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   1  /**
   2   * Theme functions file.
   3   *
   4   * Contains handlers for navigation, accessibility, header sizing
   5   * footer widgets and Featured Content slider
   6   *
   7   */
   8  ( function( $ ) {
   9      var body    = $( 'body' ),
  10          _window = $( window ),
  11          nav, button, menu;
  12  
  13      nav = $( '#primary-navigation' );
  14      button = nav.find( '.menu-toggle' );
  15      menu = nav.find( '.nav-menu' );
  16  
  17      // Enable menu toggle for small screens.
  18      ( function() {
  19          if ( ! nav.length || ! button.length ) {
  20              return;
  21          }
  22  
  23          // Hide button if menu is missing or empty.
  24          if ( ! menu.length || ! menu.children().length ) {
  25              button.hide();
  26              return;
  27          }
  28  
  29          button.on( 'click.twentyfourteen', function() {
  30              nav.toggleClass( 'toggled-on' );
  31              if ( nav.hasClass( 'toggled-on' ) ) {
  32                  $( this ).attr( 'aria-expanded', 'true' );
  33                  menu.attr( 'aria-expanded', 'true' );
  34              } else {
  35                  $( this ).attr( 'aria-expanded', 'false' );
  36                  menu.attr( 'aria-expanded', 'false' );
  37              }
  38          } );
  39      } )();
  40  
  41      /*
  42       * Makes "skip to content" link work correctly in IE9 and Chrome for better
  43       * accessibility.
  44       *
  45       * @link http://www.nczonline.net/blog/2013/01/15/fixing-skip-to-content-links/
  46       */
  47      _window.on( 'hashchange.twentyfourteen', function() {
  48          var hash = location.hash.substring( 1 ), element;
  49  
  50          if ( ! hash ) {
  51              return;
  52          }
  53  
  54          element = document.getElementById( hash );
  55  
  56          if ( element ) {
  57              if ( ! /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) {
  58                  element.tabIndex = -1;
  59              }
  60  
  61              element.focus();
  62  
  63              // Repositions the window on jump-to-anchor to account for header height.
  64              window.scrollBy( 0, -80 );
  65          }
  66      } );
  67  
  68      $( function() {
  69          // Search toggle.
  70          $( '.search-toggle' ).on( 'click.twentyfourteen', function( event ) {
  71              var that    = $( this ),
  72                  wrapper = $( '#search-container' ),
  73                  container = that.find( 'a' );
  74  
  75              that.toggleClass( 'active' );
  76              wrapper.toggleClass( 'hide' );
  77  
  78              if ( that.hasClass( 'active' ) ) {
  79                  container.attr( 'aria-expanded', 'true' );
  80              } else {
  81                  container.attr( 'aria-expanded', 'false' );
  82              }
  83  
  84              if ( that.is( '.active' ) || $( '.search-toggle .screen-reader-text' )[0] === event.target ) {
  85                  wrapper.find( '.search-field' ).focus();
  86              }
  87          } );
  88  
  89          /*
  90           * Fixed header for large screen.
  91           * If the header becomes more than 48px tall, unfix the header.
  92           *
  93           * The callback on the scroll event is only added if there is a header
  94           * image and we are not on mobile.
  95           */
  96          if ( _window.width() > 781 ) {
  97              var mastheadHeight = $( '#masthead' ).height(),
  98                  toolbarOffset, mastheadOffset;
  99  
 100              if ( mastheadHeight > 48 ) {
 101                  body.removeClass( 'masthead-fixed' );
 102              }
 103  
 104              if ( body.is( '.header-image' ) ) {
 105                  toolbarOffset  = body.is( '.admin-bar' ) ? $( '#wpadminbar' ).height() : 0;
 106                  mastheadOffset = $( '#masthead' ).offset().top - toolbarOffset;
 107  
 108                  _window.on( 'scroll.twentyfourteen', function() {
 109                      if ( _window.scrollTop() > mastheadOffset && mastheadHeight < 49 ) {
 110                          body.addClass( 'masthead-fixed' );
 111                      } else {
 112                          body.removeClass( 'masthead-fixed' );
 113                      }
 114                  } );
 115              }
 116          }
 117  
 118          // Focus styles for menus.
 119          $( '.primary-navigation, .secondary-navigation' ).find( 'a' ).on( 'focus.twentyfourteen blur.twentyfourteen', function() {
 120              $( this ).parents().toggleClass( 'focus' );
 121          } );
 122      } );
 123  
 124      /**
 125       * Add or remove ARIA attributes.
 126       *
 127       * Uses jQuery's width() function to determine the size of the window and add
 128       * the default ARIA attributes for the menu toggle if it's visible.
 129       *
 130       * @since Twenty Fourteen 1.4
 131       */
 132  	function onResizeARIA() {
 133          if ( 781 > _window.width() ) {
 134              button.attr( 'aria-expanded', 'false' );
 135              menu.attr( 'aria-expanded', 'false' );
 136              button.attr( 'aria-controls', 'primary-menu' );
 137          } else {
 138              button.removeAttr( 'aria-expanded' );
 139              menu.removeAttr( 'aria-expanded' );
 140              button.removeAttr( 'aria-controls' );
 141          }
 142      }
 143  
 144      _window
 145          .on( 'load.twentyfourteen', onResizeARIA )
 146          .on( 'resize.twentyfourteen', function() {
 147              onResizeARIA();
 148      } );
 149  
 150      _window.on( 'load', function() {
 151          var footerSidebar,
 152              isCustomizeSelectiveRefresh = ( 'undefined' !== typeof wp && wp.customize && wp.customize.selectiveRefresh );
 153  
 154          // Arrange footer widgets vertically.
 155          if ( typeof $.fn.masonry === 'function' ) {
 156              footerSidebar = $( '#footer-sidebar' );
 157              footerSidebar.masonry( {
 158                  itemSelector: '.widget',
 159                  columnWidth: function( containerWidth ) {
 160                      return containerWidth / 4;
 161                  },
 162                  gutterWidth: 0,
 163                  isResizable: true,
 164                  isRTL: $( 'body' ).is( '.rtl' )
 165              } );
 166  
 167              if ( isCustomizeSelectiveRefresh ) {
 168  
 169                  // Retain previous masonry-brick initial position.
 170                  wp.customize.selectiveRefresh.bind( 'partial-content-rendered', function( placement ) {
 171                      var copyPosition = (
 172                          placement.partial.extended( wp.customize.widgetsPreview.WidgetPartial ) &&
 173                          placement.removedNodes instanceof jQuery &&
 174                          placement.removedNodes.is( '.masonry-brick' ) &&
 175                          placement.container instanceof jQuery
 176                      );
 177                      if ( copyPosition ) {
 178                          placement.container.css( {
 179                              position: placement.removedNodes.css( 'position' ),
 180                              top: placement.removedNodes.css( 'top' ),
 181                              left: placement.removedNodes.css( 'left' )
 182                          } );
 183                      }
 184                  } );
 185  
 186                  // Re-arrange footer widgets after selective refresh event.
 187                  wp.customize.selectiveRefresh.bind( 'sidebar-updated', function( sidebarPartial ) {
 188                      if ( 'sidebar-3' === sidebarPartial.sidebarId ) {
 189                          footerSidebar.masonry( 'reloadItems' );
 190                          footerSidebar.masonry( 'layout' );
 191                      }
 192                  } );
 193              }
 194          }
 195  
 196          // Initialize audio and video players in Twenty_Fourteen_Ephemera_Widget widget when selectively refreshed in Customizer.
 197          if ( isCustomizeSelectiveRefresh && wp.mediaelement ) {
 198              wp.customize.selectiveRefresh.bind( 'partial-content-rendered', function() {
 199                  wp.mediaelement.initialize();
 200              } );
 201          }
 202  
 203          // Initialize Featured Content slider.
 204          if ( body.is( '.slider' ) ) {
 205              $( '.featured-content' ).featuredslider( {
 206                  selector: '.featured-content-inner > article',
 207                  controlsContainer: '.featured-content'
 208              } );
 209          }
 210      } );
 211  } )( jQuery );