ant-design-vue/components/transfer/search.jsx

import PropTypes from '../_util/vue-types'
import { initDefaultProps, getOptionProps } from '../_util/props-util'
import Icon from '../icon'
import Input from '../input'

export const TransferSearchProps = {
  prefixCls: PropTypes.string,
  placeholder: PropTypes.string,
  value: PropTypes.any,
  handleClear: PropTypes.func,
  disabled: PropTypes.bool,
}

export default {
  name: 'Search',
  props: initDefaultProps(TransferSearchProps, {
    placeholder: '',
  }),
  methods: {
    handleChange (e) {
      this.$emit('change', e)
    },
    handleClear2 (e) {
      e.preventDefault()
      const { handleClear, disabled } = this.$props
      if (!disabled && handleClear) {
        handleClear(e)
      }
    },
  },
  render () {
    const { placeholder, value, prefixCls, disabled } = getOptionProps(this)
    const icon = (value && value.length > 0) ? (
      <a href='#' class={`${prefixCls}-action`} onClick={this.handleClear2}>
        <Icon type='close-circle' theme='filled'/>
      </a>
    ) : (
      <span class={`${prefixCls}-action`}><Icon type='search' /></span>
    )

    return (
      <div>
        <Input
          placeholder={placeholder}
          class={prefixCls}
          value={value}
          ref='input'
          onChange={this.handleChange}
          disabled={disabled}
        />
        {icon}
      </div>
    )
  },
}