LOR spoiler

Add spoiler functionality

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        LOR spoiler
// @namespace   linux.org.ru
// @description Add spoiler functionality
// @include     https://linux.org.ru/*
// @include     https://www.linux.org.ru/*
// @version     2
// @grant       none
// ==/UserScript==

$script.ready('jquery',function(){
  console.log('LOR spoiler is ON');

  // spoiler
  var types = ['cut', 'code', 'pre'];
  var blocks = {
    cut: $('[id ^= cut]'),
    code: $('.code'),
    pre: $('pre:not([class])')
  };

  var total_block_cnt = blocks.cut.length + blocks.code.length + blocks.pre.length;
  var line_limit = total_block_cnt > 2 ? 5 : 15;

  var spoiler_prefix_on = '>>> ';
  var spoiler_prefix_off = '<<< ';

  var tpl = 
    '<span class="sign">'+
      '<span>'+ spoiler_prefix_on +'</span>'+
      '<a '+
      'id="spoiler-hide-{TYPE}_{ID}" '+
      'href="javascript:void(0);" '+
      'onClick="javascript:var block=$(\'#hide-{TYPE}_{ID}\'); var prefix=this.previousElementSibling;'+
        'if (block.css(\'display\')===\'none\') {'+
          'block.show(); prefix.innerText=\''+spoiler_prefix_off+'\'; } else {'+
          'block.hide(); prefix.innerText=\''+spoiler_prefix_on+'\'; };">'+
      '{TYPE}-spoiler'+
      '</a>'+
    '</span><br/>';

  // change content
  if (total_block_cnt > 0) {
    for (var i = 0; i < types.length; i++) {
      var TYPE = types[i];
      var ID = 0;
      
      blocks[TYPE].each(function() {
        // limit
        var no_hl = $(this).find('pre.no-highlight code');
        var cur_blk = no_hl.length > 0 ?  no_hl : $(this);
        if (cur_blk.text().split("\n").length <= line_limit) return;

        // add spoiler
        var spoiler = tpl.replace(/\{TYPE\}/g, TYPE).replace(/\{ID\}/g, ID);
        $(this).attr('id','hide-'+TYPE+'_'+ ID).hide();
        $(this).before(spoiler);
        
        ID++;
      });
    }
  }
});