// Extensions to Core JS 
// and jQuery methods and objects

/**
* Easy access in Arrays to jQuerys $.each-function.
*/
Array.prototype.each = function (method) {
    $.each(this, method);
};

/**
* Format-function to format a string.
* Arguments: Unlimited, replaces {0} with first argument, {1} with second argument, and so forth
* Ex: "Hello {0}, this is {1}".format("world", "nice");
* Returns: "Hello world, this is nice"
*/
String.prototype.format = function () {
    var args = arguments;
    return this.replace(/{(\d+)}/g, function (o, m) {
        return args[m];
    });
};

String.prototype.capitalize = function () {
    return this.substring(0, 1).toUpperCase() + this.substring(1).toLowerCase();
};

String.prototype.isOneOf = function () {
    return $.inArray(this.toString(), arguments) > -1;
};


// Extend the document object
document.getLayout = function () {
    var _layout,
	    regex = /layout-\d+/i;
    function getLayout() {
        var result;
        if (!_layout) {
            result = regex.exec($('body').attr('class'));
            _layout = result ? result[0] : null;
        }
        return _layout;
    }
    return getLayout;
} ();
document.hasLayout = function (layout) {
    return document.getLayout() === layout;
};
document.getPageType = function () {
    var _pagetype;
    function getPageType() {
        _pagetype = _pagetype || $('body').attr('id');
        return _pagetype;
    }
    return getPageType;
} ();
document.hasPageType = function (type) {
    return document.getPageType() === type;
};
document.isStartPage = function () {
    return document.hasPageType('home');
};
document.isSubSectionPage = function () {
    return document.hasPageType('sub-section');
};

/**
* Article functions
* @requires jQuery
* Add article functions, e.g., 'Print' or 'Tell a friend'.
*/
document.articleFunctions = function () {
    var ul;
    function getUl() {
        if (!ul) {
            var funcs = $('#article-functions');
            if (funcs.length) {
                ul = $('ul', funcs);
                if (!ul.length) {
                    ul = $('<ul></ul>').prependTo(funcs);
                }
            }
        }
        return ul;
    }
    /**
    * Add an item
    * @param  options  Object  An object with options
    */
    function addItem(options) {
        var li, a;
        options = jQuery.extend({
            // Link html
            text: '',
            // Link (or li) class
            className: '',
            // Link (or li) id
            id: '',
            // Callback to execute on click
            callback: null,
            // An element to append the link to, bypassing the regular ul
            insertInto: null
        }, options || {});

        if (getUl() || options.insertInto) {
            // Create link
            a = $('<a href="#"></a>');
            a.html(options.text);
            a.click(options.callback);
            if (!options.insertInto) {
                // If no insertInto-element is specified,
                // append the link to an li and add it to the ul
                li = $('<li>');
                // Add class and id to the li
                li.attr({
                    'class': options.className,
                    'id': options.id
                });
                a.appendTo(li);
                li.appendTo(ul);
            } else {
                // Add class and id to the link
                a.attr({
                    'class': options.className,
                    'id': options.id
                });
                a.appendTo($(options.insertInto));
            }
            return a;
        }
    }
    return {
        addItem: addItem
    };
} ();

// Extend jQuery
(function ($) {

    var defaultValueClassName = 'default-value-set';

    $.extend($.fn, {
        rememberDefaultValue: function () {
            $(this).each(function () {
                var t = $(this);
                t.data('defaultValue', t.attr('title'));
                if (t.data('defaultValue')) {
                    t.resetDefaultValue();
                    t.focus(function (e) {
                        $(this).removeDefaultValue();
                    });
                    t.blur(function (e) {
                        $(this).resetDefaultValue();
                    });
                    t.closest('form').submit(function () {
                        if (t.valueIsDefault()) {
                            t.removeDefaultValue();
                        }
                    });
                }
            });
            return this;
        },
        valueIsDefault: function () {
            return $(this).val() === $(this).data('defaultValue');
        },
        removeDefaultValue: function () {
            $(this).each(function () {
                var t = $(this);
                if (t.valueIsDefault()) {
                    t.val('');
                    t.removeClass(defaultValueClassName);
                }
            });
            return this;
        },
        resetDefaultValue: function () {
            $(this).each(function () {
                var t = $(this);
                if (t.val() === '' || t.valueIsDefault()) {
                    t.addClass(defaultValueClassName);
                    t.val(t.data('defaultValue'));
                }
            });
            return this;
        },
        isExternal: function () {
            var docHost, linkHost;
            // Is it a link to begin with?
            if (this.attr('tagName').toLowerCase() == "a") {
                // A mailto link is not external
                if (this.attr('protocol') != "mailto:") {
                    // If the second-level domain matches the current one, it's not an external link
                    docHost = document.location.hostname.match(/\w+\.\w+$/);
                    linkHost = this.attr('hostname').match(/\w+\.\w+$/);
                    if (docHost[0] != linkHost[0]) {
                        // If the hostname matches any of the specified internal domains, it's not an external link
                        if ($.inArray(this.attr('hostname'), SolnaStad.InternalDomains) == -1) {
                            return true;
                        }
                    }
                }
            }
            return false;
        },
        getLabel: function () {
            var label;
            if (this.attr('tagName').toLowerCase().isOneOf('input', 'select', 'textarea') && this.attr('id')) {
                label = $('label[for=' + this.attr('id') + ']');
                return label;
            }
        }
    });
})(jQuery);

/**
* A simple querystring parser.
* Example usage: var q = $.parseQuery(); q.foo returns  "bar" if query contains "?foo=bar"; multiple values are added to an array. 
* Values are unescaped by default and plus signs replaced with spaces, or an alternate processing function can be passed in the params object .
* http://actingthemaggot.com/jquery
*
* Copyright (c) 2008 Michael Manning (http://actingthemaggot.com)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
**/
jQuery.parseQuery = function (qs, options) {
    var q = (typeof qs === 'string' ? qs : window.location.search), o = { 'f': function (v) { return unescape(v).replace(/\+/g, ' '); } }, options = (typeof qs === 'object' && typeof options === 'undefined') ? qs : options, o = jQuery.extend({}, o, options), params = {};
    jQuery.each(q.match(/^\??(.*)$/)[1].split('&'), function (i, p) {
        p = p.split('=');
        p[1] = o.f(p[1]);
        params[p[0]] = params[p[0]] ? ((params[p[0]] instanceof Array) ? (params[p[0]].push(p[1]), params[p[0]]) : [params[p[0]], p[1]]) : p[1];
    });
    return params;
};