/**
 * validate.js
 *
 * Copyright 2009, Moxiecode Systems AB
 * Released under LGPL License.
 *
 * License: http://tinymce.moxiecode.com/license
 * Contributing: http://tinymce.moxiecode.com/contributing
 */

/**
    // String validation:

    if (!Validator.isEmail('myemail'))
        alert('Invalid email.');

    // Form validation:

    var f = document.forms['myform'];

    if (!Validator.isEmail(f.myemail))
        alert('Invalid email.');
*/

var Validator = {
    isEmail : function(s) {
        return this.test(s, '^[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+@[-!#$%&\'*+\\/0-9=?A-Z^_`a-z{|}~]+\.[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+$');
    },

    isAbsUrl : function(s) {
        return this.test(s, '^(news|telnet|nttp|file|http|ftp|https)://[-A-Za-z0-9\\.]+\\/?.*$');
    },

    isSize : function(s) {
        return this.test(s, '^[0-9.]+(%|in|cm|mm|em|ex|pt|pc|px)?$');
    },

    isId : function(s) {
        return this.test(s, '^[A-Za-z_]([A-Za-z0-9_])*$');
    },

    isEmpty : function(s) {
        var nl, i;

        if (s.nodeName == 'SELECT' && s.selectedIndex < 1)
            return true;

        if (s.type == 'checkbox' && !s.checked)
            return true;

        if (s.type == 'radio') {
            for (i=0, nl = s.form.elements; i<nl.length; i++) {
                if (nl[i].type == "radio" && nl[i].name == s.name && nl[i].checked)
                    return false;
            }

            return true;
        }

        return new RegExp('^\\s*$').test(s.nodeType == 1 ? s.value : s);
    },

    isNumber : function(s, d) {
        return !isNaN(s.nodeType == 1 ? s.value : s) && (!d || !this.test(s, '^-?[0-9]*\\.[0-9]*$'));
    },

    test : function(s, p) {
        s = s.nodeType == 1 ? s.value : s;

        return s == '' || new RegExp(p).test(s);
    }
};

var AutoValidator = {
    settings : {
        id_cls : 'id',
        int_cls : 'int',
        url_cls : 'url',
        number_cls : 'number',
        email_cls : 'email',
        size_cls : 'size',
        required_cls : 'required',
        invalid_cls : 'invalid',
        min_cls : 'min',
        max_cls : 'max'
    },

    init : function(s) {
        var n;

        for (n in s)
            this.settings[n] = s[n];
    },

    validate : function(f) {
        var i, nl, s = this.settings, c = 0;

        nl = this.tags(f, 'label');
        for (i=0; i<nl.length; i++) {
            this.removeClass(nl[i], s.invalid_cls);
            nl[i].setAttribute('aria-invalid', false);
        }

        c += this.validateElms(f, 'input');
        c += this.validateElms(f, 'select');
        c += this.validateElms(f, 'textarea');

        return c == 3;
    },

    invalidate : function(n) {
        this.mark(n.form, n);
    },
    
    getErrorMessages : function(f) {
        var nl, i, s = this.settings, field, msg, values, messages = [], ed = tinyMCEPopup.editor;
        nl = this.tags(f, "label");
        for (i=0; i<nl.length; i++) {
            if (this.hasClass(nl[i], s.invalid_cls)) {
                field = document.getElementById(nl[i].getAttribute("for"));
                values = { field: nl[i].textContent };
                if (this.hasClass(field, s.min_cls, true)) {
                    message = ed.getLang('invalid_data_min');
                    values.min = this.getNum(field, s.min_cls);
                } else if (this.hasClass(field, s.number_cls)) {
                    message = ed.getLang('invalid_data_number');
                } else if (this.hasClass(field, s.size_cls)) {
                    message = ed.getLang('invalid_data_size');
                } else {
                    message = ed.getLang('invalid_data');
                }
                
                message = message.replace(/{\#([^}]+)\}/g, function(a, b) {
                    return values[b] || '{#' + b + '}';
                });
                messages.push(message);
            }
        }
        return messages;
    },

    reset : function(e) {
        var t = ['label', 'input', 'select', 'textarea'];
        var i, j, nl, s = this.settings;

        if (e == null)
            return;

        for (i=0; i<t.length; i++) {
            nl = this.tags(e.form ? e.form : e, t[i]);
            for (j=0; j<nl.length; j++) {
                this.removeClass(nl[j], s.invalid_cls);
                nl[j].setAttribute('aria-invalid', false);
            }
        }
    },

    validateElms : function(f, e) {
        var nl, i, n, s = this.settings, st = true, va = Validator, v;

        nl = this.tags(f, e);
        for (i=0; i<nl.length; i++) {
            n = nl[i];

            this.removeClass(n, s.invalid_cls);

            if (this.hasClass(n, s.required_cls) && va.isEmpty(n))
                st = this.mark(f, n);

            if (this.hasClass(n, s.number_cls) && !va.isNumber(n))
                st = this.mark(f, n);

            if (this.hasClass(n, s.int_cls) && !va.isNumber(n, true))
                st = this.mark(f, n);

            if (this.hasClass(n, s.url_cls) && !va.isAbsUrl(n))
                st = this.mark(f, n);

            if (this.hasClass(n, s.email_cls) && !va.isEmail(n))
                st = this.mark(f, n);

            if (this.hasClass(n, s.size_cls) && !va.isSize(n))
                st = this.mark(f, n);

            if (this.hasClass(n, s.id_cls) && !va.isId(n))
                st = this.mark(f, n);

            if (this.hasClass(n, s.min_cls, true)) {
                v = this.getNum(n, s.min_cls);

                if (isNaN(v) || parseInt(n.value) < parseInt(v))
                    st = this.mark(f, n);
            }

            if (this.hasClass(n, s.max_cls, true)) {
                v = this.getNum(n, s.max_cls);

                if (isNaN(v) || parseInt(n.value) > parseInt(v))
                    st = this.mark(f, n);
            }
        }

        return st;
    },

    hasClass : function(n, c, d) {
        return new RegExp('\\b' + c + (d ? '[0-9]+' : '') + '\\b', 'g').test(n.className);
    },

    getNum : function(n, c) {
        c = n.className.match(new RegExp('\\b' + c + '([0-9]+)\\b', 'g'))[0];
        c = c.replace(/[^0-9]/g, '');

        return c;
    },

    addClass : function(n, c, b) {
        var o = this.removeClass(n, c);
        n.className = b ? c + (o != '' ? (' ' + o) : '') : (o != '' ? (o + ' ') : '') + c;
    },

    removeClass : function(n, c) {
        c = n.className.replace(new RegExp("(^|\\s+)" + c + "(\\s+|$)"), ' ');
        return n.className = c != ' ' ? c : '';
    },

    tags : function(f, s) {
        return f.getElementsByTagName(s);
    },

    mark : function(f, n) {
        var s = this.settings;

        this.addClass(n, s.invalid_cls);
        n.setAttribute('aria-invalid', 'true');
        this.markLabels(f, n, s.invalid_cls);

        return false;
    },

    markLabels : function(f, n, ic) {
        var nl, i;

        nl = this.tags(f, "label");
        for (i=0; i<nl.length; i++) {
            if (nl[i].getAttribute("for") == n.id || nl[i].htmlFor == n.id)
                this.addClass(nl[i], ic);
        }

        return null;
    }
};
