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639
components/ly-tree/ly-tree.vue
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639
components/ly-tree/ly-tree.vue
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<template>
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<view>
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<template v-if="showLoading">
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<view class="ly-loader ly-flex-center">
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<view class="ly-loader-inner">{{$t('component.drawer.loadingText')}}</view>
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</view>
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</template>
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<template v-else>
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<JnpfEmpty v-if="isEmpty || !visible"></JnpfEmpty>
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<view :key="updateKey" class="ly-tree" :class="{'is-empty': isEmpty || !visible}" role="tree"
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name="LyTreeExpand" v-if="show">
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<ly-tree-node v-for="nodeId in childNodesId" :nodeId="nodeId" :render-after-expand="renderAfterExpand"
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:show-checkbox="showCheckbox" :show-radio="showRadio" :check-only-leaf="checkOnlyLeaf"
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:key="getNodeKey(nodeId)" :indent="indent" :icon-class="iconClass">
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</ly-tree-node>
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</view>
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</template>
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</view>
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</template>
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<script>
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import TreeStore from './model/tree-store.js';
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import {
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getNodeKey
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} from './tool/util.js';
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import LyTreeNode from './ly-tree-node.vue';
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export default {
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name: 'LyTree',
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componentName: 'LyTree',
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components: {
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LyTreeNode
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},
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data() {
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return {
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updateKey: new Date().getTime(), // 数据更新的时候，重新渲染树
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elId: `ly_${Math.ceil(Math.random() * 10e5).toString(36)}`,
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visible: true,
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store: {
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ready: false
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},
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currentNode: null,
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childNodesId: [],
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mathKey: 1,
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show: true
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};
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},
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provide() {
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return {
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tree: this
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}
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},
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props: {
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// 展示数据
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treeData: Array,
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// 自主控制loading加载，避免数据还没获取到的空档出现“暂无数据”字样
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ready: {
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type: Boolean,
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default: true
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},
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// 内容为空的时候展示的文本
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emptyText: {
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type: String,
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default: '暂无数据'
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},
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// 是否在第一次展开某个树节点后才渲染其子节点
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renderAfterExpand: {
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type: Boolean,
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default: true
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},
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// 每个树节点用来作为唯一标识的属性，整棵树应该是唯一的
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nodeKey: String,
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// 在显示复选框的情况下，是否严格的遵循父子不互相关联的做法，默认为 false
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checkStrictly: Boolean,
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// 是否默认展开所有节点
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defaultExpandAll: {
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type: Boolean,
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default: true
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},
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// 切换全部展开、全部折叠
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toggleExpendAll: Boolean,
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// 是否在点击节点的时候展开或者收缩节点， 默认值为 true，如果为 false，则只有点箭头图标的时候才会展开或者收缩节点
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expandOnClickNode: {
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type: Boolean,
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default: true
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},
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// 选中的时候展开节点
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expandOnCheckNode: {
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type: Boolean,
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default: true
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},
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// 是否在点击节点的时候选中节点，默认值为 false，即只有在点击复选框时才会选中节点
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checkOnClickNode: Boolean,
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checkDescendants: {
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type: Boolean,
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default: false
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},
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// 展开子节点的时候是否自动展开父节点
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autoExpandParent: {
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type: Boolean,
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default: true
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},
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// 默认勾选的节点的 key 的数组
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defaultCheckedKeys: Array,
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// 默认展开的节点的 key 的数组
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defaultExpandedKeys: Array,
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// 是否展开当前节点的父节点
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expandCurrentNodeParent: Boolean,
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// 当前选中的节点
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currentNodeKey: [String, Number],
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// 是否最后一层叶子节点才显示单选/多选框
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checkOnlyLeaf: {
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type: Boolean,
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default: false
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},
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// 节点是否可被选择
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showCheckbox: {
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type: Boolean,
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default: false
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},
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// 节点单选
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showRadio: {
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type: Boolean,
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default: false
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},
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// 配置选项
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props: {
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type: [Object, Function],
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default () {
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return {
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children: 'children', // 指定子树为节点对象的某个属性值
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label: 'label', // 指定节点标签为节点对象的某个属性值
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disabled: 'disabled' // 指定节点选择框是否禁用为节点对象的某个属性值
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};
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}
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},
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// 是否懒加载子节点，需与 load 方法结合使用
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lazy: {
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type: Boolean,
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default: false
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},
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// 是否高亮当前选中节点，默认值是 false
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highlightCurrent: Boolean,
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// 加载子树数据的方法，仅当 lazy 属性为true 时生效
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load: Function,
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// 对树节点进行筛选时执行的方法，返回 true 表示这个节点可以显示，返回 false 则表示这个节点会被隐藏
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filterNodeMethod: Function,
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// 搜索时是否展示匹配项的所有子节点
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childVisibleForFilterNode: {
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type: Boolean,
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default: false
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},
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// 是否每次只打开一个同级树节点展开
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accordion: Boolean,
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// 相邻级节点间的水平缩进，单位为像素
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indent: {
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type: Number,
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default: 18
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},
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// 自定义树节点的展开图标
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iconClass: String,
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// 是否显示节点图标，如果配置为true,需要配置props中对应的图标属性名称
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showNodeIcon: {
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type: Boolean,
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default: false
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},
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// 当节点图标显示出错时，显示的默认图标
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defaultNodeIcon: {
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type: String,
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default: ''
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},
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// 如果数据量较大，建议不要在node节点中添加parent属性，会造成性能损耗
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isInjectParentInNode: {
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type: Boolean,
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default: false
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}
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},
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computed: {
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isEmpty() {
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this.$nextTick(() => {
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if (this.store.root) {
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const childNodes = this.store.root.getChildNodes(this.childNodesId);
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return !childNodes || childNodes.length === 0 || childNodes.every(({
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visible
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}) => !visible);
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}
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return true;
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})
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},
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showLoading() {
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//不要删除
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const a = this.mathKey
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return !(this.store.getReady() && this.ready);
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}
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},
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watch: {
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toggleExpendAll(newVal) {
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this.store.toggleExpendAll(newVal);
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},
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defaultCheckedKeys(newVal) {
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this.store.setDefaultCheckedKey(newVal);
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},
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defaultExpandedKeys(newVal) {
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this.store.defaultExpandedKeys = newVal;
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this.store.setDefaultExpandedKeys(newVal);
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},
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checkStrictly(newVal) {
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this.store.checkStrictly = newVal || this.checkOnlyLeaf;
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},
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'store.root.childNodesId'(newVal) {
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this.childNodesId = newVal;
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},
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'store.root.visible'(newVal) {
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this.visible = newVal;
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},
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childNodesId() {
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this.$nextTick(() => {
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this.$emit('ly-tree-render-completed');
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});
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},
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treeData: {
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handler(newVal) {
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this.updateKey = new Date().getTime();
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this.store.setData(newVal);
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},
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deep: true
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}
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},
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methods: {
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/*
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* @description 对树节点进行筛选操作
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* @method filter
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* @param {all} value 在 filter-node-method 中作为第一个参数
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* @param {Object} data 搜索指定节点的节点数据，不传代表搜索所有节点，假如要搜索A节点下面的数据，那么nodeData代表treeData中A节点的数据
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*/
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filter(value, data) {
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if (!this.filterNodeMethod) throw new Error('[Tree] filterNodeMethod is required when filter');
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this.store.filter(value, data);
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this.handleUpdateKey()
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},
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handleUpdateKey() {
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// #ifndef MP
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this.updateKey = new Date().getTime();
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// #endif
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},
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/*
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* @description 获取节点的唯一标识符
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* @method getNodeKey
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* @param {String, Number} nodeId
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* @return {String, Number} 匹配到的数据中的某一项数据
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*/
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getNodeKey(nodeId) {
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let node = this.store.root.getChildNodes([nodeId])[0];
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return getNodeKey(this.nodeKey, node.data);
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},
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/*
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* @description 获取节点路径
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* @method getNodePath
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* @param {Object} data 节点数据
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* @return {Array} 路径数组
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*/
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getNodePath(data) {
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return this.store.getNodePath(data);
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},
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/*
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* @description 若节点可被选择（即 show-checkbox 为 true），则返回目前被选中的节点所组成的数组
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* @method getCheckedNodes
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* @param {Boolean} leafOnly 是否只是叶子节点，默认false
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* @param {Boolean} includeHalfChecked 是否包含半选节点，默认false
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* @return {Array} 目前被选中的节点所组成的数组
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*/
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getCheckedNodes(leafOnly, includeHalfChecked) {
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return this.store.getCheckedNodes(leafOnly, includeHalfChecked);
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},
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/*
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* @description 若节点可被选择（即 show-checkbox 为 true），则返回目前被选中的节点的 key 所组成的数组
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* @method getCheckedKeys
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* @param {Boolean} leafOnly 是否只是叶子节点，默认false,若为 true 则仅返回被选中的叶子节点的 keys
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* @param {Boolean} includeHalfChecked 是否返回indeterminate为true的节点，默认false
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* @return {Array} 目前被选中的节点所组成的数组
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*/
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getCheckedKeys(leafOnly, includeHalfChecked) {
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return this.store.getCheckedKeys(leafOnly, includeHalfChecked);
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},
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/*
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* @description 获取当前被选中节点的 data，若没有节点被选中则返回 null
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* @method getCurrentNode
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* @return {Object} 当前被选中节点的 data，若没有节点被选中则返回 null
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*/
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getCurrentNode() {
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const currentNode = this.store.getCurrentNode();
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return currentNode ? currentNode.data : null;
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},
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/*
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* @description 获取当前被选中节点的 key，若没有节点被选中则返回 null
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* @method getCurrentKey
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* @return {all} 当前被选中节点的 key， 若没有节点被选中则返回 null
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*/
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getCurrentKey() {
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const currentNode = this.getCurrentNode();
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return currentNode ? currentNode[this.nodeKey] : null;
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},
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/*
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* @description 设置全选/取消全选
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* @method setCheckAll
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* @param {Boolean} isCheckAll 选中状态,默认为true
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*/
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setCheckAll(isCheckAll = true) {
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if (this.showRadio) throw new Error(
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'You set the "show-radio" property, so you cannot select all nodes');
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if (!this.showCheckbox) console.warn(
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'You have not set the property "show-checkbox". Please check your settings');
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this.store.setCheckAll(isCheckAll);
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},
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/*
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* @description 设置目前勾选的节点
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* @method setCheckedNodes
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* @param {Array} nodes 接收勾选节点数据的数组
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* @param {Boolean} leafOnly 是否只是叶子节点, 若为 true 则仅设置叶子节点的选中状态，默认值为 false
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*/
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setCheckedNodes(nodes, leafOnly) {
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this.store.setCheckedNodes(nodes, leafOnly);
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},
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/*
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* @description 通过 keys 设置目前勾选的节点
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* @method setCheckedKeys
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* @param {Array} keys 勾选节点的 key 的数组
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* @param {Boolean} leafOnly 是否只是叶子节点, 若为 true 则仅设置叶子节点的选中状态，默认值为 false
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*/
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setCheckedKeys(keys, leafOnly) {
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if (!this.nodeKey) throw new Error('[Tree] nodeKey is required in setCheckedKeys');
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this.store.setCheckedKeys(keys, leafOnly);
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this.handleUpdateKey()
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},
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/*
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* @description 通过 key / data 设置某个节点的勾选状态
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* @method setChecked
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* @param {all} data 勾选节点的 key 或者 data
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* @param {Boolean} checked 节点是否选中
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* @param {Boolean} deep 是否设置子节点 ，默认为 false
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*/
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setChecked(data, checked, deep) {
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this.store.setChecked(data, checked, deep);
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},
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/*
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* @description 若节点可被选择（即 show-checkbox 为 true），则返回目前半选中的节点所组成的数组
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* @method getHalfCheckedNodes
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* @return {Array} 目前半选中的节点所组成的数组
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||||
*/
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getHalfCheckedNodes() {
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return this.store.getHalfCheckedNodes();
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},
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||||
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||||
/*
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||||
* @description 若节点可被选择（即 show-checkbox 为 true），则返回目前半选中的节点的 key 所组成的数组
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||||
* @method getHalfCheckedKeys
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* @return {Array} 目前半选中的节点的 key 所组成的数组
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*/
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||||
getHalfCheckedKeys() {
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return this.store.getHalfCheckedKeys();
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||||
},
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||||
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||||
/*
|
||||
* @description 通过 node 设置某个节点的当前选中状态
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||||
* @method setCurrentNode
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* @param {Object} node 待被选节点的 node
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*/
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setCurrentNode(node) {
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if (!this.nodeKey) throw new Error('[Tree] nodeKey is required in setCurrentNode');
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||||
this.store.setUserCurrentNode(node);
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||||
},
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||||
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||||
/*
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||||
* @description 通过 key 设置某个节点的当前选中状态
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||||
* @method setCurrentKey
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||||
* @param {all} key 待被选节点的 key，若为 null 则取消当前高亮的节点
|
||||
*/
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||||
setCurrentKey(key) {
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||||
if (!this.nodeKey) throw new Error('[Tree] nodeKey is required in setCurrentKey');
|
||||
this.store.setCurrentNodeKey(key);
|
||||
},
|
||||
|
||||
/*
|
||||
* @description 根据 data 或者 key 拿到 Tree 组件中的 node
|
||||
* @method getNode
|
||||
* @param {all} data 要获得 node 的 key 或者 data
|
||||
*/
|
||||
getNode(data) {
|
||||
return this.store.getNode(data);
|
||||
},
|
||||
|
||||
/*
|
||||
* @description 删除 Tree 中的一个节点
|
||||
* @method remove
|
||||
* @param {all} data 要删除的节点的 data 或者 node
|
||||
*/
|
||||
remove(data) {
|
||||
this.store.remove(data);
|
||||
},
|
||||
|
||||
/*
|
||||
* @description 为 Tree 中的一个节点追加一个子节点
|
||||
* @method append
|
||||
* @param {Object} data 要追加的子节点的 data
|
||||
* @param {Object} parentNode 子节点的 parent 的 data、key 或者 node
|
||||
*/
|
||||
append(data, parentNode) {
|
||||
this.store.append(data, parentNode);
|
||||
},
|
||||
|
||||
/*
|
||||
* @description 为 Tree 的一个节点的前面增加一个节点
|
||||
* @method insertBefore
|
||||
* @param {Object} data 要增加的节点的 data
|
||||
* @param {all} refNode 要增加的节点的后一个节点的 data、key 或者 node
|
||||
*/
|
||||
insertBefore(data, refNode) {
|
||||
this.store.insertBefore(data, refNode);
|
||||
},
|
||||
|
||||
/*
|
||||
* @description 为 Tree 的一个节点的后面增加一个节点
|
||||
* @method insertAfter
|
||||
* @param {Object} data 要增加的节点的 data
|
||||
* @param {all} refNode 要增加的节点的前一个节点的 data、key 或者 node
|
||||
*/
|
||||
insertAfter(data, refNode) {
|
||||
this.store.insertAfter(data, refNode);
|
||||
},
|
||||
|
||||
/*
|
||||
* @description 通过 keys 设置节点子元素
|
||||
* @method updateKeyChildren
|
||||
* @param {String, Number} key 节点 key
|
||||
* @param {Object} data 节点数据的数组
|
||||
*/
|
||||
updateKeyChildren(key, data) {
|
||||
if (!this.nodeKey) throw new Error('[Tree] nodeKey is required in updateKeyChild');
|
||||
this.store.updateChildren(key, data);
|
||||
}
|
||||
},
|
||||
|
||||
created() {
|
||||
this.isTree = true;
|
||||
|
||||
let props = this.props;
|
||||
if (typeof this.props === 'function') props = this.props();
|
||||
if (typeof props !== 'object') throw new Error('props must be of object type.');
|
||||
|
||||
this.store = new TreeStore({
|
||||
key: this.nodeKey,
|
||||
data: this.treeData,
|
||||
lazy: this.lazy,
|
||||
props: props,
|
||||
load: this.load,
|
||||
showCheckbox: this.showCheckbox,
|
||||
showRadio: this.showRadio,
|
||||
currentNodeKey: this.currentNodeKey,
|
||||
checkStrictly: this.checkStrictly || this.checkOnlyLeaf,
|
||||
checkDescendants: this.checkDescendants,
|
||||
expandOnCheckNode: this.expandOnCheckNode,
|
||||
defaultCheckedKeys: this.defaultCheckedKeys,
|
||||
defaultExpandedKeys: this.defaultExpandedKeys,
|
||||
expandCurrentNodeParent: this.expandCurrentNodeParent,
|
||||
autoExpandParent: this.autoExpandParent,
|
||||
defaultExpandAll: this.defaultExpandAll,
|
||||
filterNodeMethod: this.filterNodeMethod,
|
||||
childVisibleForFilterNode: this.childVisibleForFilterNode,
|
||||
showNodeIcon: this.showNodeIcon,
|
||||
isInjectParentInNode: this.isInjectParentInNode
|
||||
});
|
||||
this.childNodesId = this.store.root.childNodesId;
|
||||
|
||||
uni.$on(`updateKey`, () => {
|
||||
this.handleUpdateKey()
|
||||
this.mathKey++
|
||||
});
|
||||
},
|
||||
|
||||
beforeDestroy() {
|
||||
if (this.accordion) {
|
||||
uni.$off(`${this.elId}-tree-node-expand`)
|
||||
}
|
||||
uni.$off('updateKey')
|
||||
}
|
||||
};
|
||||
</script>
|
||||
|
||||
<style lang="scss" scoped>
|
||||
.notData-box {
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
justify-content: center;
|
||||
align-items: center;
|
||||
margin-top: 200rpx;
|
||||
|
||||
.notData-inner {
|
||||
width: 286rpx;
|
||||
height: 222rpx;
|
||||
align-items: center;
|
||||
|
||||
.iconImg {
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
}
|
||||
}
|
||||
|
||||
.notData-inner-text {
|
||||
color: #909399;
|
||||
}
|
||||
}
|
||||
|
||||
.ly-tree {
|
||||
position: relative;
|
||||
cursor: default;
|
||||
background: #FFF;
|
||||
color: #606266;
|
||||
padding: 30rpx;
|
||||
}
|
||||
|
||||
.ly-tree.is-empty {
|
||||
background: transparent;
|
||||
}
|
||||
|
||||
/* lyEmpty-start */
|
||||
.ly-empty {
|
||||
width: 100%;
|
||||
display: flex;
|
||||
justify-content: center;
|
||||
margin-top: 100rpx;
|
||||
}
|
||||
|
||||
/* lyEmpty-end */
|
||||
|
||||
/* lyLoader-start */
|
||||
.ly-loader {
|
||||
margin-top: 100rpx;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
}
|
||||
|
||||
.ly-loader-inner,
|
||||
.ly-loader-inner:before,
|
||||
.ly-loader-inner:after {
|
||||
background: #efefef;
|
||||
animation: load 1s infinite ease-in-out;
|
||||
width: .5em;
|
||||
height: 1em;
|
||||
}
|
||||
|
||||
.ly-loader-inner:before,
|
||||
.ly-loader-inner:after {
|
||||
position: absolute;
|
||||
top: 0;
|
||||
content: '';
|
||||
}
|
||||
|
||||
.ly-loader-inner:before {
|
||||
left: -1em;
|
||||
}
|
||||
|
||||
.ly-loader-inner {
|
||||
text-indent: -9999em;
|
||||
position: relative;
|
||||
font-size: 22rpx;
|
||||
animation-delay: 0.16s;
|
||||
}
|
||||
|
||||
.ly-loader-inner:after {
|
||||
left: 1em;
|
||||
animation-delay: 0.32s;
|
||||
}
|
||||
|
||||
/* lyLoader-end */
|
||||
|
||||
@keyframes load {
|
||||
|
||||
0%,
|
||||
80%,
|
||||
100% {
|
||||
box-shadow: 0 0 #efefef;
|
||||
height: 1em;
|
||||
}
|
||||
|
||||
40% {
|
||||
box-shadow: 0 -1.5em #efefef;
|
||||
height: 1.5em;
|
||||
}
|
||||
}
|
||||
</style>
|
||||
Reference in New Issue
Block a user