Kita-Yen_4chan.user.js

   1 // ==UserScript==
   2 // @name Kita-Yen 4Chan
   3 // @description Add kita to your post with ctr+"k" and Yen with ctr+"\"
   4 // @version 2.1
   5 // @match *://boards.4chan.org/*
   6 // @grant none
   7 // @namespace https://greasyfork.org/users/125336
   8 // @updateURL    https://github.com/ECHibiki/4chan-UserScripts/raw/master/Kita-Yen_4chan.user.js
   9 // @downloadURL  https://github.com/ECHibiki/4chan-UserScripts/raw/master/Kita-Yen_4chan.user.js
  10
  11 // ==/UserScript==
  12
  13 //insertion logic
  14 function colorCharacters(root){
  15     if(root.nodeType !== Node.ELEMENT_NODE){
  16         return;
  17     }
  18
  19     var nodes = Array.from(root.getElementsByClassName('postMessage'));
  20     if(root.classList.contains('postmessage')){
  21         nodes.unshift(root);
  22     }
  23
  24     nodes.forEach(function(node){
  25         if(node.textContent.indexOf('\xa5') <= -1 && node.textContent.indexOf("ｷﾀ━━━(ﾟ∀ﾟ)━━━!!") <= -1){
  26             return;
  27         }
  28         var txtItterator = document.createNodeIterator(node, NodeFilter.SHOW_TEXT);
  29         var txtNode;
  30         while((txtNode = txtItterator.nextNode(txtNode))){
  31             var inside_node = searchYen(txtNode);
  32             if(inside_node !== "-") {
  33                 searchKita(inside_node.firstChild);
  34                 txtItterator.nextNode();
  35             }
  36
  37             var inside_node = searchKita(txtNode);
  38             if(inside_node !== "-") {
  39                 searchYen(inside_node.firstChild);
  40                 txtItterator.nextNode();
  41             }
  42         }
  43     });
  44 }
  45
  46 var searchYen = function(text_node){
  47     var hashIndex = text_node.textContent.indexOf('\xa5');
  48     if(hashIndex > -1){
  49         var splitNode = text_node.splitText(hashIndex);
  50
  51         var span = document.createElement('span');
  52         span.className = "the_m_word";
  53
  54         span.appendChild(splitNode);
  55         text_node.parentNode.insertBefore(span, text_node.nextSibling);
  56
  57         return span;
  58     }
  59     return "-";
  60 };
  61
  62 var searchKita = function(text_node){
  63     var kIndex = text_node.textContent.indexOf("ｷﾀ━━━(ﾟ∀ﾟ)━━━!!");
  64     if(kIndex > -1){
  65         var far_split_note =  text_node.splitText(kIndex + "ｷﾀ━━━(ﾟ∀ﾟ)━━━!!".length);
  66         var splitNode = text_node.splitText(kIndex);
  67
  68         var span = document.createElement('span');
  69         span.className = "the_k_word";
  70
  71         span.appendChild(splitNode);
  72         text_node.parentNode.insertBefore(span, text_node.nextSibling);
  73         return span;
  74     }
  75     return "-";
  76 };
  77
  78 //color styling
  79 var addStyle = function(){
  80     var style = document.createElement("STYLE");
  81     style.innerHTML = ".the_m_word{color:#9370DB} \n.the_k_word{color:#555555}";
  82     document.head.appendChild(style);
  83 };
  84
  85 //injection
  86 colorCharacters(document.body);
  87 addStyle();
  88
  89 new MutationObserver(function(mutations){
  90     mutations.forEach(function(mutation){
  91         mutation.addedNodes.forEach(colorCharacters);
  92     });
  93 }).observe(document.body, {childList: true, subtree: true});
  94
  95
  96 //hotkeys
  97 var listener_obj = {};
  98 window.addEventListener("keydown", function(e){
  99     listener_obj[e.keyCode] = true;
 100
 101     var node = document.activeElement;
 102     if (listener_obj[17] && listener_obj[75]){
 103         e.preventDefault();
 104         insertAtPos(node, 'ｷﾀ━━━(ﾟ∀ﾟ)━━━!!');
 105     }
 106     if (listener_obj[17] && listener_obj[220]){
 107         e.preventDefault();
 108         insertAtPos(node, '\xa5');
 109     }
 110 }, {passive:false, capture:false, once:false});
 111
 112 window.addEventListener("keyup", function(e){
 113     listener_obj[e.keyCode] = false;
 114 }, {passive:false, capture:false, once:false});
 115
 116 var insertAtPos = function(node, char){
 117     var sel_start = node.selectionStart;
 118     var sel_end = node.selectionEnd;
 119
 120     n_tc = node.value;
 121     node.value = n_tc.substr(0, sel_start) + char + n_tc.substr(sel_end);
 122 };
 123
 124