147 lines
4.3 KiB
Vue
147 lines
4.3 KiB
Vue
<template>
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<div class="at-select" :class="{ 'at-select--visible': visible }">
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<v-select
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ref="select"
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v-model="model"
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class="timezone-select"
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:options="paginated"
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:filterable="false"
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:placeholder="$t('control.select')"
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@open="onOpen"
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@close="onClose"
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@search="search = $event"
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>
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<template #list-footer>
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<li v-show="hasNextPage" ref="load" class="vs__dropdown-option">Loading...</li>
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</template>
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</v-select>
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<i class="icon icon-chevron-down at-select__arrow" />
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</div>
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</template>
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<script>
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import moment from 'moment-timezone';
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import vSelect from 'vue-select';
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export default {
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props: {
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value: {
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type: [String, Object],
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required: true,
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},
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},
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components: {
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vSelect,
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},
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data() {
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return {
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timezones: [],
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limit: 10,
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search: '',
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observer: null,
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visible: false,
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};
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},
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computed: {
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model: {
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get() {
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return {
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value: this.value,
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label: this.formatTimezone(this.value),
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};
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},
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set(option) {
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if (!option) return;
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this.$emit('onTimezoneChange', option.value);
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},
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},
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filtered() {
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if (!this.timezones || !this.timezones.length) return [];
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return this.timezones.filter(timezone =>
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timezone.label.toLowerCase().includes(this.search.toLowerCase()),
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);
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},
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paginated() {
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return this.filtered.slice(0, this.limit);
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},
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hasNextPage() {
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return this.paginated.length < this.filtered.length;
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},
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},
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methods: {
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inputHandler(value) {
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this.$emit('onTimezoneChange', value);
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},
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async onOpen() {
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if (this.hasNextPage) {
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await this.$nextTick();
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this.observer.observe(this.$refs.load);
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}
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this.visible = true;
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},
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onClose() {
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this.visible = false;
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this.observer.disconnect();
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},
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async infiniteScroll([{ isIntersecting, target }]) {
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if (isIntersecting) {
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const ul = target.offsetParent;
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const scrollTop = target.offsetParent.scrollTop;
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this.limit += 10;
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await this.$nextTick();
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ul.scrollTop = scrollTop;
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}
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},
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setTimezones() {
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if (this.timezones.length > 1) return;
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moment.tz.names().map(timezoneName => {
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if (this.timezones.some(t => t.value === timezoneName)) {
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return;
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}
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//Asia/Kolkata
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if (timezoneName === 'Asia/Calcutta') {
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timezoneName = 'Asia/Kolkata';
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}
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if (typeof timezoneName !== 'string') return;
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this.timezones.push({
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value: timezoneName,
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label: this.formatTimezone(timezoneName),
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});
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});
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},
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formatTimezone(timezone) {
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return `${timezone} (GMT${moment.tz(timezone).format('Z')})`;
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},
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},
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created() {
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this.timezones.push({
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value: this.value,
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label: this.formatTimezone(this.value),
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});
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this.setTimezones();
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},
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mounted() {
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this.observer = new IntersectionObserver(this.infiniteScroll);
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},
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};
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</script>
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<style lang="scss" scoped>
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.timezone-select {
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min-width: 240px;
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&::v-deep {
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.vs__dropdown-menu {
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width: auto;
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min-width: 100%;
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}
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}
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}
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</style>
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