/**
 * jquery.meio.mask.js
 * @author: fabiomcosta
 * @version: 1.1.3
 *
 * Created by Fabio M. Costa on 2008-09-16. Please report any bug at http://www.meiocodigo.com
 *
 * Copyright (c) 2008 Fabio M. Costa http://www.meiocodigo.com
 *
 * The MIT License (http://www.opensource.org/licenses/mit-license.php)
 *
 * 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.
 */

(function($){
		
	var isIphone = (window.orientation != undefined),
		// browsers like firefox2 and before and opera doenst have the onPaste event, but the paste feature can be done with the onInput event.
		pasteEvent = (($.browser.opera || ($.browser.mozilla && parseFloat($.browser.version.substr(0,3)) < 1.9 ))? 'input': 'paste');
		
	$.event.special.paste = {
		setup: function() {
	    	if(this.addEventListener)
	        	this.addEventListener(pasteEvent, pasteHandler, false);
   			else if (this.attachEvent)
				this.attachEvent(pasteEvent, pasteHandler);
		},

		teardown: function() {
			if(this.removeEventListener)
	        	this.removeEventListener(pasteEvent, pasteHandler, false);
   			else if (this.detachEvent)
				this.detachEvent(pasteEvent, pasteHandler);
		}
	};
	
	// the timeout is set because we can't get the value from the input without it
	function pasteHandler(e){
		var self = this;
		e = $.event.fix(e || window.e);
		e.type = 'paste';
		// Execute the right handlers by setting the event type to paste
		setTimeout(function(){ $.event.handle.call(self, e); }, 1);
	};

	$.extend({
		mask : {
			
			// the mask rules. You may add yours!
			// number rules will be overwritten
			rules : {
				'z': /[a-z]/,
				'Z': /[A-Z]/,
				'a': /[a-zA-Z]/,
				'*': /[0-9a-zA-Z]/,
				'@': /[0-9a-zA-ZçÇáàãâéèêíìóòôõúùü]/
			},
			
			// these keys will be ignored by the mask.
			// all these numbers where obtained on the keydown event
			keyRepresentation : {
				8	: 'backspace',
				9	: 'tab',
				13	: 'enter',
				16	: 'shift',
				17	: 'control',
				18	: 'alt',
				27	: 'esc',
				33	: 'page up',
				34	: 'page down',
				35	: 'end',
				36	: 'home',
				37	: 'left',
				38	: 'up',
				39	: 'right',
				40	: 'down',
				45	: 'insert',
				46	: 'delete',
				116	: 'f5',
				123 : 'f12',
				224	: 'command'
			},
			
			iphoneKeyRepresentation : {
				10	: 'go',
				127	: 'delete'
			},
			
			signals : {
				'+' : '',
				'-' : '-'
			},
			
			// default settings for the plugin
			options : {
				attr: 'alt', // an attr to look for the mask name or the mask itself
				mask: null, // the mask to be used on the input
				type: 'fixed', // the mask of this mask
				maxLength: -1, // the maxLength of the mask
				defaultValue: '', // the default value for this input
				signal: false, // this should not be set, to use signal at masks put the signal you want ('-' or '+') at the default value of this mask.
							   // See the defined masks for a better understanding.
				
				textAlign: true, // use false to not use text-align on any mask (at least not by the plugin, you may apply it using css)
				selectCharsOnFocus: true, // select all chars from input on its focus
				autoTab: false, // auto focus the next form element when you type the mask completely
				setSize: false, // sets the input size based on the length of the mask (work with fixed and reverse masks only)
				fixedChars : '[(),.:/ -]', // fixed chars to be used on the masks. You may change it for your needs!
				
				onInvalid : function(){},
				onValid : function(){},
				onOverflow : function(){}
			},
			
			// masks. You may add yours!
			// Ex: $.fn.setMask.masks.msk = {mask: '999'}
			// and then if the 'attr' options value is 'alt', your input should look like:
			// <input type="text" name="some_name" id="some_name" alt="msk" />
			masks : {
				'year'				: { mask : '2999'},
				'phone'				: { mask : '(99) 9999-9999' },
				'phone-us'			: { mask : '(999) 999-9999' },
				'cpf'				: { mask : '999.999.999-99' }, // cadastro nacional de pessoa fisica
				'cnpj'				: { mask : '99.999.999/9999-99' },
				'date'				: { mask : '39/19/9999' }, //uk date
				'date-us'			: { mask : '19/39/9999' },
				'month-year'		: { mask : '19/9999' },
				'cep'				: { mask : '99999-999' },
				'time'				: { mask : '29:59' },
				'cc'				: { mask : '9999 9999 9999 9999' }, //credit card mask
				'integer'			: { mask : '999.999.999.999', type : 'reverse' },
				'decimal'			: { mask : '99,999.999.999.999', type : 'reverse' },
				'decimal-us'		: { mask : '99.999,999,999,999', type : 'reverse' },
				'signed-decimal'	: { mask : '99,999.999.999.999', type : 'reverse' },
				'signed-decimal-us' : { mask : '99,999.999.999.999', type : 'reverse' }
			},
			
			init : function(){
				// if has not inited...
				if( !this.hasInit ){

					var self = this, i,
						keyRep = (isIphone)? this.iphoneKeyRepresentation: this.keyRepresentation;
						
					this.ignore = false;
			
					// constructs number rules
					for(i=0; i<=9; i++) this.rules[i] = new RegExp('[0-'+i+']');
				
					this.keyRep = keyRep;
					// ignore keys array creation for iphone or the normal ones
					this.ignoreKeys = [];
					$.each(keyRep,function(key){
						self.ignoreKeys.push( parseInt(key) );
					});
					
					this.hasInit = true;
				}
			},
			
			set: function(el,options){
				
				var maskObj = this,
					$el = $(el),
					mlStr = 'maxLength';
				
				options = options || {};
				this.init();
				
				return $el.each(function(){
					
					if(options.attr) maskObj.options.attr = options.attr;
					
					var $this = $(this),
						o = $.extend({}, maskObj.options),
						attrValue = $this.attr(o.attr),
						tmpMask = '';
						
					// then we look for the 'attr' option
					tmpMask = (typeof options == 'string')? options: (attrValue != '')? attrValue: null;
					if(tmpMask) o.mask = tmpMask;
					
					// then we see if it's a defined mask
					if(maskObj.masks[tmpMask]) o = $.extend(o, maskObj.masks[tmpMask]);
					
					// then it looks if the options is an object, if it is we will overwrite the actual options
					if(typeof options == 'object' && options.constructor != Array) o = $.extend(o, options);
					
					//then we look for some metadata on the input
					if($.metadata) o = $.extend(o, $this.metadata());
					
					if(o.mask != null){
						
						if($this.data('mask')) maskObj.unset($this);
						
						var defaultValue = o.defaultValue,
							reverse = (o.type=='reverse'),
							fixedCharsRegG = new RegExp(o.fixedChars, 'g');
						
						if(o.maxLength == -1) o.maxLength = $this.attr(mlStr);
						
						o = $.extend({}, o,{
							fixedCharsReg: new RegExp(o.fixedChars),
							fixedCharsRegG: fixedCharsRegG,
							maskArray: o.mask.split(''),
							maskNonFixedCharsArray: o.mask.replace(fixedCharsRegG, '').split('')
						});
						
						//setSize option (this is not removed from the input (while removing the mask) since this would be kind of funky)
						if((o.type=='fixed' || reverse) && o.setSize && !$this.attr('size')) $this.attr('size', o.mask.length);
						
						//sets text-align right for reverse masks
						if(reverse && o.textAlign) $this.css('text-align', 'right');
						
						if(this.value!='' || defaultValue!=''){
							// apply mask to the current value of the input or to the default value
							var val = maskObj.string((this.value!='')? this.value: defaultValue, o);
							//setting defaultValue fixes the reset button from the form
							this.defaultValue = val;
							$this.val(val);
						}
						
						// compatibility patch for infinite mask, that is now repeat
						if(o.type=='infinite') o.type = 'repeat';
						
						$this.data('mask', o);
						
						// removes the maxLength attribute (it will be set again if you use the unset method)
						$this.removeAttr(mlStr);
						
						// setting the input events
						$this.bind('keydown.mask', {func:maskObj._onKeyDown, thisObj:maskObj}, maskObj._onMask)
							.bind('keypress.mask', {func:maskObj._onKeyPress, thisObj:maskObj}, maskObj._onMask)
							.bind('keyup.mask', {func:maskObj._onKeyUp, thisObj:maskObj}, maskObj._onMask)
							.bind('paste.mask', {func:maskObj._onPaste, thisObj:maskObj}, maskObj._onMask)
							.bind('focus.mask', maskObj._onFocus)
							.bind('blur.mask', maskObj._onBlur)
							.bind('change.mask', maskObj._onChange);
					}
				});
			},
			
			//unsets the mask from el
			unset : function(el){
				var $el = $(el);
				
				return $el.each(function(){
					var $this = $(this);
					if($this.data('mask')){
						var maxLength = $this.data('mask').maxLength;
						if(maxLength != -1) $this.attr('maxLength', maxLength);
						$this.unbind('.mask')
							.removeData('mask');
					}
				});
			},
			
			//masks a string
			string : function(str, options){
				this.init();
				var o={};
				if(typeof str != 'string') str = String(str);
				switch(typeof options){
					case 'string':
						// then we see if it's a defined mask	
						if(this.masks[options]) o = $.extend(o, this.masks[options]);
						else o.mask = options;
						break;
					case 'object':
						o = options;
				}
				if(!o.fixedChars) o.fixedChars = this.options.fixedChars;

				var fixedCharsReg = new RegExp(o.fixedChars),
					fixedCharsRegG = new RegExp(o.fixedChars, 'g');
					
				// insert signal if any
				if( (o.type=='reverse') && o.defaultValue ){
					if( typeof this.signals[o.defaultValue.charAt(0)] != 'undefined' ){
						var maybeASignal = str.charAt(0);
						o.signal = (typeof this.signals[maybeASignal] != 'undefined') ? this.signals[maybeASignal] : this.signals[o.defaultValue.charAt(0)];
						o.defaultValue = o.defaultValue.substring(1);
					}
				}
				
				return this.__maskArray(str.split(''),
							o.mask.replace(fixedCharsRegG, '').split(''),
							o.mask.split(''),
							o.type,
							o.maxLength,
							o.defaultValue,
							fixedCharsReg,
							o.signal);
			},
			
			// all the 3 events below are here just to fix the change event on reversed masks.
			// It isn't fired in cases that the keypress event returns false (needed).
			_onFocus: function(e){
				var $this = $(this), dataObj = $this.data('mask');
				dataObj.inputFocusValue = $this.val();
				dataObj.changed = false;
				if(dataObj.selectCharsOnFocus) $this.select();
			},
			
			_onBlur: function(e){
				var $this = $(this), dataObj = $this.data('mask');
				if(dataObj.inputFocusValue != $this.val() && !dataObj.changed)
					$this.trigger('change');
			},
			
			_onChange: function(e){
				$(this).data('mask').changed = true;
			},
			
			_onMask : function(e){
				var thisObj = e.data.thisObj,
					o = {};
				o._this = e.target;
				o.$this = $(o._this);
				// if the input is readonly it does nothing
				if(o.$this.attr('readonly')) return true;
				o.data = o.$this.data('mask');
				o[o.data.type] = true;
				o.value = o.$this.val();
				o.nKey = thisObj.__getKeyNumber(e);
				o.range = thisObj.__getRange(o._this);
				o.valueArray = o.value.split('');
				return e.data.func.call(thisObj, e, o);
			},
			
			_onKeyDown : function(e,o){
				// lets say keypress at desktop == keydown at iphone (theres no keypress at iphone)
				this.ignore = $.inArray(o.nKey, this.ignoreKeys) > -1 || e.ctrlKey || e.metaKey || e.altKey;
				if(this.ignore){
					var rep = this.keyRep[o.nKey];
					o.data.onValid.call(o._this, rep? rep: '', o.nKey);
				}
				return isIphone ? this._keyPress(e, o) : true;
			},
			
			_onKeyUp : function(e, o){
				//9=TAB_KEY 16=SHIFT_KEY
				//this is a little bug, when you go to an input with tab key
				//it would remove the range selected by default, and that's not a desired behavior
				if(o.nKey==9 || o.nKey==16) return true;
				
				if(o.data.type=='repeat'){
					this.__autoTab(o);
					return true;
				}

				return this._onPaste(e, o);
			},
			
			_onPaste : function(e,o){
				// changes the signal at the data obj from the input
				if(o.reverse) this.__changeSignal(e.type, o);
				
				var $thisVal = this.__maskArray(
					o.valueArray,
					o.data.maskNonFixedCharsArray,
					o.data.maskArray,
					o.data.type,
					o.data.maxLength,
					o.data.defaultValue,
					o.data.fixedCharsReg,
					o.data.signal
				);
				
				o.$this.val( $thisVal );
				// this makes the caret stay at first position when 
				// the user removes all values in an input and the plugin adds the default value to it (if it haves one).
				if( !o.reverse && o.data.defaultValue.length && (o.range.start==o.range.end) )
					this.__setRange(o._this, o.range.start, o.range.end);
					
				//fix so ie's and safari's caret won't go to the end of the input value.
				if( ($.browser.msie || $.browser.safari) && !o.reverse)
					this.__setRange(o._this,o.range.start,o.range.end);
				
				if(this.ignore) return true;
				
				this.__autoTab(o);
				return true;
			},
			
			_onKeyPress: function(e, o){
				
				if(this.ignore) return true;
				
				// changes the signal at the data obj from the input
				if(o.reverse) this.__changeSignal(e.type, o);
				
				var c = String.fromCharCode(o.nKey),
					rangeStart = o.range.start,
					rawValue = o.value,
					maskArray = o.data.maskArray;
				
				if(o.reverse){
					 	// the input value from the range start to the value start
					var valueStart = rawValue.substr(0, rangeStart),
						// the input value from the range end to the value end
						valueEnd = rawValue.substr(o.range.end, rawValue.length);
					
					rawValue = valueStart+c+valueEnd;
					//necessary, if not decremented you will be able to input just the mask.length-1 if signal!=''
					//ex: mask:99,999.999.999 you will be able to input 99,999.999.99
					if(o.data.signal && (rangeStart-o.data.signal.length > 0)) rangeStart-=o.data.signal.length;
				}

				var valueArray = rawValue.replace(o.data.fixedCharsRegG, '').split(''),
					// searches for fixed chars begining from the range start position, till it finds a non fixed
					extraPos = this.__extraPositionsTill(rangeStart, maskArray, o.data.fixedCharsReg);
				
				o.rsEp = rangeStart+extraPos;
				
				if(o.repeat) o.rsEp = 0;
				
				// if the rule for this character doesnt exist (value.length is bigger than mask.length)
				// added a verification for maxLength in the case of the repeat type mask
				if( !this.rules[maskArray[o.rsEp]] || (o.data.maxLength != -1 && valueArray.length >= o.data.maxLength && o.repeat)){
					// auto focus on the next input of the current form
					o.data.onOverflow.call(o._this, c, o.nKey);
					return false;
				}
				
				// if the new character is not obeying the law... :P
				else if( !this.rules[maskArray[o.rsEp]].test( c ) ){
					o.data.onInvalid.call(o._this, c, o.nKey);
					return false;
				}
				
				else o.data.onValid.call(o._this, c, o.nKey);
				
				var $thisVal = this.__maskArray(
					valueArray,
					o.data.maskNonFixedCharsArray,
					maskArray,
					o.data.type,
					o.data.maxLength,
					o.data.defaultValue,
					o.data.fixedCharsReg,
					o.data.signal,
					extraPos
				);
				
				o.$this.val( $thisVal );
				
				return (o.reverse)? this._keyPressReverse(e, o): (o.fixed)? this._keyPressFixed(e, o): true;
			},
			
			_keyPressFixed: function(e, o){

				if(o.range.start==o.range.end){
					// the 0 thing is cause theres a particular behavior i wasnt liking when you put a default
					// value on a fixed mask and you select the value from the input the range would go to the
					// end of the string when you enter a char. with this it will overwrite the first char wich is a better behavior.
					// opera fix, cant have range value bigger than value length, i think it loops thought the input value...
					if((o.rsEp==0 && o.value.length==0) || o.rsEp < o.value.length)
						this.__setRange(o._this, o.rsEp, o.rsEp+1);	
				}
				else
					this.__setRange(o._this, o.range.start, o.range.end);
					
				return true;
			},
			
			_keyPressReverse: function(e, o){
				//fix for ie
				//this bug was pointed by Pedro Martins
				//it fixes a strange behavior that ie was having after a char was inputted in a text input that
				//had its content selected by any range 
				if($.browser.msie && ((o.range.start==0 && o.range.end==0) || o.range.start != o.range.end ))
					this.__setRange(o._this, o.value.length);
				return false;
			},
			
			__autoTab: function(o){
				if(o.data.autoTab
					&& (
						(
							o.$this.val().length >= o.data.maskArray.length 
							&& !o.repeat 
						) || (
							o.data.maxLength != -1
							&& o.valueArray.length >= o.data.maxLength
							&& o.repeat
						)
					)
				){
					var nextEl = this.__getNextInput(o._this, o.data.autoTab);
					if(nextEl){
						o.$this.trigger('blur');
						nextEl.focus().select();
					}
				}
			},
			
			// changes the signal at the data obj from the input			
			__changeSignal : function(eventType,o){
				if(o.data.signal!==false){
					var inputChar = (eventType=='paste')? o.value.charAt(0): String.fromCharCode(o.nKey);
					if( this.signals && (typeof this.signals[inputChar] != 'undefined') ){
						o.data.signal = this.signals[inputChar];
					}
				}
			},
			
			__getKeyNumber : function(e){
				return (e.charCode||e.keyCode||e.which);
			},
			
			// this function is totaly specific to be used with this plugin, youll never need it
			// it gets the array representing an unmasked string and masks it depending on the type of the mask
			__maskArray : function(valueArray, maskNonFixedCharsArray, maskArray, type, maxlength, defaultValue, fixedCharsReg, signal, extraPos){
				if(type == 'reverse') valueArray.reverse();
				valueArray = this.__removeInvalidChars(valueArray, maskNonFixedCharsArray, type=='repeat'||type=='infinite');
				if(defaultValue) valueArray = this.__applyDefaultValue.call(valueArray, defaultValue);
				valueArray = this.__applyMask(valueArray, maskArray, extraPos, fixedCharsReg);
				switch(type){
					case 'reverse':
						valueArray.reverse();
						return (signal || '')+valueArray.join('').substring(valueArray.length-maskArray.length);
					case 'infinite': case 'repeat':
						var joinedValue = valueArray.join('');
						return (maxlength != -1 && valueArray.length >= maxlength)? joinedValue.substring(0, maxlength): joinedValue;
					default:
						return valueArray.join('').substring(0, maskArray.length);
				}
				return '';
			},
			
			// applyes the default value to the result string
			__applyDefaultValue : function(defaultValue){
				var defLen = defaultValue.length,thisLen = this.length,i;
				//removes the leading chars
				for(i=thisLen-1;i>=0;i--){
					if(this[i]==defaultValue.charAt(0)) this.pop();
					else break;
				}
				// apply the default value
				for(i=0;i<defLen;i++) if(!this[i])
					this[i] = defaultValue.charAt(i);
					
				return this;
			},
			
			// Removes values that doesnt match the mask from the valueArray
			// Returns the array without the invalid chars.
			__removeInvalidChars : function(valueArray, maskNonFixedCharsArray, repeatType){
				// removes invalid chars
				for(var i=0, y=0; i<valueArray.length; i++ ){
					if( maskNonFixedCharsArray[y] &&
						this.rules[maskNonFixedCharsArray[y]] &&
						!this.rules[maskNonFixedCharsArray[y]].test(valueArray[i]) ){
							valueArray.splice(i,1);
							if(!repeatType) y--;
							i--;
					}
					if(!repeatType) y++;
				}
				return valueArray;
			},
			
			// Apply the current input mask to the valueArray and returns it. 
			__applyMask : function(valueArray, maskArray, plus, fixedCharsReg){
				if( typeof plus == 'undefined' ) plus = 0;
				// apply the current mask to the array of chars
				for(var i=0; i<valueArray.length+plus; i++ ){
					if( maskArray[i] && fixedCharsReg.test(maskArray[i]) )
						valueArray.splice(i, 0, maskArray[i]);
				}
				return valueArray;
			},
			
			// searches for fixed chars begining from the range start position, till it finds a non fixed
			__extraPositionsTill : function(rangeStart, maskArray, fixedCharsReg){
				var extraPos = 0;
				while(fixedCharsReg.test(maskArray[rangeStart++])){
					extraPos++;
				}
				return extraPos;
			},
			
			__getNextInput: function(input, selector){
				var formEls = input.form.elements,
					initialInputIndex = $.inArray(input, formEls) + 1,
					$input = null,
					i;
				// look for next input on the form of the pased input
				for(i = initialInputIndex; i < formEls.length; i++){
					$input = $(formEls[i]);
					if(this.__isNextInput($input, selector))
						return $input;
				}
					
				var forms = document.forms,
					initialFormIndex = $.inArray(input.form, forms) + 1,
					y, tmpFormEls = null;
				// look for the next forms for the next input
				for(y = initialFormIndex; y < forms.length; y++){
					tmpFormEls = forms[y].elements;
					for(i = 0; i < tmpFormEls.length; i++){
						$input = $(tmpFormEls[i]);
						if(this.__isNextInput($input, selector))
							return $input;
					}
				}
				return null;
			},
			
			__isNextInput: function($formEl, selector){
				var formEl = $formEl.get(0);
				return formEl
					&& (formEl.offsetWidth > 0 || formEl.offsetHeight > 0)
					&& formEl.nodeName != 'FIELDSET'
					&& (selector === true || (typeof selector == 'string' && $formEl.is(selector)));
			},
			
			// http://www.bazon.net/mishoo/articles.epl?art_id=1292
			__setRange : function(input, start, end) {
				if(typeof end == 'undefined') end = start;
				if (input.setSelectionRange){
					input.setSelectionRange(start, end);
				}
				else{
					// assumed IE
					var range = input.createTextRange();
					range.collapse();
					range.moveStart('character', start);
					range.moveEnd('character', end - start);
					range.select();
				}
			},
			
			// adaptation from http://digitarald.de/project/autocompleter/
			__getRange : function(input){
				if (!$.browser.msie) return {start: input.selectionStart, end: input.selectionEnd};
				var pos = {start: 0, end: 0},
					range = document.selection.createRange();
				pos.start = 0 - range.duplicate().moveStart('character', -100000);
				pos.end = pos.start + range.text.length;
				return pos;
			},
			
			//deprecated
			unmaskedVal : function(el){
				return $(el).val().replace($.mask.fixedCharsRegG, '');
			}
			
		}
	});
	
	$.fn.extend({
		setMask : function(options){
			//Se for IE, desabilita o botão direito do mouse no 
			//campo com a máscara, para evitar o 'colar'
			if(navigator.appName == "Microsoft Internet Explorer") {
				$(this).mouseenter(function() {document.oncontextmenu=new Function("return false");});
				$(this).mouseout(function() {document.oncontextmenu=new Function("return true");});
			}
			//--
			return $.mask.set(this, options);
		},
		unsetMask : function(){
			return $.mask.unset(this);
		},
		//deprecated
		unmaskedVal : function(){
			return $.mask.unmaskedVal(this[0]);
		}
	});
})(jQuery);