Current File : /var/www/projetos/hindi.ongrace.com/wp-content/themes/flash/js/navigation.js
/**
* File navigation.js.
*
* Handles toggling the navigation menu for small screens and enables TAB key
* navigation support for dropdown menus.
*/
( function () {
var container, button, menu, links, i, len;
container = document.getElementById( 'site-navigation' );
if ( !container ) {
return;
}
button = container.getElementsByClassName( 'menu-toggle' )[ 0 ];
if ( 'undefined' === typeof button ) {
return;
}
menu = container.getElementsByTagName( 'ul' )[ 0 ];
// Hide menu toggle button if menu is empty and return early.
if ( 'undefined' === typeof menu ) {
button.style.display = 'none';
return;
}
menu.setAttribute( 'aria-expanded', 'false' );
if ( -1 === menu.className.indexOf( 'nav-menu' ) ) {
menu.className += ' nav-menu';
}
button.onclick = function () {
if ( -1 !== container.className.indexOf( 'toggled' ) ) {
container.className = container.className.replace( ' toggled', '' );
button.setAttribute( 'aria-expanded', 'false' );
menu.setAttribute( 'aria-expanded', 'false' );
} else {
container.className += ' toggled';
button.setAttribute( 'aria-expanded', 'true' );
menu.setAttribute( 'aria-expanded', 'true' );
}
};
// Get all the link elements within the menu.
links = menu.getElementsByTagName( 'a' );
// Each time a menu link is focused or blurred, toggle focus.
for ( i = 0, len = links.length; i < len; i++ ) {
links[ i ].addEventListener( 'focus', toggleFocus, true );
links[ i ].addEventListener( 'blur', toggleFocus, true );
}
/**
* Sets or removes .focus class on an element.
*/
function toggleFocus() {
var self = this;
// Move up through the ancestors of the current link until we hit .nav-menu.
while ( -1 === self.className.indexOf( 'nav-menu' ) ) {
// On li elements toggle the class .focus.
if ( 'li' === self.tagName.toLowerCase() ) {
if ( -1 !== self.className.indexOf( 'focus' ) ) {
self.className = self.className.replace( ' focus', '' );
} else {
self.className += ' focus';
}
}
self = self.parentElement;
}
}
/**
* Toggles `focus` class to allow submenu access on tablets.
*/
( function ( container ) {
var touchStartFn, i,
parentLink = container.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' );
if ( 'ontouchstart' in window ) {
touchStartFn = function ( e ) {
var menuItem = this.parentNode, i;
if ( !menuItem.classList.contains( 'focus' ) ) {
e.preventDefault();
for ( i = 0; i < menuItem.parentNode.children.length; ++i ) {
if ( menuItem === menuItem.parentNode.children[ i ] ) {
continue;
}
menuItem.parentNode.children[ i ].classList.remove( 'focus' );
}
menuItem.classList.add( 'focus' );
} else {
menuItem.classList.remove( 'focus' );
}
};
for ( i = 0; i < parentLink.length; ++i ) {
parentLink[ i ].addEventListener( 'touchstart', touchStartFn, false );
}
}
}( container ) );
} )();
/**
* Scrollbar on small device menu when header is sticky
*
*/
jQuery( window ).load( function () {
// Check screen width and if sticky header
if ( window.matchMedia( '(max-width: 980px)' ).matches && jQuery( '#masthead-sticky-wrapper' ).length >= 1 ) {
// Available viewport height
var screenHeight = jQuery( window ).height();
// Get top and bottom header
var headerTop = jQuery( '#masthead > .header-top' );
var headerBtm = jQuery( '#masthead > .header-bottom' );
// Height of top and bottom header
var headerTopHt = 0;
var headerBtmHt = 0;
if ( headerTop.length > 0 && headerTop.css( 'display' ) != 'none' ) {
headerTopHt = headerTop.outerHeight();
}
if ( headerBtm.length > 0 && headerBtm.css( 'display' ) != 'none' ) {
headerBtmHt = headerBtm.outerHeight();
}
// Actual height available for menu
var availableMenuHeight = screenHeight-headerTopHt-headerBtmHt-50; // Reduce extra 50 px height
var menu = jQuery( '#site-navigation' ).find( 'ul' ).first();
menu.css( 'max-height', availableMenuHeight );
menu.addClass( 'menu-scrollbar' );
}
} );
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