Friday, March 2, 2012

48 Comments Only


// ==UserScript==
// @name        48 Comments Only
// @namespace   http://akr.tw/
// @description Follow AKB48/SKE48/NMB48/HKT48 members on Google+
// @author      akiratw
// @version     0.95
// @license     MIT License
// @source      http://userscripts.org/scripts/show/120097
// @include     https://plus.google.com/*
// ==/UserScript==

/**
 * 48 Comments Only
 */

/**
 * @constructor
 */
GM48CO = function() {
 // ---------- Constants ----------
 // Userscript version
 this.VERSION = 0.95;
 
 // Userscript ID on userscript.org
 this.ID = '120097';
 
 // Debug mode. Set to TRUE to print debug message to console.
 this.DEBUG = false;
 
 // Settings key name in localStorage.
 this.SETTINGS_KEY = 'userscript.48commentsonly';
 
 // Google Spreadsheet member data file key.
 this.SPREADSHEET_KEY = '0AgHeyFUOpHyjdEtaLU84LUQ3Q1c5Q3FQR2JvOXRvckE';
 
 // Load Google+ JavaScript API.
 this.API = new GooglePlusAPI();
 
 // Google+ DOM selectors
 this.SELECTORS = {};
 this.SELECTORS.navigation = 'div#gbmpdv';
 this.SELECTORS.post = 'div[id^="update-"]';
 this.SELECTORS.author = 'a[oid]';
 this.SELECTORS.comments = 'div.gemAid';
 this.SELECTORS.plus = 'esw';
 this.SELECTORS.plusOn = 'eswa';
 this.SELECTORS.plusOff = 'eswd';
 
 // Comment check interval (ms).
 this.CHECK_INTERVAL = 10000;
 
 // Maximum number of comments.
 this.MAX_COMMENTS = 500;
 
 // ---------- Private Fields ----------
 // User settings and its default values.
 this._settings = {};
 this._settings.gplusIDs = [];
 this._settings.highlightMyComments = true;
 
 // i18n Strings.
 this._lang = {};
};

/**
 * Add general userscript styles.
 * These styles can be used anywhere in userscript.
 */
GM48CO.prototype._addGeneralStyles = function() {
 var css = {};
 css['.GM48CO'] = {};
 css['.GM48CO']['color'] = '#333';
 css['.GM48CO']['font'] = 'normal 12px Arial, sans-serif';
 css['.GM48CO_cf:before, .GM48CO_cf:after'] = {};
 css['.GM48CO_cf:before, .GM48CO_cf:after']['display'] = 'table';
 css['.GM48CO_cf:before, .GM48CO_cf:after']['content'] = '""';
 css['.GM48CO_cf:after'] = {};
 css['.GM48CO_cf:after']['clear'] = 'both';
 css['.GM48CO_fl'] = {};
 css['.GM48CO_fl']['float'] = 'left';
 css['.GM48CO_fl']['margin'] = '2px';
 css['.GM48CO_fr'] = {};
 css['.GM48CO_fr']['float'] = 'right';
 css['.GM48CO_fr']['margin'] = '2px';
 css['button.GM48CO'] = {};
 css['button.GM48CO']['margin'] = '2px';
 css['button.GM48CO']['padding'] = '5px 10px';
 css['button.GM48CO']['border'] = '1px solid #DCDCDC';
 css['button.GM48CO']['border-radius'] = '2px';
 css['button.GM48CO']['background'] = '#F5F5F5';
 css['button.GM48CO']['color'] = '#444';
 css['button.GM48CO']['font-weight'] = 'bold';
 css['button.GM48CO:hover'] = {};
 css['button.GM48CO:hover']['box-shadow'] = '0 1px 1px #CCC';
 css['button.GM48CO.GM48CO_min'] = {};
 css['button.GM48CO.GM48CO_min']['cursor'] = 'pointer';
 css['button.GM48CO.GM48CO_min']['border'] = 'none';
 css['button.GM48CO.GM48CO_min']['border-radius'] = '0';
 css['button.GM48CO.GM48CO_min']['background'] = 'transparent';
 css['button.GM48CO.GM48CO_main'] = {};
 css['button.GM48CO.GM48CO_main']['border-color'] = '#3079ED';
 css['button.GM48CO.GM48CO_main']['background'] = '#4D90FE';
 css['button.GM48CO.GM48CO_main']['color'] = '#FFFFFF';
 css['button.GM48CO.GM48CO_add'] = {};
 css['button.GM48CO.GM48CO_add']['border-color'] = '#B0281A';
 css['button.GM48CO.GM48CO_add']['background'] = '#D14836';
 css['button.GM48CO.GM48CO_add']['color'] = '#FFF';
 css['button.GM48CO.GM48CO_submit'] = {};
 css['button.GM48CO.GM48CO_submit']['border-color'] = '#29691D';
 css['button.GM48CO.GM48CO_submit']['background'] = '#3D9400';
 css['button.GM48CO.GM48CO_submit']['color'] = '#FFF';
 css['input.GM48CO, textarea.GM48CO'] = {};
 css['input.GM48CO, textarea.GM48CO']['padding'] = '5px';
 
 this._addCSS(css, 'GM48CO');
};

/**
 * Initialize i18n Strings.
 *
 * Feel free to translate the following strings!
 * And, if you want, you can send me your translation on Google+.
 * http://akr.tw/+
 */
GM48CO.prototype._i18n = function() {
 var userLang = $('html').attr('lang');
 var langs = {};
 
 // English
 langs['en'] = {};
 langs['en']['48 Comments Only'] = '48 Comments Only';
 langs['en']['Refresh'] = 'Refresh';
 langs['en']['Expand'] = 'Expand';
 langs['en']['Collapse'] = 'Collapse';
 langs['en']['Edit'] = 'Edit';
 langs['en']['Save'] = 'Save';
 langs['en']['Loading...'] = 'Loading...';
 langs['en']['Comments not found.'] = 'Comments not found.';
 langs['en']['A few seconds ago.'] = 'A few seconds ago.';
 langs['en']['minute(s) ago.'] = ['minute ago.', 'minutes ago.'];
 langs['en']['hour(s) ago.'] = ['hour ago.', 'hours ago.'];
 langs['en']['day(s) ago.'] = ['day ago', 'days ago.'];
 langs['en']['Save Settings'] = 'Save Settings';
 langs['en']['Cancel'] = 'Cancel';
 langs['en']['Check Update'] = 'Check Update';
 langs['en']['Checking...'] = 'Checking...';
 langs['en']['Update available'] = 'Update available';
 langs['en']['No update available'] = 'No update available';
 langs['en']['All'] = 'All';
 langs['en']['Custom'] = 'Custom';
 langs['en']['Circles'] = 'Circles';
 langs['en']['Add'] = 'Add';
 langs['en']['Member list is synced with the Google Spreadsheet file.'] = 'Member list is synchronized with the Google Spreadsheet file.';
 langs['en']['Loading my profile...'] = 'Loading my profile...';
 langs['en']['Loading users from my circles...'] = 'Loading users from my circles...';
 langs['en']['Loading member data...'] = 'Loading member data...';
 langs['en']['Loading users in my local settings...'] = 'Loading users in my local settings...';
 langs['en']['Loading user profiles...'] = 'Loading user profiles...';
 langs['en']['Error occurred.'] = 'Error occurred.';
 langs['en']['%s has been added.'] = '%s has been added.';
 langs['en']['%s has been removed.'] = '%s has been removed.';
 langs['en']['%s is in the list already.'] = '%s is in the list already.'
 langs['en']['Error ID or URL.'] = 'Error ID or URL.';
 langs['en']['Are you sure to remove %s ?'] = 'Are you sure you want to remove %s ?';
 
 // Japanese
 langs['ja'] = {};
 langs['ja']['48 Comments Only'] = '48 Comments Only';
 langs['ja']['Refresh'] = 'リロード';
 langs['ja']['Expand'] = '展開する';
 langs['ja']['Collapse'] = '折りたたむ';
 langs['ja']['Edit'] = '編集';
 langs['ja']['Save'] = '保存';
 langs['ja']['Loading...'] = '読み込んでいます…';
 langs['ja']['Comments not found.'] = 'コメントが見つかりません。';
 langs['ja']['A few seconds ago.'] = '数秒前';
 langs['ja']['minute(s) ago.'] = ['分前', '分前'];
 langs['ja']['hour(s) ago.'] = ['時間前', '時間前'];
 langs['ja']['day(s) ago.'] = ['日前', '日前'];
 langs['ja']['Save Settings'] = '保存';
 langs['ja']['Cancel'] = 'キャンセル';
 langs['ja']['Check Update'] = 'スクリプト更新チェック';
 langs['ja']['Checking...'] = 'チェック中…';
 langs['ja']['Update available'] = '新しいバージョンが見つかりました。';
 langs['ja']['No update available'] = '最新バージョンを使っています。';
 langs['ja']['All'] = 'すべて';
 langs['ja']['Custom'] = 'カスタム';
 langs['ja']['Circles'] = 'サークル';
 langs['ja']['Add'] = '追加';
 langs['ja']['Member list is synced with the Google Spreadsheet file.'] = 'メンバーリストは Google スプレッドシートのファイルと同期されています。';
 langs['ja']['Loading my profile...'] = '私のプロファイルを読み込んでいます…';
 langs['ja']['Loading users from my circles...'] = 'サークル内のユーザーを読み込んでいます...';
 langs['ja']['Loading member data...'] = 'メンバーデータを読み込んでいます…';
 langs['ja']['Loading users in my local settings...'] = 'ローカル設定を読み込んでいます…';
 langs['ja']['Loading user profiles...'] = 'プロファイルを読み込んでいます…';
 langs['ja']['Error occurred.'] = 'エラーが発生しました。';
 langs['ja']['%s has been added.'] = '%s を追加しました。';
 langs['ja']['%s has been removed.'] = '%s を削除しました。';
 langs['ja']['%s is in the list already.'] = '%s は既にリストにあります。'
 langs['ja']['Error ID or URL.'] = '不正な ID / URL。';
 langs['ja']['Are you sure to remove %s ?'] = '%s を削除してよろしいですか?';
 
 // Chinese
 langs['zh'] = {};
 langs['zh']['48 Comments Only'] = '48 Comments Only';
 langs['zh']['Refresh'] = '重新整理';
 langs['zh']['Expand'] = '展開';
 langs['zh']['Collapse'] = '收合';
 langs['zh']['Edit'] = '編輯';
 langs['zh']['Save'] = '儲存';
 langs['zh']['Loading...'] = '正在讀取中…';
 langs['zh']['Comments not found.'] = '找不到留言。';
 langs['zh']['A few seconds ago.'] = '剛剛';
 langs['zh']['minute(s) ago.'] = ['分鐘前', '分鐘前'];
 langs['zh']['hour(s) ago.'] = ['小時前', '小時前'];
 langs['zh']['day(s) ago.'] = ['天前', '天前'];
 langs['zh']['Save Settings'] = '儲存';
 langs['zh']['Cancel'] = '取消';
 langs['zh']['Check Update'] = '檢查更新';
 langs['zh']['Checking...'] = '正在檢查…';
 langs['zh']['Update available'] = '找到更新的版本。';
 langs['zh']['No update available'] = '正在使用最新的版本。';
 langs['zh']['All'] = '全部';
 langs['zh']['Custom'] = '自訂';
 langs['zh']['Circles'] = '社交圈';
 langs['zh']['Add'] = '新增';
 langs['zh']['Member list is synced with the Google Spreadsheet file.'] = '成員名單與 Google 試算表同步。';
 langs['zh']['Loading my profile...'] = '正在載入我的個人檔案…';
 langs['zh']['Loading users from my circles...'] = '正在載入我社交圈內的使用者...';
 langs['zh']['Loading member data...'] = '正在載入成員資料…';
 langs['zh']['Loading users in my local settings...'] = '正在載入我的設定……';
 langs['zh']['Loading user profiles...'] = '正在載入使用者個人檔案…';
 langs['zh']['Error occurred.'] = '發生錯誤。';
 langs['zh']['%s has been added.'] = '已新增 %s。';
 langs['zh']['%s has been removed.'] = '已刪除 %s。';
 langs['zh']['%s is in the list already.'] = '%s 已經在名單內。';
 langs['zh']['Error ID or URL.'] = '錯誤的 ID 或 URL。';
 langs['zh']['Are you sure to remove %s ?'] = '確定要刪除 %s 嗎?';
 
 if (langs[userLang]) { 
  this._lang = langs[userLang];
 } else {
  this._lang = langs['en'];
 }
};

/**
 * Get a i18n string.
 *
 * @param {string} string
 * @return {string} Translated string.
 */
GM48CO.prototype._ = function(string) {
 if (this._lang[string]) {
  return this._lang[string];
 } else {
  return string;
 }
};

/**
 * Comment Highlight UI.
 */
GM48CO.prototype._highlightUI = function() {
 var self = this;
 var regexIDs = new RegExp('(' + self._settings.gplusIDs.join('|').slice(0, -1) + ')');
 var myID = '';
 var selectors = {};
 selectors.wrapper = '.GM48CO_comments_wrapper';
 selectors.list = '.GM48CO_comments_list';
 selectors.buttons = {};
 selectors.buttons.reload = '.GM48CO_comments_button_reload';
 selectors.buttons.toggle = '.GM48CO_comments_button_toggle';
 selectors.item = {};
 selectors.item.member = '.GM48CO_comments_item_member';
 selectors.item.myself = '.GM48CO_comments_item_myself';
 selectors.toolbar = '.GM48CO_toolbar';
 selectors.status = '.GM48CO_status';
 selectors.photo = '.GM48CO_comment_photo';
 selectors.author = '.GM48CO_comment_name';
 selectors.content = '.GM48CO_comment_content';
 selectors.time = '.GM48CO_comment_time';
 selectors.counter = '.GM48CO_comment_counter';
 selectors.edit = '.GM48CO_edit';
 selectors.del = '.GM48CO_del';
 
 /**
  * Initialize.
  */
 var init = function() {
  // If there is no IDs in user settings, read IDs from Google Spreadsheet
  // files and save it.
  if (self._settings.gplusIDs.length == 0) {
   self._getMemberData(function(response) {
    for (var id in response.data.members) {
     self._settings.gplusIDs.push(id);
    };
    self._saveSettings();
   });
  }
  
  // Get the current user ID.
  if (self.API.isAuthenticated()) {
   self.API.lookupMyself(function(response) {
    self._log(response);
    if (response.error) return;
    
    myid = response.data.id;
   });
  } else {
   myid = 0;
  }
  
  addCSS();
  bindEvents();
 };
 
 /**
  * Add CSS rules to page.
  */
 var addCSS = function() {
  var css = {};
  css[selectors.wrapper] = {};
  css[selectors.wrapper]['display'] = 'none';
  css[selectors.toolbar] = {};
  css[selectors.toolbar]['background'] = '#F2F2F2';
  css[selectors.status] = {};
  css[selectors.status]['display'] = 'inline-block';
  css[selectors.status]['padding'] = '2px 5px';
  css[selectors.status]['background'] = '#FF9';
  css[selectors.status]['color'] = '#333';
  css[selectors.item.member] = {};
  css[selectors.item.member]['margin'] = '1px 0';
  css[selectors.item.member]['padding'] = '5px';
  css[selectors.item.member]['border-left'] = '1px solid #FFCCE5';
  css[selectors.item.member]['background'] = '#FFF2F6';
  css[selectors.item.myself] = {};
  css[selectors.item.myself]['margin'] = '1px 0';
  css[selectors.item.myself]['padding'] = '5px';
  css[selectors.item.myself]['border-left'] = '1px solid #CCCCCC';
  css[selectors.item.myself]['background'] = '#F5F5F5';
  css[selectors.photo] = {};
  css[selectors.photo]['width'] = '48px';
  css[selectors.photo]['height'] = '48px';
  css[selectors.photo]['padding'] = '0 5px 0 0';
  css[selectors.content] = {};
  css[selectors.content]['margin'] = '5px 0';
  css[selectors.content + '[contenteditable]'] = {};
  css[selectors.content + '[contenteditable]']['padding'] = '5px';
  css[selectors.content + '[contenteditable]']['border'] = '1px solid #CCC';
  css[selectors.content + '[contenteditable]']['box-shadow'] = 'inset 0 1px 1px #CCC';
  css[selectors.content + '[contenteditable]']['background'] = '#FFF';
  css[selectors.time] = {};
  css[selectors.time]['color'] = '#999';
  css[selectors.counter] = {};
  css[selectors.counter]['color'] = '#CCC';
  css[selectors.counter]['font-size'] = '11px';
  css[selectors.counter]['font-style'] = 'italic';
  
  self._addCSS(css, 'GM48CO_comments');
 };
 
 /**
  * Bind events on elements.
  */
 var bindEvents = function() {
  $(document).on('mouseenter', self.SELECTORS.post, initPost);
  
  // Reload button.
  $(document).on('click', selectors.buttons.reload, function() {
   var $post = $(this).parents(self.SELECTORS.post);
   $post.trigger('checkComment', [true]);
  });
  
  // Plus / Un-plus button of comments.
  $(document).on('click', selectors.time + ' button.' + self.SELECTORS.plus, function() {
   var $this = $(this);
   var $counter = $this.prev('strong');
   
   if ($counter.length == 0) {
    $('<strong>+1</strong> ').insertBefore($this);
   }
   
   var addValue = $this.hasClass(self.SELECTORS.plusOn) ? 1 : -1;
   var value = parseInt($counter.text()) + addValue;
   
   if (value == 0) {
    $counter.remove();
   } else {
    $counter.text('+' + (parseInt($counter.text()) + addValue));
   }
  });
  
  // Edit comment.
  $(document).on('click', selectors.edit, function(event) {
   event.preventDefault();
   
   var $this = $(this);
   var $post = $this.parents(self.SELECTORS.post);
   var $comment = $this.parents(selectors.item.myself);
   var $commentContent = $comment.find(selectors.content);
   var id = $comment.attr('id');
   
   if ($commentContent.attr('contenteditable') == 'true') {
    $commentContent.removeAttr('contenteditable');
    $this.text(self._('Edit'));
    
    var comment = $commentContent.html();
    
    // Convert content to plaintext.
    // NOTE: There are some problems about line break.
    var $pre = $('<pre />').html(comment);
    $pre.find('div').replaceWith(function() { return "\n" + this.innerHTML; });
    $pre.find('br').replaceWith("\n");
    comment = $pre.text().replace(/^\n\n*/, '').replace(/\n\n*$/, '');
    
    // Send a request to edit comment.
    self.API.editComment(function(response) {
     self._log(response);
     if (response.error) {
      return showStatus(self._('Error occurred.'));
     }
     
     var editedComment = response.data.html;
     $commentContent.html(editedComment);
     
     $this.text(self._('Edit'));
    }, $post.data('gm48co-id'), id, comment);
   } else {
    $commentContent
     .attr('contenteditable', 'true')
     .focus();
    
    $this.text(self._('Save'));
   }
  });
  
  // Expand or collapse comments.
  $(document).on('click', selectors.buttons.toggle, function() {
   var $this = $(this);
   var $comments = $this.parents(self.SELECTORS.post).find(selectors.list);
   
   if ($comments.is(':visible')) {
    $comments.slideUp(500, function(){
     $this.text('▼ ' + self._('Expand') + ' (' + $comments.find(selectors.item.member).length + ')');
    });
   } else {
    $comments.slideDown(500, function(){
     $this.text('▲ ' + self._('Collapse'));
    });
   }
  });
 };
 
 /**
  * Initialize Post.
  */
 var initPost = function() {
  var $this = $(this);
  var authorID = $this.find(self.SELECTORS.author).eq(0).attr('oid');
  
  // Do nothing but unbind event if the post is not posted by users in list.
  if (!authorID.match(regexIDs)) {
   $this.off('mouseenter');
   return;
  }
  
  if ($this.data('gm48co-id')) return;
  
  $this.data('gm48co-id', $this.attr('id').replace(/^update-(.+)$/, '$1'));
  $this.data('gm48co-checked', 0);
  
  var content = [
   '<div class="' + selectors.toolbar.substring(1) + '">',
   ' <button class="' + selectors.buttons.reload.substring(1) + ' GM48CO GM48CO_min">' + self._('Refresh') + '</button>',
   ' <button class="' + selectors.buttons.toggle.substring(1) + ' GM48CO GM48CO_min">▲ ' + self._('Collapse') + '</button>',
   ' <span class="' + selectors.status.substring(1) + '"></span>',
   '</div>',
   '<div class="' + selectors.list.substring(1) + '">',
   '</div>',
  ].join("\n");
  
  $('<div>')
   .addClass(selectors.wrapper.substring(1))
   .html(content)
   .insertBefore($this.find(self.SELECTORS.comments).parent())
   .slideDown(200);
  
  // Bind and unbind events on post.
  $this.on('checkComment', getComments);
  $this.on('mouseover', getComments);
  $this.on('DOMSubtreeModified', getComments);
  $this.off('mouseenter');
  
  $this.trigger('checkComment');
 };
 
 /**
  * Get the post comments and show them.
  *
  * @param {boolean} force True to force reload.
  */
 var getComments = function(event, force) {
  var $this = $(this);
  var now = new Date();
  
  // Do nothing if user is editing their comment.
  if ($this.find(selectors.content + '[contenteditable]').length != 0 && !force) return;
  
  // Prevent requesting too much at the same time.
  if (!force) {
   if (now.getTime() - $this.data('gm48co-checked') < self.CHECK_INTERVAL) return;
  }
  
  $this.data('gm48co-checked', now.getTime());
  
  var id = $this.data('gm48co-id');
  
  showStatus(self._('Loading...'), $this);
  
  // Send a request to get post data.
  self.API.lookupPost(function(response) {
   self._log(response);
   if (response.error) return showStatus('Error.', $this);
   
   var comments = response.data.comments;
   var output = {};
   output.member = [];
   output.myself = [];
   
   // Loop through all comments.
   comments.forEach(function(element, i) {
    var postBy = '';
    if (self._settings.highlightMyComments && element.owner.id == myid) {
     postBy = 'myself';
    } else if(element.owner.id.match(regexIDs)) {
     postBy = 'member';
    } else {
     return;
    }
    
    var time = new Date(element.time);
    if (element.time_edited) var time_edited = new Date(element.time_edited);
    
    // Comment HTML.
    var html = [
     '<div id="' + element.id + '" class="' + selectors.item[postBy].substring(1) + ' GM48CO_cf">',
     ' <img class="' + selectors.photo.substring(1) + ' GM48CO_fl" src="' + element.owner.photo + '?sz=48" oid="' + element.owner.id + '">',
     ' <div class="GM48CO_fl" style="width: 85%; max-width: 85%">',
     '  <div class="GM48CO_cf">',
     '   <div class="' + selectors.author.substring(1) + ' GM48CO_fl">',
     '    <a href="./' + element.owner.id + '" oid="' + element.owner.id + '"><strong>' + element.owner.name + '</strong></a></strong>',
     '   </div>',
     '   <div class="' + selectors.counter.substring(1) + ' GM48CO_fr">#' + (i + 1) + '</div>',
     '  </div>',
     '  <div class="' + selectors.content.substring(1) + '">',
     '   ' + element.html,
     '  </div>',
     '  <div class="' + selectors.time.substring(1) + ' GM48CO_cf">',
     '   <div title="' + time.toLocaleString() + '" class="GM48CO_fl">',
     '    ' + time.toHumanTimeDiff(self._('A few seconds ago.'), self._('minute(s) ago.'), self._('hour(s) ago.'), self._('day(s) ago.')),
     '    (' + time.toShortDateString() + ' ' + time.toShortTimeString() + ')',
     '   </div>',
     '   <div class="GM48CO_fl">',
     '    ' + (time_edited ? '(' + self._('Edit') + ' ' + time_edited.toShortDateString() + ' ' + time_edited.toShortTimeString() + ')' : ''),
     '   </div>',
     '   <div class="GM48CO_fl">',
     '    ' + ((postBy == 'myself') ? '<a href="#" class="' + selectors.edit.substring(1) + '">' + self._('Edit') + '</a>' : ''),
     '   </div>',
     '   <div class="GM48CO_fr">',
     '    ' + (element.plusone.count ? '<strong>+' + element.plusone.count + '</strong>' : ''),
     '    ' + (!myid ? '' : '<button id="po-' + element.id + '" href="javascript:void(0);" class="' + self.SELECTORS.plus + ' ' + (element.plusone.isPlused ? self.SELECTORS.plusOn : self.SELECTORS.plusOff) + '" g:entity="comment:' + element.id + '" style="vertical-align: middle"></button>'),
     '   </div>',
     '  </div>',
     ' </div>',
     '</div>'
    ].join("\n");
    
    if (postBy == 'myself') {
     output.myself.push(html);
    } else {
     output.member.push(html);
    }
   });
   
   // Insert comments to post.
   $this.find(selectors.list).empty();
   $this.find(selectors.list).append(output.member.join("\n"))
   $this.find(selectors.list).append(output.myself.join("\n"))
   
   // If the comment limit reached, we don't need to check it every time,
   // so let's unbind the mouseover event.
   if (comments.length >= self.MAX_COMMENTS) {
    $this.off('mouseover', getComments);
   };
   
   // If there is no comment to show.
   if (output.member.length == 0 && output.myself.length == 0) {
    showStatus(self._('Comments not found.'), $this);
   } else {
    showStatus('', $this);
   }
  }, id);
 }
 
 /**
  * Show status text.
  *
  * @param {string} message The message text. Empty string to hide status.
  * @param {Object} $post The post jQuery object.
  */
 var showStatus = function(message, $post) {
  if (message == '') {
   $post.find(selectors.status).hide();
  } else {
   $post.find(selectors.status).text(message).show();
  }
 };
 
 return init();
};

/**
 * Settings UI.
 */
GM48CO.prototype._settingsUI = function() {
 var self = this;
 var selectors = {};
 selectors.buttons = {};
 selectors.buttons.main = '#GM48CO_settings_button_main';
 selectors.buttons.save = '#GM48CO_settings_button_save';
 selectors.buttons.cancel = '#GM48CO_settings_button_cancel';
 selectors.buttons.checkUpdate = '#GM48CO_settings_button_checkUpdate';
 selectors.buttons.selectAll = '#GM48CO_settings_button_selectAll';
 selectors.buttons.tab = '.GM48CO_settings_button_tab';
 selectors.buttons.selectedTab = '.GM48CO_settings_button_selectedTab';
 selectors.buttons.addUser = '#GM48CO_settings_button_addUser';
 selectors.inputs = {};
 selectors.inputs.addUser = '#GM48CO_settings_input_addUser';
 selectors.dialog = '#GM48CO_settings_dialog';
 selectors.header = '#GM48CO_settings_header';
 selectors.main = '#GM48CO_settings_main';
 selectors.footer = '#GM48CO_settings_footer';
 selectors.overlay = '#GM48CO_settings_overlay';
 selectors.tabs = '#GM48CO_settings_tabs';
 selectors.addUser = '#GM48CO_settings_addUsers';
 selectors.users = '#GM48CO_settings_users';
 selectors.user = {};
 selectors.user.item = '.GM48CO_settings_user_item';
 selectors.user.selected = '.GM48CO_settings_user_selected';
 selectors.user.photo = '.GM48CO_settings_user_photo';
 selectors.user.name = '.GM48CO_settings_user_name';
 selectors.user.label = '.GM48CO_settings_user_label';
 selectors.user.del = '.GM48CO_settings_user_del';
 selectors.counter = '#GM48CO_settings_counter';
 selectors.status = '#GM48CO_settings_status';
 
 /**
  * Initialize.
  */
 var init = function() {
  addCSS();
  createButton();
  bindEvents();
 };
 
 /**
  * Add CSS.
  */
 var addCSS = function() {
  var css = {};
  css[selectors.buttons.selectAll] = {};
  css[selectors.buttons.selectAll]['display'] = 'inline-block';
  css[selectors.buttons.selectAll]['vertical-align'] = 'middle';
  css[selectors.buttons.tab] = {};
  css[selectors.buttons.tab]['margin'] = '2px 0 !important';
  css[selectors.buttons.tab]['border-bottom'] = '2px solid transparent !important';
  css[selectors.buttons.selectedTab] = {};
  css[selectors.buttons.selectedTab]['border-color'] = '#CC295F !important';
  css[selectors.buttons.selectedTab]['color'] = '#CC295F !important';
  css[selectors.overlay] = {};
  css[selectors.overlay]['display'] = 'none';
  css[selectors.overlay]['position'] = 'fixed';
  css[selectors.overlay]['z-index'] = '1000';
  css[selectors.overlay]['top'] = '0';
  css[selectors.overlay]['left'] = '0';
  css[selectors.overlay]['width'] = '100%';
  css[selectors.overlay]['height'] = '100%';
  css[selectors.overlay]['background'] = '#FFF';
  css[selectors.overlay]['opacity'] = '0.8';
  css[selectors.dialog] = {};
  css[selectors.dialog]['display'] = 'none';
  css[selectors.dialog]['position'] = 'absolute';
  css[selectors.dialog]['z-index'] = '1001';
  css[selectors.dialog]['top'] = '50px';
  css[selectors.dialog]['width'] = '920px';
  css[selectors.dialog]['overflow'] = 'auto';
  css[selectors.dialog]['margin'] = '10px auto';
  css[selectors.dialog]['padding'] = '20px';
  css[selectors.dialog]['border'] = '1px solid #CCC';
  css[selectors.dialog]['box-shadow'] = '0 5px 20px #CCC';
  css[selectors.dialog]['background'] = '#FFF';
  css[selectors.header] = {};
  css[selectors.header]['color'] = '#CC295F';
  css[selectors.header]['font-size'] = '18px';
  css[selectors.main] = {};
  css[selectors.main]['padding'] = '10px 0';
  css[selectors.footer] = {};
  css[selectors.footer]['color'] = '#999';
  css[selectors.tabs] = {};
  css[selectors.tabs]['padding'] = '0 5px';
  css[selectors.addUser] = {};
  css[selectors.addUser]['display'] = 'none';
  css[selectors.addUser]['margin'] = '5px';
  css[selectors.addUser]['padding'] = '5px';
  css[selectors.addUser]['background'] = '#F2F2F2';
  css[selectors.users] = {};
  css[selectors.users]['height'] = '320px';
  css[selectors.users]['max-height'] = '320px';
  css[selectors.users]['overflow'] = 'auto';
  css[selectors.users]['margin'] = '10px 0';
  css[selectors.user.item] = {};
  css[selectors.user.item]['width'] = '200px';
  css[selectors.user.item]['margin'] = '5px';
  css[selectors.user.item]['padding'] = '5px';
  css[selectors.user.item]['border'] = '1px solid #CCC';
  css[selectors.user.item]['border-radius'] = '2px';
  css[selectors.user.item]['background'] = '#F5F5F5';
  css[selectors.user.selected] = {};
  css[selectors.user.selected]['border-color'] = '#FCD';
  css[selectors.user.selected]['background'] = '#FFF2F7';
  css[selectors.user.photo] = {};
  css[selectors.user.photo]['width'] = '48px';
  css[selectors.user.photo]['height'] = '48px';
  css[selectors.user.name] = {};
  css[selectors.user.name]['max-width'] = '120px';
  css[selectors.user.name]['max-height'] = '30px';
  css[selectors.user.name]['overflow'] = 'hidden';
  css[selectors.user.name]['font-size'] = '13px';
  css[selectors.user.label] = {};
  css[selectors.user.label]['display'] = 'inline-block';
  css[selectors.user.label]['max-width'] = '120px';
  css[selectors.user.label]['max-height'] = '15px';
  css[selectors.user.label]['overflow'] = 'hidden';
  css[selectors.user.label]['margin'] = '1px 0';
  css[selectors.user.label]['color'] = '#999';
  css[selectors.status] = {};
  css[selectors.status]['display'] = 'none';
  css[selectors.status]['position'] = 'absolute';
  css[selectors.status]['right'] = '20px';
  css[selectors.status]['padding'] = '5px 10px';
  css[selectors.status]['border-radius'] = '5px';
  css[selectors.status]['background'] = '#FF9';
  css[selectors.status]['color'] = '#333';
  css[selectors.status]['font-weight'] = 'bold';
  
  self._addCSS(css, 'GM48CO_settings');
 };
 
 /**
  * Create a button on Google+ navigation bar.
  */
 var createButton = function() {
  var $button = $(self.SELECTORS.navigation).find('a:last').clone();
  $button
   .attr('id', selectors.buttons.main.substring(1))
   .attr('href', '#')
   .attr('title', self._('48 Comments Only'))
   .html('<div style="padding: 5px"><strong>48 Comments Only</strong></div>')
   .appendTo(self.SELECTORS.navigation);
 };
 
 /**
  * Create the settings dialog.
  */
 var createDialog = function() {
  // Dialog content.
  var content = [
   '<div id="' + selectors.status.substring(1) + '" class="GM48CO_fl"></div>',
   '',
   '<div id="' + selectors.header.substring(1) + '">',
   ' <div>' + self._('48 Comments Only') + '</div>',
   '</div>',
   '',
   '<div id="' + selectors.main.substring(1) + '">',
   ' <div id="' + selectors.tabs.substring(1) + '">',
   '  <input type="checkbox" id="' + selectors.buttons.selectAll.substring(1) + '">',
   '  <span id="' + selectors.counter.substring(1) + '">0 / 0</span>',
   '  <button data-group="all" class="GM48CO GM48CO_min ' + selectors.buttons.tab.substring(1) + '">' + self._('All') + '</button>',
   '  <button data-group="circles" class="GM48CO GM48CO_min ' + selectors.buttons.tab.substring(1) + '">' + self._('Circles') + '</button>',
   '  <button data-group="custom" class="GM48CO GM48CO_min ' + selectors.buttons.tab.substring(1) + '">' + self._('Custom') + '</button>',
   ' </div>',
   ' <div id="' + selectors.addUser.substring(1) + '">',
   '  <input type="text" id="' + selectors.inputs.addUser.substring(1) + '" class="GM48CO" size="50" placeholder="Profile URL / ID" />',
   '  <button id="' + selectors.buttons.addUser.substring(1) + '" class="GM48CO GM48CO_add">' + self._('Add') + '</button>',
   ' </div>',
   ' <div id="' + selectors.users.substring(1) + '" class="GM48CO GM48CO_cf">',
   ' </div>',
   ' <a href="https://docs.google.com/spreadsheet/pub?&key=' + self.SPREADSHEET_KEY + '" target="_blank">' + self._('Member list is synced with the Google Spreadsheet file.') + '</a>',
   '</div>',
   '',
   '<div id="' + selectors.footer.substring(1) + '" class="GM48CO_cf">',
   ' <div class="GM48CO_fl">',
   '  <a href="http://userscripts.org/scripts/show/120097" target="_blank"><strong>48 Comments Only</strong></a> -',
   '  v' + self.VERSION,
   '  <br>',
   '  Written by <a href="/108682025538161540700" oid="108682025538161540700" target="_blank">akiratw</a>, 2012 - ',
   '  Licensed under <a href="http://www.opensource.org/licenses/mit-license.php" target="_blank">MIT License</a>',
   ' </div>',
   ' <div class="GM48CO_fl">',
   '  <button id="' + selectors.buttons.checkUpdate.substring(1) + '" class="GM48CO">' + self._('Check Update') + '</button>',
   ' </div>',
   ' <div class="GM48CO_fr">',
   '  <button id="' + selectors.buttons.save.substring(1) +'" class="GM48CO GM48CO_main">' + self._('Save Settings') + '</button>',
   '  <button id="' + selectors.buttons.cancel.substring(1) +'" class="GM48CO">' + self._('Cancel') + '</button>',
   ' </div>',
   '</div>'
  ].join("\n");
  
  // Overlay.
  $('<div>')
   .attr('id', selectors.overlay.substring(1))
   .appendTo('body');
  
  // Dialog.
  $('<section>')
   .attr('id', selectors.dialog.substring(1))
   .addClass('GM48CO')
   .html(content)
   .appendTo('body');
  
  // Reset the position.
  $(window).resize();
  
  // Read data.
  readData();
 };
 
 /**
  * Bind events to elements.
  */
 var bindEvents = function() {
  // Show the settings dialog when navigation button is clicked.
  $(document).on('click', selectors.buttons.main, function() {
   toggleDialog();
   $(this).removeAttr('Pb-I');
   
   return false;
  });
  
  // Save all settings when Save button is clicked.
  $(document).on('click', selectors.buttons.save, function() {
   saveData();
   location.reload(true);
  });
  
  // Update check.
  $(document).on('click', selectors.buttons.checkUpdate, function() {
   var $this = $(this);
   
   $this.text(self._('Checking...'));
   self._checkUpdate(function(response) {
    if (response.updateAvailable) {
     $this.addClass('GM48CO_submit').text(self._('Update available'));
     $this.click(function(){ window.open(response.url); });
    } else {
     $this.text(self._('No update available'));
    }
   });
  });
  
  // Bind dialog closing events.
  $(document).on('click', selectors.overlay, toggleDialog);
  $(document).on('click', selectors.buttons.cancel, toggleDialog);
  
  // Tab toggle.
  $(document).on('click', selectors.buttons.tab, function() {
   $(selectors.buttons.tab).removeClass(selectors.buttons.selectedTab.substring(1));
   $(this).addClass(selectors.buttons.selectedTab.substring(1));
   
   var group = $(this).attr('data-group');
   
   if (group == 'custom') {
    $(selectors.addUser).slideDown(500);
   } else {
    $(selectors.addUser).slideUp(500);
   }
   
   if (group == 'all') {
    $(selectors.user.item).show();
    $(selectors.buttons.selectAll).trigger('setstatus');
    return;
   }
   
   $(selectors.user.item).each(function() {
    var $this = $(this);
    if ($this.attr('data-group').split(' ').indexOf(group) > -1) {
     $this.show();
    } else {
     $this.hide();
    }
   });
   
   $(selectors.buttons.selectAll).trigger('setstatus');
  });
  
  // User toggle.
  $(document).on('click', selectors.user.item, function() {
   var $this = $(this);
   if ($this.hasClass(selectors.user.selected.substring(1))) {
    $this.removeClass(selectors.user.selected.substring(1));
   } else {
    $this.addClass(selectors.user.selected.substring(1));
   }
   
   $(selectors.buttons.selectAll).trigger('setstatus');
  });
  
  // Select all users.
  $(document).on('click', selectors.buttons.selectAll, function() {
   var $this = $(this);
   if ($this.is(':checked')) {
    $(selectors.user.item + ':visible').addClass(selectors.user.selected.substring(1));
   } else {
    $(selectors.user.selected + ':visible').removeClass(selectors.user.selected.substring(1));
   }
   
   $this.trigger('setstatus');
  }).on('setstatus', selectors.buttons.selectAll, function() {
   var $inView = $(selectors.user.item + ':visible');
   var $selected = $(selectors.user.selected + ':visible');
   
   if ($inView.length == $selected.length) {
    $(this).attr('checked', 'checked').prop('indeterminate', false);
   } else if ($selected.length == 0 || $inView.length == 0) {
    $(this).removeAttr('checked').prop('indeterminate', false);
   } else {
    $(this).prop('indeterminate', true);
   }
   
   $(selectors.counter).text($selected.length + ' / ' + $inView.length);
  });
  
  // Add a user to custom list.
  $(document).on('click', selectors.buttons.addUser, function() {
   var value = $(selectors.inputs.addUser).val();
   if (value == '') return;
   value = value.replace(/https:\/\/plus\.google\.com\/.*(\d{21}).*/, '$1');
   
   if ($(selectors.user.item + '[data-id="' + value + '"]').length != 0) {
    var name = $(selectors.user.item + '[data-id="' + value + '"]').find(selectors.user.name).text();
    showStatus(self._('%s is in the list already.').replace('%s', name));
    return;
   }
   
   self.API.lookupUsers(function(response) {
    self._log(response);
    if (response.error) {
     showStatus(self._('Error ID or URL.'));
    } else {
     user = {};
     user.data = response.data[value].user;
     user.groups = ['custom'];
     addUser(user);
     showStatus(self._('%s has been added.').replace('%s', user.data.name));
    }
   }, value);
  });
  
  // Delete a user from custom list.
  $(document).on('click', selectors.user.del, function() {
   var $user = $(this).parents(selectors.user.item);
   var name = $user.find(selectors.user.name).text();
   var answer = confirm(self._('Are you sure to remove %s ?').replace('%s', name));
   if (answer) {
    $user.remove();
    showStatus(self._('%s has been removed.').replace('%s', name));
   }
   return false;
  });
  
  // Reset the position of dialog when window is resized.
  $(window).on('resize', function() {
   $(selectors.dialog)
    .css('left', ($(window).innerWidth() - $(selectors.dialog).outerWidth()) / 2);
  });
 };
 
 /**
  * Save user data.
  */
 var saveData = function() {
  var ids = [];
  
  self._settings.highlightMyComments = false;
  self._settings.gplusIDS = [];
  
  $(selectors.user.selected).each(function() {
   if ($(this).attr('data-group') == '') {
    self._settings.highlightMyComments = true;
   } else {
    ids.push($(this).attr('data-id'));
   }
  });
  self._settings.gplusIDs = ids;
  
  self._saveSettings();
 };
 
 /**
  * Read user data.
  */
 var readData = function() {
  var users = {};
  
  // Get my profile.
  showStatus(self._('Loading my profile...'));
  self.API.lookupMyself(function(response) {
   self._log(response);
   if (response.error) {
    showStatus(self._('Error occurred.') + ' ERROR: ' + response.error);
   } else {
    users[response.data.id] = {};
    users[response.data.id].groups = [];
    if (self._settings.highlightMyComments) users[response.data.id].selected = true;
    
    // Get users from my circles
    showStatus(self._('Loading users from my circles...'));
    self.API.lookupCircles(function(response) {
     self._log(response);
     if (response.error) {
      showStatus(self._('Error occurred.'));
     } else {
      for (var id in response.data.users) {
       users[id] = {};
       users[id].groups = ['circles'];
       users[id].data = {};
       users[id].data.id = id;
       users[id].data.name = response.data.users[id].data.name;
       users[id].data.photo = response.data.users[id].data.photo;
       users[id].circles = [];
       response.data.users[id].circles.forEach(function(element, i) {
        users[id].circles.push(response.data.circles[element]);
       });
      };
     }
     
     // Get member data from Google Spreadsheet.
     showStatus(self._('Loading member data...'));
     self._getMemberData(function(response) {
      if (response.error) {
       showStatus(self._('Error occurred.') + ' ERROR: ' + response.error);
      } else {
       for (var id in response.data.members) {
        // Add group button first.
        addGroupButton(escape(response.data.members[id].group), response.data.members[id].group);
        
        if (!users[id]) {
         users[id] = {};
         users[id].groups = [response.data.members[id].group];
        } else {
         users[id].groups.push(response.data.members[id].group);
        }
       }
      }
      
      // Get users in my localStorage.
      showStatus(self._('Loading users in my local settings...'));
      self._settings.gplusIDs.forEach(function(element, i) {
       if (!users[element]) {
        users[element] = {};
        users[element].groups = ['custom'];
       }
       users[element].selected = true;
      });
      
      // Lookup all user profile.
      showStatus(self._('Loading user profiles...'));
      var ids = [];
      for (var id in users) {
       if (!users[id].data) ids.push(id);
      }
      self.API.lookupUsers(function(response) {
       self._log(response);
       if (response.error) {
        showStatus(self._('Error occurred.') + ' ERROR: ' + response.error);
       } else {
        for (var id in response.data) {
         users[id].data = response.data[id].user;
        }
        
        // Finished. Add user to list.
        for (var id in users) {
         addUser(users[id]);
        }
        
        $(selectors.buttons.selectAll).trigger('setstatus');
        showStatus('');
       }
      }, ids);
     });
    });
   }
  });
 };
 
 /**
  * Add a user item to list.
  *
  * @param {Object} user The user data object.
  */
 var addUser = function(user) {
  user.groups.forEach(function(element, i) {
   user.groups[i] = escape(element);
  });
  
  var circles = '';
  if (Array.isArray(user.circles)) {
   user.circles.forEach(function(element, i) {
    circles += element.name
    if (i != user.circles.length - 1) circles += ' - ';
   });
  }
  
  var html = [
   '<div class="GM48CO_fl">',
   ' <img src="' + user.data.photo + '?sz=48" class="' + selectors.user.photo.substring(1) + '" oid="' + user.data.id + '">',
   '</div>',
   '<div class="GM48CO_fl">',
   ' <div class="' + selectors.user.name.substring(1) + '">' + user.data.name + '</div>',
   ' <div class="' + selectors.user.label.substring(1) + '">' + circles + '</div>',
   '</div>'
  ].join("\n");
  
  if (user.groups.indexOf('custom') > -1) {
   html += '<a href="#" class="' + selectors.user.del.substring(1) + ' GM48CO_fr">×</a>';
  }
  
  var $user = $('<div>');
  $user
   .attr('data-id', user.data.id)
   .attr('data-group', user.groups.join(' '))
   .addClass(selectors.user.item.substring(1))
   .addClass('GM48CO_fl GM48CO_cf')
   .html(html)
   .appendTo(selectors.users);
  
  if (user.selected) $user.addClass(selectors.user.selected.substring(1));
 };
 
 /**
  * Add a group tab button.
  *
  * @param {string} group The group name.
  * @param {string} displayText The button texy.
  */
 var addGroupButton = function(group, displayText) {
  if ($(selectors.buttons.tab + '[data-group="' + group + '"]').length != 0) return;
  
  var $button = $('<button>');
  $button
   .attr('data-group', group)
   .addClass(selectors.buttons.tab.substring(1))
   .addClass('GM48CO GM48CO_min')
   .text(displayText)
   .appendTo(selectors.tabs);
 };
 
 /**
  * Display status text.
  *
  * @param {string} message The status text. Set to empty to hide message.
  */
 var showStatus = function(message, number) {
  if (message == '') {
   $(selectors.status).hide();
   return;
  }
  
  $(selectors.status)
   .clearQueue()
   .css('display', 'inline-block')
   .text(message);
 };
 
 /**
  * Show or hide the settings dialog.
  */
 var toggleDialog = function() {
  if ($(selectors.dialog).length == 0) createDialog();
  $(selectors.overlay).toggle();
  $(selectors.dialog).toggle();
 };
 
 return init();
};

/**
 * Read user settings from localStorage.
 *
 * @return {Object} The settings.
 */
GM48CO.prototype._readSettings = function() {
 var settings = localStorage.getItem(this.SETTINGS_KEY);
 if (!settings) return this._settings;
 
 this._settings = $.extend(this._settings, JSON.parse(settings));
 return this._settings;
};

/**
 * Write user settings to localStorage.
 *
 * @return {Object} The settings.
 */
GM48CO.prototype._saveSettings = function() {
 var settings = JSON.stringify(this._settings);
 localStorage.setItem(this.SETTINGS_KEY, settings);
 return this._settings;
};

/**
 * Retrieve member data from Google Spreadsheet.
 *
 * @param {function(Object)} callback
 */
GM48CO.prototype._getMemberData = function(callback) {
 var self = this;
 var url = 'https://spreadsheets.google.com/feeds/list/' + this.SPREADSHEET_KEY + '/od6/public/basic?alt=json';
 var success = function(data, textStatus, jqXHR) {
  var data = data.feed;
  var result = {};
  
  result.updated = new Date(data.updated.$t);
  result.members = {};
  
  data.entry.forEach(function(element, i) {
   var id = element.title.$t;
   result.members[id] = {};
   result.members[id].name = element.content.$t.replace(/.*name:\s([^,]+).*/, '$1');
   result.members[id].group = element.content.$t.replace(/.*group:\s([^,]+).*/, '$1');
  });
  
  callback({status: true, data: result});
 };
 var error = function(jqXHR, textStatus, errorThrown) {
  callback({status: false, error: jqXHR.status});
 };
 
 $.ajax({
  url: url,
  type: 'GET',
  dataType: 'json',
  success: success,
  error: error,
  async: true
 });
};

/**
 * Insert CSS rules to page from a CSS object including selectors and properties.
 *
 * @param {Object} css The CSS object.
 * @param {string} id The style tag ID.
 */
GM48CO.prototype._addCSS = function(css, id) {
 var cssString = '';
 
 for (var selectors in css) {
  cssString += selectors + ' { ';
  for (var property in css[selectors]) {
   cssString += property + ': ' + css[selectors][property] + '; ';
  }
  cssString += '}';
  cssString += "\n";
 };
 
 $('<style>')
  .attr('id', id)
  .text(cssString)
  .appendTo('head');
};

/**
 * Check userscript update
 *
 * @param {function(Object)} callback
 */
GM48CO.prototype._checkUpdate = function(callback) {
 var self = this;
 var meta = 'http://userscripts.org/scripts/source/' + this.ID + '.meta.js';
 var script = 'http://userscripts.org/scripts/source/' + this.ID + '.user.js';
 
 if (typeof GM_xmlhttpRequest != 'function') {
  return callback(false);
 }
 
 GM_xmlhttpRequest({
  url: meta,
  method: 'GET',
  onload: function(response) {
   var data = response.responseText;
   var version = parseFloat(data.match(/\/\/\s@version\s+(.+)/)[1]);
   var result = {};
   result.version = version;
   result.updateAvailable = (version > self.VERSION) ? true : false;
   result.url = script;
   
   callback(result);
  },
  onerror: function(response) {
   callback(false);
  }
 });
};

/**
 * Print messages to console.
 *
 * @param {string} message The message to show on console.
 * @param {string} method The console method. (Log, error or warn.)
 */
GM48CO.prototype._log = function(message, method) {
 if (!this.DEBUG) return;
 switch (method) {
  case 'error':
   console.error(message);
   break;
  case 'warn':
   console.warn(message);
   break;
  case 'log':
  default:
   console.log(message);
   break;
 }
};

/**
 * Unit Test
 */
GM48CO.prototype._unitTest = function() {
 if (!this.DEBUG) return;
 this._log('Do a unit test.');
 
 var self = this;
};

/**
 * Initialize Userscript
 */
GM48CO.prototype.init = function() {
 var self = this;
 
 this._log('48 Comments Only Userscript is running.');
 
 this.API.init();
 
 this._readSettings();
 this._addGeneralStyles();
 this._i18n();
 
 self._highlightUI();
 self._settingsUI();
 
 this._unitTest();
 
 return true;
};

// ----------------------------------------------------------------------------

/**
 * Additions of Properties to Date Object
 */

/**
 * @return {string} The date string in "m/d" format.
 */
Date.prototype.toShortDateString = function() {
 var month = this.getMonth() + 1;
 var date = this.getDate();
 
 return month + '/' + date;
};

/**
 * @return {string} The time string in "h:m" format:
 */
Date.prototype.toShortTimeString = function() {
 var hours = this.getHours();
 var minutes = this.getMinutes();
 
 if (minutes < 10) minutes = '0' + minutes;
 
 return hours + ':' + minutes;
};

/**
 * @param {string} just The string for time difference is nearly zero.
 * @param {(string|Array.<string, string>)} minutes The minute/minutes string.
 * @param {(string|Array.<string, string>)} hours The hour/hours string.
 * @param {(string|Array.<string, string>)} days The day/days string.
 * @return {string} The time difference in human readable time format.
 */
Date.prototype.toHumanTimeDiff = function(just, minutes, hours, days) {
 var now = new Date();
 var diff = (now.getTime() - this.getTime()) / 60000;
 
 if (!Array.isArray(minutes)) minutes = [minutes, minutes];
 if (!Array.isArray(hours)) hours = [hours, hours];
 if (!Array.isArray(days)) days = [days, days];
 
 // If the difference is in 1 minute.
 if (diff < 1) {
  return just;
 }
 // If the difference is in 60 minutes.
 if (diff < 60) {
  diff = Math.round(diff);
  return diff + ' ' + ((diff < 1) ? minutes[0] : minutes[1]);
 }
 
 diff = diff / 60;
 // If the difference is in 24 hours.
 if (diff < 24) {
  diff = Math.round(diff);
  return diff + ' ' + ((diff < 1) ? hours[0] : hours[1]);
 }
 
 diff = diff / 24;
 // If the difference is more than 24 hours.
 diff = Math.round(diff);
 return diff + ' ' + ((diff < 1) ? days[0] : days[1]);
};

// ----------------------------------------------------------------------------

/**
 * Google+ JavaScript API
 *
 * This API is modified from "google-plus-extension-jsapi",
 * written by Mohamed Mansour, under free license. Thanks a lot!
 *
 * @see https://github.com/mohamedmansour/google-plus-extension-jsapi
 */

/**
 * @constructor
 */
GooglePlusAPI = function() {
 // ---------- Constants ----------
 // API URLs.
 this.INITIAL_DATA_API = 'https://plus.google.com/u/0/_/initialdata?key=14';
 this.LOOKUP_API = 'https://plus.google.com/u/0/_/socialgraph/lookup/hovercards/';
 this.ACTIVITY_API = 'https://plus.google.com/u/0/_/stream/getactivity/';
 this.PROFILE_GET_API = 'https://plus.google.com/u/0/_/profiles/get/';
 this.CIRCLE_API = 'https://plus.google.com/u/0/_/socialgraph/lookup/circles/?m=true';
 this.COMMENT_API = 'https://plus.google.com/u/0/_/stream/comment/';
 this.COMMENT_EDIT_API = 'https://plus.google.com/u/0/_/stream/editcomment/';
 this.COMMENT_DELETE_API = 'https://plus.google.com/u/0/_/stream/deletecomment/';
 
 // ---------- Private Fields ----------
 this._session = null;
 this._info = null;
};

/**
 * Parse JSON string in a clean way by removing a bunch of commas and brackets.
 * These should only be used in Google+ requests.
 *
 * @param {string} input The irregular JSON string to parse.
 * @return {Object} The parsed JSON object.
 */
GooglePlusAPI.prototype._parseJSON = function(input) {
 var jsonString = input.substring(4);
 jsonString = jsonString.replace(/\[,/g, '[null,');
 jsonString = jsonString.replace(/,\]/g, ',null]');
 jsonString = jsonString.replace(/,,/g, ',null,');
 jsonString = jsonString.replace(/,,/g, ',null,');
 return JSON.parse(jsonString);
};

/**
 * Send a request to Google+ through the userscript. Do some parsing to fix
 * the data when retrieved.
 *
 * @param {function(Object.<string, Object>)} callback
 * @param {string} url The URL to request.
 * @param {string} postData If specified, it will do a POST with the data.
 */
GooglePlusAPI.prototype._requestService = function(callback, url, postData) {
 var self = this;
 var complete = function(jqXHR, textStatus) {
  if (jqXHR.status != 200) {
   callback({
    error: jqXHR.status,
    text: jqXHR.statusText
   });
  } else {
   var text = jqXHR.responseText;
   var results = self._parseJSON(text);
   callback(Array.isArray(results) ? results[0] : results);
  }
 };
 
 if (document.location.href.indexOf('https://plus.google.com/') > -1) {
  var xhr = $.ajax({
   url: url,
   type: postData ? 'POST' : 'GET',
   data: postData || null,
   dataType: 'json',
   async: true,
   complete: complete
  });
 } else {
  // Use setTimeout to avoid unsafeWindow error on Firefox.
  window.setTimeout(function() {
   GM_xmlhttpRequest({
    url: url,
    method: postData ? 'POST' : 'GET',
    data: postData || null,
    onload: function(response){
     var results = self._parseJSON(response.responseText);
     callback(Array.isArray(results) ? results[0] : results);
    }
   });
  }, 0);
 }
};

/**
 * Fire callback safely.
 *
 * @param {function(Object)} callback The callback to fire back.
 * @param {Object} data The data to send in the callback.
 */
GooglePlusAPI.prototype._fireCallback = function(callback, data) {
 if (callback) callback(data);
};

/**
 * Verifies the AJAX response if successfull.
 *
 * @param {Object} response The AJAX response object returned by _requestService.
 * @return {boolean} True if the request is success.
 */
GooglePlusAPI.prototype._isResponseSuccess = function(response) {
 return !response.error;
};

/**
 * Fetch Google+ user private session used for authentication.
 *
 * @param {boolean} reset If set, it will reset the internal cache.
 * @return {string} The Google+ user private session.
 */
GooglePlusAPI.prototype._getSession = function(reset) {
 if (reset || !this._session) {
  var xhr = $.ajax({
   url: 'https://plus.google.com/',
   type: 'GET',
   data: null,
   async: false
  });
  
  var isLogged = false;
  var searchForString = ',"https://www.google.com/csi","';
  var responseText = xhr.responseText;
  
  if (responseText != null) {
   var startIndex = responseText.indexOf(searchForString);
   if (startIndex != 1) {
    var remainingText = responseText.substring(startIndex + searchForString.length);
    var foundSession = remainingText.substring(0, remainingText.indexOf('"'));
    
    // Validate it.
    if (foundSession.match(/([a-zA-Z0-9-]+):([0-9]+)/)) {
     this._session = foundSession;
     isLogged = true;
    }
   }
  }
  
  if (!isLogged) {
   this._session = null;
   console.log('Invalid session. Please login to Google+.');
  }
 }
 
 return this._session;
};

/**
 * Parse out the user object since it is mangled data which majority of the
 * entries are not needed.
 *
 * @param {Object.<Array>} element Google datastructure.
 * @param {boolean} extractCircles Extract circle information as well.
 * @return {(Object|Array.<Object, Array>)} The parsed person.
 */
GooglePlusAPI.prototype._parseUser = function(element, extractCircles) {
 var email = element[0][0];
 var id = element[0][2];
 var name = element[2][0];
 var score = element[2][3];
 var photo = element[2][8];
 var location = element[2][11];
 var employment = element[2][13];
 var occupation = element[2][14];
 var description = element[2][21];
 
 var user = {};
 if (id) user.id = id;
 if (email) user.email = email;
 if (name) user.name = name;
 if (score) user.score = score;
 if (photo) user.photo = this._toProtocolRelativeURL(photo);
 if (location) user.location = location;
 if (employment) user.employment = employment;
 if (occupation) user.occupation = occupation;
 if (description) user.description = description;
 
 var cleanCircles = [];
 if (extractCircles) {
  var dirtyCircles = element[3];
  dirtyCircles.forEach(function(element, index) {
   cleanCircles.push(element[2][0]);
  });
  return [user, cleanCircles];
 } else {
  return user;
 }
};

/**
 * Parse out the post object since it is mangled data which majority of the
 * entries are not needed.
 *
 * @param {Object.<Array>} element Google datastructure.
 * @return {Object} The parsed post.
 */
GooglePlusAPI.prototype._parsePost = function(element) {
 var self = this;
 var item = {};
 
 item.type = element[2].toLowerCase();
 item.time = element[5];
 
 if (element[70]) {
  item.time_edited = parseInt((element[70] + '').substring(0, (item.time + '').length));
 }
 
 item.url = this._toGooglePlusURL(element[21]);
 item.is_public = (element[32] == '1');
 
 item.owner = {};
 item.owner.name = element[3];
 item.owner.id = element[16];
 item.owner.image = this._toProtocolRelativeURL(element[18]);
 
 if (element[43]) { // share post?
  item.share = {};
  item.share.owner = {};
  item.share.owner.name = element[43][0];
  item.share.owner.id = element[43][1];
  item.share.owner.photo = this._toProtocolRelativeURL(element[43][4]);
  item.share.id = element[39];
  item.share.html = element[4];
  item.share.url = this._toGooglePlusURL(element[77]);
  item.html = element[47];
 } else {
  item.html = element[4];
 }
 
 // Parse comments.
 item.comments = [];
 if (Array.isArray(element[7])) {
  element[7].forEach(function(element, i) {
   var comment = self._parseComment(element);
   item.comments.push(comment);
  });
 }
 
 return item;
};

/**
 * Parse out the comment object since it is mangled data which majority of the
 * entries are not needed.
 *
 * @param {Object.<Array>} element Google datastructure.
 * @return {Array.<Object} The parsed comment.
 */
GooglePlusAPI.prototype._parseComment = function(element) {
 var self = this;
 var comment = {};
 
 comment.id = element[4];
 comment.owner = {};
 comment.owner.id = element[6];
 comment.owner.name = element[1];
 comment.owner.photo = self._toProtocolRelativeURL(element[16]);
 comment.html = element[2];
 comment.time = element[3];
 if (element[14]) comment.time_edited = element[14];
 comment.plusone = {};
 comment.plusone.isPlused = (element[15][13] == '1');
 comment.plusone.count = (typeof element[15][12][0] == 'undefined') ? 0 : element[15][12][0][0];
 
 comment.plusone.users = [];
 if (Array.isArray(element[15][17])) {
  element[15][17].forEach(function(element, i) {
   var user = {};
   user.id = element[1];
   user.name = element[0];
   user.url = element[2];
   user.photo = self._toProtocolRelativeURL(element[3]);
   comment.plusone.users.push(user);
  });
 };
 
 return comment;
};

/**
 * Convert URL to full Google+ one.
 *
 * @param {string} url The URL to build.
 * @return {string} The built URL.
 */
GooglePlusAPI.prototype._toGooglePlusURL = function(url) {
 if (url.indexOf('https') == -1) {
  url = 'https://plus.google.com/' + url;
 }
 return url;
};

/**
 * Convert URL to protocol-relative one.
 *
 * @param {string} url The URL to convert.
 * @return {string} The converted URL.
 */
GooglePlusAPI.prototype._toProtocolRelativeURL = function(url) {
 url = url.replace('http://', '//');
 url = url.replace('https://', '//');
 return url;
};

/**
 * @return {boolean} True if session is valid to Google+.
 */
GooglePlusAPI.prototype.isAuthenticated = function() {
 return this._session != null;
};

/**
 * Initialize API.
 *
 * @param {function(boolean)} callback
 */
GooglePlusAPI.prototype.init = function(callback) {
 this._getSession(true);
 this._fireCallback(callback, this.isAuthenticated());
};

/**
 * Get the initial data from the user to recognize their ACL to be used in
 * other requests, especially in the profile requests.
 *
 * @param {function(Object)} callback
 */
GooglePlusAPI.prototype.lookupMyself = function(callback) {
 var self = this;
 this._requestService(function(response) {
  if (!self._isResponseSuccess(response)) {
   return self._fireCallback(
    callback,
    {status: false, error: response.error}
   );
  }
  
  var data = JSON.parse(response[1]);
  self._info = {};
  
  for (var i in data) {
   var detail = data[i];
   var emailParse = detail[20].match(/(.+) <(.+)>/);
   self._info.full_email = emailParse[0];
   self._info.name = emailParse[1];
   self._info.email = emailParse[2];
   self._info.id = detail[0];
   self._info.acl = '"' + (detail[1][14][0][0]).replace(/"/g, '\\"') + '"';
   self._info.circles = detail[10][1].map(function(element) {
    return {id: element[0], name: element[1]}
   });
   break;
  }
  
  self._fireCallback(callback, {status: true, data: self._info});
 }, this.INITIAL_DATA_API);
};

/**
 * Lookup the information, user and circle data for specified users.
 *
 * @param {function(Object)} callback
 * @param {Array.<string>} ids The profile ID.
 */
GooglePlusAPI.prototype.lookupUsers = function(callback, ids) {
 var self = this;
 var allParams = [];
 
 if (!Array.isArray(ids)) {
  ids = [ids];
 }
 ids.forEach(function(element, i) {
  allParams.push('[null,null,"' + element + '"]');
 });
 
 var users = {};
 var MAX_SLICE = 12;
 var indexSliced = 0;
 
 var doRequest = function() {
  var usersParam = allParams.slice(indexSliced, indexSliced + MAX_SLICE);
  if (usersParam.length == 0) {
   self._fireCallback(callback, {status: true, data: users});
   return;
  }
  indexSliced += usersParam.length;
  
  var params = '?n=6&m=[[' + usersParam.join(',') + ']]';
  var data = 'at=' + self._getSession();
  self._requestService(function(response) {
   if (!self._isResponseSuccess(response)) {
    return self._fireCallback(
     callback,
     {status: false, error: response.error}
    );
   }
   
   var usersArr = response[1];
   usersArr.forEach(function(element, i) {
    var userObj = self._parseUser(element[1], true);
    var user = userObj[0];
    var circles = userObj[1];
    users[user.id] = {
     user: user,
     circles: circles
    };
   });
   doRequest();
  }, self.LOOKUP_API + params, data);
 };
 doRequest();
};

/**
 * Lookup a profile information for a specified user.
 *
 * @param {function(Object)} callback
 * @param {string} id The profile ID.
 */
GooglePlusAPI.prototype.lookupProfile = function(callback, id) {
 var self = this;
 this._requestService(function(response) {
  if (!self._isResponseSuccess(response)) {
   return self._fireCallback(
    callback,
    {status: false, error: response.error}
   );
  }
  
  var data = response[1];
  
  var profile = {};
  profile.url = data[2][2];
  profile.photo = data[2][3];
  profile.name = {};
  profile.name.full= data[2][4][3];
  profile.name.first = data[2][4][1];
  profile.name.last = data[2][4][2];
  profile.isVerified = (data[2][4][4] == '1');
  profile.introduction = data[2][14][1];
  profile.posts = [];
  data[4][0].forEach(function(element, i) {
   profile.posts.push(self._parsePost(element));
  });
  
  self._fireCallback(callback, {status: true, data: profile});
 }, this.PROFILE_GET_API + id);
};

/**
 * Lookup post information.
 *
 * @param {function(Object)} callback
 * @param {string} postID The post ID.
 */
GooglePlusAPI.prototype.lookupPost = function(callback, postID) {
 var self = this;
 var params = '?updateId=' + postID;
 
 this._requestService(function(response) {
  if (!self._isResponseSuccess(response)) {
   return self._fireCallback(
    callback,
    {status: false, error: response.error}
   );
  }
  
  var item = self._parsePost(response[1]);
  self._fireCallback(callback, {status: true, data: item});
 }, this.ACTIVITY_API + params);
};

/**
 * Lookup all people in my all circles.
 *
 * @param {function(Object)} callback.
 */
GooglePlusAPI.prototype.lookupCircles = function(callback) {
 var self = this;
 this._requestService(function(response) {
  if (!self._isResponseSuccess(response)) {
   return self._fireCallback(
    callback,
    {status: false, error: response.error}
   );
  }
  
  // Parse circles.
  var circles = {};
  response[1].forEach(function(element, i) {
   var id = element[0][0];
   var name = element[1][0];
   var description = element[1][2];
   circles[id] = {};
   circles[id].name = name;
   circles[id].description = description;
  });
  
  // Parse users.
  var users = {};
  response[2].forEach(function(element, i) {
   var userObj = self._parseUser(element, true);
   var user = userObj[0];
   var circles = userObj[1];
   users[user.id] = {
    data: user,
    circles: circles
   };
  });
  
  self._fireCallback(callback, {status: true, data: {circles: circles, users: users}});
 }, this.CIRCLE_API);
};

/**
 * Post a comment to a specified post.
 *
 * @param {function(Object)} callback
 * @param {string} postID The post ID.
 * @param {string} comment The comment.
 */
GooglePlusAPI.prototype.postComment = function(callback, postID, comment) {
 var self = this;
 var now = new Date();
 var clientID = 'os:' + postID + ':' + now.getTime();
 var postData = 'itemId=' + postID + '&clientId=' + encodeURIComponent(clientID) + '&text=' + encodeURIComponent(comment) + '&timestamp_msec=' + now.getTime() + '&at=' + this._session;
 
 this._requestService(function(response) {
  if (!self._isResponseSuccess(response)) {
   return self._fireCallback(
    callback,
    {status: false, error: response.error}
   );
  }
  
  self._fireCallback(callback, {status: true, data: self._parseComment(response[1])});
 }, this.COMMENT_API, postData);
};

/**
 * Edit a specified comment.
 *
 * @param {function(Object)} callback
 * @param {string} postID The post ID.
 * @param {string} commentID The comment ID.
 * @param {string} comment The comment.
 */
GooglePlusAPI.prototype.editComment = function(callback, postID, commentID, comment) {
 var self = this;
 var postData = 'itemId=' + postID + '&commentId=' + commentID + '&text=' + encodeURIComponent(comment) + '&at=' + this._session;
 
 this._requestService(function(response) {
  if (!self._isResponseSuccess(response)) {
   return self._fireCallback(
    callback,
    {status: false, error: response.error}
   );
  }
  
  self._fireCallback(callback, {status: true, data: self._parseComment(response[1])});
 }, this.COMMENT_EDIT_API, postData);
};

/**
 * Delete a specified comment.
 *
 * @param {function(Object)} callback
 * @param {string} commentID The comment ID.
 */
GooglePlusAPI.prototype.deleteComment = function(callback, commentID) {
 var self = this;
 var postData = 'commentId=' + commentID + '&at=' + this._session;
 this._requestService(function(response) {
  if (!self._isResponseSuccess(response)) {
   return self._fireCallback(
    callback,
    {status: false, error: response.error}
   );
  }
  
  self._fireCallback(callback, {status: true, data: response});
 }, this.COMMENT_DELETE_API, postData);
};

// ----------------------------------------------------------------------------

/**
 * jQuery Library
 *
 * @version 1.7.1
 * @license http://jquery.org/license
 */
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// ----------------------------------------------------------------------------

// Finally, let's run this userscript!
var userscript = new GM48CO();
userscript.init();

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