/*
* @Copyright (c) 2008 Aurélio Saraiva (aureliosaraiva@gmail.com)
* @Page http://inovaideia.com.br/maskInputMoney

* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/

/*
* @Version: 0.1
* @Release: 2008-02-20
*/
(function($) {
	$.fn.maskMoney = function(settings) {
		settings = $.extend({
			symbol: "R$",
			decimal: ",",
			thousands: ".",
			showSymbol:true
		}, settings);
		
		settings.symbol=settings.symbol+" ";

		return this.each(function(){
			var input=$(this);
			function money(e){
				e=e||window.event;
				var k=e.charCode||e.keyCode||e.which;		
				
				if (k == 9) return(true);
						
				if (k == 8) {
					preventDefault(e);
					var x = input.val().substring(0,input.val().length-1);
					input.val(maskValue(x));
					return false;
				}
				if((k < 48 || k > 57)){
					preventDefault(e);
					return true;
				}
				var key = String.fromCharCode(k);  // Valor para o código da Chave
				preventDefault(e);
				input.val(maskValue(input.val()+key));
			}
			
			function preventDefault(e){
				if (e.preventDefault){ //standart browsers
					e.preventDefault()
				}else{ // internet explorer
					e.returnValue = false
				}
			}
			
			function maskValue(v){
				v = v.replace(settings.symbol,"");
				var a = '';
				var strCheck = '0123456789';
				var len = v.length;
				var t = "";
				if (len== 0){
					t = "0.00";
				}
				for(var i = 0; i < len; i++)
				if ((v.charAt(i) != '0') && (v.charAt(i) != settings.decimal)) break;

				for(; i < len; i++){
					if (strCheck.indexOf(v.charAt(i))!=-1) a+= v.charAt(i);
				}
				if(a.length==0){t = "0.00";}
				else if (a.length==1){t = "0.0" + a;}
				else if (a.length==2){t = "0." +a;}
				else{
					var part1 = a.substring(0,a.length-2);
					var part2 = a.substring(a.length-2);
					t = part1 + "." + part2;
				}
				var p, d = (t=t.split("."))[1].substr(0, 2);
				for(p = (t=t[0]).length; (p-=3) >= 1;) {
					t = t.substr(0,p) + settings.thousands + t.substr(p);
				}
				return setSymbol(t+settings.decimal+d+Array(3-d.length).join(0));
			}

			function focusEvent(){
				if(input.val()==""){
					input.val(setSymbol("0"+settings.decimal+"00"));
					//input.val(setSymbol("0"+settings.decimal+"00"));
				}
				else{
					input.val(setSymbol(input.val()));
				}
			}

			function blurEvent(){
				if(input.val()==setSymbol("0"+settings.decimal+"00")){
					input.val("");
				}
				else{
					input.val(input.val().replace(settings.symbol,""))
				}
			}
			
			function setSymbol(v){
				if(settings.showSymbol){
					return settings.symbol+v;
				}
				return v;
			}

			input.bind("keypress",money);
			input.bind("blur",blurEvent);
			input.bind("focus",focusEvent);
			
			input.one("unmaskMoney",function(){
				input.unbind("focus",focusEvent);
				input.unbind("blur",blurEvent);
				input.unbind("keypress",money);
				if ($.browser.msie)
				this.onpaste= null;
				else if ($.browser.mozilla)
				this.removeEventListener('input',blurEvent,false);
			});
		});
	}
	
	$.fn.unmaskMoney=function(){
		return this.trigger("unmaskMoney");
	};
	
	$.fn.maskNumber = function(options){
		return this.each(function(){
			var input = $(this);
			input.keypress(function(e){
				if( e.which!=8 && e.which!=0 && (e.which<48 || e.which>57)){
					return false;
				}else{
				    input.bind("keyup", function(){
				        if($(this).val() == ""){
				            $(this).val("0");
				        }
				    })
				    
				    if(input.val() == "0"){
                        input.val("");
                    }
                }
			});
		});
	}	
	$.fn.maskDecimal = function(options){
		return this.each(function(){
			var input = $(this);
			input.keypress(function(e){
				if( e.which!=8 && e.which!=0 && (e.which<48 || e.which>57) && e.which != 44){
					return false;
				}else{
				    input.bind("keyup", function(){
				        if($(this).val() == ""){
				            $(this).val("0");
				        }
				    })
				    			
                    if(e.which == 44 && input.val() == "0"){
				       input.val("0,");
				       return false;
                    }else if(e.which == 44){
                        if(input.val().search(",") > -1){
                            return false;
                        }
                    }else if(input.val() == "0"){
                       input.val("");
				    }
				}
			});
		});
	}		
})(jQuery);