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/**
* @output wp-includes/js/admin-bar.js
*/
/**
* Admin bar with Vanilla JS, no external dependencies.
*
* @since 5.3.1
*
* @param {Object} document The document object.
* @param {Object} window The window object.
* @param {Object} navigator The navigator object.
*
* @return {void}
*/
( function( document, window, navigator ) {
document.addEventListener( 'DOMContentLoaded', function() {
var adminBar = document.getElementById( 'wpadminbar' ),
topMenuItems,
allMenuItems,
adminBarLogout,
adminBarSearchForm,
shortlink,
skipLink,
mobileEvent,
adminBarSearchInput,
i;
if ( ! adminBar || ! ( 'querySelectorAll' in adminBar ) ) {
return;
}
topMenuItems = adminBar.querySelectorAll( 'li.menupop' );
allMenuItems = adminBar.querySelectorAll( '.ab-item' );
adminBarLogout = document.querySelector( '#wp-admin-bar-logout a' );
adminBarSearchForm = document.getElementById( 'adminbarsearch' );
shortlink = document.getElementById( 'wp-admin-bar-get-shortlink' );
skipLink = adminBar.querySelector( '.screen-reader-shortcut' );
mobileEvent = /Mobile\/.+Safari/.test( navigator.userAgent ) ? 'touchstart' : 'click';
// Remove nojs class after the DOM is loaded.
removeClass( adminBar, 'nojs' );
if ( 'ontouchstart' in window ) {
// Remove hover class when the user touches outside the menu items.
document.body.addEventListener( mobileEvent, function( e ) {
if ( ! getClosest( e.target, 'li.menupop' ) ) {
removeAllHoverClass( topMenuItems );
}
} );
// Add listener for menu items to toggle hover class by touches.
// Remove the callback later for better performance.
adminBar.addEventListener( 'touchstart', function bindMobileEvents() {
for ( var i = 0; i < topMenuItems.length; i++ ) {
topMenuItems[i].addEventListener( 'click', mobileHover.bind( null, topMenuItems ) );
}
adminBar.removeEventListener( 'touchstart', bindMobileEvents );
} );
}
// Scroll page to top when clicking on the admin bar.
adminBar.addEventListener( 'click', scrollToTop );
for ( i = 0; i < topMenuItems.length; i++ ) {
// Adds or removes the hover class based on the hover intent.
window.hoverintent(
topMenuItems[i],
addClass.bind( null, topMenuItems[i], 'hover' ),
removeClass.bind( null, topMenuItems[i], 'hover' )
).options( {
timeout: 180
} );
// Toggle hover class if the enter key is pressed.
topMenuItems[i].addEventListener( 'keydown', toggleHoverIfEnter );
}
// Remove hover class if the escape key is pressed.
for ( i = 0; i < allMenuItems.length; i++ ) {
allMenuItems[i].addEventListener( 'keydown', removeHoverIfEscape );
}
if ( adminBarSearchForm ) {
adminBarSearchInput = document.getElementById( 'adminbar-search' );
// Adds the adminbar-focused class on focus.
adminBarSearchInput.addEventListener( 'focus', function() {
addClass( adminBarSearchForm, 'adminbar-focused' );
} );
// Removes the adminbar-focused class on blur.
adminBarSearchInput.addEventListener( 'blur', function() {
removeClass( adminBarSearchForm, 'adminbar-focused' );
} );
}
if ( shortlink ) {
shortlink.addEventListener( 'click', clickShortlink );
}
// Prevents the toolbar from covering up content when a hash is present in the URL.
if ( window.location.hash ) {
window.scrollBy( 0, -32 );
}
// Clear sessionStorage on logging out.
if ( adminBarLogout ) {
adminBarLogout.addEventListener( 'click', emptySessionStorage );
}
} );
/**
* Remove hover class for top level menu item when escape is pressed.
*
* @since 5.3.1
*
* @param {Event} event The keydown event.
*/
function removeHoverIfEscape( event ) {
var wrapper;
if ( event.which !== 27 ) {
return;
}
wrapper = getClosest( event.target, '.menupop' );
if ( ! wrapper ) {
return;
}
wrapper.querySelector( '.menupop > .ab-item' ).focus();
removeClass( wrapper, 'hover' );
}
/**
* Toggle hover class for top level menu item when enter is pressed.
*
* @since 5.3.1
*
* @param {Event} event The keydown event.
*/
function toggleHoverIfEnter( event ) {
var wrapper;
// Follow link if pressing Ctrl and/or Shift with Enter (opening in a new tab or window).
if ( event.which !== 13 || event.ctrlKey || event.shiftKey ) {
return;
}
if ( !! getClosest( event.target, '.ab-sub-wrapper' ) ) {
return;
}
wrapper = getClosest( event.target, '.menupop' );
if ( ! wrapper ) {
return;
}
event.preventDefault();
if ( hasClass( wrapper, 'hover' ) ) {
removeClass( wrapper, 'hover' );
} else {
addClass( wrapper, 'hover' );
}
}
/**
* Toggle hover class for mobile devices.
*
* @since 5.3.1
*
* @param {NodeList} topMenuItems All menu items.
* @param {Event} event The click event.
*/
function mobileHover( topMenuItems, event ) {
var wrapper;
if ( !! getClosest( event.target, '.ab-sub-wrapper' ) ) {
return;
}
event.preventDefault();
wrapper = getClosest( event.target, '.menupop' );
if ( ! wrapper ) {
return;
}
if ( hasClass( wrapper, 'hover' ) ) {
removeClass( wrapper, 'hover' );
} else {
removeAllHoverClass( topMenuItems );
addClass( wrapper, 'hover' );
}
}
/**
* Handles the click on the Shortlink link in the adminbar.
*
* @since 3.1.0
* @since 5.3.1 Use querySelector to clean up the function.
*
* @param {Event} event The click event.
* @return {boolean} Returns false to prevent default click behavior.
*/
function clickShortlink( event ) {
var wrapper = event.target.parentNode,
input;
if ( wrapper ) {
input = wrapper.querySelector( '.shortlink-input' );
}
if ( ! input ) {
return;
}
// (Old) IE doesn't support preventDefault, and does support returnValue.
if ( event.preventDefault ) {
event.preventDefault();
}
event.returnValue = false;
addClass( wrapper, 'selected' );
input.focus();
input.select();
input.onblur = function() {
removeClass( wrapper, 'selected' );
};
return false;
}
/**
* Clear sessionStorage on logging out.
*
* @since 5.3.1
*/
function emptySessionStorage() {
if ( 'sessionStorage' in window ) {
try {
for ( var key in sessionStorage ) {
if ( key.indexOf( 'wp-autosave-' ) > -1 ) {
sessionStorage.removeItem( key );
}
}
} catch ( er ) {}
}
}
/**
* Check if element has class.
*
* @since 5.3.1
*
* @param {HTMLElement} element The HTML element.
* @param {string} className The class name.
* @return {boolean} Whether the element has the className.
*/
function hasClass( element, className ) {
var classNames;
if ( ! element ) {
return false;
}
if ( element.classList && element.classList.contains ) {
return element.classList.contains( className );
} else if ( element.className ) {
classNames = element.className.split( ' ' );
return classNames.indexOf( className ) > -1;
}
return false;
}
/**
* Add class to an element.
*
* @since 5.3.1
*
* @param {HTMLElement} element The HTML element.
* @param {string} className The class name.
*/
function addClass( element, className ) {
if ( ! element ) {
return;
}
if ( element.classList && element.classList.add ) {
element.classList.add( className );
} else if ( ! hasClass( element, className ) ) {
if ( element.className ) {
element.className += ' ';
}
element.className += className;
}
var menuItemToggle = element.querySelector( 'a' );
if ( className === 'hover' && menuItemToggle && menuItemToggle.hasAttribute( 'aria-expanded' ) ) {
menuItemToggle.setAttribute( 'aria-expanded', 'true' );
}
}
/**
* Remove class from an element.
*
* @since 5.3.1
*
* @param {HTMLElement} element The HTML element.
* @param {string} className The class name.
*/
function removeClass( element, className ) {
var testName,
classes;
if ( ! element || ! hasClass( element, className ) ) {
return;
}
if ( element.classList && element.classList.remove ) {
element.classList.remove( className );
} else {
testName = ' ' + className + ' ';
classes = ' ' + element.className + ' ';
while ( classes.indexOf( testName ) > -1 ) {
classes = classes.replace( testName, '' );
}
element.className = classes.replace( /^[\s]+|[\s]+$/g, '' );
}
var menuItemToggle = element.querySelector( 'a' );
if ( className === 'hover' && menuItemToggle && menuItemToggle.hasAttribute( 'aria-expanded' ) ) {
menuItemToggle.setAttribute( 'aria-expanded', 'false' );
}
}
/**
* Remove hover class for all menu items.
*
* @since 5.3.1
*
* @param {NodeList} topMenuItems All menu items.
*/
function removeAllHoverClass( topMenuItems ) {
if ( topMenuItems && topMenuItems.length ) {
for ( var i = 0; i < topMenuItems.length; i++ ) {
removeClass( topMenuItems[i], 'hover' );
}
}
}
/**
* Scrolls to the top of the page.
*
* @since 3.4.0
*
* @param {Event} event The Click event.
*
* @return {void}
*/
function scrollToTop( event ) {
// Only scroll when clicking on the wpadminbar, not on menus or submenus.
if (
event.target &&
event.target.id !== 'wpadminbar' &&
event.target.id !== 'wp-admin-bar-top-secondary'
) {
return;
}
try {
window.scrollTo( {
top: -32,
left: 0,
behavior: 'smooth'
} );
} catch ( er ) {
window.scrollTo( 0, -32 );
}
}
/**
* Get closest Element.
*
* @since 5.3.1
*
* @param {HTMLElement} el Element to get parent.
* @param {string} selector CSS selector to match.
*/
function getClosest( el, selector ) {
if ( ! window.Element.prototype.matches ) {
// Polyfill from https://developer.mozilla.org/en-US/docs/Web/API/Element/matches.
window.Element.prototype.matches =
window.Element.prototype.matchesSelector ||
window.Element.prototype.mozMatchesSelector ||
window.Element.prototype.msMatchesSelector ||
window.Element.prototype.oMatchesSelector ||
window.Element.prototype.webkitMatchesSelector ||
function( s ) {
var matches = ( this.document || this.ownerDocument ).querySelectorAll( s ),
i = matches.length;
while ( --i >= 0 && matches.item( i ) !== this ) { }
return i > -1;
};
}
// Get the closest matching elent.
for ( ; el && el !== document; el = el.parentNode ) {
if ( el.matches( selector ) ) {
return el;
}
}
return null;
}
} )( document, window, navigator );