scrollspy.min.js 3.5 KB

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  1. /**
  2. * angular-strap
  3. * @version v2.3.9 - 2016-06-10
  4. * @link http://mgcrea.github.io/angular-strap
  5. * @author Olivier Louvignes <olivier@mg-crea.com> (https://github.com/mgcrea)
  6. * @license MIT License, http://www.opensource.org/licenses/MIT
  7. */
  8. 'use strict';angular.module('mgcrea.ngStrap.scrollspy',['mgcrea.ngStrap.helpers.debounce','mgcrea.ngStrap.helpers.dimensions']).provider('$scrollspy',function(){var e=this.$$spies={},t=this.defaults={debounce:150,throttle:100,offset:100};this.$get=['$window','$document','$rootScope','dimensions','debounce','throttle',function(n,o,r,c,i,s){function a(e,t){return e[0].nodeName&&e[0].nodeName.toLowerCase()===t.toLowerCase()}function l(o){var l=angular.extend({},t,o);l.element||(l.element=p);var d=a(l.element,'body'),h=d?u:l.element,m=d?'window':l.id;if(e[m])return e[m].$$count++,e[m];var g,v,$,k,E,T,y,b,C={},S=C.$trackedElements=[],L=[];return C.init=function(){this.$$count=1,k=i(this.checkPosition,l.debounce),E=s(this.checkPosition,l.throttle),h.on('click',this.checkPositionWithEventLoop),u.on('resize',k),h.on('scroll',E),T=i(this.checkOffsets,l.debounce),g=r.$on('$viewContentLoaded',T),v=r.$on('$includeContentLoaded',T),T(),m&&(e[m]=C)},C.destroy=function(){this.$$count--,this.$$count>0||(h.off('click',this.checkPositionWithEventLoop),u.off('resize',k),h.off('scroll',E),g(),v(),m&&delete e[m])},C.checkPosition=function(){if(L.length){if(b=(d?n.pageYOffset:h.prop('scrollTop'))||0,y=Math.max(n.innerHeight,f.prop('clientHeight')),b<L[0].offsetTop&&$!==L[0].target)return C.$activateElement(L[0]);for(var e=L.length;e--;)if(!angular.isUndefined(L[e].offsetTop)&&null!==L[e].offsetTop&&$!==L[e].target&&!(b<L[e].offsetTop||L[e+1]&&b>L[e+1].offsetTop))return C.$activateElement(L[e])}},C.checkPositionWithEventLoop=function(){setTimeout(C.checkPosition,1)},C.$activateElement=function(e){if($){var t=C.$getTrackedElement($);t&&(t.source.removeClass('active'),a(t.source,'li')&&a(t.source.parent().parent(),'li')&&t.source.parent().parent().removeClass('active'))}$=e.target,e.source.addClass('active'),a(e.source,'li')&&a(e.source.parent().parent(),'li')&&e.source.parent().parent().addClass('active')},C.$getTrackedElement=function(e){return S.filter(function(t){return t.target===e})[0]},C.checkOffsets=function(){angular.forEach(S,function(e){var t=document.querySelector(e.target);e.offsetTop=t?c.offset(t).top:null,l.offset&&null!==e.offsetTop&&(e.offsetTop-=1*l.offset)}),L=S.filter(function(e){return null!==e.offsetTop}).sort(function(e,t){return e.offsetTop-t.offsetTop}),k()},C.trackElement=function(e,t){S.push({target:e,source:t})},C.untrackElement=function(e,t){for(var n,o=S.length;o--;)if(S[o].target===e&&S[o].source===t){n=o;break}S.splice(n,1)},C.activate=function(e){S[e].addClass('active')},C.init(),C}var u=angular.element(n),f=angular.element(o.prop('documentElement')),p=angular.element(n.document.body);return l}]}).directive('bsScrollspy',['$rootScope','debounce','dimensions','$scrollspy',function(e,t,n,o){return{restrict:'EAC',link:function(e,t,n){var r={scope:e};angular.forEach(['offset','target'],function(e){angular.isDefined(n[e])&&(r[e]=n[e])});var c=o(r);c.trackElement(r.target,t),e.$on('$destroy',function(){c&&(c.untrackElement(r.target,t),c.destroy()),r=null,c=null})}}}]).directive('bsScrollspyList',['$rootScope','debounce','dimensions','$scrollspy',function(e,t,n,o){return{restrict:'A',compile:function(e,t){var n=e[0].querySelectorAll('li > a[href]');angular.forEach(n,function(e){var t=angular.element(e);t.parent().attr('bs-scrollspy','').attr('data-target',t.attr('href'))})}}}]);
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