420 lines
12 KiB
Vue
420 lines
12 KiB
Vue
<template>
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<DocSectionText v-bind="$attrs">
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<p>
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Lazy loading is useful when dealing with huge datasets, in this example nodes are dynamically loaded on demand using <i>loading</i> property and <i>node-expand</i> method. Default value of <i>loadingMode</i> is <i>mask</i> and also
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<i>icon</i> is available.
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</p>
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</DocSectionText>
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<div class="card flex flex-wrap p-fluid gap-4">
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<div class="flex-auto md:flex md:justify-start md:items-center flex-col">
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<label class="font-bold block mb-2">Mask Mode</label>
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<Tree :value="nodes" @node-expand="onNodeExpand" :loading="loading" class="w-full md:w-[30rem]"></Tree>
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</div>
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<div class="flex-auto md:flex md:justify-start md:items-center flex-col">
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<label class="font-bold block mb-2">Icon Mode</label>
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<Tree :value="nodes2" @node-expand="onNodeExpand2" loadingMode="icon" class="w-full md:w-[30rem]"></Tree>
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</div>
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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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nodes: null,
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nodes2: null,
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loading: false,
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code: {
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basic: `
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<Tree :value="nodes" @node-expand="onNodeExpand" :loading="loading" class="w-full md:w-[30rem]"></Tree>
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<Tree :value="nodes2" @node-expand="onNodeExpand2" loadingMode="icon" class="w-full md:w-[30rem]"></Tree>
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`,
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options: `
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<template>
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<div class="card flex flex-wrap p-fluid gap-4">
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<div class="flex-auto md:flex md:justify-start md:items-center flex-col">
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<label class="font-bold block mb-2">Mask Mode</label>
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<Tree :value="nodes" @node-expand="onNodeExpand" :loading="loading" class="w-full md:w-[30rem]"></Tree>
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</div>
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<div class="flex-auto md:flex md:justify-start md:items-center flex-col">
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<label class="font-bold block mb-2">Icon Mode</label>
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<Tree :value="nodes2" @node-expand="onNodeExpand2" loadingMode="icon" class="w-full md:w-[30rem]"></Tree>
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</div>
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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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nodes: null,
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nodes2: null,
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loading: false
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};
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},
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mounted() {
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this.loading = true;
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this.nodes2 = this.initiateNodes2();
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setTimeout(() => {
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this.nodes = this.initiateNodes();
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this.loading = false;
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this.nodes2.map((node) => (node.loading = false));
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}, 2000);
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},
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methods: {
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onNodeExpand(node) {
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if (!node.children) {
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this.loading = true;
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setTimeout(() => {
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let _node = { ...node };
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_node.children = [];
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for (let i = 0; i < 3; i++) {
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_node.children.push({
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key: node.key + '-' + i,
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label: 'Lazy ' + node.label + '-' + i
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});
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}
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let _nodes = { ...this.nodes };
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_nodes[parseInt(node.key, 10)] = _node;
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this.nodes = _nodes;
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this.loading = false;
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}, 500);
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}
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},
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onNodeExpand2(node) {
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if (!node.children) {
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node.loading = true;
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setTimeout(() => {
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let _node = { ...node };
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_node.children = [];
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for (let i = 0; i < 3; i++) {
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_node.children.push({
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key: node.key + '-' + i,
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label: 'Lazy ' + node.label + '-' + i
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});
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}
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let _nodes = { ...this.nodes2 };
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_nodes[parseInt(node.key, 10)] = { ..._node, loading: false };
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this.nodes2 = _nodes;
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}, 500);
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}
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},
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initiateNodes() {
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return [
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{
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key: '0',
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label: 'Node 0',
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leaf: false
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},
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{
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key: '1',
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label: 'Node 1',
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leaf: false
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},
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{
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key: '2',
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label: 'Node 2',
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leaf: false
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}
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];
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},
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initiateNodes2() {
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return [
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{
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key: '0',
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label: 'Node 0',
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leaf: false,
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loading: true
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},
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{
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key: '1',
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label: 'Node 1',
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leaf: false,
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loading: true
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},
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{
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key: '2',
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label: 'Node 2',
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leaf: false,
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loading: true
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}
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];
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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 flex-wrap p-fluid gap-4">
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<div class="flex-auto md:flex md:justify-start md:items-center flex-col">
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<label class="font-bold block mb-2">Mask Mode</label>
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<Tree :value="nodes" @node-expand="onNodeExpand" :loading="loading" class="w-full md:w-[30rem]"></Tree>
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</div>
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<div class="flex-auto md:flex md:justify-start md:items-center flex-col">
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<label class="font-bold block mb-2">Icon Mode</label>
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<Tree :value="nodes2" @node-expand="onNodeExpand2" loadingMode="icon" class="w-full md:w-[30rem]"></Tree>
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</div>
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</div>
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</template>
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<script setup>
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import { ref, onMounted } from 'vue';
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const nodes = ref(null);
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const nodes2 = ref(null);
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const loading = ref(false);
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onMounted(() => {
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loading.value = true;
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nodes2.value = initiateNodes2();
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setTimeout(() => {
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nodes.value = initiateNodes();
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loading.value = false;
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nodes2.value.map((node) => (node.loading = false));
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}, 2000);
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});
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const onNodeExpand = (node) => {
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if (!node.children) {
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loading.value = true;
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setTimeout(() => {
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let _node = { ...node };
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_node.children = [];
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for (let i = 0; i < 3; i++) {
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_node.children.push({
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key: node.key + '-' + i,
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label: 'Lazy ' + node.label + '-' + i
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});
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}
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let _nodes = { ...nodes.value };
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_nodes[parseInt(node.key, 10)] = _node;
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nodes.value = _nodes;
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loading.value = false;
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}, 500);
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}
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};
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const onNodeExpand2 = (node) => {
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if (!node.children) {
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node.loading = true;
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setTimeout(() => {
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let _node = { ...node };
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_node.children = [];
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for (let i = 0; i < 3; i++) {
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_node.children.push({
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key: node.key + '-' + i,
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label: 'Lazy ' + node.label + '-' + i
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});
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}
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let _nodes = { ...nodes2.value };
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_nodes[parseInt(node.key, 10)] = { ..._node, loading: false };
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nodes2.value = _nodes;
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}, 500);
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}
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};
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const initiateNodes = () => {
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return [
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{
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key: '0',
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label: 'Node 0',
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leaf: false
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},
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{
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key: '1',
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label: 'Node 1',
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leaf: false
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},
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{
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key: '2',
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label: 'Node 2',
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leaf: false
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}
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];
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};
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const initiateNodes2 = () => {
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return [
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{
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key: '0',
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label: 'Node 0',
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leaf: false,
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loading: true
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},
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{
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key: '1',
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label: 'Node 1',
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leaf: false,
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loading: true
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},
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{
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key: '2',
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label: 'Node 2',
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leaf: false,
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loading: true
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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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data: `
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{
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key: '0',
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label: 'Documents',
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data: 'Documents Folder',
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icon: 'pi pi-fw pi-inbox',
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children: [
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{
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key: '0-0',
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label: 'Work',
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data: 'Work Folder',
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icon: 'pi pi-fw pi-cog',
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children: [
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{ key: '0-0-0', label: 'Expenses.doc', icon: 'pi pi-fw pi-file', data: 'Expenses Document' },
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{ key: '0-0-1', label: 'Resume.doc', icon: 'pi pi-fw pi-file', data: 'Resume Document' }
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]
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},
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{
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key: '0-1',
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label: 'Home',
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data: 'Home Folder',
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icon: 'pi pi-fw pi-home',
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children: [{ key: '0-1-0', label: 'Invoices.txt', icon: 'pi pi-fw pi-file', data: 'Invoices for this month' }]
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}
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]
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},
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...`
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}
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};
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},
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mounted() {
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this.loading = true;
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this.nodes2 = this.initiateNodes2();
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setTimeout(() => {
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this.nodes = this.initiateNodes();
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this.loading = false;
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this.nodes2.map((node) => (node.loading = false));
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}, 2000);
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},
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methods: {
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onNodeExpand(node) {
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if (!node.children) {
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this.loading = true;
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setTimeout(() => {
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let _node = { ...node };
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_node.children = [];
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for (let i = 0; i < 3; i++) {
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_node.children.push({
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key: node.key + '-' + i,
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label: 'Lazy ' + node.label + '-' + i
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});
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}
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let _nodes = { ...this.nodes };
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_nodes[parseInt(node.key, 10)] = _node;
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this.nodes = _nodes;
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this.loading = false;
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}, 500);
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}
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},
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onNodeExpand2(node) {
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if (!node.children) {
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node.loading = true;
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setTimeout(() => {
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let _node = { ...node };
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_node.children = [];
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for (let i = 0; i < 3; i++) {
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_node.children.push({
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key: node.key + '-' + i,
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label: 'Lazy ' + node.label + '-' + i
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});
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}
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let _nodes = { ...this.nodes2 };
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_nodes[parseInt(node.key, 10)] = { ..._node, loading: false };
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this.nodes2 = _nodes;
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}, 500);
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}
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},
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initiateNodes() {
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return [
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{
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key: '0',
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label: 'Node 0',
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leaf: false
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},
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{
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key: '1',
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label: 'Node 1',
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leaf: false
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},
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{
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key: '2',
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label: 'Node 2',
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leaf: false
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}
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];
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},
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initiateNodes2() {
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return [
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{
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key: '0',
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label: 'Node 0',
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leaf: false,
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loading: true
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},
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{
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key: '1',
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label: 'Node 1',
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leaf: false,
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loading: true
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},
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{
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key: '2',
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label: 'Node 2',
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leaf: false,
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loading: true
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}
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];
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}
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}
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};
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</script>
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