vant/src/action-sheet/index.js

// Utils
import { createNamespace, pick } from '../utils';

// Components
import Icon from '../icon';
import Popup, { popupSharedProps } from '../popup';
import Loading from '../loading';

const [createComponent, bem] = createNamespace('action-sheet');

export default createComponent({
  props: {
    ...popupSharedProps,
    title: String,
    actions: Array,
    cancelText: String,
    description: String,
    closeOnPopstate: Boolean,
    closeOnClickAction: Boolean,
    round: {
      type: Boolean,
      default: true,
    },
    closeIcon: {
      type: String,
      default: 'cross',
    },
    safeAreaInsetBottom: {
      type: Boolean,
      default: true,
    },
  },

  emits: ['select', 'cancel', 'update:show'],

  setup(props, { slots, emit }) {
    const popupPropKeys = Object.keys(popupSharedProps);

    const onUpdateShow = (show) => {
      emit('update:show', show);
    };

    const onCancel = () => {
      onUpdateShow(false);
      emit('cancel');
    };

    const renderHeader = () => {
      if (props.title) {
        return (
          <div class={bem('header')}>
            {props.title}
            <Icon
              name={props.closeIcon}
              class={bem('close')}
              onClick={onCancel}
            />
          </div>
        );
      }
    };

    const renderCancel = () => {
      if (props.cancelText) {
        return [
          <div class={bem('gap')} />,
          <button type="button" class={bem('cancel')} onClick={onCancel}>
            {props.cancelText}
          </button>,
        ];
      }
    };

    const renderOption = (item, index) => {
      const { name, color, subname, loading, disabled, className } = item;

      const Content = loading ? (
        <Loading class={bem('loading-icon')} />
      ) : (
        [
          <span class={bem('name')}>{name}</span>,
          subname && <div class={bem('subname')}>{subname}</div>,
        ]
      );

      const onClick = () => {
        emit('select', item, index);
        if (props.closeOnClickAction) {
          emit('update:show', false);
        }
      };

      return (
        <button
          type="button"
          style={{ color }}
          class={[bem('item', { loading, disabled }), className]}
          onClick={onClick}
        >
          {Content}
        </button>
      );
    };

    const renderOptions = () => {
      if (props.actions) {
        return props.actions.map(renderOption);
      }
    };

    return () => {
      const { round, description } = props;

      const Content = slots.default && (
        <div class={bem('content')}>{slots.default()}</div>
      );

      const Description = description && (
        <div class={bem('description')}>{description}</div>
      );

      return (
        <Popup
          class={bem()}
          round={round}
          position="bottom"
          {...{
            ...pick(props, popupPropKeys),
            'onUpdate:show': onUpdateShow,
          }}
        >
          {renderHeader()}
          {Description}
          {renderOptions()}
          {Content}
          {renderCancel()}
        </Popup>
      );
    };
  },
});