MediaWiki:Gadget-CommentsInLocalTime.js

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// Generated by CoffeeScript 1.8.0

/**
 * COMMENTS IN LOCAL TIME
 *
 * Description:
 * Changes [[Coordinated Universal Time|UTC]]-based times and dates,
 * such as those used in signatures, to be relative to local time.
 *
 * Documentation:
 * [[Wikipedia:Comments in Local Time]]
 */
var CommentsInLocalTime, runScript;

CommentsInLocalTime = (function() {
  var LocalComments, language;

  function CommentsInLocalTime() {}

  language = '';

  LocalComments = {};

  CommentsInLocalTime.settings = function() {
    if (window.LocalComments != null) {
      LocalComments = window.LocalComments;
    }

    /*
      Language
    
      LOCALIZING THIS SCRIPT
      To localize this script, change the terms below,
      to the RIGHT of the colons, to the correct term used in that language.
    
      For example, in the French language,
    
      'Today' : 'Today',
    
      would be
    
      'Today' : "Aujourd'hui",
     */
    return LocalComments.language = {

      /* relative terms */
      'Today': 'Today',
      'Yesterday': 'Yesterday',
      'Tomorrow': 'Tomorrow',
      'last': 'last',
      'this': 'this',

      /* days of the week */
      'Sunday': 'Sunday',
      'Monday': 'Monday',
      'Tuesday': 'Tuesday',
      'Wednesday': 'Wednesday',
      'Thursday': 'Thursday',
      'Friday': 'Friday',
      'Saturday': 'Saturday',

      /* months of the year */
      'January': 'January',
      'February': 'February',
      'March': 'March',
      'April': 'April',
      'May': 'May',
      'June': 'June',
      'July': 'July',
      'August': 'August',
      'September': 'September',
      'October': 'October',
      'November': 'November',
      'December': 'December',

      /* difference words */
      'ago': 'ago',
      'from now': 'from now',

      /* date phrases */
      'year': 'year',
      'years': 'years',
      'month': 'month',
      'months': 'months',
      'day': 'day',
      'days': 'days'
    };
  };


  /*
    APPLICATION
   */

  CommentsInLocalTime.init = function() {

    /*
      Settings
     */
    var contentText, namespace, pageAction;
    this.settings();
    if (LocalComments.language == null) {
      return false;
    }
    language = this.setDefaultSetting('language', LocalComments.language);
    this.setDefaultSetting({
      'dateDifference': true,
      'dateFormat': 'dmy',
      'dayOfWeek': true,
      'dropDays': 0,
      'dropMonths': 0,
      'timeFirst': true,
      'twentyFourHours': false
    });

    /*
      End Settings
     */
    if (mw.config.get('wgCanonicalNamespace') == '' || mw.config.get('wgCanonicalNamespace') == 'MediaWiki' || mw.config.get('wgCanonicalNamespace') == 'Special')
      return;

    var disabled_urls = new Array('action=history'), unique_url = false, wikiPreview = new Array('action=edit', 'action=submit');
    for (var i = 0; i < disabled_urls.length; i++)
    {
      if (document.location.href.indexOf(disabled_urls[i]) != -1)
        return;
    }

    for (var i = 0; i < wikiPreview.length; i++)
    {
      if (document.location.href.indexOf(wikiPreview[i]) != -1)
        unique_url = 'wikiPreview';
    }

    var element_id = unique_url ? unique_url : 'bodyContent';
    contentText = document.getElementById(element_id);
    return this.replaceText(contentText, /(\d{1,2}):(\d{2}), (\d{1,2}) ([A-Z][a-z]+) (\d{4}) \(UTC\)/);
  };

  CommentsInLocalTime.replaceText = function(node, search) {
    var after, afterMatch, before, beforeMatch, child, children, length, match, matches, parent, parentNodeName, position, span, timeArray, timestamp, value, _i, _len, _results;
    if (!node) {
      return false;
    }
    if (node.nodeType === 3) {
      parent = node.parentNode;
      parentNodeName = parent.nodeName;
      if (['CODE', 'PRE'].indexOf(parentNodeName) > -1) {
        return false;
      }
      value = node.nodeValue;
      matches = value.match(search);
      if (matches != null) {
        match = matches[0];
        position = value.search(search);
        length = match.toString().length;
        beforeMatch = value.substring(0, position);
        afterMatch = value.substring(position + length);
        timeArray = this.adjustTime(match.toString(), search);
        timestamp = timeArray[1] ? timeArray[1].getTime() : '';
        span = document.createElement('span');
        span.className = 'localcomments';
        span.style.fontSize = '95%';
        span.style.whiteSpace = 'nowrap';
        span.setAttribute('timestamp', timestamp);
        span.title = match;
        span.appendChild(document.createTextNode(timeArray[0]));
        parent = node.parentNode;
        parent.replaceChild(span, node);
        before = document.createElement('span');
        before.className = 'before-localcomments';
        before.appendChild(document.createTextNode(beforeMatch));
        after = document.createElement('span');
        after.className = 'after-localcomments';
        after.appendChild(document.createTextNode(afterMatch));
        parent.insertBefore(before, span);
        return parent.insertBefore(after, span.nextSibling);
      }
    } else {
      children = [];
      child = node.childNodes[0];
      while (child) {
        children.push(child);
        child = child.nextSibling;
      }
      _results = [];
      for (_i = 0, _len = children.length; _i < _len; _i++) {
        child = children[_i];
        _results.push(this.replaceText(child, search));
      }
      return _results;
    }
  };

  CommentsInLocalTime.adjustTime = function(originalTimestamp, search) {
    var ampm, date, day, dayNames, dayOfTheWeek, descriptiveDifference, finalTime, formattedDate, formattedDayOfTheWeek, hour, last, minute, month, monthName, oldDay, oldHour, oldMinute, oldMonth, oldYear, returnDate, time, today, tomorrow, utcOffset, year, yesterday, _ref, _ref1;
    time = originalTimestamp.match(search);
    _ref = [time[1], time[2], time[3], time[4], time[5]], oldHour = _ref[0], oldMinute = _ref[1], oldDay = _ref[2], oldMonth = _ref[3], oldYear = _ref[4];
    today = new Date();
    yesterday = new Date();
    tomorrow = new Date();
    yesterday.setDate(yesterday.getDate() - 1);
    tomorrow.setDate(tomorrow.getDate() + 1);
    time = new Date();
    time.setUTCFullYear(oldYear, this.convertMonthToNumber(oldMonth), oldDay);
    time.setUTCHours(oldHour);
    time.setUTCMinutes(oldMinute);
    if (isNaN(time)) {
      return [originalTimestamp, ''];
    }
    utcOffset = -1 * time.getTimezoneOffset() / 60;
    utcOffset = utcOffset >= 0 ? '+' + utcOffset : '−' + Math.abs(utcOffset);
    year = time.getFullYear();
    month = this.addLeadingZero(time.getMonth() + 1);
    day = time.getDate();
    hour = parseInt(time.getHours());
    minute = this.addLeadingZero(time.getMinutes());
    ampm = '';
    if (LocalComments.twentyFourHours) {
      hour = this.addLeadingZero(hour);
    } else {
      ampm = hour <= 11 ? ' am' : ' pm';
      if (hour > 12) {
        hour -= 12;
      } else if (hour === 0) {
        hour = 12;
      }
    }
    if (year === today.getFullYear() && month === this.addLeadingZero(today.getMonth() + 1) && day === today.getDate()) {
      date = language['Today'];
    } else if (year === yesterday.getFullYear() && month === this.addLeadingZero(yesterday.getMonth() + 1) && day === yesterday.getDate()) {
      date = language['Yesterday'];
    } else if (year === tomorrow.getFullYear() && month === this.addLeadingZero(tomorrow.getMonth() + 1) && day === tomorrow.getDate()) {
      date = language['Tomorrow'];
    } else {
      dayNames = [language['Sunday'], language['Monday'], language['Tuesday'], language['Wednesday'], language['Thursday'], language['Friday'], language['Saturday']];
      dayOfTheWeek = dayNames[time.getDay()];
      descriptiveDifference = '';
      last = '';
      if (LocalComments.dateDifference) {
        _ref1 = this.createRelativeDate(today, time), descriptiveDifference = _ref1.descriptiveDifference, last = _ref1.last;
      }
      formattedDate = '';
      monthName = this.convertNumberToMonth(time.getMonth());
      formattedDate = (function() {
        switch (LocalComments.dateFormat.toLowerCase()) {
          case 'dmy':
            return day + ' ' + monthName + ' ' + year;
          case 'mdy':
            return monthName + ' ' + day + ', ' + year;
          default:
            return year + '-' + month + '-' + this.addLeadingZero(day);
        }
      }).call(this);
      formattedDayOfTheWeek = '';
      if (LocalComments.dayOfWeek) {
        formattedDayOfTheWeek = ', ' + last + dayOfTheWeek;
      }
      date = formattedDate + formattedDayOfTheWeek + descriptiveDifference;
    }
    finalTime = hour + ':' + minute + ampm;
    if (LocalComments.timeFirst) {
      returnDate = finalTime + ', ' + date + ' (UTC' + utcOffset + ')';
    } else {
      returnDate = date + ', ' + finalTime + ' (UTC' + utcOffset + ')';
    }
    return [returnDate, time];
  };

  CommentsInLocalTime.createRelativeDate = function(today, time) {
    var daysAgo, descriptiveParts, differenceWord, fmtDays, fmtMonths, fmtYears, last, millisecondsAgo, monthsAgo, totalMonthsAgo, yearsAgo;
    millisecondsAgo = today.getTime() - time.getTime();
    daysAgo = Math.abs(Math.round(millisecondsAgo / 1000 / 60 / 60 / 24));
    differenceWord = '';
    last = '';
    if (millisecondsAgo >= 0) {
      differenceWord = language['ago'];
      if (daysAgo <= 7) {
        last = language['last'] + ' ';
      }
    } else {
      differenceWord = language['from now'];
      if (daysAgo <= 7) {
        last = language['this'] + ' ';
      }
    }
    monthsAgo = Math.floor(daysAgo / 365 * 12);
    totalMonthsAgo = monthsAgo;
    yearsAgo = Math.floor(monthsAgo / 12);
    if (monthsAgo < LocalComments.dropMonths) {
      yearsAgo = 0;
    } else if (LocalComments.dropMonths > 0) {
      monthsAgo = 0;
    } else {
      monthsAgo = monthsAgo - yearsAgo * 12;
    }
    if (daysAgo < LocalComments.dropDays) {
      monthsAgo = 0;
      yearsAgo = 0;
    } else if (LocalComments.dropDays > 0) {
      daysAgo = 0;
    } else {
      daysAgo = daysAgo - Math.floor(totalMonthsAgo * 365 / 12);
    }
    descriptiveParts = [];
    if (yearsAgo > 0) {
      fmtYears = yearsAgo + ' ' + this.pluralize(language['year'], yearsAgo, language['years']);
      descriptiveParts.push(fmtYears);
    }
    if (monthsAgo > 0) {
      fmtMonths = monthsAgo + ' ' + this.pluralize(language['month'], monthsAgo, language['months']);
      descriptiveParts.push(fmtMonths);
    }
    if (daysAgo > 0) {
      fmtDays = daysAgo + ' ' + this.pluralize(language['day'], daysAgo, language['days']);
      descriptiveParts.push(fmtDays);
    }
    return {
      descriptiveDifference: ' (' + descriptiveParts.join(', ') + ' ' + differenceWord + ')',
      last: last
    };
  };


  /*
    HELPERS
   */

  CommentsInLocalTime.addLeadingZero = function(number) {
    if (number < 10) {
      number = '0' + number;
    }
    return number;
  };

  CommentsInLocalTime.convertMonthToNumber = function(month) {
    return (new Date(month + ' 1, 2001')).getMonth();
  };

  CommentsInLocalTime.convertNumberToMonth = function(number) {
    return [language['January'], language['February'], language['March'], language['April'], language['May'], language['June'], language['July'], language['August'], language['September'], language['October'], language['November'], language['December']][number];
  };

  CommentsInLocalTime.pluralize = function(term, count, plural) {
    if (plural === null) {
      plural = term + 's';
    }
    if (count === 1) {
      return term;
    } else {
      return plural;
    }
  };

  CommentsInLocalTime.setDefaultSetting = function() {
    var defaultSetting, name, settings;
    if (!arguments.length) {
      return false;
    }
    if (typeof arguments[0] === 'object') {
      settings = arguments[0];
      for (name in settings) {
        defaultSetting = settings[name];
        if (LocalComments[name] == null) {
          LocalComments[name] = defaultSetting;
        }
      }
      return settings;
    } else if (typeof arguments[0] === 'string') {
      name = arguments[0];
      defaultSetting = arguments[1];
      if (LocalComments[name] == null) {
        LocalComments[name] = defaultSetting;
      }
      return LocalComments[name];
    }
  };

  return CommentsInLocalTime;

})();

checkScript = function() {
  if (window.location.href.indexOf('&disable=loco') === -1) {
    return CommentsInLocalTime.init();
  }
}

runScript = function() {
  mw.hook('wikipage.content').add( function ( $content ) {
    setTimeout("checkScript();", 0);
  });
  return $(window).load(function() {
    return checkScript();
  });
};

if (typeof waitForScripts === 'function') {
  waitForScripts(runScript);
} else {
  runScript();
}