index.js
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import { VantComponent } from '../common/component';
import { pickerProps } from '../picker/shared';
const COLUMNSPLACEHOLDERCODE = '000000';
VantComponent({
classes: ['active-class', 'toolbar-class', 'column-class'],
props: Object.assign(Object.assign({}, pickerProps), { value: String, areaList: {
type: Object,
value: {}
}, 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: [] }],
displayColumns: [{ values: [] }, { values: [] }, { values: [] }],
typeToColumnsPlaceholder: {}
},
watch: {
value(value) {
this.code = value;
this.setValues();
},
areaList: 'setValues',
columnsNum(value) {
this.setData({
displayColumns: this.data.columns.slice(0, +value)
});
}
},
mounted() {
setTimeout(() => {
this.setValues();
}, 0);
},
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.parseOutputValues(value);
this.emit('confirm', { value, index });
},
emit(type, detail) {
detail.values = detail.value;
delete detail.value;
this.$emit(type, detail);
},
// parse output columns data
parseOutputValues(values) {
const { columnsPlaceholder } = this.data;
return values.map((value, index) => {
// save undefined value
if (!value)
return value;
value = JSON.parse(JSON.stringify(value));
if (!value.code || value.name === columnsPlaceholder[index]) {
value.code = '';
value.name = '';
}
return value;
});
},
onChange(event) {
const { index, picker, value } = event.detail;
this.code = value[index].code;
this.setValues().then(() => {
this.$emit('change', {
picker,
values: this.parseOutputValues(picker.getValues()),
index
});
});
},
getConfig(type) {
const { areaList } = this.data;
return (areaList && areaList[`${type}_list`]) || {};
},
getList(type, code) {
const { typeToColumnsPlaceholder } = this.data;
let result = [];
if (type !== 'province' && !code) {
return result;
}
const list = this.getConfig(type);
result = Object.keys(list).map(code => ({
code,
name: list[code]
}));
if (code) {
// oversea code
if (code[0] === '9' && type === 'city') {
code = '9';
}
result = result.filter(item => item.code.indexOf(code) === 0);
}
if (typeToColumnsPlaceholder[type] && result.length) {
// set columns placeholder
const codeFill = type === 'province' ? '' : type === 'city' ? COLUMNSPLACEHOLDERCODE.slice(2, 4) : COLUMNSPLACEHOLDERCODE.slice(4, 6);
result.unshift({
code: `${code}${codeFill}`,
name: typeToColumnsPlaceholder[type]
});
}
return result;
},
getIndex(type, code) {
let compareNum = type === 'province' ? 2 : type === 'city' ? 4 : 6;
const list = this.getList(type, code.slice(0, compareNum - 2));
// oversea code
if (code[0] === '9' && type === 'province') {
compareNum = 1;
}
code = code.slice(0, compareNum);
for (let i = 0; i < list.length; i++) {
if (list[i].code.slice(0, compareNum) === code) {
return i;
}
}
return 0;
},
setValues() {
const county = this.getConfig('county');
let { code } = this;
if (!code) {
if (this.data.columnsPlaceholder.length) {
code = COLUMNSPLACEHOLDERCODE;
}
else if (Object.keys(county)[0]) {
code = Object.keys(county)[0];
}
else {
code = '';
}
}
const province = this.getList('province');
const city = this.getList('city', code.slice(0, 2));
const picker = this.getPicker();
if (!picker) {
return;
}
const stack = [];
stack.push(picker.setColumnValues(0, province, false));
stack.push(picker.setColumnValues(1, city, false));
if (city.length && code.slice(2, 4) === '00') {
[{ code }] = city;
}
stack.push(picker.setColumnValues(2, this.getList('county', code.slice(0, 4)), false));
return Promise.all(stack)
.catch(() => { })
.then(() => picker.setIndexes([
this.getIndex('province', code),
this.getIndex('city', code),
this.getIndex('county', code)
]))
.catch(() => { });
},
getValues() {
const picker = this.getPicker();
return picker ? picker.getValues().filter(value => !!value) : [];
},
getDetail() {
const values = this.getValues();
const area = {
code: '',
country: '',
province: '',
city: '',
county: ''
};
if (!values.length) {
return area;
}
const names = values.map((item) => item.name);
area.code = values[values.length - 1].code;
if (area.code[0] === '9') {
area.country = names[1] || '';
area.province = names[2] || '';
}
else {
area.province = names[0] || '';
area.city = names[1] || '';
area.county = names[2] || '';
}
return area;
},
reset(code) {
this.code = code || '';
return this.setValues();
}
}
});