☰

Thread reply button for Lithium communities

Add a "Thread Reply" button to forum post pages on many Lithium-based forums. This button initiates a reply to the original post instead of the linked post, even if you are not at the first page.

目前為 2014-07-21 提交的版本，檢視 最新版本。

  1. // ==UserScript==
  2. // @name           Thread reply button for Lithium communities
  3. // @namespace      http://sites.google.com/site/cerisesorbet/
  4. // @description    Add a "Thread Reply" button to forum post pages on many Lithium-based forums. This button initiates a reply to the original post instead of the linked post, even if you are not at the first page. 
  5. // @include        http://lithosphere.lithium.com/*
  6. // @include        http://bookclubs.barnesandnoble.com/*
  7. // @include        http://forums.verizon.com/*
  8. // @include        http://boards.adultswim.com/*
  9. // @include        http://community.secondlife.com/*
  10. // @version        20140721
  11. // @license        MIT License http://nrm.mit-license.org/2012
  12. // @copyright      (c) 2012-2014 Cerise Sorbet
  13. // ==/UserScript==
  14.  
  15. // return global thread ID, or 0 if missing
  16. function GetReplyThreadNumber() {
  17.   var links = document.getElementsByTagName('link');
  18.   if (links.length) {
  19.     var x; for (x = 0; x < links.length; x++) {
  20.       if (links[x].rel == 'canonical') {
  21.         var pathChop = links[x].href.split('/');
  22.         var tdpIndex = pathChop.indexOf('td-p');
  23.         if (~tdpIndex)
  24.           return Number(pathChop[tdpIndex + 1]);
  25.       }
  26.     }
  27.   }
  28.   return 0;
  29. }
  30.  
  31. function MakeThreadReplyButton() {
  32.   // Is there an active reply button? If not, give up.
  33.   var replySpan = document.getElementsByClassName('primary-action message-reply');
  34.   if (replySpan.length) {
  35.     var replyLink = replySpan[0].getElementsByTagName('a');
  36.     if (replyLink.length == 0)
  37.       return;
  38.   }
  39.   else
  40.       return;
  41.  
  42.   var replyThreadNumber = GetReplyThreadNumber();
  43.   if (replyThreadNumber) {
  44.     // create the new button
  45.     var threadReplyButton = document.createElement('span');
  46.     threadReplyButton.className = 'primary-action';
  47.     threadReplyButton.innerHTML = '<a class="lia-button lia-button-primary" style="margin-right: 10px" id="cerise-thread-reply-'
  48.       + replyThreadNumber + '" rel="nofollow:"><span>Thread Reply</span></button>';
  49.  
  50.     // squeeze in the new one
  51.     var bottomBar = document.getElementsByClassName("lia-menu-bar lia-menu-bar-bottom");
  52.     if (bottomBar.length) {
  53.       var buttonDiv = bottomBar[0].getElementsByClassName('lia-menu-bar-buttons');
  54.       if (buttonDiv.length) {
  55.         buttonDiv[0].style.display = ''; // div is there but typically hidden
  56.         buttonDiv[0].appendChild(threadReplyButton);
  57.  
  58.         // The button is installed, so add an event handler.
  59.         threadReplyButton.firstChild.addEventListener('click', DoThreadReply, true);
  60.       }
  61.     }
  62.   }
  63. }
  64.  
  65. function DoThreadReply() {
  66.   var threadNumber = this.id.replace(/^cerise-thread-reply-/, '');
  67.  
  68.   // Get the board_id to build a reply URL
  69.   var XMLReq = new XMLHttpRequest();
  70.   var XMLhref =  window.location.protocol + '//' + window.location.hostname
  71.     + '/restapi/vc/messages/id/' + threadNumber + '?xslt=json.xsl&amp;restapi.response_style=view';
  72.   XMLReq.open('GET', XMLhref, true);
  73.   XMLReq.onreadystatechange = function(e) {
  74.     if (XMLReq.readyState == 4) {
  75.       if(XMLReq.status != 200) { // HTTP error
  76.         alert('Unable to get reply link, HTTP error ' + XMLReq.status);
  77.       }
  78.       else {
  79.         try {
  80.           var article = JSON.parse(XMLReq.responseText);
  81.         }
  82.         catch(err) {
  83.           alert("Unable to get reply link, can't parse server response.");
  84.           return;
  85.         }
  86.  
  87.         if (!article.response.status) { // all responses should have this
  88.           alert('Unable to get reply link, missing REST response status');
  89.         }
  90.         else if (article.response.status != "success") { // internal Lithium error, like no permission or deleted message
  91.           errorText = article.response.error.code ? '[' + article.response.error.code  + '] ' : '[unknown] ';
  92.           if (article.response.error.message)
  93.             errorText += article.response.error.message;
  94.           alert("Can't get reply link, Lithium error:\n" + errorText);
  95.         }
  96.         else { // must be a success...
  97.           var message = article.response.message;
  98.           if (!message.board_id.$)
  99.             alert("Can't get message ID for thread reply");
  100.           else if (!message.board.href)
  101.             alert("Can't get board ID for thread reply");
  102.           else {
  103.             window.location.href = window.location.protocol + '//' + window.location.hostname
  104.               + '/t5/forums/replypage/board-id/'
  105.               + message.board.href.split('/').pop() + '/message-id/' +  message.board_id.$;
  106.           }
  107.         }
  108.       }
  109.     }
  110.   };
  111.  
  112.   XMLReq.send(null);
  113. }
  114.  
  115. MakeThreadReplyButton();