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vk.com mark as read

mark posts as read (помечает посты как прочитанные)

当前为 2017-03-03 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        vk.com mark as read
  3. // @namespace   limizin.userscripts
  4. // @description mark posts as read (помечает посты как прочитанные)
  5. // @include     https://vk.com*
  6. // @version     1.1
  7. // @grant       GM_setValue
  8. // @grant       GM_getValue
  9. // ==/UserScript==
  10. (function () {
  11.   postwall = document.getElementById('page_wall_posts');
  12.   if (!postwall)
  13.   return;
  14.   if (!document.querySelector('style#usernameReadPost')) {
  15.     stl = document.querySelector('head').appendChild(document.createElement('style'));
  16.     stl.id = 'usernameReadPost';
  17.     stl.innerHTML = '.usernameReadPost, .usernameReadPost ~ * {background-color: silver !important;}';
  18.   } //----
  19.  
  20.   function hashCode(value) {
  21.     var hash = 0;
  22.     if (value.length == 0) return hash;
  23.     for (i = 0; i < value.length; i++) {
  24.       char = value.charCodeAt(i);
  25.       hash = ((hash << 5) - hash) + char;
  26.       hash = hash & hash; // Convert to 32bit integer
  27.     }
  28.     return hash;
  29.   }
  30.   function reverse(value) {
  31.     return value.split('').reverse().join('');
  32.   }
  33.   storageKey = 'usernameReadPost/' + hashCode(location.pathname)+hashCode(reverse(location.pathname));
  34.   //top_shadow_post_id = window.localStorage.getItem(storageKey);
  35.   top_shadow_post_id = GM_getValue(storageKey);
  36.   //---
  37.   function markRead() {
  38.     sel = document.getSelection();
  39.     if (!sel.isCollapsed) {
  40.       var xpath = './ancestor::div[contains(@class, "post") and not(@id="page_wall_posts")]';
  41.       var post = document.evaluate(xpath, sel.focusNode, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
  42.       if (post) {
  43.         post.className += ' usernameReadPost';
  44.         //window.localStorage.setItem(storageKey, post.getAttribute('id'));
  45.         GM_setValue(storageKey, post.getAttribute('id'));
  46.         var prevPostsXpath = './preceding-sibling::div[contains(@class, "post")]';
  47.         var prevPosts = document.evaluate(prevPostsXpath, post, null, XPathResult.ANY_TYPE, null);
  48.         var prevPost = prevPosts.iterateNext();
  49.         while (prevPost) {
  50.           prevPost.className = prevPost.className.replace('usernameReadPost', '');
  51.           prevPost = prevPosts.iterateNext();
  52.         }
  53.       }
  54.     }
  55.   }
  56.   function scrollToRead(event) {
  57.     var post = document.querySelector('div.usernameReadPost');
  58.     if (post) {
  59.       var postYOffset = post.offsetTop;
  60.       var median = window.innerHeight / 2;
  61.       var scrollTo = postYOffset - median;
  62.       if (scrollTo < 0) {
  63.         scrollTo = 0;
  64.       }
  65.       window.scrollTo(0, scrollTo);
  66.     }
  67.   }
  68.   shadow = false;
  69.   function shadowRead(event) {
  70.     if (shadow || !top_shadow_post_id)
  71.     return;
  72.     var post = document.getElementById(top_shadow_post_id);
  73.     if (post) {
  74.       post.className += ' usernameReadPost';
  75.       shadow = true;
  76.       postwall.removeEventListener('DOMNodeInserted', shadowRead);
  77.     }
  78.   }
  79.   function createButton(content, handler, title) {
  80.     var btn = document.createElement('button');
  81.     btn.textContent = content;
  82.     btn.onclick = handler;
  83.     btn.title = title;
  84.     btn.style.backgroundColor = '#507299';
  85.     btn.style.color = '#ffffff';
  86.     btn.style.border = 'thin solid #C4C4C4';
  87.     if (navigator.userAgent.toLowerCase().indexOf('firefox') > - 1) {
  88.       btn.style.paddingBottom = '2px';
  89.     }
  90.     btn.style.cursor = 'pointer';
  91.     return btn;
  92.   }
  93.   var buttonBlock = document.createElement('div');
  94.   buttonBlock.style.display = 'inline';
  95.   buttonBlock.style.marginLeft = '-60px';
  96.   buttonBlock.style.marginRight = '7px';
  97.   buttonBlock.style.marginTop = '10px';
  98.   buttonBlock.style.float = 'left';
  99.   //buttonBlock.style = 'margin-left: -60px; margin-right:7px; ';
  100.   var scrollToReadBtn = createButton('>', scrollToRead, 'scroll to read');
  101.   buttonBlock.appendChild(scrollToReadBtn);
  102.   //mark read button
  103.   var markReadBtn = createButton('+', markRead, 'mark as read');
  104.   markReadBtn.style.borderLeft = 'none';
  105.   buttonBlock.appendChild(markReadBtn);
  106.   document.querySelector('div.head_nav_item').appendChild(buttonBlock);
  107.   //post wall
  108.   postwall.addEventListener('DOMNodeInserted', shadowRead);
  109.   //run
  110.   shadowRead(null);
  111. }) ();