/**
 * 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);
			}
		},

		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) {
		$.nette.href = null;
		$.post(event.originalEvent.state.href, $.nette.success);
	});

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

	$.nette.createSpinner();

	var $ajaxLinks = $('.ajax');

	// apply AJAX unobtrusive way
	$ajaxLinks.click(function(event) {
	    
	    event.preventDefault();
	    
	    if(this.href != window.location) {
		$ajaxLinks.removeClass('current');
		$(this).addClass('current');

		if ($.active) return;
		_gaq.push(['_trackPageview', $(this).attr('href')]);
		$.post($.nette.href = this.href, $.nette.success);

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

});