/******************************************************************************
* utils.js
*
* Funcions varies genèriques utilitzables a qualsevol lloc i independents de
*	la base de dades o d'una aplicació en concret.
*
*	Albert Sunyer @ 2008
******************************************************************************/

function isMail(txt){ 
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	
	return filter.test(txt);
}

function isURL(txt){ 
	var filter  = /^http|https/;
	
	return filter.test(txt);
}

function isDate(txt){
	var filter = /^((((0?[1-9]|[12]\d|3[01])[\.\-\/](0?[13578]|1[02])[\.\-\/]((1[6-9]|[2-9]\d)?\d{2}))|((0?[1-9]|[12]\d|30)[\.\-\/](0?[13456789]|1[012])[\.\-\/]((1[6-9]|[2-9]\d)?\d{2}))|((0?[1-9]|1\d|2[0-8])[\.\-\/]0?2[\.\-\/]((1[6-9]|[2-9]\d)?\d{2}))|(29[\.\-\/]0?2[\.\-\/]((1[6-9]|[2-9]\d)?(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)|00)))|(((0[1-9]|[12]\d|3[01])(0[13578]|1[02])((1[6-9]|[2-9]\d)?\d{2}))|((0[1-9]|[12]\d|30)(0[13456789]|1[012])((1[6-9]|[2-9]\d)?\d{2}))|((0[1-9]|1\d|2[0-8])02((1[6-9]|[2-9]\d)?\d{2}))|(2902((1[6-9]|[2-9]\d)?(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)|00))))$/;

	return filter.test(txt);
}

function right(str, n){
	/***
	IN: str - the string we are RIGHTing
			n - the number of characters we want to return
	
	RETVAL: n characters from the right side of the string
	***/
	
	if(n<=0) return ""; // Invalid bound, return blank string
	else if(n>String(str).length) return str; // Invalid bound, return entire string
	else { // Valid bound, return appropriate substring
		 var iLen=String(str).length;
		 return String(str).substring(iLen, iLen-n);
	}
}

function mid(str, start, len){
	/***
	IN: str - the string we are LEFTing
			start - our string's starting position (0 based!!)
			len - how many characters from start we want to get
	
	RETVAL: The substring from start to start+len
	***/
	// Make sure start and len are within proper bounds
	if(start<0 || len<0) return "";

	var iEnd, iLen=String(str).length;
	
	if(start+len>iLen) iEnd=iLen;
	else iEnd=start+len;

	return String(str).substring(start,iEnd);
}

function focusit(c){
	document.getElementById(c).focus();
}


var myWin; 

function popup(url, id, w, h, scroll){
	if(!myWin || myWin.closed){
		myWin = window.open(''+url+'',''+id+'','width='+w+',height='+h+',toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars='+scroll+',resizable=yes,top='+((screen.height/2)-(200))+',left='+((screen.width/2) - (150)) + '');
	}else{
		myWin.focus();
	};
	
	void(0); 
}

function popupNoToolsFull(url, nom, scroll){
	settings='height='+screen.availHeight+',width='+screen.availWidth+',top=0,left=0,scrollbars='+scroll+',resizable,toolbar=no,status=no,resizable=yes';
	win=window.open(url, nom, settings);
}

// ------------------------------------------------------------------
// getDateFromFormat( date_string , format_string )
//
// This function takes a date string and a format string. It matches
// If the date string matches the format string, it returns the 
// getTime() of the date. If it does not match, it returns 0.
// ------------------------------------------------------------------
function getDateFromFormat(val,format) {
	val=val+"";
	format=format+"";
	var i_val=0;
	var i_format=0;
	var c="";
	var token="";
	var token2="";
	var x,y;
	var now=new Date();
	var year=now.getYear();
	var month=now.getMonth()+1;
	var date=1;
	var hh=now.getHours();
	var mm=now.getMinutes();
	var ss=now.getSeconds();
	var ampm="";
	
	while (i_format < format.length) {
		// Get next token from format string
		c=format.charAt(i_format);
		token="";
		while ((format.charAt(i_format)==c) && (i_format < format.length)) {
			token += format.charAt(i_format++);
			}
		// Extract contents of value based on format token
		if (token=="yyyy" || token=="yy" || token=="y") {
			if (token=="yyyy") { x=4;y=4; }
			if (token=="yy")   { x=2;y=2; }
			if (token=="y")    { x=2;y=4; }
			year=_getInt(val,i_val,x,y);
			if (year==null) { return 0; }
			i_val += year.length;
			if (year.length==2) {
				if (year > 70) { year=1900+(year-0); }
				else { year=2000+(year-0); }
				}
			}
		else if (token=="MMM"||token=="NNN"){
			month=0;
			for (var i=0; i<MONTH_NAMES.length; i++) {
				var month_name=MONTH_NAMES[i];
				if (val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()) {
					if (token=="MMM"||(token=="NNN"&&i>11)) {
						month=i+1;
						if (month>12) { month -= 12; }
						i_val += month_name.length;
						break;
						}
					}
				}
			if ((month < 1)||(month>12)){return 0;}
			}
		else if (token=="EE"||token=="E"){
			for (var i=0; i<DAY_NAMES.length; i++) {
				var day_name=DAY_NAMES[i];
				if (val.substring(i_val,i_val+day_name.length).toLowerCase()==day_name.toLowerCase()) {
					i_val += day_name.length;
					break;
					}
				}
			}
		else if (token=="MM"||token=="M") {
			month=_getInt(val,i_val,token.length,2);
			if(month==null||(month<1)||(month>12)){return 0;}
			i_val+=month.length;}
		else if (token=="dd"||token=="d") {
			date=_getInt(val,i_val,token.length,2);
			if(date==null||(date<1)||(date>31)){return 0;}
			i_val+=date.length;}
		else if (token=="hh"||token=="h") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<1)||(hh>12)){return 0;}
			i_val+=hh.length;}
		else if (token=="HH"||token=="H") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<0)||(hh>23)){return 0;}
			i_val+=hh.length;}
		else if (token=="KK"||token=="K") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<0)||(hh>11)){return 0;}
			i_val+=hh.length;}
		else if (token=="kk"||token=="k") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<1)||(hh>24)){return 0;}
			i_val+=hh.length;hh--;}
		else if (token=="mm"||token=="m") {
			mm=_getInt(val,i_val,token.length,2);
			if(mm==null||(mm<0)||(mm>59)){return 0;}
			i_val+=mm.length;}
		else if (token=="ss"||token=="s") {
			ss=_getInt(val,i_val,token.length,2);
			if(ss==null||(ss<0)||(ss>59)){return 0;}
			i_val+=ss.length;}
		else if (token=="a") {
			if (val.substring(i_val,i_val+2).toLowerCase()=="am") {ampm="AM";}
			else if (val.substring(i_val,i_val+2).toLowerCase()=="pm") {ampm="PM";}
			else {return 0;}
			i_val+=2;}
		else {
			if (val.substring(i_val,i_val+token.length)!=token) {return 0;}
			else {i_val+=token.length;}
			}
		}
	// If there are any trailing characters left in the value, it doesn't match
	if (i_val != val.length) { return 0; }
	// Is date valid for month?
	if (month==2) {
		// Check for leap year
		if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year
			if (date > 29){ return 0; }
			}
		else { if (date > 28) { return 0; } }
		}
	if ((month==4)||(month==6)||(month==9)||(month==11)) {
		if (date > 30) { return 0; }
		}
	// Correct hours value
	if (hh<12 && ampm=="PM") { hh=hh-0+12; }
	else if (hh>11 && ampm=="AM") { hh-=12; }
	var newdate=new Date(year,month-1,date,hh,mm,ss);
	return newdate;
	}

function _isInteger(val) {
	var digits="1234567890";
	for (var i=0; i < val.length; i++) {
		if (digits.indexOf(val.charAt(i))==-1) { return false; }
		}
	return true;
	}
function _getInt(str,i,minlength,maxlength) {
	for (var x=maxlength; x>=minlength; x--) {
		var token=str.substring(i,i+x);
		if (token.length < minlength) { return null; }
		if (_isInteger(token)) { return token; }
		}
	return null;
	}

/*
 * jQuery popup v1.1 - A jQuery popup plugin.
 * By Jordan Thomas - http://labs.wondergroup.com
 * Licensed under the do whatever you want to license.
 * If you like, keep this message intact so 
 * someone else can find the origin.
*/
jQuery.fn.popup = function(options) {
	var defaults = {
		width: screen.width/2,
		height: screen.height/2,
		titlebar: true,
		status: false,
		resizable: false,
		toolbar: false,
		scrollbars: true,
		menubar: false
	};
	var options = jQuery.extend(defaults, options);
	
	Boolean.prototype.setProperty = function() {
		if (this == true) { return "yes"; } else { return "no"; }
	};
	
	return this.each( function() {
		jQuery(this).click( function() {
			var target = this.target;
			var href = this.href;
			var posY = (parseInt(screen.height/2)) - (parseInt(options.height/2));
			var posX = (parseInt(screen.width/2)) - (parseInt(options.width/2));
			var win = window.open(href, target, 'titlebar=' + options.titlebar.setProperty() + ', screenX='+ posX +', screenY='+ posY +', left='+ posX +', top='+ posY +', status=' + options.status.setProperty() + ', resizable=' + options.resizable.setProperty() + ', toolbar=' + options.toolbar.setProperty() + ', scrollbars=' + options.scrollbars.setProperty() + ', menubar=' + options.menubar.setProperty() + ', width='+ options.width +', height='+ options.height);
			win.focus();
			return false;
		});
	});
};