'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _cssAnimation = require('css-animation');

var _cssAnimation2 = _interopRequireDefault(_cssAnimation);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

function animate(node, show, transitionName, done) {
  var height = void 0;
  return (0, _cssAnimation2['default'])(node, transitionName, {
    start: function start() {
      if (!show) {
        node.style.height = node.offsetHeight + 'px';
      } else {
        height = node.offsetHeight;
        node.style.height = 0;
      }
    },
    active: function active() {
      node.style.height = (show ? height : 0) + 'px';
    },
    end: function end() {
      node.style.height = '';
      done();
    }
  });
}

function animation(prefixCls) {
  return {
    enter: function enter(node, done) {
      return animate(node, true, prefixCls + '-anim', done);
    },
    leave: function leave(node, done) {
      return animate(node, false, prefixCls + '-anim', done);
    }
  };
}

exports['default'] = animation;
module.exports = exports['default'];