Function AnimationStateManager

modular/sortable.complete.esm.js:539–668

()

var expando = 'Sortable' + new Date().getTime();

function AnimationStateManager() {
  var animationStates = [],
    animationCallbackId;
  return {
    captureAnimationState: function captureAnimationState() {
      animationStates = [];
      if (!this.options.animation) return;
      var children = [].slice.call(this.el.children);
      children.forEach(function (child) {
        if (css(child, 'display') === 'none' || child === Sortable.ghost) return;
        animationStates.push({
          target: child,
          rect: getRect(child)
        });
        var fromRect = _objectSpread2({}, animationStates[animationStates.length - 1].rect);

        // If animating: compensate for current animation
        if (child.thisAnimationDuration) {
          var childMatrix = matrix(child, true);
          if (childMatrix) {
            fromRect.top -= childMatrix.f;
            fromRect.left -= childMatrix.e;
          }
        }
        child.fromRect = fromRect;
      });
    },
    addAnimationState: function addAnimationState(state) {
      animationStates.push(state);
    },
    removeAnimationState: function removeAnimationState(target) {
      animationStates.splice(indexOfObject(animationStates, {
        target: target
      }), 1);
    },
    animateAll: function animateAll(callback) {
      var _this = this;
      if (!this.options.animation) {
        clearTimeout(animationCallbackId);
        if (typeof callback === 'function') callback();
        return;
      }
      var animating = false,
        animationTime = 0;
      animationStates.forEach(function (state) {
        var time = 0,
          target = state.target,
          fromRect = target.fromRect,
          toRect = getRect(target),
          prevFromRect = target.prevFromRect,
          prevToRect = target.prevToRect,
          animatingRect = state.rect,
          targetMatrix = matrix(target, true);
        if (targetMatrix) {
          // Compensate for current animation
          toRect.top -= targetMatrix.f;
          toRect.left -= targetMatrix.e;
        }