Function performAnimation

test/angular/1.3/angular-animate.js:1287–1502

(animationEvent, className, element, parentElement, afterElement, domOperation, options, doneCallback)

        and the onComplete callback will be fired once the animation is fully complete.
      */
      function performAnimation(animationEvent, className, element, parentElement, afterElement, domOperation, options, doneCallback) {
        var noopCancel = noop;
        var runner = animationRunner(element, animationEvent, className, options);
        if (!runner) {
          fireDOMOperation();
          fireBeforeCallbackAsync();
          fireAfterCallbackAsync();
          closeAnimation();
          return noopCancel;
        }

        animationEvent = runner.event;
        className = runner.className;
        var elementEvents = angular.element._data(runner.node);
        elementEvents = elementEvents && elementEvents.events;

        if (!parentElement) {
          parentElement = afterElement ? afterElement.parent() : element.parent();
        }

        //skip the animation if animations are disabled, a parent is already being animated,
        //the element is not currently attached to the document body or then completely close
        //the animation if any matching animations are not found at all.
        //NOTE: IE8 + IE9 should close properly (run closeAnimation()) in case an animation was found.
        if (animationsDisabled(element, parentElement)) {
          fireDOMOperation();
          fireBeforeCallbackAsync();
          fireAfterCallbackAsync();
          closeAnimation();
          return noopCancel;
        }

        var ngAnimateState  = element.data(NG_ANIMATE_STATE) || {};
        var runningAnimations     = ngAnimateState.active || {};
        var totalActiveAnimations = ngAnimateState.totalActive || 0;
        var lastAnimation         = ngAnimateState.last;
        var skipAnimation = false;

        if (totalActiveAnimations > 0) {
          var animationsToCancel = [];
          if (!runner.isClassBased) {
            if (animationEvent == 'leave' && runningAnimations['ng-leave']) {
              skipAnimation = true;
            } else {
              //cancel all animations when a structural animation takes place
              for (var klass in runningAnimations) {
                animationsToCancel.push(runningAnimations[klass]);
              }
              ngAnimateState = {};
              cleanup(element, true);
            }
          } else if (lastAnimation.event == 'setClass') {
            animationsToCancel.push(lastAnimation);
            cleanup(element, className);
          } else if (runningAnimations[className]) {
            var current = runningAnimations[className];
            if (current.event == animationEvent) {
              skipAnimation = true;