var showNotice, adminMenu, columns, validateForm, screenMeta;

(function($){

// Removed in 3.3.

// (perhaps) needed for back-compat

adminMenu = {

	init : function() {},

	fold : function() {},

	restoreMenuState : function() {},

	toggle : function() {},

	favorites : function() {}

};

// show/hide/save table columns

columns = {

	init : function() {

		var that = this;

		$('.hide-column-tog', '#adv-settings').click( function() {

			var $t = $(this), column = $t.val();

			if ( $t.prop('checked') )

				that.checked(column);

			else

				that.unchecked(column);

			columns.saveManageColumnsState();

		});

	},

	saveManageColumnsState : function() {

		var hidden = this.hidden();

		$.post(ajaxurl, {

			action: 'hidden-columns',

			hidden: hidden,

			screenoptionnonce: $('#screenoptionnonce').val(),

			page: pagenow

		});

	},

	checked : function(column) {

		$('.column-' + column).show();

		this.colSpanChange(+1);

	},

	unchecked : function(column) {

		$('.column-' + column).hide();

		this.colSpanChange(-1);

	},

	hidden : function() {

		return $('.manage-column').filter(':hidden').map(function() { return this.id; }).get().join(',');

	},

	useCheckboxesForHidden : function() {

		this.hidden = function(){

			return $('.hide-column-tog').not(':checked').map(function() {

				var id = this.id;

				return id.substring( id, id.length - 5 );

			}).get().join(',');

		};

	},

	colSpanChange : function(diff) {

		var $t = $('table').find('.colspanchange'), n;

		if ( !$t.length )

			return;

		n = parseInt( $t.attr('colspan'), 10 ) + diff;

		$t.attr('colspan', n.toString());

	}

}

$(document).ready(function(){columns.init();});

validateForm = function( form ) {

	return !$( form ).find('.form-required').filter( function() { return $('input:visible', this).val() == ''; } ).addClass( 'form-invalid' ).find('input:visible').change( function() { $(this).closest('.form-invalid').removeClass( 'form-invalid' ); } ).size();

}

// stub for doing better warnings

showNotice = {

	warn : function() {

		var msg = commonL10n.warnDelete || '';

		if ( confirm(msg) ) {

			return true;

		}

		return false;

	},

	note : function(text) {

		alert(text);

	}

};

screenMeta = {

	element: null, // #screen-meta

	toggles: null, // .screen-meta-toggle

	page:    null, // #wpcontent

	init: function() {

		this.element = $('#screen-meta');

		this.toggles = $('.screen-meta-toggle a');

		this.page    = $('#wpcontent');

		this.toggles.click( this.toggleEvent );

	},

	toggleEvent: function( e ) {

		var panel = $( this.href.replace(/.+#/, '#') );

		e.preventDefault();

		if ( !panel.length )

			return;

		if ( panel.is(':visible') )

			screenMeta.close( panel, $(this) );

		else

			screenMeta.open( panel, $(this) );

	},

	open: function( panel, link ) {

		$('.screen-meta-toggle').not( link.parent() ).css('visibility', 'hidden');

		panel.parent().show();

		panel.slideDown( 'fast', function() {

			panel.focus();

			link.addClass('screen-meta-active').attr('aria-expanded', true);

		});

	},

	close: function( panel, link ) {

		panel.slideUp( 'fast', function() {

			link.removeClass('screen-meta-active').attr('aria-expanded', false);

			$('.screen-meta-toggle').css('visibility', '');

			panel.parent().hide();

		});

	}

};

/**

 * Help tabs.

 */

$('.contextual-help-tabs').delegate('a', 'click focus', function(e) {

	var link = $(this),

		panel;

	e.preventDefault();

	// Don't do anything if the click is for the tab already showing.

	if ( link.is('.active a') )

		return false;

	// Links

	$('.contextual-help-tabs .active').removeClass('active');

	link.parent('li').addClass('active');

	panel = $( link.attr('href') );

	// Panels

	$('.help-tab-content').not( panel ).removeClass('active').hide();

	panel.addClass('active').show();

});

$(document).ready( function() {

	var lastClicked = false, checks, first, last, checked, menu = $('#adminmenu'), mobileEvent,

		pageInput = $('input.current-page'), currentPage = pageInput.val();

	// when the menu is folded, make the fly-out submenu header clickable

	menu.on('click.wp-submenu-head', '.wp-submenu-head', function(e){

		$(e.target).parent().siblings('a').get(0).click();

	});

	$('#collapse-menu').on('click.collapse-menu', function(e){

		var body = $(document.body);

		// reset any compensation for submenus near the bottom of the screen

		$('#adminmenu div.wp-submenu').css('margin-top', '');

		if ( $(window).width() < 900 ) {

			if ( body.hasClass('auto-fold') ) {

				body.removeClass('auto-fold');

				setUserSetting('unfold', 1);

				body.removeClass('folded');

				deleteUserSetting('mfold');

			} else {

				body.addClass('auto-fold');

				deleteUserSetting('unfold');

			}

		} else {

			if ( body.hasClass('folded') ) {

				body.removeClass('folded');

				deleteUserSetting('mfold');

			} else {

				body.addClass('folded');

				setUserSetting('mfold', 'f');

			}

		}

	});

	if ( 'ontouchstart' in window || /IEMobile\/[1-9]/.test(navigator.userAgent) ) { // touch screen device

		// iOS Safari works with touchstart, the rest work with click

		mobileEvent = /Mobile\/.+Safari/.test(navigator.userAgent) ? 'touchstart' : 'click';

		// close any open submenus when touch/click is not on the menu

		$(document.body).on( mobileEvent+'.wp-mobile-hover', function(e) {

			if ( !$(e.target).closest('#adminmenu').length )

				menu.find('li.wp-has-submenu.opensub').removeClass('opensub');

		});

		menu.find('a.wp-has-submenu').on( mobileEvent+'.wp-mobile-hover', function(e) {

			var el = $(this), parent = el.parent();

			// Show the sub instead of following the link if:

			//	- the submenu is not open

			//	- the submenu is not shown inline or the menu is not folded

			if ( !parent.hasClass('opensub') && ( !parent.hasClass('wp-menu-open') || parent.width() < 40 ) ) {

				e.preventDefault();

				menu.find('li.opensub').removeClass('opensub');

				parent.addClass('opensub');

			}

		});

	}

	menu.find('li.wp-has-submenu').hoverIntent({

		over: function(e){

			var b, h, o, f, m = $(this).find('.wp-submenu'), menutop, wintop, maxtop, top = parseInt( m.css('top'), 10 );

			if ( isNaN(top) || top > -5 ) // meaning the submenu is visible

				return;

			menutop = $(this).offset().top;

			wintop = $(window).scrollTop();

			maxtop = menutop - wintop - 30; // max = make the top of the sub almost touch admin bar

			b = menutop + m.height() + 1; // Bottom offset of the menu

			h = $('#wpwrap').height(); // Height of the entire page

			o = 60 + b - h;

			f = $(window).height() + wintop - 15; // The fold

			if ( f < (b - o) )

				o = b - f;

			if ( o > maxtop )

				o = maxtop;

			if ( o > 1 )

				m.css('margin-top', '-'+o+'px');

			else

				m.css('margin-top', '');

			menu.find('li.menu-top').removeClass('opensub');

			$(this).addClass('opensub');

		},

		out: function(){

			$(this).removeClass('opensub').find('.wp-submenu').css('margin-top', '');

		},

		timeout: 200,

		sensitivity: 7,

		interval: 90

	});

	menu.on('focus.adminmenu', '.wp-submenu a', function(e){

		$(e.target).closest('li.menu-top').addClass('opensub');

	}).on('blur.adminmenu', '.wp-submenu a', function(e){

		$(e.target).closest('li.menu-top').removeClass('opensub');

	});

	// Move .updated and .error alert boxes. Don't move boxes designed to be inline.

	$('div.wrap h2:first').nextAll('div.updated, div.error').addClass('below-h2');

	$('div.updated, div.error').not('.below-h2, .inline').insertAfter( $('div.wrap h2:first') );

	// Init screen meta

	screenMeta.init();

	// check all checkboxes

	$('tbody').children().children('.check-column').find(':checkbox').click( function(e) {

		if ( 'undefined' == e.shiftKey ) { return true; }

		if ( e.shiftKey ) {

			if ( !lastClicked ) { return true; }

			checks = $( lastClicked ).closest( 'form' ).find( ':checkbox' );

			first = checks.index( lastClicked );

			last = checks.index( this );

			checked = $(this).prop('checked');

			if ( 0 < first && 0 < last && first != last ) {

				checks.slice( first, last ).prop( 'checked', function(){

					if ( $(this).closest('tr').is(':visible') )

						return checked;

					return false;

				});

			}

		}

		lastClicked = this;

		// toggle "check all" checkboxes

		var unchecked = $(this).closest('tbody').find(':checkbox').filter(':visible').not(':checked');

		$(this).closest('table').children('thead, tfoot').find(':checkbox').prop('checked', function() {

			return ( 0 == unchecked.length );

		});

		return true;

	});

	$('thead, tfoot').find('.check-column :checkbox').click( function(e) {

		var c = $(this).prop('checked'),

			kbtoggle = 'undefined' == typeof toggleWithKeyboard ? false : toggleWithKeyboard,

			toggle = e.shiftKey || kbtoggle;

		$(this).closest( 'table' ).children( 'tbody' ).filter(':visible')

		.children().children('.check-column').find(':checkbox')

		.prop('checked', function() {

			if ( $(this).closest('tr').is(':hidden') )

				return false;

			if ( toggle )

				return $(this).prop( 'checked' );

			else if (c)

				return true;

			return false;

		});

		$(this).closest('table').children('thead,  tfoot').filter(':visible')

		.children().children('.check-column').find(':checkbox')

		.prop('checked', function() {

			if ( toggle )

				return false;

			else if (c)

				return true;

			return false;

		});

	});