@fe6/water-pro/es/transition/src/expand-transition-comp.js

An enterprise-class UI design language and Vue-based implementation

import { createVNode as _createVNode } from "vue";
import { defineComponent, inject, Transition } from 'vue';
import { addClass, removeClass } from '../../_util/dom';
import { defaultConfigProvider } from '../../config-provider';
import PropTypes from '../../_util/vue-types';
export default defineComponent({
  name: 'CollapseTransition',
  props: {
    prefixCls: PropTypes.string
  },
  setup: function setup(props) {
    // TODO [fix] 解决使用的过程中未用 configProvider 报错
    var configProvider = inject('configProvider', defaultConfigProvider) || defaultConfigProvider;
    var prefixClsNew = configProvider.getPrefixCls('transition', props.prefixCls);
    return {
      prefixClsNew: prefixClsNew
    };
  },
  render: function render() {
    var _this = this;

    var _a, _b;

    var transitionProps = {
      onBeforeEnter: function onBeforeEnter(el) {
        addClass(el, _this.prefixClsNew);

        if (!el.dataset) {
          el.dataset = {};
        }

        el.dataset.oldPaddingTop = el.style.paddingTop;
        el.dataset.oldPaddingBottom = el.style.paddingBottom;
        el.style.height = '0';
        el.style.paddingTop = 0;
        el.style.paddingBottom = 0;
      },
      onEnter: function onEnter(el) {
        el.dataset.oldOverflow = el.style.overflow;

        if (el.scrollHeight !== 0) {
          el.style.height = "".concat(el.scrollHeight, "px");
          el.style.paddingTop = el.dataset.oldPaddingTop;
          el.style.paddingBottom = el.dataset.oldPaddingBottom;
        } else {
          el.style.height = '';
          el.style.paddingTop = el.dataset.oldPaddingTop;
          el.style.paddingBottom = el.dataset.oldPaddingBottom;
        }

        el.style.overflow = 'hidden';
      },
      onAfterEnter: function onAfterEnter(el) {
        // for safari: remove class then reset height is necessary
        removeClass(el, _this.prefixClsNew);
        el.style.height = '';
        el.style.overflow = el.dataset.oldOverflow;
      },
      onBeforeLeave: function onBeforeLeave(el) {
        if (!el.dataset) {
          el.dataset = {};
        }

        el.dataset.oldPaddingTop = el.style.paddingTop;
        el.dataset.oldPaddingBottom = el.style.paddingBottom;
        el.dataset.oldOverflow = el.style.overflow;
        el.style.height = "".concat(el.scrollHeight, "px");
        el.style.overflow = 'hidden';
      },
      onLeave: function onLeave(el) {
        if (el.scrollHeight !== 0) {
          // for safari: add class after set height, or it will jump to zero height suddenly, weired
          addClass(el, _this.prefixClsNew); // in vue3.0.4, transitionProperty is set 'none' to avoid 'v-leave-from' issue

          el.style.transitionProperty = 'height';
          el.style.height = 0;
          el.style.paddingTop = 0;
          el.style.paddingBottom = 0;
        }
      },
      onAfterLeave: function onAfterLeave(el) {
        removeClass(el, _this.prefixClsNew);
        el.style.height = '';
        el.style.overflow = el.dataset.oldOverflow;
        el.style.paddingTop = el.dataset.oldPaddingTop;
        el.style.paddingBottom = el.dataset.oldPaddingBottom;
      }
    };
    return _createVNode(Transition, transitionProps, {
      default: function _default() {
        return [(_b = (_a = _this.$slots).default) === null || _b === void 0 ? void 0 : _b.call(_a)];
      }
    });
  }
});