/* nuget: begin license text
 *
 * microsoft grants you the right to use these script files for the sole
 * purpose of either: (i) interacting through your browser with the microsoft
 * website or online service, subject to the applicable licensing or use
 * terms; or (ii) using the files as included with a microsoft product subject
 * to that product's license terms. microsoft reserves all other rights to the
 * files not expressly granted by microsoft, whether by implication, estoppel
 * or otherwise. insofar as a script file is dual licensed under gpl,
 * microsoft neither took the code under gpl nor distributes it thereunder but
 * under the terms set out in this paragraph. all notices and licenses
 * below are for informational purposes only.
 *
 * nuget: end license text */
/*!
** unobtrusive ajax support library for jquery
** copyright (c) microsoft corporation. all rights reserved.
*/

/*jslint white: true, browser: true, onevar: true, undef: true, nomen: true, eqeqeq: true, plusplus: true, bitwise: true, regexp: true, newcap: true, immed: true, strict: false */
/*global window: false, jquery: false */

(function ($) {
    var data_click = "unobtrusiveajaxclick",
        data_validation = "unobtrusivevalidation";

    function getfunction(code, argnames) {
        var fn = window, parts = (code || "").split(".");
        while (fn && parts.length) {
            fn = fn[parts.shift()];
        }
        if (typeof (fn) === "function") {
            return fn;
        }
        argnames.push(code);
        return function.constructor.apply(null, argnames);
    }

    function ismethodproxysafe(method) {
        return method === "get" || method === "post";
    }

    function asynconbeforesend(xhr, method) {
        if (!ismethodproxysafe(method)) {
            xhr.setrequestheader("x-http-method-override", method);
        }
    }

    function asynconsuccess(element, data, contenttype) {
        var mode;

        if (contenttype.indexof("application/x-javascript") !== -1) {  // jquery already executes javascript for us
            return;
        }

        mode = (element.getattribute("data-ajax-mode") || "").touppercase();
        $(element.getattribute("data-ajax-update")).each(function (i, update) {
            var top;

            switch (mode) {
            case "before":
                top = update.firstchild;
                $("<div />").html(data).contents().each(function () {
                    update.insertbefore(this, top);
                });
                break;
            case "after":
                $("<div />").html(data).contents().each(function () {
                    update.appendchild(this);
                });
                break;
            default:
                $(update).html(data);
                break;
            }
        });
    }

    function asyncrequest(element, options) {
        var confirm, loading, method, duration;

        confirm = element.getattribute("data-ajax-confirm");
        if (confirm && !window.confirm(confirm)) {
            return;
        }

        loading = $(element.getattribute("data-ajax-loading"));
        duration = element.getattribute("data-ajax-loading-duration") || 0;

        $.extend(options, {
            type: element.getattribute("data-ajax-method") || undefined,
            url: element.getattribute("data-ajax-url") || undefined,
            beforesend: function (xhr) {
                var result;
                asynconbeforesend(xhr, method);
                result = getfunction(element.getattribute("data-ajax-begin"), ["xhr"]).apply(this, arguments);
                if (result !== false) {
                    loading.show(duration);
                }
                return result;
            },
            complete: function () {
                loading.hide(duration);
                getfunction(element.getattribute("data-ajax-complete"), ["xhr", "status"]).apply(this, arguments);
            },
            success: function (data, status, xhr) {
                asynconsuccess(element, data, xhr.getresponseheader("content-type") || "text/html");
                getfunction(element.getattribute("data-ajax-success"), ["data", "status", "xhr"]).apply(this, arguments);
            },
            error: getfunction(element.getattribute("data-ajax-failure"), ["xhr", "status", "error"])
        });

        options.data.push({ name: "x-requested-with", value: "xmlhttprequest" });

        method = options.type.touppercase();
        if (!ismethodproxysafe(method)) {
            options.type = "post";
            options.data.push({ name: "x-http-method-override", value: method });
        }

        $.ajax(options);
    }

    function validate(form) {
        var validationinfo = $(form).data(data_validation);
        return !validationinfo || !validationinfo.validate || validationinfo.validate();
    }

    $(document).on("click", "a[data-ajax=true]", function (evt) {
        evt.preventdefault();
        asyncrequest(this, {
            url: this.href,
            type: "get",
            data: []
        });
    });

    $(document).on("click", "form[data-ajax=true] input[type=image]", function (evt) {
        var name = evt.target.name,
            $target = $(evt.target),
            form = $target.parents("form")[0],
            offset = $target.offset();

        $(form).data(data_click, [
            { name: name + ".x", value: math.round(evt.pagex - offset.left) },
            { name: name + ".y", value: math.round(evt.pagey - offset.top) }
        ]);

        settimeout(function () {
            $(form).removedata(data_click);
        }, 0);
    });

    $(document).on("click", "form[data-ajax=true] :submit", function (evt) {
        var name = evt.target.name,
            form = $(evt.target).parents("form")[0];

        $(form).data(data_click, name ? [{ name: name, value: evt.target.value }] : []);

        settimeout(function () {
            $(form).removedata(data_click);
        }, 0);
    });

    $(document).on("submit", "form[data-ajax=true]", function (evt) {
        var clickinfo = $(this).data(data_click) || [];
        evt.preventdefault();
        if (!validate(this)) {
            return;
        }
        asyncrequest(this, {
            url: this.action,
            type: this.method || "get",
            data: clickinfo.concat($(this).serializearray())
        });
    });
}(jquery));