/*
Input Mask plugin extentions
http://github.com/RobinHerbots/jquery.inputmask
Copyright (c) 2010 - 2012 Robin Herbots
Licensed under the MIT license (http://www.opensource.org/licenses/mit-license.php)
Version: 1.0.2

Optional extentions on the jquery.inputmask base
*/
(function($) {
    //number aliases 
    $.extend($.inputmask.defaults, {
        definitions: {
            '9': {
                validator: function(chrs, buffer, pos, strict, opts) {
                    var isValid = opts.definitions['9'].regex.test(chrs);
                    if (isValid) {
                        //do some grouping
                    }
                    return isValid;
                },
                cardinality: 1,
                regex: new RegExp("[0-9]")
            }
        }
    });
    $.extend($.inputmask.defaults.aliases, {
        'decimal': {
            mask: "~",
            placeholder: "",
            repeat: 10,
            greedy: false,
            numericInput: true,
            regex: {
                number: function(radixPoint, digits) { return new RegExp("^[\+\\d\-]{1}\\d*[" + radixPoint + "]?\\d" + digits + "$"); }
            },
            onKeyDown: function(e, opts) {
                var $input = $(this), input = this;
                if (e.keyCode == opts.keyCode.TAB) {
                    var nptStr = input._valueGet();
                    var radixPosition = nptStr.indexOf(opts.radixPoint[opts.radixPoint.length - 1]);
                    if (radixPosition != -1) {
                        for (var i = 1; i < opts.digits; i++) {
                            if (nptStr[radixPosition + i]) nptStr = nptStr + "0";
                        }
                        $input.val(nptStr);
                    }
                }
            },
            definitions: {
                '~': { //real number
                    validator: function(chrs, buffer, pos, strict, opts) {
                        function digitExpression() {
                            return isNaN(opts.digits) ? opts.digits : '{0,' + opts.digits + '}';
                        }
                        var cbuf = buffer.slice();
                        cbuf.splice(pos, 0, chrs);
                        var bufferStr = cbuf.join('');
                        var isValid = opts.regex.number(opts.radixPoint, digitExpression()).test(bufferStr);
                        if (!isValid) {
                            if (strict) { //shiftL & shiftR use strict only validate from 0 to position
                                var cbuf = buffer.slice(0, pos);
                                cbuf.splice(pos, 0, chrs);
                                var bufferStr = cbuf.join('');
                                var isValid = opts.regex.number(opts.radixPoint, digitExpression()).test(bufferStr);
                            }
                            else {
                                if (bufferStr == opts.radixPoint) {
                                    isValid = opts.regex.number(opts.radixPoint, digitExpression()).test("0" + bufferStr);
                                    if (isValid) {
                                        buffer[pos] = "0";
                                        pos++;
                                        return pos;
                                    }
                                }
                            }
                        }
                        //todo grouping, radixpoint positioning
                        return isValid;
                    },
                    cardinality: 1,
                    prevalidator: null
                }
            },
            insertMode: true
        },
        'non-negative-decimal': {
            regex: {
                number: function(radixPoint, digits) { return new RegExp("^\\d+[" + radixPoint + "]?\\d" + digits + "$"); }
            },
            alias: "decimal"
        },
        'integer': {
            regex: {
                number: function() { return new RegExp("^([\+\-]?\\d*)$"); }
            },
            alias: "decimal"
        }
    });
})(jQuery);