var lastPressed = '';
var treated = false;

function addOnLoadEvent(fnc)
{
  if ( typeof window.addEventListener != "undefined" )
    window.addEventListener( "load", fnc, false );
  else if ( typeof window.attachEvent != "undefined" ) {
    window.attachEvent( "onload", fnc );
  }
  else {
    if ( window.onload != null ) {
      var oldOnload = window.onload;
      window.onload = function ( e ) {
        oldOnload( e );
        window[fnc]();
      };
    }
    else 
      window.onload = fnc;
  }
}

function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}

var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();
addEvent(window,'unload',EventCache.flush);

function setKeyboardEvents( )
{

    var Tb = document.getElementById("wpTextbox1");
    if (!Tb) return;
    if (wgPageName.indexOf("/2016") != -1) 
    {
        addEvent(document.getElementById("wpTextbox1"), "keyup", showUp);
        addEvent(document.getElementById("wpTextbox1"), "keypress", showPress);
    }
	
}

function showPress(evt) {

    evt = (evt) ? evt : ((event) ? event : null);
         if (evt) {
            var typed;
           
            if (evt.which == null) { typed = String.fromCharCode(evt.keyCode); }    // IE
            else if (evt.which > 0) { typed = String.fromCharCode(evt.which); }   // others
            else {typed = null;} // special key
            if (typed == null) {evt.returnValue = true; return;}

           
            if (lastPressed == '' || lastPressed != typed) { treated = false; lastPressed = typed; evt.returnValue = true; return; }
            
            if(treated == false) 
            {

                lastPressed = typed;
            var star;
            switch (typed) 
            {
                case 'a':
                    star = "bgcolor="DAA520"|";
                    break;
                case 'b':
                    star = "bgcolor="C0C0C0"|";
                    break;
                case 'c':
                    star = "bgcolor="CC9966"|";
                    break;
                default:
                    star = "none";

            }

            if (star != "none") {
               
                if (navigator.appName == "Microsoft Internet Explorer")
                {
                   
                    var myRange = document.selection.createRange();
                    myRange.text = "|*|*|"

                    var fullRange = document.getElementById("wpTextbox1").createTextRange();
                    fullRange.findText("|*|*|");
                    fullRange.moveStart("character", -1);
                    fullRange.text = star;
                }
                else 
                {
                    var sel = window.getSelection();
                   
                    document.getElementById("wpTextbox1").selectionStart = document.getElementById("wpTextbox1").selectionStart - 1;
                    var startPos = document.getElementById("wpTextbox1").selectionStart;
                    var endPos = document.getElementById("wpTextbox1").selectionEnd;
                    
                    var rg = sel.getRangeAt(0);
                    rg.deleteContents();
                    
                    var newElement = document.createTextNode(star);
                    rg.insertNode(newElement);
                    document.getElementById("wpTextbox1").selectionStart = startPos + star.length;
                    document.getElementById("wpTextbox1").selectionEnd = startPos + star.length;

                    
                }
                treated = true;
                evt.returnValue = false;
                return;
            }
            
             
           
        }

    }

    if (treated) { evt.returnValue = false; }
    else { evt.returnValue = true; }
	return;

}


function showUp(evt)
{
    evt = (evt) ? evt : ((event) ? event : null);
    
    if (evt) {
        lastPressed = '';
        treated = false;
    }
	
}


// do event binding now that elements exist
addOnLoadEvent(setKeyboardEvents);