miniprogram/node_modules/@vant/weapp/dist/area/index.js

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import { VantComponent } from '../common/component';
import { pickerProps } from '../picker/shared';
import { requestAnimationFrame } from '../common/utils';
const EMPTY_CODE = '000000';
VantComponent({
    classes: ['active-class', 'toolbar-class', 'column-class'],
    props: Object.assign(Object.assign({}, pickerProps), { value: {
            type: String,
            observer(value) {
                this.code = value;
                this.setValues();
            },
        }, areaList: {
            type: Object,
            value: {},
            observer: 'setValues',
        }, columnsNum: {
            type: null,
            value: 3,
        }, columnsPlaceholder: {
            type: Array,
            observer(val) {
                this.setData({
                    typeToColumnsPlaceholder: {
                        province: val[0] || '',
                        city: val[1] || '',
                        county: val[2] || '',
                    },
                });
            },
        } }),
    data: {
        columns: [{ values: [] }, { values: [] }, { values: [] }],
        typeToColumnsPlaceholder: {},
    },
    mounted() {
        requestAnimationFrame(() => {
            this.setValues();
        });
    },
    methods: {
        getPicker() {
            if (this.picker == null) {
                this.picker = this.selectComponent('.van-area__picker');
            }
            return this.picker;
        },
        onCancel(event) {
            this.emit('cancel', event.detail);
        },
        onConfirm(event) {
            const { index } = event.detail;
            let { value } = event.detail;
            value = this.parseValues(value);
            this.emit('confirm', { value, index });
        },
        emit(type, detail) {
            detail.values = detail.value;
            delete detail.value;
            this.$emit(type, detail);