TumblrのDashboardで自分からReblogされた/自分のidを含んだpostを折り畳むスクリプト（"A smart dashboard is_mine"に依存）

a_smart_dashboard_have_my_id.user.js

// ==UserScript==
// @name           A smart dashboard have my id
// @namespace      http://mitukiii.jp/
// @description    TumblrのDashboardで自分からReblogされた/自分のidを含んだpostを折り畳むスクリプト
// @include        http://www.tumblr.com/*
// @include        https://www.tumblr.com/*
// ==/UserScript==
(function() {

  var my_id = document.querySelector('#user_channels a')
    .href.match(/\/tumblelog\/(.+?)$/i)[1];

  var isPost = function(elem) {
    return !!elem.id.match(/^post_[0-9]+$/i);
  };

  var replaceClassName = function(post) {
    post.className = post.className.trim();
    if (post.className.match(/not_mine/i)) {
      post.className = post.className.replace(/not_mine/i, 'is_mine');
    } else {
      post.className += ' is_mine';
    }
  };

  var replaceClassNameIfNotesHaveMyId = function(post) {
    var post_info = post.querySelector('.post_info');
    if (post_info &&
        post_info.textContent.trim().match(/(reblogged you:|あなたから)/i))
    {
      replaceClassName(post);
      return;
    }

    var blogs = post.getElementsByTagName('a');
    for (var i = blogs.length - 1; i >= 0; i -= 1) {
      if (blogs[i].textContent === my_id) {
        replaceClassName(post);
        return;
      }
    }
  };

  (function() {
    var posts = document.querySelectorAll('.post');
    for (var i = posts.length - 1, post = null; i >= 0; i -= 1) {
      post = posts[i];
      if (isPost(post)) {
        replaceClassNameIfNotesHaveMyId(post);
      }
    }
  })();

  document.addEventListener('DOMNodeInserted', function(event) {
    var elem = event.target;
    if (isPost(elem)) {
      replaceClassNameIfNotesHaveMyId(elem);
    }
  }, false);

})();