(function(){

   if (typeof JSROOT != "object") {
      var e1 = new Error("go4.js requires JSROOT to be already loaded");
      e1.source = "go4.js";
      throw e1;
   }

   GO4 = {};

   GO4.version = "5.3.x";

   // use location to load all other scripts when required
   GO4.source_dir = function() {
      var scripts = document.getElementsByTagName('script');

      for (var n in scripts) {
         if (scripts[n]['type'] != 'text/javascript') continue;

         var src = scripts[n]['src'];
         if ((src == null) || (src.length == 0)) continue;

         var pos = src.indexOf("html/go4.js");
         if (pos<0) continue;
         if (src.indexOf("JSRootCore")>=0) continue;
         console.log('Set GO4.source_dir to ' + src.substr(0, pos));
         return src.substr(0, pos);
      }
      return "";
   }();


   if (!JSROOT.TBasePainter.prototype.get_main_id)
      JSROOT.TBasePainter.prototype.get_main_id = function() {
         var elem = this.select_main();
         return elem.empty() ? "" : elem.attr("id");
      }

   // ==================================================================================

   GO4.DrawAnalysisRatemeter = function(divid, itemname) {

      var html = "<div style='padding-top:2px'>";
      html += "<img class='go4_logo' style='vertical-align:middle;margin-left:5px;margin-right:5px;' src='go4sys/icons/go4logorun4.gif' alt='logo'></img>";
      html += "<label class='event_source' style='border: 1px solid gray; font-size:large; vertical-align:middle; padding-left:3px; padding-right:3px;'>file.lmd</label> ";
      html += "<label class='event_rate' style='border: 1px solid gray; font-size:large; vertical-align:middle; background-color: grey'; padding-left:3px; padding-right:3px;>---</label> Ev/s ";
      html += "<label class='aver_rate' style='border: 1px solid gray; font-size:large; vertical-align:middle; padding-left:3px; padding-right:3px;'>---</label> Ev/s ";
      html += "<label class='run_time' style='border: 1px solid gray; font-size:large; vertical-align:middle; padding-left:3px; padding-right:3px;'>---</label> s ";
      html += "<label class='total_events' style='border: 1px solid gray; font-size:large; vertical-align:middle; padding-left:3px; padding-right:3px;'>---</label> Events ";
      html += "<label class='analysis_time' style='border: 1px solid gray; font-size:large; vertical-align:middle; padding-left:3px; padding-right:3px;'>time</label>";
      html += "</div>";

      $('#'+divid).css('overflow','hidden')
                  .css('padding-left','5px')
                  .css('display', 'inline-block')
                  .css('white-space', 'nowrap')
                  .html(html);

      // use height of child element
      JSROOT.Painter.AdjustLayout(null, $('#'+divid+' div').height()+4, false);

      var xreq = null, was_running = null;

      function UpdateRatemeter() {
         if (xreq!=null) return;

         xreq = JSROOT.NewHttpRequest(itemname+"/root.json.gz", 'object', function(res) {
            xreq = null;

            if (res==null)
               return $('#'+divid + " .event_rate").css('background-color','grey');

            $('#'+divid + " .event_rate").css('background-color', res.fbRunning ? 'lightgreen' : 'red');
            if (was_running != res.fbRunning)
               $('#'+divid + " .go4_logo").attr("src", res.fbRunning ? 'go4sys/icons/go4logorun4.gif' : 'go4sys/icons/go4logo_t.png');
            was_running = res.fbRunning;

            $('#'+divid + " .event_source").text(res.fxEventSource == "" ? "<source>" : res.fxEventSource);
            $('#'+divid + " .event_rate").text(res.fdRate.toFixed(1));
            $('#'+divid + " .aver_rate").text((res.fdTime > 0 ? res.fuCurrentCount / res.fdTime : 0).toFixed(1));
            $('#'+divid + " .run_time").text(res.fdTime.toFixed(1));
            $('#'+divid + " .total_events").text(res.fuCurrentCount);
            $('#'+divid + " .analysis_time").text(res.fxDateString == "" ? "<datime>" : res.fxDateString);
         });

         xreq.send(null);
      }

      setInterval(UpdateRatemeter, 2000);
   }


   GO4.MakeMsgListRequest = function(hitem, item) {
      var arg = "&max=2000";
      if ('last-id' in item) arg+= "&id="+item['last-id'];
      return 'exe.json.gz?method=Select' + arg;
   }

   GO4.AfterMsgListRequest = function(hitem, item, obj) {
      if (!item) return;

      if (!obj) {
         delete item['last-id'];
         return;
      }
      // ignore all other classes
      if (obj._typename != 'TList') return;

      obj._typename = "TGo4MsgList";

      if (obj.arr.length>0) {
         var duplicate = (('last-id' in item) && (item['last-id'] == obj.arr[0].fString));

         item['last-id'] = obj.arr[0].fString;

         // workaround for snapshot, it sends always same messages many times
         if (duplicate) obj.arr.length = 1;

         // add clear function for item
         if (!('clear' in item))
            item['clear'] = function() { delete this['last-id']; }
      }
   }


   GO4.MsgListPainter = function(lst) {
      JSROOT.TBasePainter.call(this);

      this.lst = lst;

      return this;
   }

   GO4.MsgListPainter.prototype = Object.create( JSROOT.TBasePainter.prototype );

   GO4.MsgListPainter.prototype.RedrawObject = function(obj) {
      this.lst = obj;
      this.Draw();
      return true;
   }

   GO4.MsgListPainter.prototype.Draw = function() {
      if (!this.lst) return;

      var frame = this.select_main();

      var main = frame.select("div");
      if (main.empty())
         main = frame.append("div")
                     .style('max-width','100%')
                     .style('max-height','100%')
                     .style('overflow','auto');

      var old = main.selectAll("pre");
      var newsize = old.size() + this.lst.arr.length - 1;

      // in the browser keep maximum 2000 entries
      if (newsize > 2000)
         old.select(function(d,i) { return i < newsize - 2000 ? this : null; }).remove();

      for (var i=this.lst.arr.length-1;i>0;i--)
         main.append("pre").style('margin','3px').html(this.lst.arr[i].fString);

      // (re) set painter to first child element
      this.SetDivId(this.divid);

   }

   GO4.DrawMsgList = function(divid, lst, opt) {
      var painter = new GO4.MsgListPainter(lst);
      painter.SetDivId(divid);
      painter.Draw();
      return painter.DrawingReady();
   }

   GO4.drawAnalysisTerminal = function(hpainter, itemname) {
      var url = hpainter.GetOnlineItemUrl(itemname);
      var frame = hpainter.GetDisplay().FindFrame(itemname, true);
      if (!url || !frame) return null;

      var divid = d3.select(frame).attr('id');

      var h = $("#"+divid).height(), w = $("#"+divid).width();
      if ((h<10) && (w>10)) $("#"+divid).height(w*0.7);

      var player = new JSROOT.TBasePainter();
      player.url = url;
      player.hpainter = hpainter;
      player.itemname = itemname;
      player.draw_ready = true;
      player.needscroll = false;

      player.DrawReady = function() {
         if(this.needscroll) {
            this.ClickScroll();
            this.needscroll = false;
         }
         this.draw_ready = true;
      }

      player.ProcessTimer = function() {
         var subid = "anaterm_output_container";
         if ($("#" + subid).length == 0) {
            // detect if drawing disappear
            clearInterval(this.interval);
            this.interval = null;
            return;
         }
         if (!this.draw_ready)
            return;

         var msgitem = this.itemname.replace("Control/Terminal", "Status/Log");

         this.draw_ready = false;

         this.hpainter.display(msgitem, "divid:" + subid, this.DrawReady.bind(this));
      }

      player.ClickCommand = function(kind) {
         var pthis = this;
         this.hpainter.ExecuteCommand(this.itemname.replace("Terminal",
               "CmdExecute"), function() {
            pthis.needscroll = true
         }, kind);
      }

      player.ClickClear = function() {
         // console.log("Clear terminal");
         document.getElementById("anaterm_output_container").firstChild.innerHTML = "";
      }

      player.ClickScroll = function() {
         //  inner frame created by hpainter has the scrollbars, i.e. first child
         var disp = $("#anaterm_output_container").children(":first");
         disp.scrollTop(disp[0].scrollHeight - disp.height());
      }


      player.fillDisplay = function(id) {
          this.SetDivId(id);
          this.interval = setInterval(this.ProcessTimer.bind(this), 2000);

          $(id + " .go4_clearterm")
              .button({text: false, icons: { primary: "ui-icon-blank MyTermButtonStyle"}})
              .click(this.ClickClear.bind(this))
              .children(":first") // select first button element, used for images
              .css('background-image', "url(" + GO4.source_dir + "icons/clear.png)");


          $(id + " .go4_endterm")
          .button({text: false, icons: { primary: "ui-icon-blank MyTermButtonStyle"}})
          .click(this.ClickScroll.bind(this))
            .children(":first") // select first button element, used for images
            .css('background-image', "url(" + GO4.source_dir + "icons/shiftdown.png)");



          $(id + " .go4_printhistos")
          .button({text: false, icons: { primary: "ui-icon-blank MyTermButtonStyle"}})
          .click(this.ClickCommand.bind(this,"@PrintHistograms()"))
            .children(":first") // select first button element, used for images
            .css('background-image', "url(" + GO4.source_dir + "icons/hislist.png)");

          $(id + " .go4_printcond").button()
          .button({text: false, icons: { primary: "ui-icon-blank MyTermButtonStyle"}})
          .click(this.ClickCommand.bind(this,"@PrintConditions()"))
            .children(":first") // select first button element, used for images
            .css('background-image', "url(" + GO4.source_dir + "icons/condlist.png)");

          var pthis = this;

          $("#go4_anaterm_cmd_form").submit(
              function(event) {
                 var command = pthis.itemname.replace("Terminal", "CmdExecute");
                 var cmdpar=document.getElementById("go4_anaterm_command").value;
                 console.log("submit command - " + cmdpar);
                 pthis.hpainter.ExecuteCommand(command,  function(){pthis.needscroll=true}, cmdpar);
                 event.preventDefault();
              });


          $(id + " .go4_executescript").button()
           .button({text: false, icons: { primary: "ui-icon-blank MyTermButtonStyle"}})
            .children(":first") // select first button element, used for images
            .css('background-image', "url(" + GO4.source_dir + "icons/macro_t.png)");
      }


      player.CheckResize = function(force) {
         // console.log("CheckResize..., force=" + force);
      }

      $("#"+divid).load(GO4.source_dir + "html/terminal.htm", "", player.fillDisplay.bind(player, divid));

      return player;
   }


   // ==============================================================================

   var canvsrc = GO4.source_dir + 'html/go4canvas.js;';

   JSROOT.addDrawFunc("TGo4WinCond", { script: canvsrc + GO4.source_dir + 'html/condition.js', func: 'GO4.drawGo4Cond' }, ";editor");
   JSROOT.addDrawFunc("TGo4PolyCond", { script: canvsrc + GO4.source_dir + 'html/condition.js', func: 'GO4.drawGo4Cond' }, ";editor");
   JSROOT.addDrawFunc("TGo4ShapedCond", { script: canvsrc + GO4.source_dir + 'html/condition.js', func: 'GO4.drawGo4Cond' }, ";editor");
   JSROOT.addDrawFunc("TGo4Marker", { script: canvsrc, func: 'GO4.drawGo4Marker' }, "");

   JSROOT.addDrawFunc("TGo4AnalysisWebStatus", { script: GO4.source_dir + 'html/analysiseditor.js', func: 'GO4.drawGo4AnalysisStatus' }, "editor");

   JSROOT.addDrawFunc("TGo4MsgList", GO4.DrawMsgList, "");

   JSROOT.addDrawFunc({ name: "TGo4MbsEvent", noinspect: true });
   JSROOT.addDrawFunc({ name: "TGo4EventElement", noinspect: true });

})();