Function animateSetup

test/angular/1.3/angular-animate.js:1766–1827

(animationEvent, element, className, styles)

      }

      function animateSetup(animationEvent, element, className, styles) {
        var structural = ['ng-enter','ng-leave','ng-move'].indexOf(className) >= 0;

        var cacheKey = getCacheKey(element);
        var eventCacheKey = cacheKey + ' ' + className;
        var itemIndex = lookupCache[eventCacheKey] ? ++lookupCache[eventCacheKey].total : 0;

        var stagger = {};
        if (itemIndex > 0) {
          var staggerClassName = className + '-stagger';
          var staggerCacheKey = cacheKey + ' ' + staggerClassName;
          var applyClasses = !lookupCache[staggerCacheKey];

          applyClasses && $$jqLite.addClass(element, staggerClassName);

          stagger = getElementAnimationDetails(element, staggerCacheKey);

          applyClasses && $$jqLite.removeClass(element, staggerClassName);
        }

        $$jqLite.addClass(element, className);

        var formerData = element.data(NG_ANIMATE_CSS_DATA_KEY) || {};
        var timings = getElementAnimationDetails(element, eventCacheKey);
        var transitionDuration = timings.transitionDuration;
        var animationDuration = timings.animationDuration;

        if (structural && transitionDuration === 0 && animationDuration === 0) {
          $$jqLite.removeClass(element, className);
          return false;
        }

        var blockTransition = styles || (structural && transitionDuration > 0);
        var blockAnimation = animationDuration > 0 &&
                             stagger.animationDelay > 0 &&
                             stagger.animationDuration === 0;

        var closeAnimationFns = formerData.closeAnimationFns || [];
        element.data(NG_ANIMATE_CSS_DATA_KEY, {
          stagger: stagger,
          cacheKey: eventCacheKey,
          running: formerData.running || 0,
          itemIndex: itemIndex,
          blockTransition: blockTransition,
          closeAnimationFns: closeAnimationFns
        });

        var node = extractElementNode(element);

        if (blockTransition) {
          blockTransitions(node, true);
          if (styles) {
            element.css(styles);
          }
        }

        if (blockAnimation) {
          blockAnimations(node, true);