Function prepareAnchoredAnimation

test/angular/1.6/angular-animate.js:1577–1702

(classes, outAnchor, inAnchor)

    }

    function prepareAnchoredAnimation(classes, outAnchor, inAnchor) {
      var clone = jqLite(getDomNode(outAnchor).cloneNode(true));
      var startingClasses = filterCssClasses(getClassVal(clone));

      outAnchor.addClass(NG_ANIMATE_SHIM_CLASS_NAME);
      inAnchor.addClass(NG_ANIMATE_SHIM_CLASS_NAME);

      clone.addClass(NG_ANIMATE_ANCHOR_CLASS_NAME);

      rootBodyElement.append(clone);

      var animatorIn, animatorOut = prepareOutAnimation();

      // the user may not end up using the `out` animation and
      // only making use of the `in` animation or vice-versa.
      // In either case we should allow this and not assume the
      // animation is over unless both animations are not used.
      if (!animatorOut) {
        animatorIn = prepareInAnimation();
        if (!animatorIn) {
          return end();
        }
      }

      var startingAnimator = animatorOut || animatorIn;

      return {
        start: function() {
          var runner;

          var currentAnimation = startingAnimator.start();
          currentAnimation.done(function() {
            currentAnimation = null;
            if (!animatorIn) {
              animatorIn = prepareInAnimation();
              if (animatorIn) {
                currentAnimation = animatorIn.start();
                currentAnimation.done(function() {
                  currentAnimation = null;
                  end();
                  runner.complete();
                });
                return currentAnimation;
              }
            }
            // in the event that there is no `in` animation
            end();
            runner.complete();
          });

          runner = new $$AnimateRunner({
            end: endFn,
            cancel: endFn
          });

          return runner;

          function endFn() {