ant-design-vue/components/vc-dialog/DialogWrap.tsx

import Dialog from './Dialog';
import type { IDialogChildProps } from './IDialogPropTypes';
import getDialogPropTypes from './IDialogPropTypes';
import Portal from '../_util/PortalWrapper';
import { defineComponent, ref, watch } from 'vue';
import { useProvidePortal } from '../vc-trigger/context';
const IDialogPropTypes = getDialogPropTypes();
const DialogWrap = defineComponent({
  name: 'DialogWrap',
  inheritAttrs: false,
  props: {
    ...IDialogPropTypes,
    visible: IDialogPropTypes.visible.def(false),
  },
  setup(props, { attrs, slots }) {
    const animatedVisible = ref(props.visible);
    useProvidePortal({}, { inTriggerContext: false });
    watch(
      () => props.visible,
      () => {
        if (props.visible) {
          animatedVisible.value = true;
        }
      },
      { flush: 'post' },
    );
    return () => {
      const { visible, getContainer, forceRender, destroyOnClose = false, afterClose } = props;
      let dialogProps = {
        ...props,
        ...attrs,
        ref: '_component',
        key: 'dialog',
      } as IDialogChildProps;
      // 渲染在当前 dom 里；
      if (getContainer === false) {
        return (
          <Dialog
            {...dialogProps}
            getOpenCount={() => 2} // 不对 body 做任何操作。。
            v-slots={slots}
          ></Dialog>
        );
      }

      // Destroy on close will remove wrapped div
      if (!forceRender && destroyOnClose && !animatedVisible.value) {
        return null;
      }
      return (
        <Portal
          visible={visible}
          forceRender={forceRender}
          getContainer={getContainer}
          v-slots={{
            default: (childProps: IDialogChildProps) => {
              dialogProps = {
                ...dialogProps,
                ...childProps,
                afterClose: () => {
                  afterClose?.();
                  animatedVisible.value = false;
                },
              };
              return <Dialog {...dialogProps} v-slots={slots}></Dialog>;
            },
          }}
        />
      );
    };
  },
});

export default DialogWrap;