MediaWiki:Gadget-intuition.js

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/**
 * From https://intuition.toolforge.org/load.php?env=mw
 */
/* global mw, $ */
(function () {
  var intuition;
  var userlang;
  var queueTimeout;
  var queueDeferred;
  var apiPath = "https://intuition.toolforge.org/api.php";
  var queueList = [];
  var requested = {};
  var hasOwn = requested.hasOwnProperty;
  var push = queueList.push;
  var slice = queueList.slice;
  var mwMsgPrefix = 'intuition-';

  function handleQueue () {
    var list = queueList.splice(0, queueList.length);
    var deferred = queueDeferred;

    queueDeferred = queueTimeout = undefined;

    $.ajax({
      url: apiPath,
      data: {
        domains: list.sort().join('|'),
        userlang: userlang
      },
      dataType: $.support.cors ? 'json' : 'jsonp'
    }).fail(deferred.reject).done(function (data) {
      if (!data || !data.messages) {
        return deferred.reject();
      }
      $.each(data.messages, intuition.put);
      deferred.resolve();
    });
  }

  intuition = {
    /**
     * @param {string|Array} domains
     * @param {string} [lang=wgUserLanguage] Only one language is supported. Last one wins.
     * @return {jQuery.Promise}
     */
    load: function (domains, lang) {
      var i;
      var list = [];

      domains = typeof domains === 'string' ? [domains] : domains;

      for (i = 0; i < domains.length; i++) {
        if (!hasOwn.call(requested, domains[i])) {
          requested[domains[i]] = true;
          list.push(domains[i]);
        }
      }

      if (!list.length) {
        return $.Deferred().resolve();
      }

      // Defer request so we can perform them in batches
      userlang = lang || mw.config.get('wgUserLanguage', 'en');
      push.apply(queueList, list);

      if (!queueDeferred) {
        queueDeferred = $.Deferred();
      }

      if (queueTimeout) {
        clearTimeout(queueTimeout);
      }
      queueTimeout = setTimeout(handleQueue, 100);

      return queueDeferred.promise();
    },

    put: function (domain, msgs) {
      requested[domain] = true;
      if (msgs) {
        $.each(msgs, function (key, val) {
          mw.messages.set(mwMsgPrefix + domain + '-' + key, val);
        });
      }
    },

    /**
     * @param {string} domain
     * @param {string} key
     * @param {Mixed...} [parameters]
     * @return {string}
     */
    msg: function (domain, key) {
      var args = slice.call(arguments, 2);
      args.unshift(mwMsgPrefix + domain + '-' + key);
      return mw.message.apply(mw.message, args).toString();
    },

    /**
     * @param {string} domain
     * @param {string} key
     * @param {Mixed...} [parameters]
     * @return {mw.Message}
     */
    message: function (domain, key) {
      var args = slice.call(arguments, 2);
      args.unshift(mwMsgPrefix + domain + '-' + key);
      return mw.message.apply(mw.message, args);
    }
  };

  // Expose
  mw.libs.intuition = intuition;
}());