Chris@0: /**
Chris@0: * DO NOT EDIT THIS FILE.
Chris@0: * See the following change record for more information,
Chris@0: * https://www.drupal.org/node/2815083
Chris@0: * @preserve
Chris@0: **/
Chris@0: 
Chris@0: (function ($, Drupal, debounce) {
Chris@0:   var offsets = {
Chris@0:     top: 0,
Chris@0:     right: 0,
Chris@0:     bottom: 0,
Chris@0:     left: 0
Chris@0:   };
Chris@0: 
Chris@0:   function getRawOffset(el, edge) {
Chris@0:     var $el = $(el);
Chris@0:     var documentElement = document.documentElement;
Chris@0:     var displacement = 0;
Chris@0:     var horizontal = edge === 'left' || edge === 'right';
Chris@0: 
Chris@0:     var placement = $el.offset()[horizontal ? 'left' : 'top'];
Chris@0: 
Chris@0:     placement -= window['scroll' + (horizontal ? 'X' : 'Y')] || document.documentElement['scroll' + (horizontal ? 'Left' : 'Top')] || 0;
Chris@0: 
Chris@0:     switch (edge) {
Chris@0:       case 'top':
Chris@0:         displacement = placement + $el.outerHeight();
Chris@0:         break;
Chris@0: 
Chris@0:       case 'left':
Chris@0:         displacement = placement + $el.outerWidth();
Chris@0:         break;
Chris@0: 
Chris@0:       case 'bottom':
Chris@0:         displacement = documentElement.clientHeight - placement;
Chris@0:         break;
Chris@0: 
Chris@0:       case 'right':
Chris@0:         displacement = documentElement.clientWidth - placement;
Chris@0:         break;
Chris@0: 
Chris@0:       default:
Chris@0:         displacement = 0;
Chris@0:     }
Chris@0:     return displacement;
Chris@0:   }
Chris@0: 
Chris@17:   function calculateOffset(edge) {
Chris@17:     var edgeOffset = 0;
Chris@17:     var displacingElements = document.querySelectorAll('[data-offset-' + edge + ']');
Chris@17:     var n = displacingElements.length;
Chris@17:     for (var i = 0; i < n; i++) {
Chris@17:       var el = displacingElements[i];
Chris@17: 
Chris@17:       if (el.style.display === 'none') {
Chris@17:         continue;
Chris@17:       }
Chris@17: 
Chris@17:       var displacement = parseInt(el.getAttribute('data-offset-' + edge), 10);
Chris@17: 
Chris@17:       if (isNaN(displacement)) {
Chris@17:         displacement = getRawOffset(el, edge);
Chris@17:       }
Chris@17: 
Chris@17:       edgeOffset = Math.max(edgeOffset, displacement);
Chris@17:     }
Chris@17: 
Chris@17:     return edgeOffset;
Chris@17:   }
Chris@17: 
Chris@17:   function calculateOffsets() {
Chris@17:     return {
Chris@17:       top: calculateOffset('top'),
Chris@17:       right: calculateOffset('right'),
Chris@17:       bottom: calculateOffset('bottom'),
Chris@17:       left: calculateOffset('left')
Chris@17:     };
Chris@17:   }
Chris@17: 
Chris@17:   function displace(broadcast) {
Chris@17:     offsets = calculateOffsets();
Chris@17:     Drupal.displace.offsets = offsets;
Chris@17:     if (typeof broadcast === 'undefined' || broadcast) {
Chris@17:       $(document).trigger('drupalViewportOffsetChange', offsets);
Chris@17:     }
Chris@17:     return offsets;
Chris@17:   }
Chris@17: 
Chris@17:   Drupal.behaviors.drupalDisplace = {
Chris@17:     attach: function attach() {
Chris@17:       if (this.displaceProcessed) {
Chris@17:         return;
Chris@17:       }
Chris@17:       this.displaceProcessed = true;
Chris@17: 
Chris@17:       $(window).on('resize.drupalDisplace', debounce(displace, 200));
Chris@17:     }
Chris@17:   };
Chris@17: 
Chris@0:   Drupal.displace = displace;
Chris@0:   $.extend(Drupal.displace, {
Chris@0:     offsets: offsets,
Chris@0: 
Chris@0:     calculateOffset: calculateOffset
Chris@0:   });
Chris@0: })(jQuery, Drupal, Drupal.debounce);