if (document.location.hash)
{
	var	hash			= document.location.hash;
	hash				= hash.substring(1, hash.length);
	document.location	= document.location.pathname + '?' + hash;
}

var admin = {
	linkObj				: null,
	linkLabel			: null,
	documentTitle		: document.title,
	firstLoad			: true,
	autoSubtitle		: true,

	queryStringAdditions : function()
	{
		return 'app=' + applicationName
			+ '&barebones=true'
			+ '&queryStringAdditions=queryStringAdditions,app,barebones';
	}, // queryStringAdditions()

	menuClick : function(element)
	{
		// This function is fired when the user clicks on a menu item. It will retrieve the submenu and the
		// page's content via AJAX

		var href		= admin.getQueryString($(element).attr('href'));

		admin.loadPage(href, 'pageContent', 'get');
	}, // menuClick()

	ajaxSubmit : function(element)
	{
		// Temporary disable the submit button to prevent double submissions
		$(element).attr('disabled', 'disabled');
		setTimeout(function () { $(element).attr('disabled', ''); }, 1000);
		
		// Get the input button's parent form so we can serialize it and send it via ajax
		var ajaxForm	= $(element).parents('form');
		if (!ajaxForm)
		{
			alert('Error: this submit button\'s form element could not be found. Please make sure the submit button is located within a form element.');
			return false;
		}
		
		// Clear out help text
		TemplatePage.submitSwitchText(ajaxForm);

		// Get the hidden callback input. We use this as a callback function throughout the submission process
		var callback	= ajaxForm.find('input:hidden[name=callback]').val();

		// Run callback function
		if (callback && eval(callback + '(1);') == false) return false;

		// Get the hidden rel input. We use this to identify the container to update with the returned content
		var updateObjId	= ajaxForm.find('input:hidden[name=rel]').val();
		if (!updateObjId)
			updateObjId	= 'pageContent';

		var updateObj	= $('#' + updateObjId);

		// Grab any required fields that are not filled out. This will find inputs, textareas, selects, and button elements.
		// @todo make this work with radio buttons and checkboxes
		var emptyFields	= ajaxForm.find('.required :input[value=""], :input.required[value=""], .required :password[value=""], :password.required[value=""]');
		
		var unchecked	= ajaxForm.find('.required :checkbox, .required :radio').not(':checked');
		if (unchecked.length) // See if any are checked in the group
		{
			$.each(unchecked, function() {
				var checked	= $(this).parents('.required').find(':checkbox:checked, :radio:checked');
				if (!checked.length)
					emptyFields.push(this);
			});
		}
		
		var errorObj	= ajaxForm.find('div.errors');

		if (emptyFields.length)
		{
			// Get the text in each of the labels that point to empty required fields
			var labels			= new Array;

			$.each(emptyFields, function() {
				var inputId		= $(this).attr('id');
				if (inputId)
				{
					var label	= ajaxForm.find('label[for=' + inputId + ']');
					label		= (label.attr('title')) ? label.attr('title') : label.text();
					if (label != '') labels.push(label.replace(/^\s+|\s+$/g, ""));
				}
			});


			// Build the error message
			var errorMessage	= '<div class="error">You must complete all of the required fields on the form'
			errorMessage		+= (labels.length) ? ', such as ' : '.';
			
			// Turn the labels into a sentence
			var label;
			while(labels.length)
			{
				if (labels.length == 1)
				{
					label			= labels.shift();
					errorMessage	+= '<strong>' + label + '</strong>.';
				}
				else if (labels.length > 2)
				{
					label			= labels.shift();
					errorMessage	+= '<strong>' + label + '</strong>, ';
				}
				else
				{
					label			= labels.shift();
					var lastLabel	= labels.shift();
					errorMessage	+= '<strong>' + label + '</strong> and <strong>' + lastLabel + '</strong>.';
					break;
				}
			}

			errorMessage	+= '</div>';

			if (!errorObj.length) // The errors div does not exist yet, so we need to create it
			{
				ajaxForm.append('<div class="errors" style="display: none;"></div>');
				errorObj	= ajaxForm.find('div.errors');
			}

			// Put the error message into the errors div and slide it down so we can see it
			errorObj.html(errorMessage);
			errorObj.slideDown('fast');

			// Re-populate the help text
			TemplatePage.initSwitchText('form.ajax');

			// All done
			return false;
		}
		else // Validation was successful so we continue to submit the form
		{
			admin.startBusy(updateObj);

			// Clean up the errors div if it is showing
			if(errorObj.length)
				errorObj.slideUp('fast', function() { errorObj.html(''); });

			// Serialize the form data into a query string so we can send it with our ajax request
			var formFields	= ajaxForm.serialize();

			if (!admin.prompts(formFields)) {
				admin.stopBusy(updateObj);
				return false;
			}

			formFields				+= '&buttonClicked=' + encodeURI($(element).val());
			admin.loadPage(formFields, updateObjId, ajaxForm.attr('method'));

			return true;
		} // if

	}, // ajaxSubmit()

	ajaxClick : function(element)
	{
		var href			= admin.getQueryString($(element).attr('href'));

		// Get hidden callback value. We use this as a callback function throughout the submission process
		var callback		= TemplatePage.getParameter(href, 'callback');

		// Run callback function
		if (callback && eval(callback + '(1);') == false) return false;

		var updateObjId		= $(element).attr('rel');
		if (!updateObjId)
			updateObjId		= 'pageContent';

		var updateObj		= $('#' + updateObjId);

		if (!admin.prompts(href)) {
			admin.stopBusy(updateObj);
			return false;
		}

		admin.loadPage(href, updateObjId, TemplatePage.getParameter(href, 'method', 'get'));

	}, // ajaxClick()

	prompts : function (haystack)
	{
		var prompt		= TemplatePage.getParameter(haystack, 'prompt');
		switch (prompt)
		{
			case 'delete':
				var agree	= confirm('Are you sure you want to delete the ' + unescape(TemplatePage.getParameter(haystack, 'what')) + ' named "' + unescape(TemplatePage.getParameter(haystack, 'name')) + '"?\n\nRemember, there is no undo.');
				if (!agree) return false;
			break;

			case 'confirm':
				var agree	= confirm('Are you sure you want to ' + unescape(TemplatePage.getParameter(haystack, 'what', 'do that').replace(/\+/g, ' ')) + '?');
				if (!agree) return false;
			break;
		}
		return true;
	}, // prompts()

	getQueryString : function(href)
	{
		// Takes a url and returns the query string portion
		// e.g.: getQueryString('http://gustavus.edu?apples=3&oranges=5') will return 'apples=3&oranges=5'

		return href.replace(/(.*?)\?/g,'');
	}, // getQueryString()

	// DEPRECATED
	getParameter : function(haystack, needle, defaultValue)
	{
		return TemplatePage.getParameter(haystack, needle, defaultValue);
	}, // getParameter()

	startBusy : function(busyObj)
	{
		// Engage cues to communicate that something is happening and the user needs to wait:
		// fade out the loaded content, change the document title to "Loading...",
		// switch out the favicon for a throbber, and change the cursor to 'wait'

		if (busyObj) $(busyObj).fadeTo(1, .5);

		if (!$.browser.safari) // This will sorta work in Safari, but for some reason it doesn't like it very much right now
			document.title		= 'Loading...';

		$('head link.favicon').attr('href', '/modules/components/classes/admin/images/throbber.gif');
		$('head link.favicon').appendTo('head');

		$('body').css('cursor', 'wait');
	}, // startBusy()

	stopBusy : function(busyObj)
	{
		// Disengage all of the cues engaged by startBusy()

		if (busyObj) $(busyObj).fadeTo(1, 1);

		if (!$.browser.safari)
			document.title		= admin.documentTitle;

		$('head link.favicon').attr('href', '/favicon.ico');
		$('head link.favicon').appendTo('head');

		$('body').css('cursor', 'default');
	}, // stopBusy()

	logout : function()
	{
		// Remove cookies and clear out all but necessary content on the page
		// when the user logs out
		$('#pageContent').html('<p class="message">Please wait while you are being logged out. If you would like to access this area again, you must log back in.</p>');

		$('#menus').html('');
		$('#userMenu').html('');
	}, // logout(),

	loadPage : function(loc, rel, formMethod)
	{		
		if (rel == 'pageContent' && formMethod != 'post') // Adds a step to the history stack
		{
			$.historyLoad(encodeURI(loc.replace(/^.*#/, '')));
		}
		else
		{
			admin.doHistory(loc + '&rel=' + rel + '&ajaxMethod=' + formMethod);
		} // if
	}, // loadPage()

	doHistory : function(newLocation)
	{
		// When the hash changes, doHistory() takes care of switching
		// the content around so we don't break the back button

		var pr			= TemplatePage.getParameter(newLocation, 'pr');
		var pr2			= TemplatePage.getParameter(newLocation, 'pr2');

		if (newLocation != '' && pr == '') // inline link, don't load new content
			return true;

		if (!admin.firstLoad && newLocation == '') // went back to the beginning of the history stack, reload the page
		{
		   	window.location.reload(false);
			return true;
		} // if

		if (!admin.firstLoad || (admin.firstLoad && newLocation != ''))
		{
			if (admin.firstLoad)
				admin.firstLoad	= false;

			// Figure out what to update
			var updateObjId	= TemplatePage.getParameter(newLocation, 'rel', 'pageContent');

			admin.startBusy($('#' + updateObjId));

			var ajaxMethod		= TemplatePage.getParameter(newLocation, 'ajaxMethod', 'get');

			ajaxFunction	= (ajaxMethod == 'get') ? $.get : $.post;

			ajaxFunction(
				'/ajax.php',
				newLocation + '&' + admin.queryStringAdditions(),
				function(data, textStatus) {
					$('#' + updateObjId).html(data);
					admin.registerEvents('#' + updateObjId);
					admin.stopBusy($('#' + updateObjId));
				},
				'html'
			);

			// Highlight the menus
			$('#mainMenu a.currentPage').removeClass('currentPage');

			if (pr)
			{
				$('#mainmenu-' + pr + ' > a').addClass('currentPage');
				
				if (pr2)
					$('#submenu-' + pr + '-' + pr2 + ' > a').addClass('currentPage');
				else
					$('#mainmenu-' + pr + ' li:first > a').addClass('currentPage');
			}
			else
			{
				$('#mainMenu li:first > a, #mainMenu li:first li:first > a').addClass('currentPage');
			}
			
			// Update the subtitle
			if (admin.autoSubtitle)
			{
				var currentPr	= $('#mainMenu > ul > li > a.currentPage').parent();
				var subtitle	= $(currentPr).find('a.currentPage .text').html();
				var subtitleB	= $(currentPr).find('li a.currentPage .text').html();
				
				if (subtitleB != null)
					subtitle	+= ' / ' + subtitleB; 
				
				if (subtitle != '')
					$('#page-subtitle').html(subtitle);
				else
					$('#page-subtitle').hide();
			}
			
			// Track in analytics
			_gaq.push(['_trackPageview', document.location.pathname + '?' + newLocation]);

			return true;
		} // if
	}, // doHistory()

	registerEvents : function(container, firstLoad)
	{
		// Attach onclick events to make sure that our ajax links and forms will work.
		if (firstLoad)
		{
			$('#pageContent form.ajax input:submit').live('click', function() {
				admin.ajaxSubmit(this);
				return false;
			});

			$('#pageContent a.ajax').live('click', function() {
				admin.ajaxClick(this);
				return false;
			});
		}
		else
		{
			if (container == null) container = '#pageContent';
			Extend.apply('page', $(container)); // Things like striped tables
		}
	} // registerEvents()

} // admin

jQuery(function(){
	$.historyInit(admin.doHistory);
	$('#mainMenu a.menuAjax').click(function() { admin.menuClick(this); return false; });
	$('#subMenu a.menuAjax').click(function() { admin.menuClick(this); return false; });
	$('#adminlogout').click(function() { admin.logout(); });
	admin.registerEvents(null, true);
});