Vue通用下拉树组件@riophae/vue

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Vue通用下拉树组件@riophae/vue

#Vue通用下拉树组件@riophae/vue| 来源: 网络整理| 查看: 265

这个是在若依框架无意中发现的一个下拉树通用组件。@riophae/vue-treeselect 是一个基于 Vue.js 的树形选择器组件,可以用于选择树形结构的数据。它支持多选、搜索、异步加载等功能,可以自定义选项的样式和模板。该组件易于使用和扩展,适用于各种类型的项目。

npm: www.npmjs.com/package/@ri…

首先安装: 

使用自己习惯使用的包管理器安装就可以了

pnpm add @riophae/vue-treeselect 引入注册: 

import Treeselect from '@riophae/vue-treeselect' import '@riophae/vue-treeselect/dist/vue-treeselect.css'

export default { components: { Treeselect } }

基本使用:

里面可配置的属性很多,下面是在源码中看到的: 

部分注释百度翻译成中文了,但太多了,懒得挨个翻译了,直接看也大概知道啥意思 

props: { /**

即使有禁用的选定节点,是否允许重置值 */ allowClearingDisabled: { type: Boolean, default: false, },

/**

选择/取消选择祖先节点时,是否应选择/取消选中其禁用的后代 和 allowClearingDisabled 一起使用 */ allowSelectingDisabledDescendants: { type: Boolean, default: false, },

/**

菜单是否应始终打开 */ alwaysOpen: { type: Boolean, default: false, },

/**

是否将菜单加到body上 */ appendToBody: { type: Boolean, default: false, },

/**

是否启用异步搜索模式 */ async: { type: Boolean, default: false, },

/**

是否自动将组件集中在装载上? */ autoFocus: { type: Boolean, default: false, },

/**

装载时自动加载根选项。当设置为“false”时,打开菜单时将加载根选项。 */ autoLoadRootOptions: { type: Boolean, default: true, },

/**

当用户取消选择一个节点时,会自动取消选择其祖先。仅适用于平面模式。 */ autoDeselectAncestors: { type: Boolean, default: false, },

/**

当用户取消选择节点时,会自动取消选择其子节点。仅适用于平面模式。 */ autoDeselectDescendants: { type: Boolean, default: false, },

/**

当用户选择一个节点时,会自动选择其祖先。仅适用于平面模式。 */ autoSelectAncestors: { type: Boolean, default: false, },

/**

当用户选择一个节点时,会自动选择其子节点。仅适用于平面模式。 */ autoSelectDescendants: { type: Boolean, default: false, },

/**

如果没有文本输入,按退格键是否删除最后一项。 */ backspaceRemoves: { type: Boolean, default: true, },

/**

在清除所有输入字段之前进行处理的函数。 返回“false”以防止清除值 @type {function(): (boolean|Promise)} */ beforeClearAll: { type: Function, default: constant(true), },

/**

在叶节点之前显示分支节点? */ branchNodesFirst: { type: Boolean, default: false, },

/**

是否应该缓存每个搜索请求的结果? */ cacheOptions: { type: Boolean, default: true, },

/**

是否显示重置值的“×”按钮? */ clearable: { type: Boolean, default: true, },

/**

清楚文本,multiple为true时 */ clearAllText: { type: String, default: 'Clear all', },

/**

选择后是否清除搜索输入。 仅当“multiple”为“true”时使用。 对于单选模式,无论道具值如何,它总是**在选择一个选项后清除输入。 */ clearOnSelect: { type: Boolean, default: false, },

/**

“×”按钮的标题。 */ clearValueText: { type: String, default: 'Clear value', },

/**

选择选项后是否关闭菜单? 仅当“multiple”为“true”时使用。 */ closeOnSelect: { type: Boolean, default: true, },

/**

加载时应自动展开多少级别的分支节点。 设置Infinity以使所有分支节点在默认情况下展开。 */ defaultExpandLevel: { type: Number, default: 0, },

/**

在用户开始搜索之前要显示的默认选项集。用于异步搜索模式。 当设置为“true”时,将自动加载作为空字符串的搜索查询结果。 @type {boolean|node[]} */ defaultOptions: { default: false, },

/**

如果没有文本输入,按delete键是否删除最后一项。 */ deleteRemoves: { type: Boolean, default: true, },

/**

用于连接隐藏字段值的多个值的分隔符。 */ delimiter: { type: String, default: ',', },

/**

仅显示与搜索值直接匹配的节点,不包括其祖先。 @type {Object} */ flattenSearchResults: { type: Boolean, default: false, },

/**

是否阻止选择分支节点? */ disableBranchNodes: { type: Boolean, default: false, },

/**

禁用控制? */ disabled: { type: Boolean, default: false, },

/**

是否禁用模糊匹配功能? */ disableFuzzyMatching: { type: Boolean, default: false, },

/** *是否启用平面模式。非平面模式(默认)是指:

每当检查分支节点时,它的所有子节点也将被检查 每当一个分支节点检查了所有子节点时,该分支节点本身也会被检查 设置“true”以禁用此机制 */ flat: { type: Boolean, default: false, },

/**

将以所有事件作为最后一个参数进行传递。 有助于识别事件的起源。 */ instanceId: { // Add two trailing ""todistinguishfromexplictlyspecifiedids.default:()=>‘" to distinguish from explictly specified ids. default: () => `"todistinguishfromexplictlyspecifiedids.default:()=>‘{instanceId++}$$`, type: [String, Number], },

/**

Joins multiple values into a single form field with the delimiter (legacy mode). 使用“分隔符”将多个值合并到一个表单字段中(传统模式)。 */ joinValues: { type: Boolean, default: false, },

/**

限制所选选项的显示。 其余部分将隐藏在limitText字符串中。 */ limit: { type: Number, default: Infinity, },

/**

Function that processes the message shown when selected elements pass the defined limit. @type {function(number): string} */ limitText: { type: Function, default: function limitTextDefault(count) { // eslint-disable-line func-name-matching return and ${count} more }, },

/**

Text displayed when loading options. */ loadingText: { type: String, default: 'Loading...', },

/**

Used for dynamically loading options. @type {function({action: string, callback: (function((Error|string)=): void), parentNode: node=, instanceId}): void} */ loadOptions: { type: Function, },

/**

Which node properties to filter on. */ matchKeys: { type: Array, default: constant(['label']), },

/**

Sets maxHeight style value of the menu. */ maxHeight: { type: Number, default: 300, },

/**

Set true to allow selecting multiple options (a.k.a., multi-select mode). */ multiple: { type: Boolean, default: false, },

/**

Generates a hidden tag with this field name for html forms. */ name: { type: String, },

/**

Text displayed when a branch node has no children. */ noChildrenText: { type: String, default: 'No sub-options.', },

/**

Text displayed when there are no available options. */ noOptionsText: { type: String, default: 'No options available.', },

/**

Text displayed when there are no matching search results. */ noResultsText: { type: String, default: 'No results found...', },

/**

Used for normalizing source data. @type {function(node, instanceId): node} */ normalizer: { type: Function, default: identity, },

/**

By default (auto), the menu will open below the control. If there is not enough space, vue-treeselect will automatically flip the menu. You can use one of other four options to force the menu to be always opened to specified direction. Acceptable values: "auto" "below" "bottom" "above" "top" */ openDirection: { type: String, default: 'auto', validator(value) { const acceptableValues = ['auto', 'top', 'bottom', 'above', 'below'] return includes(acceptableValues, value) }, },

/**

Whether to automatically open the menu when the control is clicked. */ openOnClick: { type: Boolean, default: true, },

/**

Whether to automatically open the menu when the control is focused. */ openOnFocus: { type: Boolean, default: false, },

/**

Array of available options. @type {node[]} */ options: { type: Array, },

/**

Field placeholder, displayed when there's no value. */ placeholder: { type: String, default: 'Select...', },

/**

Applies HTML5 required attribute when needed. */ required: { type: Boolean, default: false, },

/**

Text displayed asking user whether to retry loading children options. */ retryText: { type: String, default: 'Retry?', },

/**

Title for the retry button. */ retryTitle: { type: String, default: 'Click to retry', },

/**

Enable searching feature? */ searchable: { type: Boolean, default: true, },

/**

Search in ancestor nodes too. */ searchNested: { type: Boolean, default: false, },

/**

Text tip to prompt for async search. */ searchPromptText: { type: String, default: 'Type to search...', },

/**

Whether to show a children count next to the label of each branch node. */ showCount: { type: Boolean, default: false, },

/**

Used in conjunction with showCount to specify which type of count number should be displayed. Acceptable values: "ALL_CHILDREN" "ALL_DESCENDANTS" "LEAF_CHILDREN" "LEAF_DESCENDANTS" */ showCountOf: { type: String, default: ALL_CHILDREN, validator(value) { const acceptableValues = [ALL_CHILDREN, ALL_DESCENDANTS, LEAF_CHILDREN, LEAF_DESCENDANTS] return includes(acceptableValues, value) }, },

/**

Whether to show children count when searching. Fallbacks to the value of showCount when not specified. @type {boolean} */ showCountOnSearch: null,

/**

In which order the selected options should be displayed in trigger & sorted in value array. Used for multi-select mode only. Acceptable values: "ORDER_SELECTED" "LEVEL" "INDEX" */ sortValueBy: { type: String, default: ORDER_SELECTED, validator(value) { const acceptableValues = [ORDER_SELECTED, LEVEL, INDEX] return includes(acceptableValues, value) }, },

/**

Tab index of the control. */ tabIndex: { type: Number, default: 0, },

/**

The value of the control. Should be id or node object for single-select mode, or an array of id or node object for multi-select mode. Its format depends on the valueFormat prop. For most cases, just use v-model instead. @type {?Array} */ value: null,

/**

Which kind of nodes should be included in the value array in multi-select mode. Acceptable values: "ALL" - Any node that is checked will be included in the value array "BRANCH_PRIORITY" (default) - If a branch node is checked, all its descendants will be excluded in the value array "LEAF_PRIORITY" - If a branch node is checked, this node itself and its branch descendants will be excluded from the value array but its leaf descendants will be included "ALL_WITH_INDETERMINATE" - Any node that is checked will be included in the value array, plus indeterminate nodes */ valueConsistsOf: { type: String, default: BRANCH_PRIORITY, validator(value) { const acceptableValues = [ALL, BRANCH_PRIORITY, LEAF_PRIORITY, ALL_WITH_INDETERMINATE] return includes(acceptableValues, value) }, },

/**

Format of value prop. Note that, when set to "object", only id & label properties are required in each node object in value prop. Acceptable values: "id" "object" */ valueFormat: { type: String, default: 'id', },

/**

z-index of the menu. */ zIndex: { type: [Number, String], default: 999, } } 然后我简单看了一下好像一共向外暴露了6个方法如下:

@input // // 选中触发(第一次回显的时候会触发,清除值的时候会触发, value值为undefined) input事件用于v-model双向绑定组件更新父组件值 @select // 选中触发(清除值的时候不会触发) @deselect // 移除选项时触发 当设置multiple为true时生效 raw为当前移除的对象 @search-change // 搜索触发(输入框输入 值改变时) @open // 展开时触发 @close // 关闭时触发

下面是我测试的一个例子,一般的需求应该足够了

字体样式简单调了一下 

.main { width: 100%; height: 100%; padding: 60px 0 0 200px; } .main .tree { width: 240px; height: 40px; }

::v-deep .vue-treeselect__label { color: #606266; } 测试数据: 

export default [ { "title": "系统管理", "parentId": 0, "id": 1, "children": [ { "title": "菜单管理", "parentId": 1, "id": 11, "children": [ { "title": "菜单新增", "parentId": 11, "id": 111 }, { "title": "菜单编辑", "parentId": 11, "id": 112 }, { "title": "菜单删除", "parentId": 11, "id": 113 } ] }, { "title": "角色管理", "parentId": 1, "id": 22, "children": [ { "title": "角色编辑", "parentId": 22, "id": 222 }, { "title": "角色新增", "parentId": 22, "id": 221 }, { "title": "角色删除", "parentId": 22, "id": 223 } ] } ] }, { "title": "用户管理", "parentId": 0, "id": 33, "children": [ { "title": "用户新增", "parentId": 33, "id": 331 }, { "title": "用户编辑", "parentId": 33, "id": 332 }, { "title": "用户删除", "parentId": 33, "id": 333 } ] } ]



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