137 lines
4.1 KiB
Vue
137 lines
4.1 KiB
Vue
<template>
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<DocSectionText v-bind="$attrs" />
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<div class="card flex justify-content-center">
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<Dropdown
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v-model="selectedItem"
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:options="items"
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optionLabel="label"
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optionValue="value"
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:virtualScrollerOptions="{ lazy: true, onLazyLoad: onLazyLoad, itemSize: 38, showLoader: true, loading: loading, delay: 250 }"
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placeholder="Select Item"
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class="w-full md:w-14rem"
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/>
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</div>
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<DocSectionCode :code="code" />
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</template>
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<script>
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export default {
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data() {
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return {
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selectedItem: null,
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items: Array.from({ length: 100000 }),
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loading: false,
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code: {
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basic: `
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<Dropdown v-model="selectedItem" :options="items" optionLabel="label" optionValue="value" class="w-full md:w-14rem"
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:virtualScrollerOptions="{ lazy: true, onLazyLoad: onLazyLoad, itemSize: 38, showLoader: true, loading: loading, delay: 250 }" placeholder="Select Item" />
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`,
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options: `
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<template>
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<div class="card flex justify-content-center">
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<Dropdown v-model="selectedItem" :options="items" optionLabel="label" optionValue="value" class="w-full md:w-14rem"
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:virtualScrollerOptions="{ lazy: true, onLazyLoad: onLazyLoad, itemSize: 38, showLoader: true, loading: loading, delay: 250 }" placeholder="Select Item" />
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</div>
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</template>
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<script>
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export default {
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data() {
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return {
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selectedItem: null,
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items: Array.from({ length: 100000 }),
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loading: false
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};
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},
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loadLazyTimeout: null,
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methods: {
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onLazyLoad(event) {
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this.loading = true;
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if (this.loadLazyTimeout) {
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clearTimeout(this.loadLazyTimeout);
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}
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//imitate delay of a backend call
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this.loadLazyTimeout = setTimeout(() => {
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const { first, last } = event;
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const _items = [...this.items];
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for (let i = first; i < last; i++) {
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_items[i] = { label: \`Item #\${i}\`, value: i };
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}
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this.items = _items;
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this.loading = false;
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}, Math.random() * 1000 + 250);
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}
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}
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};
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<\/script>
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`,
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composition: `
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<template>
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<div class="card flex justify-content-center">
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<Dropdown v-model="selectedItem" :options="items" optionLabel="label" optionValue="value" class="w-full md:w-14rem"
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:virtualScrollerOptions="{ lazy: true, onLazyLoad: onLazyLoad, itemSize: 38, showLoader: true, loading: loading, delay: 250 }" placeholder="Select Item" />
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</div>
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</template>
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<script setup>
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import { ref } from "vue";
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const selectedItem = ref();
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const items = ref(Array.from({ length: 100000 }));
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const loading = ref(false);
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const loadLazyTimeout = ref();
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const onLazyLoad = (event) => {
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loading.value = true;
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if (loadLazyTimeout.value) {
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clearTimeout(loadLazyTimeout.value);
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}
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//imitate delay of a backend call
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loadLazyTimeout.value = setTimeout(() => {
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const { first, last } = event;
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const _items = [...items.value];
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for (let i = first; i < last; i++) {
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_items[i] = { label: \`Item #\${i}\`, value: i };
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}
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items.value = _items;
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loading.value = false;
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}, Math.random() * 1000 + 250);
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}
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<\/script>
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`
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}
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};
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},
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loadLazyTimeout: null,
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methods: {
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onLazyLoad(event) {
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this.loading = true;
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if (this.loadLazyTimeout) {
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clearTimeout(this.loadLazyTimeout);
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}
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//imitate delay of a backend call
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this.loadLazyTimeout = setTimeout(() => {
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const { first, last } = event;
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const items = [...this.items];
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for (let i = first; i < last; i++) {
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items[i] = { label: `Item #${i}`, value: i };
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}
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this.items = items;
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this.loading = false;
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}, Math.random() * 1000 + 250);
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}
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}
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};
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</script>
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