jQuery.fn.extend({
    serializeValues: function () {
        if (!this.is("form")) {
            return null;
        }

        var sendValues = {};

        // get values
        var values = this.serializeArray();

        for (var i = 0; i < values.length; i++) {
            var name = values[i].name;

            // multi
            if (name in sendValues) {
                var val = sendValues[name];

                if (!(val instanceof Array)) {
                    val = [val];
                }

                val.push(values[i].value);
                sendValues[name] = val;
            } else {
                sendValues[name] = values[i].value;
            }
        }

        return sendValues;
    },

    ajaxSubmit: function (callback, ajaxOptions) {
        if (ajaxOptions === undefined) {
            ajaxOptions = {};
        }

        var $form = $(this[0].form || this[0]);

        // validation
        if ($form.get(0).onsubmit && !$form.get(0).onsubmit()) return null;

        // get values
        var sendValues = $form.serializeValues();
        if (this.is(":submit")) {
            sendValues[this.attr("name")] = this.val() || "";
        }

        // send ajax request
        ajaxOptions.url = $form.attr("action");
        ajaxOptions.data = sendValues;
        ajaxOptions.type = $form.attr("method") || "get";

        if (callback) {
            ajaxOptions.success = callback;
        }

        return jQuery.ajax(ajaxOptions);
    }
});

// ajax submit forms
$(function () {
    var $form = $("form.main_form");
    var submitForm = function (e, $form) {
        if( $form.find("input[type=file]").length === 0 ) {
            $("#ajax-spinner").show();
            $form.ajaxSubmit(jQuery.nette.success, {
                beforeSend: function (jqXHR) {
                    return Nette.validateForm($form);
                }
            });

            e.stopPropagation();
            e.preventDefault();

        } else {
            $form.submit();
        }
    };

    // odeslání na formulářích
    $form.live("submit", function (e) { submitForm(e, $(this)); });
    $form.find(":submit").live("submit", function (e) { submitForm(e, $(this).closest("form")); });

    $("form.datagrid :submit").live("click",function (e) {
        $("#ajax-spinner").show();
        $(this).ajaxSubmit(e);

        e.stopPropagation();
        e.preventDefault();
    });
});