====== About the script ======
  * Purpose : This script lets you subscribe and unsubscribe to an eventbus for each event.
  * Author : cdfa
  * Link: if needed, you may add a link here

====== How to use the script ======

Import this script, when you want to subscribe to a eventbus, copy/paste this in your script: LL.runScript("Eventbus", JSON.stringify({funct:"sub", obId:id_of_the_object_the_event_is_fired_on, name:"name of the event", action:EventHandler.action_you_want_to_execute, extra:any_extra_data_you_want_to_pass}))

so for example LL.runScript("eventBus", JSON.stringify({funct:"sub", obId:196666, name:"i.tap", action:EventHandler.RUN_SCRIPT, extra:LL.getScriptByName("External Editor Script Importer").getId()}))

Everything is save as a tag on the script, so if you delete the script it won't work anymore. If you want to unsubscribe to an eventbus just replace "sub" behind funct: with "unsub".

====== Script code ======
<sxh javascript>
var script = LL.getCurrentScript();
var event = LL.getEvent();
var src = event.getSource();
var data = JSON.parse(event.getData());
var cont = event.getContainer();
var i, id

function getOb(id){
  if(id.toString().length==6){
    ob=LL.getItemById(id);
  }else{
    ob=LL.getContainerById(id);
  }
  return ob
}

if(src=="RUN_SCRIPT"){
  if(data==null)throw "object is null";
  var obId=data.obId;
  var name=data.name;
  var tagName = obId+name;
  var eventBus = JSON.parse(script.getTag(tagName));
  if(eventBus==null)eventBus=[]
  var evHa = {action:data.action, data:data.extra};
  var reAdding = false
  for(i=0;i<eventBus.length;i++){
    if(eventBus[i].action==data.action && eventBus[i].data==data.extra){
      reAdding=true
      break;
    }
  }
  if(data.funct=="sub"){
    if(!reAdding){
      var ob = getOb(obId);
      if(eventBus==null)eventBus=[];
      var prop = ob.getProperties();
      var curEvha = prop.getEventHandler(name);
      var curAction = curEvha.getAction();
      var curData = curEvha.getData();
      if(curAction!=EventHandler.RUN_SCRIPT || curData!=script.getId().toString()){
        if(curAction!=0 && curAction!=EventHandler.UNSET)eventBus.push({action:curAction, data:curData});
        prop.edit().setEventHandler(name, EventHandler.RUN_SCRIPT, script.getId()).commit();
      }
      eventBus.push(evHa);
    }
  }else if(data.funct=="unsub"){
    if(reAdding){
      eventBus.splice(i, 1);
    }
    if(eventBus.length==0){
      var ob = getOb(obId);
      ob.getProperties().edit().setEventHandler(name, EventHandler.UNSET, null).commit();
      ob.setTag(tagName, null);
    }
  }
  script.setTag(tagName, JSON.stringify(eventBus));
}else{
  var name;
  switch(src.slice(0, 1)){
  case "K":
    name = src.slice(2).toLowerCase()+"Key";
    if(src.slice(-1)=="L"){
      name = "long"+src.slice(2, 3)+src.slice(3,6).toLowerCase()+"Key";
    }
    break;
  case "I":
    if(src.slice(-5)=="CLICK"){
      if(src.length==7){
        name = "i.tap";
      }else{
        name="i.longTap";
      }
    }else if(src.slice(2,7)=="SWIPE"){
      name="i.swipe"+ src.slice(8,9)+src.slice(9).toLowerCase();
    }else{
      name="i."+src.slice(2).toLowerCase();
    }
    break
  case "C":
    if(src.slice(-5)=="CLICK"){
      if(src.length==7){
        name = "bg.tap";
      }else if(src.length==12){
        name="bg.longTap";
      }else{
        name="bg.doubleTap";
      }
    }else if(src.slice(2,7)=="SWIPE"){
      if(src.slice(7, 8)=="2"){
        name="swipe2"+src.slice(9,10)+src.slice(10).toLowerCase();
      }else{
        name="swipe"+src.slice(8,9)+src.slice(9).toLowerCase();
      }
    }else if(src=="C_LOADED"){
      name="load";
    }else if(src=="C_POSITION_CHANGED"){
      nams="posChanged";
    }else{
      name=src.slice(2).toLowerCase();
    }
    break;
  case "P":
    name="orientationPortrait";
    break;
  case "L":
    name="orientationLandscape";
    break;
  }
  var cont = event.getContainer();
  if(cont==null) cont=LL.getCurrentDesktop();
  var id = cont.getId();
  var item=event.getItem();
  if(item==null){
    var eventBus = JSON.parse(script.getTag(id+name));
    for(i=0;i<eventBus.length;i++){
      var action = eventBus[i].action
      var data = eventBus[i].data
      if(action==EventHandler.RUN_SCRIPT){
        if(typeof data=="number"){
          id = data
        }else{
          var slash = data.indexOf("/")
          id = data.slice(0,slash)
          data = data.slice(slash+1)
        }
        LL.runScript(LL.getScriptById(id).getName(), data)
      }else{
        LL.runAction(action, data);
      }
    }
  }else{
    var id=item.getId()
    var eventBus = JSON.parse(script.getTag(id+name))
    for(i=0;i<eventBus.length;i++){
      LL.runAction(eventBus[i].action, item, eventBus[i].data);
    }
  }
}

</sxh>