//Sandbox Engine
//PHP AJAX JSON Controller and front-end functions file

//Used for convenient internal variables
var SB_System=new Object();

//If you ever set systemLock to true, then this prevents user interface actions from taking place
SB_System.systemLock=false;

$(document).ready(function(){
	var size_num = readCookie("fontsize");
	if (size_num != null) {
	  for(i=1;i<=3;i++) {
        $(".size-"+i).removeClass('active');
      }
	  if (size_num == 2) 
	    increaseFontSize("120%");
	  if (size_num == 3) 
	    increaseFontSize("125%");
      $(".size-"+size_num).addClass('active');
	}
});

//This is front-end input controller. Data can be whatever you want, 
//you can use it in different context depending on action.
function uiAction(action,data){
	//input is an object used to be sent to AJAX backend.
	var input=new Object();
	if(SB_System.systemLock==false){
		switch(action){
		
			//This is a template and shows how the system works
			case 'simpleExample':	
				//Most UI actions are usually simple and don't require AJAX, this simply throws an alert
				alert('Hello world!');
			break;
			
			//This is a template and shows how the system works
			case 'ajaxExample':			
				//this does not have to be the same as action, but usually is
				input['testvariable']='testing';
				executeAjaxAction(action,input);
			break;
			
			case 'reader':			
				SB_Reader(data);
			break;
			
			default:
				alert('UI ERROR: This action ['+action+'] does not exist in user interface!');
		}
	}
}

//This should not be modified, it is standardized function for sending data to backend
//and retreiving the JSON string before forwarding it to frontend callback
function executeAjaxAction(action, rawdata, ajaxurl){
	if(!ajaxurl){ ajaxurl='/controllers/ajax.php'; }
	//data is an array or an object serialized for use in a URL
	data=$.param(rawdata);
	//Lock is used to prevent action spamming
	//If you don't want to lock AJAX actions, then comment this out or at least display an error
	if(SB_System['lock_'+action]!=1){
		SB_System['lock_'+action]=1;
		$.ajax({
			type: 'POST',
			url: ajaxurl,
			dataType: 'json',
			cache: false,
			async: true,
			data: ({action : action, data : data}),
			beforeSend: function(header){
				header.overrideMimeType('text/plain');
				header.setRequestHeader('From',SB_SandboxKey);
			},
			success: function(json){
				//If successful the JSON returned from backend is forwarded to be parsed by frontend actions
				parseAjaxReturn(json);
				SB_System['lock_'+action]=0;
			},
			error: function(obj,msg,detailedmsg){
				//In case there was any unexpected error in the backend (PHP errors and whatnot), alert everything
				alert('ENGINE ERROR: '+msg+' ('+detailedmsg+')');
				SB_System['lock_'+action]=0;
			}
		});
	} else {
		//You can comment this alert out
		alert('ENGINE ERROR: This action is already in progress');
	}
}

//This function takes the AJAX returned JSON and executes actions depending on the type
//You can call new user interface actions from here as well
function parseAjaxReturn(json){
	//If backend defines an error and a message for the error, alert this
	if(json['error']==1){
		alert('ERROR: '+json['message']);
	} else {
		switch(json['action']){
		
			//this is used for example, it simply throws an alert
			case 'exampleAction':
				alert(json['message']);
			break;
			
			//Do not remove this, it is used by backend engine in case session needs to be refreshed
			case 'refresh':
				document.location.href=document.location.href;
			break;
			
			//Backend should always define action to be 'none' if no callback is defined
			case 'none':
			break;
			
			//In case no action was defined, alert an error
			default:
				alert('UI ERROR: Callback action ['+json['action']+'] does not exist in user interface!');
		}
	}
}

function increaseFontSize(precent, num) {
   var p = document.getElementsByTagName('body');
   for(i=0;i<p.length;i++) {
      p[i].style.fontSize = precent;
   }
   document.cookie = 'fontsize='+num+'; expires=Thu, 2 Aug 2090 20:47:11 UTC; path=/';
   for(i=1;i<=3;i++) {
     $(".size-"+i).removeClass('active');
   }
   $(".size-"+num).addClass('active');
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
function ControlVersion()
{
	var version;
	var axo;
	var e;
	// NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry
	try {
		// version will be set for 7.X or greater players
		axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
		version = axo.GetVariable("$version");
	} catch (e) {
	}
	if (!version)
	{
		try {
			// version will be set for 6.X players only
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
			
			// installed player is some revision of 6.0
			// GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
			// so we have to be careful. 
			
			// default to the first public version
			version = "WIN 6,0,21,0";
			// throws if AllowScripAccess does not exist (introduced in 6.0r47)		
			axo.AllowScriptAccess = "always";
			// safe to call for 6.0r47 or greater
			version = axo.GetVariable("$version");
		} catch (e) {
		}
	}
	if (!version)
	{
		try {
			// version will be set for 4.X or 5.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
			version = axo.GetVariable("$version");
		} catch (e) {
		}
	}
	if (!version)
	{
		try {
			// version will be set for 3.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
			version = "WIN 3,0,18,0";
		} catch (e) {
		}
	}
	if (!version)
	{
		try {
			// version will be set for 2.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
			version = "WIN 2,0,0,11";
		} catch (e) {
			version = -1;
		}
	}
	
	return version;
}
// JavaScript helper required to detect Flash Player PlugIn version information
function GetSwfVer(){
	// NS/Opera version >= 3 check for Flash plugin in plugin array
	var flashVer = -1;
	
	if (navigator.plugins != null && navigator.plugins.length > 0) {
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
			var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
			var descArray = flashDescription.split(" ");
			var tempArrayMajor = descArray[2].split(".");			
			var versionMajor = tempArrayMajor[0];
			var versionMinor = tempArrayMajor[1];
			var versionRevision = descArray[3];
			if (versionRevision == "") {
				versionRevision = descArray[4];
			}
			if (versionRevision[0] == "d") {
				versionRevision = versionRevision.substring(1);
			} else if (versionRevision[0] == "r") {
				versionRevision = versionRevision.substring(1);
				if (versionRevision.indexOf("d") > 0) {
					versionRevision = versionRevision.substring(0, versionRevision.indexOf("d"));
				}
			}
			var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
		}
	}
	// MSN/WebTV 2.6 supports Flash 4
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
	// WebTV 2.5 supports Flash 3
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
	// older WebTV supports Flash 2
	else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
	else if ( isIE && isWin && !isOpera ) {
		flashVer = ControlVersion();
	}	
	return flashVer;
}
// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
{
	versionStr = GetSwfVer();
	if (versionStr == -1 ) {
		return false;
	} else if (versionStr != 0) {
		if(isIE && isWin && !isOpera) {
			// Given "WIN 2,0,0,11"
			tempArray         = versionStr.split(" "); 	// ["WIN", "2,0,0,11"]
			tempString        = tempArray[1];			// "2,0,0,11"
			versionArray      = tempString.split(",");	// ['2', '0', '0', '11']
		} else {
			versionArray      = versionStr.split(".");
		}
		var versionMajor      = versionArray[0];
		var versionMinor      = versionArray[1];
		var versionRevision   = versionArray[2];
        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
		if (versionMajor > parseFloat(reqMajorVer)) {
			return true;
		} else if (versionMajor == parseFloat(reqMajorVer)) {
			if (versionMinor > parseFloat(reqMinorVer))
				return true;
			else if (versionMinor == parseFloat(reqMinorVer)) {
				if (versionRevision >= parseFloat(reqRevision))
					return true;
			}
		}
		return false;
	}
}
function AC_AddExtension(src, ext)
{
  if (src.indexOf('?') != -1)
    return src.replace(/\?/, ext+'?'); 
  else
    return src + ext;
}
function AC_Generateobj(objAttrs, params, embedAttrs) 
{ 
  var str = '';
  if (isIE && isWin && !isOpera)
  {
    str += '<object style="position:absolute; z-index:100; left:0;" ';
    for (var i in objAttrs)
    {
      str += i + '="' + objAttrs[i] + '" ';
    }
    str += '>';
    for (var i in params)
    {
      str += '<param name="' + i + '" value="' + params[i] + '" /> ';
    }
    str += '</object>';
  }
  else
  {
    str += '<embed ';
    for (var i in embedAttrs)
    {
      str += i + '="' + embedAttrs[i] + '" ';
    }
    str += '> </embed>';
  }
  document.write(str);
}
function AC_FL_RunContent(){
  var ret = 
    AC_GetArgs
    (  arguments, ".swf", "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
     , "application/x-shockwave-flash"
    );
  AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}
function AC_SW_RunContent(){
  var ret = 
    AC_GetArgs
    (  arguments, ".dcr", "src", "clsid:166B1BCA-3F9C-11CF-8075-444553540000"
     , null
    );
  AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}
function AC_GetArgs(args, ext, srcParamName, classid, mimeType){
  var ret = new Object();
  ret.embedAttrs = new Object();
  ret.params = new Object();
  ret.objAttrs = new Object();
  for (var i=0; i < args.length; i=i+2){
    var currArg = args[i].toLowerCase();    
    switch (currArg){	
      case "classid":
        break;
      case "pluginspage":
        ret.embedAttrs[args[i]] = args[i+1];
        break;
      case "src":
      case "movie":	
        args[i+1] = AC_AddExtension(args[i+1], ext);
        ret.embedAttrs["src"] = args[i+1];
        ret.params[srcParamName] = args[i+1];
        break;
      case "onafterupdate":
      case "onbeforeupdate":
      case "onblur":
      case "oncellchange":
      case "onclick":
      case "ondblclick":
      case "ondrag":
      case "ondragend":
      case "ondragenter":
      case "ondragleave":
      case "ondragover":
      case "ondrop":
      case "onfinish":
      case "onfocus":
      case "onhelp":
      case "onmousedown":
      case "onmouseup":
      case "onmouseover":
      case "onmousemove":
      case "onmouseout":
      case "onkeypress":
      case "onkeydown":
      case "onkeyup":
      case "onload":
      case "onlosecapture":
      case "onpropertychange":
      case "onreadystatechange":
      case "onrowsdelete":
      case "onrowenter":
      case "onrowexit":
      case "onrowsinserted":
      case "onstart":
      case "onscroll":
      case "onbeforeeditfocus":
      case "onactivate":
      case "onbeforedeactivate":
      case "ondeactivate":
      case "type":
      case "codebase":
      case "id":
        ret.objAttrs[args[i]] = args[i+1];
        break;
      case "width":
      case "height":
      case "align":
      case "vspace": 
      case "hspace":
      case "class":
      case "title":
      case "accesskey":
      case "name":
      case "tabindex":
        ret.embedAttrs[args[i]] = ret.objAttrs[args[i]] = args[i+1];
        break;
      default:
        ret.embedAttrs[args[i]] = ret.params[args[i]] = args[i+1];
    }
  }
  ret.objAttrs["classid"] = classid;
  if (mimeType) ret.embedAttrs["type"] = mimeType;
  return ret;
}