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Edit File: common.js

/* global setUserSetting, ajaxurl, commonL10n, alert, confirm, pagenow */
var showNotice, adminMenu, columns, validateForm, screenMeta;
( function( $, window, undefined ) {
	var $document = $( document ),
		$window = $( window ),
		$body = $( document.body );

// 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).removeClass( 'hidden' );
		this.colSpanChange(+1);
	},

unchecked : function(column) {
		$('.column-' + column).addClass( 'hidden' );
		this.colSpanChange(-1);
	},

hidden : function() {
		return $( '.manage-column[id]' ).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' ); } )
		.length;
};

// 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-links' ).find( '.show-settings' );
		this.page    = $('#wpcontent');

this.toggles.click( this.toggleEvent );
	},

toggleEvent: function() {
		var panel = $( '#' + $( this ).attr( 'aria-controls' ) );

if ( !panel.length )
			return;

if ( panel.is(':visible') )
			screenMeta.close( panel, $(this) );
		else
			screenMeta.open( panel, $(this) );
	},

open: function( panel, button ) {

$( '#screen-meta-links' ).find( '.screen-meta-toggle' ).not( button.parent() ).css( 'visibility', 'hidden' );

panel.parent().show();
		panel.slideDown( 'fast', function() {
			panel.focus();
			button.addClass( 'screen-meta-active' ).attr( 'aria-expanded', true );
		});

$document.trigger( 'screen:options:open' );
	},

close: function( panel, button ) {
		panel.slideUp( 'fast', function() {
			button.removeClass( 'screen-meta-active' ).attr( 'aria-expanded', false );
			$('.screen-meta-toggle').css('visibility', '');
			panel.parent().hide();
		});

$document.trigger( 'screen:options:close' );
	}
};

/**
 * Help tabs.
 */
$('.contextual-help-tabs').delegate('a', 'click', 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 checks, first, last, checked, sliced, mobileEvent, transitionTimeout, focusedRowActions,
		lastClicked = false,
		pageInput = $('input.current-page'),
		currentPage = pageInput.val(),
		isIOS = /iPhone|iPad|iPod/.test( navigator.userAgent ),
		isAndroid = navigator.userAgent.indexOf( 'Android' ) !== -1,
		isIE8 = $( document.documentElement ).hasClass( 'ie8' ),
		$adminMenuWrap = $( '#adminmenuwrap' ),
		$wpwrap = $( '#wpwrap' ),
		$adminmenu = $( '#adminmenu' ),
		$overlay = $( '#wp-responsive-overlay' ),
		$toolbar = $( '#wp-toolbar' ),
		$toolbarPopups = $toolbar.find( 'a[aria-haspopup="true"]' ),
		$sortables = $('.meta-box-sortables'),
		wpResponsiveActive = false,
		$adminbar = $( '#wpadminbar' ),
		lastScrollPosition = 0,
		pinnedMenuTop = false,
		pinnedMenuBottom = false,
		menuTop = 0,
		menuIsPinned = false,
		height = {
			window: $window.height(),
			wpwrap: $wpwrap.height(),
			adminbar: $adminbar.height(),
			menu: $adminMenuWrap.height()
		};

// when the menu is folded, make the fly-out submenu header clickable
	$adminmenu.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() {
		var respWidth, state;

// reset any compensation for submenus near the bottom of the screen
		$('#adminmenu div.wp-submenu').css('margin-top', '');

if ( window.innerWidth ) {
			// window.innerWidth is affected by zooming on phones
			respWidth = Math.max( window.innerWidth, document.documentElement.clientWidth );
		} else {
			// IE < 9 doesn't support @media CSS rules
			respWidth = 961;
		}

if ( respWidth && respWidth < 960 ) {
			if ( $body.hasClass('auto-fold') ) {
				$body.removeClass('auto-fold').removeClass('folded');
				setUserSetting('unfold', 1);
				setUserSetting('mfold', 'o');
				state = 'open';
			} else {
				$body.addClass('auto-fold');
				setUserSetting('unfold', 0);
				state = 'folded';
			}
		} else {
			if ( $body.hasClass('folded') ) {
				$body.removeClass('folded');
				setUserSetting('mfold', 'o');
				state = 'open';
			} else {
				$body.addClass('folded');
				setUserSetting('mfold', 'f');
				state = 'folded';
			}
		}

currentMenuItemHasPopup();
		$document.trigger( 'wp-collapse-menu', { state: state } );
	});

// Handle the `aria-haspopup` attribute on the current menu item when it has a sub-menu.
	function currentMenuItemHasPopup() {
		var respWidth,
			$current = $( 'a.wp-has-current-submenu' );

if ( window.innerWidth ) {
			respWidth = Math.max( window.innerWidth, document.documentElement.clientWidth );
		} else {
			respWidth = 961;
		}

if ( $body.hasClass( 'folded' ) || ( $body.hasClass( 'auto-fold' ) && respWidth && respWidth <= 960 && respWidth > 782 ) ) {
			// When folded or auto-folded and not responsive view, the current menu item does have a fly-out sub-menu.
			$current.attr( 'aria-haspopup', 'true' );
		} else {
			// When expanded or in responsive view, reset aria-haspopup.
			$current.attr( 'aria-haspopup', 'false' );
		}
	}

$document.on( 'wp-window-resized wp-responsive-activate wp-responsive-deactivate', currentMenuItemHasPopup );

/**
	 * Ensure an admin submenu is within the visual viewport.
	 *
	 * @since 4.1.0
	 *
	 * @param {jQuery} $menuItem The parent menu item containing the submenu.
	 */
	function adjustSubmenu( $menuItem ) {
		var bottomOffset, pageHeight, adjustment, theFold, menutop, wintop, maxtop,
			$submenu = $menuItem.find( '.wp-submenu' );

menutop = $menuItem.offset().top;
		wintop = $window.scrollTop();
		maxtop = menutop - wintop - 30; // max = make the top of the sub almost touch admin bar

bottomOffset = menutop + $submenu.height() + 1; // Bottom offset of the menu
		pageHeight = $wpwrap.height(); // Height of the entire page
		adjustment = 60 + bottomOffset - pageHeight;
		theFold = $window.height() + wintop - 50; // The fold

if ( theFold < ( bottomOffset - adjustment ) ) {
			adjustment = bottomOffset - theFold;
		}

if ( adjustment > maxtop ) {
			adjustment = maxtop;
		}

if ( adjustment > 1 ) {
			$submenu.css( 'margin-top', '-' + adjustment + 'px' );
		} else {
			$submenu.css( 'margin-top', '' );
		}
	}

if ( 'ontouchstart' in window || /IEMobile\/[1-9]/.test(navigator.userAgent) ) { // touch screen device
		// iOS Safari works with touchstart, the rest work with click
		mobileEvent = isIOS ? 'touchstart' : 'click';

// close any open submenus when touch/click is not on the menu
		$body.on( mobileEvent+'.wp-mobile-hover', function(e) {
			if ( $adminmenu.data('wp-responsive') ) {
				return;
			}

if ( ! $( e.target ).closest( '#adminmenu' ).length ) {
				$adminmenu.find( 'li.opensub' ).removeClass( 'opensub' );
			}
		});

$adminmenu.find( 'a.wp-has-submenu' ).on( mobileEvent + '.wp-mobile-hover', function( event ) {
			var $menuItem = $(this).parent();

if ( $adminmenu.data( 'wp-responsive' ) ) {
				return;
			}

// 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 ( ! $menuItem.hasClass( 'opensub' ) && ( ! $menuItem.hasClass( 'wp-menu-open' ) || $menuItem.width() < 40 ) ) {
				event.preventDefault();
				adjustSubmenu( $menuItem );
				$adminmenu.find( 'li.opensub' ).removeClass( 'opensub' );
				$menuItem.addClass('opensub');
			}
		});
	}

if ( ! isIOS && ! isAndroid ) {
		$adminmenu.find( 'li.wp-has-submenu' ).hoverIntent({
			over: function() {
				var $menuItem = $( this ),
					$submenu = $menuItem.find( '.wp-submenu' ),
					top = parseInt( $submenu.css( 'top' ), 10 );

if ( isNaN( top ) || top > -5 ) { // the submenu is visible
					return;
				}

if ( $adminmenu.data( 'wp-responsive' ) ) {
					// The menu is in responsive mode, bail
					return;
				}

adjustSubmenu( $menuItem );
				$adminmenu.find( 'li.opensub' ).removeClass( 'opensub' );
				$menuItem.addClass( 'opensub' );
			},
			out: function(){
				if ( $adminmenu.data( 'wp-responsive' ) ) {
					// The menu is in responsive mode, bail
					return;
				}

$( this ).removeClass( 'opensub' ).find( '.wp-submenu' ).css( 'margin-top', '' );
			},
			timeout: 200,
			sensitivity: 7,
			interval: 90
		});

$adminmenu.on( 'focus.adminmenu', '.wp-submenu a', function( event ) {
			if ( $adminmenu.data( 'wp-responsive' ) ) {
				// The menu is in responsive mode, bail
				return;
			}

$( event.target ).closest( 'li.menu-top' ).addClass( 'opensub' );
		}).on( 'blur.adminmenu', '.wp-submenu a', function( event ) {
			if ( $adminmenu.data( 'wp-responsive' ) ) {
				return;
			}

$( event.target ).closest( 'li.menu-top' ).removeClass( 'opensub' );
		}).find( 'li.wp-has-submenu.wp-not-current-submenu' ).on( 'focusin.adminmenu', function() {
			adjustSubmenu( $( this ) );
		});
	}

/*
	 * The `.below-h2` class is here just for backward compatibility with plugins
	 * that are (incorrectly) using it. Do not use. Use `.inline` instead. See #34570.
	 */
	$( 'div.updated, div.error, div.notice' ).not( '.inline, .below-h2' ).insertAfter( $( '.wrap h1, .wrap h2' ).first() );

// Make notices dismissible
	function makeNoticesDismissible() {
		$( '.notice.is-dismissible' ).each( function() {
			var $el = $( this ),
				$button = $( '<button type="button" class="notice-dismiss"><span class="screen-reader-text"></span></button>' ),
				btnText = commonL10n.dismiss || '';

// Ensure plain text
			$button.find( '.screen-reader-text' ).text( btnText );
			$button.on( 'click.wp-dismiss-notice', function( event ) {
				event.preventDefault();
				$el.fadeTo( 100, 0, function() {
					$el.slideUp( 100, function() {
						$el.remove();
					});
				});
			});

$el.append( $button );
		});
	}

$document.on( 'wp-updates-notice-added wp-plugin-install-error wp-plugin-update-error wp-plugin-delete-error wp-theme-install-error wp-theme-delete-error', makeNoticesDismissible );

// 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' ).filter( ':visible:enabled' );
			first = checks.index( lastClicked );
			last = checks.index( this );
			checked = $(this).prop('checked');
			if ( 0 < first && 0 < last && first != last ) {
				sliced = ( last > first ) ? checks.slice( first, last ) : checks.slice( last, first );
				sliced.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:enabled').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').on( 'click.wp-toggle-checkboxes', function( event ) {
		var $this = $(this),
			$table = $this.closest( 'table' ),
			controlChecked = $this.prop('checked'),
			toggle = event.shiftKey || $this.data('wp-toggle');

$table.children( 'tbody' ).filter(':visible')
			.children().children('.check-column').find(':checkbox')
			.prop('checked', function() {
				if ( $(this).is(':hidden,:disabled') ) {
					return false;
				}

if ( toggle ) {
					return ! $(this).prop( 'checked' );
				} else if ( controlChecked ) {
					return true;
				}

return false;
			});

$table.children('thead,  tfoot').filter(':visible')
			.children().children('.check-column').find(':checkbox')
			.prop('checked', function() {
				if ( toggle ) {
					return false;
				} else if ( controlChecked ) {
					return true;
				}

return false;
			});
	});

// Show row actions on keyboard focus of its parent container element or any other elements contained within
	$( '#wpbody-content' ).on({
		focusin: function() {
			clearTimeout( transitionTimeout );
			focusedRowActions = $( this ).find( '.row-actions' );
			// transitionTimeout is necessary for Firefox, but Chrome won't remove the CSS class without a little help.
			$( '.row-actions' ).not( this ).removeClass( 'visible' );
			focusedRowActions.addClass( 'visible' );
		},
		focusout: function() {
			// Tabbing between post title and .row-actions links needs a brief pause, otherwise
			// the .row-actions div gets hidden in transit in some browsers (ahem, Firefox).
			transitionTimeout = setTimeout( function() {
				focusedRowActions.removeClass( 'visible' );
			}, 30 );
		}
	}, '.has-row-actions' );

// Toggle list table rows on small screens
	$( 'tbody' ).on( 'click', '.toggle-row', function() {
		$( this ).closest( 'tr' ).toggleClass( 'is-expanded' );
	});

$('#default-password-nag-no').click( function() {
		setUserSetting('default_password_nag', 'hide');
		$('div.default-password-nag').hide();
		return false;
	});

// tab in textareas
	$('#newcontent').bind('keydown.wpevent_InsertTab', function(e) {
		var el = e.target, selStart, selEnd, val, scroll, sel;

if ( e.keyCode == 27 ) { // escape key
			// when pressing Escape: Opera 12 and 27 blur form fields, IE 8 clears them
			e.preventDefault();
			$(el).data('tab-out', true);
			return;
		}

if ( e.keyCode != 9 || e.ctrlKey || e.altKey || e.shiftKey ) // tab key
			return;

if ( $(el).data('tab-out') ) {
			$(el).data('tab-out', false);
			return;
		}

selStart = el.selectionStart;
		selEnd = el.selectionEnd;
		val = el.value;

if ( document.selection ) {
			el.focus();
			sel = document.selection.createRange();
			sel.text = '\t';
		} else if ( selStart >= 0 ) {
			scroll = this.scrollTop;
			el.value = val.substring(0, selStart).concat('\t', val.substring(selEnd) );
			el.selectionStart = el.selectionEnd = selStart + 1;
			this.scrollTop = scroll;
		}

if ( e.stopPropagation )
			e.stopPropagation();
		if ( e.preventDefault )
			e.preventDefault();
	});

if ( pageInput.length ) {
		pageInput.closest('form').submit( function() {

// Reset paging var for new filters/searches but not for bulk actions. See #17685.
			if ( $('select[name="action"]').val() == -1 && $('select[name="action2"]').val() == -1 && pageInput.val() == currentPage )
				pageInput.val('1');
		});
	}

$('.search-box input[type="search"], .search-box input[type="submit"]').mousedown(function () {
		$('select[name^="action"]').val('-1');
	});

// Scroll into view when focused
	$('#contextual-help-link, #show-settings-link').on( 'focus.scroll-into-view', function(e){
		if ( e.target.scrollIntoView )
			e.target.scrollIntoView(false);
	});

// Disable upload buttons until files are selected
	(function(){
		var button, input, form = $('form.wp-upload-form');
		if ( ! form.length )
			return;
		button = form.find('input[type="submit"]');
		input = form.find('input[type="file"]');

function toggleUploadButton() {
			button.prop('disabled', '' === input.map( function() {
				return $(this).val();
			}).get().join(''));
		}
		toggleUploadButton();
		input.on('change', toggleUploadButton);
	})();

function pinMenu( event ) {
		var windowPos = $window.scrollTop(),
			resizing = ! event || event.type !== 'scroll';

if ( isIOS || isIE8 || $adminmenu.data( 'wp-responsive' ) ) {
			return;
		}

if ( height.menu + height.adminbar < height.window ||
			height.menu + height.adminbar + 20 > height.wpwrap ) {
			unpinMenu();
			return;
		}

menuIsPinned = true;

if ( height.menu + height.adminbar > height.window ) {
			// Check for overscrolling
			if ( windowPos < 0 ) {
				if ( ! pinnedMenuTop ) {
					pinnedMenuTop = true;
					pinnedMenuBottom = false;

$adminMenuWrap.css({
						position: 'fixed',
						top: '',
						bottom: ''
					});
				}

return;
			} else if ( windowPos + height.window > $document.height() - 1 ) {
				if ( ! pinnedMenuBottom ) {
					pinnedMenuBottom = true;
					pinnedMenuTop = false;

$adminMenuWrap.css({
						position: 'fixed',
						top: '',
						bottom: 0
					});
				}

return;
			}

if ( windowPos > lastScrollPosition ) {
				// Scrolling down
				if ( pinnedMenuTop ) {
					// let it scroll
					pinnedMenuTop = false;
					menuTop = $adminMenuWrap.offset().top - height.adminbar - ( windowPos - lastScrollPosition );

if ( menuTop + height.menu + height.adminbar < windowPos + height.window ) {
						menuTop = windowPos + height.window - height.menu - height.adminbar;
					}

$adminMenuWrap.css({
						position: 'absolute',
						top: menuTop,
						bottom: ''
					});
				} else if ( ! pinnedMenuBottom && $adminMenuWrap.offset().top + height.menu < windowPos + height.window ) {
					// pin the bottom
					pinnedMenuBottom = true;

$adminMenuWrap.css({
						position: 'fixed',
						top: '',
						bottom: 0
					});
				}
			} else if ( windowPos < lastScrollPosition ) {
				// Scrolling up
				if ( pinnedMenuBottom ) {
					// let it scroll
					pinnedMenuBottom = false;
					menuTop = $adminMenuWrap.offset().top - height.adminbar + ( lastScrollPosition - windowPos );

if ( menuTop + height.menu > windowPos + height.window ) {
						menuTop = windowPos;
					}

$adminMenuWrap.css({
						position: 'absolute',
						top: menuTop,
						bottom: ''
					});
				} else if ( ! pinnedMenuTop && $adminMenuWrap.offset().top >= windowPos + height.adminbar ) {
					// pin the top
					pinnedMenuTop = true;

$adminMenuWrap.css({
						position: 'fixed',
						top: '',
						bottom: ''
					});
				}
			} else if ( resizing ) {
				// Resizing
				pinnedMenuTop = pinnedMenuBottom = false;
				menuTop = windowPos + height.window - height.menu - height.adminbar - 1;

if ( menuTop > 0 ) {
					$adminMenuWrap.css({
						position: 'absolute',
						top: menuTop,
						bottom: ''
					});
				} else {
					unpinMenu();
				}
			}
		}

lastScrollPosition = windowPos;
	}

function resetHeights() {
		height = {
			window: $window.height(),
			wpwrap: $wpwrap.height(),
			adminbar: $adminbar.height(),
			menu: $adminMenuWrap.height()
		};
	}

function unpinMenu() {
		if ( isIOS || ! menuIsPinned ) {
			return;
		}

pinnedMenuTop = pinnedMenuBottom = menuIsPinned = false;
		$adminMenuWrap.css({
			position: '',
			top: '',
			bottom: ''
		});
	}

function setPinMenu() {
		resetHeights();

if ( $adminmenu.data('wp-responsive') ) {
			$body.removeClass( 'sticky-menu' );
			unpinMenu();
		} else if ( height.menu + height.adminbar > height.window ) {
			pinMenu();
			$body.removeClass( 'sticky-menu' );
		} else {
			$body.addClass( 'sticky-menu' );
			unpinMenu();
		}
	}

if ( ! isIOS ) {
		$window.on( 'scroll.pin-menu', pinMenu );
		$document.on( 'tinymce-editor-init.pin-menu', function( event, editor ) {
			editor.on( 'wp-autoresize', resetHeights );
		});
	}

window.wpResponsive = {
		init: function() {
			var self = this;

// Modify functionality based on custom activate/deactivate event
			$document.on( 'wp-responsive-activate.wp-responsive', function() {
				self.activate();
			}).on( 'wp-responsive-deactivate.wp-responsive', function() {
				self.deactivate();
			});

$( '#wp-admin-bar-menu-toggle a' ).attr( 'aria-expanded', 'false' );

// Toggle sidebar when toggle is clicked
			$( '#wp-admin-bar-menu-toggle' ).on( 'click.wp-responsive', function( event ) {
				event.preventDefault();

// close any open toolbar submenus
				$adminbar.find( '.hover' ).removeClass( 'hover' );

$wpwrap.toggleClass( 'wp-responsive-open' );
				if ( $wpwrap.hasClass( 'wp-responsive-open' ) ) {
					$(this).find('a').attr( 'aria-expanded', 'true' );
					$( '#adminmenu a:first' ).focus();
				} else {
					$(this).find('a').attr( 'aria-expanded', 'false' );
				}
			} );

// Add menu events
			$adminmenu.on( 'click.wp-responsive', 'li.wp-has-submenu > a', function( event ) {
				if ( ! $adminmenu.data('wp-responsive') ) {
					return;
				}

$( this ).parent( 'li' ).toggleClass( 'selected' );
				event.preventDefault();
			});

self.trigger();
			$document.on( 'wp-window-resized.wp-responsive', $.proxy( this.trigger, this ) );

// This needs to run later as UI Sortable may be initialized later on $(document).ready()
			$window.on( 'load.wp-responsive', function() {
				var width = navigator.userAgent.indexOf('AppleWebKit/') > -1 ? $window.width() : window.innerWidth;

if ( width <= 782 ) {
					self.disableSortables();
				}
			});
		},

activate: function() {
			setPinMenu();

if ( ! $body.hasClass( 'auto-fold' ) ) {
				$body.addClass( 'auto-fold' );
			}

$adminmenu.data( 'wp-responsive', 1 );
			this.disableSortables();
		},

deactivate: function() {
			setPinMenu();
			$adminmenu.removeData('wp-responsive');
			this.enableSortables();
		},

trigger: function() {
			var width;

if ( window.innerWidth ) {
				// window.innerWidth is affected by zooming on phones
				width = Math.max( window.innerWidth, document.documentElement.clientWidth );
			} else {
				// Exclude IE < 9, it doesn't support @media CSS rules
				return;
			}

if ( width <= 782 ) {
				if ( ! wpResponsiveActive ) {
					$document.trigger( 'wp-responsive-activate' );
					wpResponsiveActive = true;
				}
			} else {
				if ( wpResponsiveActive ) {
					$document.trigger( 'wp-responsive-deactivate' );
					wpResponsiveActive = false;
				}
			}

if ( width <= 480 ) {
				this.enableOverlay();
			} else {
				this.disableOverlay();
			}
		},

enableOverlay: function() {
			if ( $overlay.length === 0 ) {
				$overlay = $( '<div id="wp-responsive-overlay"></div>' )
					.insertAfter( '#wpcontent' )
					.hide()
					.on( 'click.wp-responsive', function() {
						$toolbar.find( '.menupop.hover' ).removeClass( 'hover' );
						$( this ).hide();
					});
			}

$toolbarPopups.on( 'click.wp-responsive', function() {
				$overlay.show();
			});
		},

disableOverlay: function() {
			$toolbarPopups.off( 'click.wp-responsive' );
			$overlay.hide();
		},

disableSortables: function() {
			if ( $sortables.length ) {
				try {
					$sortables.sortable('disable');
				} catch(e) {}
			}
		},

enableSortables: function() {
			if ( $sortables.length ) {
				try {
					$sortables.sortable('enable');
				} catch(e) {}
			}
		}
	};

// Add an ARIA role `button` to elements that behave like UI controls when JavaScript is on.
	function aria_button_if_js() {
		$( '.aria-button-if-js' ).attr( 'role', 'button' );
	}

$( document ).ajaxComplete( function() {
		aria_button_if_js();
	});

window.wpResponsive.init();
	setPinMenu();
	currentMenuItemHasPopup();
	makeNoticesDismissible();
	aria_button_if_js();

$document.on( 'wp-pin-menu wp-window-resized.pin-menu postboxes-columnchange.pin-menu postbox-toggled.pin-menu wp-collapse-menu.pin-menu wp-scroll-start.pin-menu', setPinMenu );

// Set initial focus on a specific element.
	$( '.wp-initial-focus' ).focus();
});

// Fire a custom jQuery event at the end of window resize
( function() {
	var timeout;

function triggerEvent() {
		$document.trigger( 'wp-window-resized' );
	}

function fireOnce() {
		window.clearTimeout( timeout );
		timeout = window.setTimeout( triggerEvent, 200 );
	}

$window.on( 'resize.wp-fire-once', fireOnce );
}());

// Make Windows 8 devices play along nicely.
(function(){
	if ( '-ms-user-select' in document.documentElement.style && navigator.userAgent.match(/IEMobile\/10\.0/) ) {
		var msViewportStyle = document.createElement( 'style' );
		msViewportStyle.appendChild(
			document.createTextNode( '@-ms-viewport{width:auto!important}' )
		);
		document.getElementsByTagName( 'head' )[0].appendChild( msViewportStyle );
	}
})();

}( jQuery, window ));

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