fastladder_fixed_item_height.user.js

// ==UserScript==
// @name           fastladder_fixed_item_height.user.js
// @namespace      http://d.hatena.ne.jp/edvakf/
// @description    Limit the height of items on LDR/Fastladder
// @include        http://reader.livedoor.com/reader/
// @include        http://reader.livedoor.com/public/*
// @include        http://fastladder.com/reader/
// ==/UserScript==
// The "IE OK?" lines **might** work for IE as well

(function(w){
  //////// config ////////
  var cfg = {
    item_style : ['max-height:400px;','overflow-x:hidden;','overflow-y:auto;'],
    //down_key : 'd',
    //up_key : 'u|D',
    toggle_key : 'i',
    //item_scroll_px : 200,
    //integrated_scroll : true,
    //integrated_next_feed : true
  }
  ///////////////////////

  if(undefined !== w.Components){ // for Firefox
    var style = document.createElement('style');
    style.innerHTML = '.item{'+cfg.item_style.join('')+'}';
    document.getElementsByTagName('head')[0].appendChild(style);
  }else{// for Opera, Safari
    w.LDR_addStyle('.item',cfg.item_style);
  }

  w.LDR_addStyle('.item.expanded',['max-height:none;','height:auto;','overflow-x:auto;','overflow-y:auto;']);
  w.LDR_addStyle('.item.blocked',['max-height:none;','height:auto;','overflow-x:auto;','overflow-y:auto;']); // to be compatible with LDR-ad-entry-blocker-mod.user.js 
  w.addEventListener('load',function(){
    var keyfuncs = w.Keybind._keyfunc;
    var j_func = keyfuncs['j'], s_func = keyfuncs['s'], k_func = keyfuncs['k'], a_func = keyfuncs['a'];
    var currentItem = function(){return w.get_active_item(true).element.parentNode.parentNode.parentNode;};
    function item_down(){
      if(w.check_wait()) return;
      var e = currentItem();
      if(w.hasClass(e,'expanded')) return;
      if(e && e.clientHeight+e.scrollTop<e.scrollHeight) e.scrollTop+=(cfg.item_scroll_px||100);
      else if(cfg.integrated_scroll){
        if(w.Control.next_item_offset()!=null) j_func(); 
        else if(cfg.integrated_next_feed) s_func();
      }
    }   
    function item_up(){
      if(w.check_wait()) return;
      var e = currentItem();
      if(w.hasClass(e,'expanded')) return;
      if(e && e.scrollTop) e.scrollTop-=(cfg.item_scroll_px||100);
      else if(cfg.integrated_scroll){
        if(w.$('right_container').scrollTop!=0) k_func(); 
        else if(cfg.integrated_next_feed) a_func();
      }
    }
    function item_style_toggle(){
      if(w.check_wait()) return;
      var e = currentItem();
      if(e) w.hasClass(e,'expanded') ? w.removeClass(e,'expanded') : w.addClass(e,'expanded');
    }
    if(cfg.down_key)w.Keybind.add(cfg.down_key,item_down);
    if(cfg.up_key)w.Keybind.add(cfg.up_key,item_up);
    if(cfg.toggle_key)w.Keybind.add(cfg.toggle_key,item_style_toggle);
  },false);
})(this.unsafeWindow||window);