').prefs.logtoconsole=true

const { event } = require("dom-reduce/event")
const { filter, expand, fold } = require("reducers/index")
const { windows, isBrowser } = require("sdk/window/utils")
const { open, close } = require("sdk/window/events");

// All windows presently open & ones that will open in the future.
// Note: Both arrays & streams of events are logical collections
// and reducers there for can concatinate them into another logical
// collection.
let browsers = filter(concat(windows(), open), isBrowser)

// Expand browsers to it's click event & which pairs. Expansion
// is like result of `map`-ing and then `flatten`-ing.
let urlBarClicks = expand(browsers, function(window) {
  let which = Math.floor(Math.random() * possibles.length)
  // I would encapsulate all the mutations in the folds, but
  // as I don't know much about this and weather it's ok to
  // do it it in the fold below, I'm leaving it here.
  window.gURLBar.placeholder = possibles[which]
  // `event` function just does the boileplate of registering
  // listeners and returns stream of dispatched events.
  let clicks = event(window.gURLBar, "click")
  // Note: We probably need:
  // takeUntil(clicks, filter(close, function(x) x === window))
  // So that click handler is automatically removed on window
  // close.
  
  // Pair events with `which`.
  return map(clicks, function(event) [event, which])
})

// Finally consume all the [event, which] paris for all
// browser windows that will ever open.
fold(urlBarClicks, function([event, which]) {
  console.log('clicked!', possibles[which]);
  recorder.record({ ts:Date.now(), msg:'searchbar', txt:possibles[which] })
})