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+import { VantComponent } from '../common/component';
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+import { ROW_HEIGHT, getPrevDay, getNextDay, getToday, compareDay, copyDates, calcDateNum, formatMonthTitle, compareMonth, getMonths, getDayByOffset, } from './utils';
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+import Toast from '../toast/toast';
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+import { requestAnimationFrame } from '../common/utils';
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+const initialMinDate = getToday().getTime();
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+const initialMaxDate = (() => {
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+ const now = getToday();
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+ return new Date(now.getFullYear(), now.getMonth() + 6, now.getDate()).getTime();
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+})();
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+const getTime = (date) => date instanceof Date ? date.getTime() : date;
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+VantComponent({
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+ props: {
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+ title: {
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+ type: String,
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+ value: '日期选择',
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+ },
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+ color: String,
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+ show: {
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+ type: Boolean,
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+ observer(val) {
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+ if (val) {
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+ this.initRect();
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+ this.scrollIntoView();
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+ }
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+ },
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+ },
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+ formatter: null,
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+ confirmText: {
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+ type: String,
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+ value: '确定',
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+ },
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+ confirmDisabledText: {
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+ type: String,
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+ value: '确定',
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+ },
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+ rangePrompt: String,
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+ showRangePrompt: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ defaultDate: {
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+ type: null,
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+ value: getToday().getTime(),
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+ observer(val) {
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+ this.setData({ currentDate: val });
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+ this.scrollIntoView();
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+ },
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+ },
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+ allowSameDay: Boolean,
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+ type: {
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+ type: String,
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+ value: 'single',
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+ observer: 'reset',
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+ },
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+ minDate: {
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+ type: Number,
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+ value: initialMinDate,
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+ },
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+ maxDate: {
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+ type: Number,
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+ value: initialMaxDate,
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+ },
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+ position: {
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+ type: String,
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+ value: 'bottom',
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+ },
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+ rowHeight: {
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+ type: null,
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+ value: ROW_HEIGHT,
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+ },
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+ round: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ poppable: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ showMark: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ showTitle: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ showConfirm: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ showSubtitle: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ safeAreaInsetBottom: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ closeOnClickOverlay: {
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+ type: Boolean,
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+ value: true,
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+ },
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+ maxRange: {
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+ type: null,
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+ value: null,
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+ },
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+ minRange: {
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+ type: Number,
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+ value: 1,
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+ },
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+ firstDayOfWeek: {
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+ type: Number,
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+ value: 0,
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+ },
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+ readonly: Boolean,
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+ rootPortal: {
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+ type: Boolean,
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+ value: false,
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+ },
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+ },
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+ data: {
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+ subtitle: '',
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+ currentDate: null,
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+ scrollIntoView: '',
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+ },
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+ watch: {
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+ minDate() {
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+ this.initRect();
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+ },
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+ maxDate() {
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+ this.initRect();
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+ },
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+ },
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+ created() {
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+ this.setData({
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+ currentDate: this.getInitialDate(this.data.defaultDate),
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+ });
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+ },
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+ mounted() {
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+ if (this.data.show || !this.data.poppable) {
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+ this.initRect();
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+ this.scrollIntoView();
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+ }
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+ },
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+ methods: {
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+ reset() {
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+ this.setData({ currentDate: this.getInitialDate(this.data.defaultDate) });
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+ this.scrollIntoView();
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+ },
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+ initRect() {
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+ if (this.contentObserver != null) {
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+ this.contentObserver.disconnect();
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+ }
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+ const contentObserver = this.createIntersectionObserver({
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+ thresholds: [0, 0.1, 0.9, 1],
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+ observeAll: true,
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+ });
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+ this.contentObserver = contentObserver;
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+ contentObserver.relativeTo('.van-calendar__body');
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+ contentObserver.observe('.month', (res) => {
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+ if (res.boundingClientRect.top <= res.relativeRect.top) {
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+ // @ts-ignore
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+ this.setData({ subtitle: formatMonthTitle(res.dataset.date) });
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+ }
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+ });
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+ },
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+ limitDateRange(date, minDate = null, maxDate = null) {
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+ minDate = minDate || this.data.minDate;
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+ maxDate = maxDate || this.data.maxDate;
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+ if (compareDay(date, minDate) === -1) {
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+ return minDate;
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+ }
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+ if (compareDay(date, maxDate) === 1) {
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+ return maxDate;
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+ }
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+ return date;
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+ },
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+ getInitialDate(defaultDate = null) {
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+ const { type, minDate, maxDate, allowSameDay } = this.data;
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+ if (!defaultDate)
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+ return [];
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+ const now = getToday().getTime();
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+ if (type === 'range') {
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+ if (!Array.isArray(defaultDate)) {
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+ defaultDate = [];
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+ }
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+ const [startDay, endDay] = defaultDate || [];
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+ const startDate = getTime(startDay || now);
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+ const start = this.limitDateRange(startDate, minDate, allowSameDay ? startDate : getPrevDay(new Date(maxDate)).getTime());
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+ const date = getTime(endDay || now);
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+ const end = this.limitDateRange(date, allowSameDay ? date : getNextDay(new Date(minDate)).getTime());
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+ return [start, end];
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+ }
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+ if (type === 'multiple') {
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+ if (Array.isArray(defaultDate)) {
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+ return defaultDate.map((date) => this.limitDateRange(date));
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+ }
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+ return [this.limitDateRange(now)];
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+ }
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+ if (!defaultDate || Array.isArray(defaultDate)) {
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+ defaultDate = now;
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+ }
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+ return this.limitDateRange(defaultDate);
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+ },
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+ scrollIntoView() {
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+ requestAnimationFrame(() => {
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+ const { currentDate, type, show, poppable, minDate, maxDate } = this.data;
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+ if (!currentDate)
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+ return;
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+ // @ts-ignore
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+ const targetDate = type === 'single' ? currentDate : currentDate[0];
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+ const displayed = show || !poppable;
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+ if (!targetDate || !displayed) {
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+ return;
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+ }
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+ const months = getMonths(minDate, maxDate);
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+ months.some((month, index) => {
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+ if (compareMonth(month, targetDate) === 0) {
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+ this.setData({ scrollIntoView: `month${index}` });
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+ return true;
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+ }
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+ return false;
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+ });
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+ });
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+ },
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+ onOpen() {
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+ this.$emit('open');
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+ },
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+ onOpened() {
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+ this.$emit('opened');
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+ },
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+ onClose() {
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+ this.$emit('close');
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+ },
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+ onClosed() {
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+ this.$emit('closed');
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+ },
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+ onClickDay(event) {
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+ if (this.data.readonly) {
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+ return;
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+ }
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+ let { date } = event.detail;
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+ const { type, currentDate, allowSameDay } = this.data;
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+ if (type === 'range') {
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+ // @ts-ignore
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+ const [startDay, endDay] = currentDate;
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+ if (startDay && !endDay) {
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+ const compareToStart = compareDay(date, startDay);
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+ if (compareToStart === 1) {
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+ const { days } = this.selectComponent('.month').data;
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+ days.some((day, index) => {
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+ const isDisabled = day.type === 'disabled' &&
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+ getTime(startDay) < getTime(day.date) &&
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+ getTime(day.date) < getTime(date);
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+ if (isDisabled) {
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+ ({ date } = days[index - 1]);
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+ }
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+ return isDisabled;
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+ });
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+ this.select([startDay, date], true);
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+ }
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+ else if (compareToStart === -1) {
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+ this.select([date, null]);
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+ }
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+ else if (allowSameDay) {
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+ this.select([date, date], true);
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+ }
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+ }
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+ else {
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+ this.select([date, null]);
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+ }
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+ }
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+ else if (type === 'multiple') {
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+ let selectedIndex;
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+ // @ts-ignore
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+ const selected = currentDate.some((dateItem, index) => {
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+ const equal = compareDay(dateItem, date) === 0;
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+ if (equal) {
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+ selectedIndex = index;
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+ }
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+ return equal;
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+ });
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+ if (selected) {
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+ // @ts-ignore
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+ const cancelDate = currentDate.splice(selectedIndex, 1);
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+ this.setData({ currentDate });
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+ this.unselect(cancelDate);
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+ }
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+ else {
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+ // @ts-ignore
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+ this.select([...currentDate, date]);
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+ }
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+ }
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+ else {
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+ this.select(date, true);
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+ }
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+ },
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+ unselect(dateArray) {
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+ const date = dateArray[0];
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+ if (date) {
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+ this.$emit('unselect', copyDates(date));
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+ }
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+ },
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+ select(date, complete) {
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+ if (complete && this.data.type === 'range') {
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+ const valid = this.checkRange(date);
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+ if (!valid) {
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+ // auto selected to max range if showConfirm
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+ if (this.data.showConfirm) {
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+ this.emit([
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+ date[0],
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+ getDayByOffset(date[0], this.data.maxRange - 1),
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+ ]);
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+ }
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+ else {
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+ this.emit(date);
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+ }
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+ return;
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+ }
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+ }
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+ this.emit(date);
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+ if (complete && !this.data.showConfirm) {
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+ this.onConfirm();
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+ }
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+ },
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+ emit(date) {
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+ this.setData({
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+ currentDate: Array.isArray(date) ? date.map(getTime) : getTime(date),
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+ });
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+ this.$emit('select', copyDates(date));
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+ },
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+ checkRange(date) {
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+ const { maxRange, rangePrompt, showRangePrompt } = this.data;
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+ if (maxRange && calcDateNum(date) > maxRange) {
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+ if (showRangePrompt) {
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+ Toast({
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+ context: this,
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+ message: rangePrompt || `选择天数不能超过 ${maxRange} 天`,
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+ });
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+ }
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+ this.$emit('over-range');
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+ return false;
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+ }
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+ return true;
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+ },
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+ onConfirm() {
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+ if (this.data.type === 'range' &&
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+ !this.checkRange(this.data.currentDate)) {
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+ return;
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+ }
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+ wx.nextTick(() => {
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+ // @ts-ignore
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+ this.$emit('confirm', copyDates(this.data.currentDate));
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+ });
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+ },
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+ onClickSubtitle(event) {
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+ this.$emit('click-subtitle', event);
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+ },
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+ },
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+});
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