/**
 * AJAX Nette Framwork plugin for jQuery
 *
 * @copyright  Copyright (c) 2009, 2010 Jan Marek
 * @copyright  Copyright (c) 2009, 2010 David Grudl
 * @license    MIT
 * @link       http://nette.org/cs/extras/jquery-ajax
 */

/*
if (typeof jQuery != 'function') {
    alert('jQuery was not loaded');
}
*/

(function($) {

    $.nette = {
        success: function(payload)
        {
            // redirect
            if (payload.redirect) {
                window.location.href = payload.redirect;
                return;
            }

            // state
            if (payload.state) {
                $.nette.state = payload.state;
            }

            // snippets
            if (payload.snippets) {
                for (var i in payload.snippets) {
                    $.nette.updateSnippet(i, payload.snippets[i]);
                }
            }

            // change URL (requires HTML5)
            if (window.history && history.pushState && $.nette.href) {
                history.pushState({href: $.nette.href}, '', $.nette.href);
            }
                        
            $.nette.afterSuccess(payload);
        },
                
        afterSuccess: function(payload) {},

        updateSnippet: function(id, html)
        {
            $('#' + id).html(html);
        },

        // create animated spinner
        createSpinner: function(id)
        {
            return this.spinner = $('<div></div>').attr('id', id ? id : 'ajax-spinner').ajaxStart(function() {
                $(this).show();

            }).ajaxStop(function() {
                $(this).hide().css({
                    position: 'fixed',
                    left: '50%',
                    top: '50%'
                });

            }).appendTo('body').hide();
        },

        // current page state
        state: null,
        href: null,

        // spinner element
        spinner: null
    };


})(jQuery);



jQuery(function($) {
    // HTML 5 popstate event
    $(window).bind('popstate', function(event) {
        var state = event.originalEvent.state;
        $.nette.href = null;
        $.post(state == null ? '' : state.href, $.nette.success);
    });

    $.ajaxSetup({
        success: $.nette.success,
        dataType: 'json'
    });

    $.nette.createSpinner();

    // apply AJAX unobtrusive way
    $('a.ajax').live('click', function(event) {
        event.preventDefault();
        if ($.active) return;

        $.post($.nette.href = this.href, $.nette.success);

        $.nette.spinner.css({
            position: 'absolute',
            left: event.pageX,
            top: event.pageY
        });
    });

});