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| import { VantComponent } from '../common/component';
| import { isSameSecond, parseFormat, parseTimeData } from './utils';
| function simpleTick(fn) {
| return setTimeout(fn, 30);
| }
| VantComponent({
| props: {
| useSlot: Boolean,
| millisecond: Boolean,
| time: {
| type: Number,
| observer: 'reset',
| },
| format: {
| type: String,
| value: 'HH:mm:ss',
| },
| autoStart: {
| type: Boolean,
| value: true,
| },
| },
| data: {
| timeData: parseTimeData(0),
| formattedTime: '0',
| },
| destroyed() {
| clearTimeout(this.tid);
| this.tid = null;
| },
| methods: {
| // 开始
| start() {
| if (this.counting) {
| return;
| }
| this.counting = true;
| this.endTime = Date.now() + this.remain;
| this.tick();
| },
| // 暂停
| pause() {
| this.counting = false;
| clearTimeout(this.tid);
| },
| // 重置
| reset() {
| this.pause();
| this.remain = this.data.time;
| this.setRemain(this.remain);
| if (this.data.autoStart) {
| this.start();
| }
| },
| tick() {
| if (this.data.millisecond) {
| this.microTick();
| }
| else {
| this.macroTick();
| }
| },
| microTick() {
| this.tid = simpleTick(() => {
| this.setRemain(this.getRemain());
| if (this.remain !== 0) {
| this.microTick();
| }
| });
| },
| macroTick() {
| this.tid = simpleTick(() => {
| const remain = this.getRemain();
| if (!isSameSecond(remain, this.remain) || remain === 0) {
| this.setRemain(remain);
| }
| if (this.remain !== 0) {
| this.macroTick();
| }
| });
| },
| getRemain() {
| return Math.max(this.endTime - Date.now(), 0);
| },
| setRemain(remain) {
| this.remain = remain;
| const timeData = parseTimeData(remain);
| if (this.data.useSlot) {
| this.$emit('change', timeData);
| }
| this.setData({
| formattedTime: parseFormat(this.data.format, timeData),
| });
| if (remain === 0) {
| this.pause();
| this.$emit('finish');
| }
| },
| },
| });
|
|
