ant-design-vue/components/modal/ActionButton.jsx

import PropTypes from '../_util/vue-types'
import Button from '../button'
import BaseMixin from '../_util/BaseMixin'
import buttonTypes from '../button/buttonTypes'
const ButtonType = buttonTypes().type
const ActionButtonProps = {
  type: ButtonType,
  actionFn: PropTypes.func,
  closeModal: PropTypes.func,
  autoFocus: PropTypes.bool,
}

export default {
  mixins: [BaseMixin],
  props: ActionButtonProps,
  data () {
    return {
      loading: false,
    }
  },
  mounted () {
    if (this.autoFocus) {
      this.timeoutId = setTimeout(() => this.$el.focus())
    }
  },
  beforeDestroy () {
    clearTimeout(this.timeoutId)
  },
  methods: {
    onClick () {
      const { actionFn, closeModal } = this
      if (actionFn) {
        let ret
        if (actionFn.length) {
          ret = actionFn(closeModal)
        } else {
          ret = actionFn()
          if (!ret) {
            closeModal()
          }
        }
        if (ret && ret.then) {
          this.setState({ loading: true })
          ret.then((...args) => {
          // It's unnecessary to set loading=false, for the Modal will be unmounted after close.
          // this.setState({ loading: false });
            closeModal(...args)
          }, () => {
          // See: https://github.com/ant-design/ant-design/issues/6183
            this.setState({ loading: false })
          })
        }
      } else {
        closeModal()
      }
    },
  },

  render () {
    const { type, $slots, loading } = this
    return (
      <Button type={type} onClick={this.onClick} loading={loading}>
        {$slots.default}
      </Button>
    )
  },
}