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6.6 KiB
6.6 KiB
category | type | title | cover | coverDark |
---|---|---|---|---|
Components | Data Display | Tree | https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*Ag9_Q6ArswEAAAAAAAAAAAAADrJ8AQ/original | https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*1GeUQJPTGUYAAAAAAAAAAAAADrJ8AQ/original |
A hierarchical list structure component.
When To Use
Almost anything can be represented in a tree structure. Examples include directories, organization hierarchies, biological classifications, countries, etc. The Tree
component is a way of representing the hierarchical relationship between these things. You can also expand, collapse, and select a treeNode within a Tree
.
API
Tree props
Property | Description | Type | Default | Version |
---|---|---|---|---|
allowDrop | Whether to allow dropping on the node | ({ dropNode, dropPosition }) => boolean | - | |
autoExpandParent | Whether to automatically expand a parent treeNode | boolean | false | |
blockNode | Whether treeNode fill remaining horizontal space | boolean | false | |
checkable | Adds a Checkbox before the treeNodes |
boolean | false | |
checkedKeys(v-model) | (Controlled) Specifies the keys of the checked treeNodes (PS: When this specifies the key of a treeNode which is also a parent treeNode, all the children treeNodes of will be checked; and vice versa, when it specifies the key of a treeNode which is a child treeNode, its parent treeNode will also be checked. When checkable and checkStrictly is true, its object has checked and halfChecked property. Regardless of whether the child or parent treeNode is checked, they won't impact each other. |
string[] | number[] | {checked: string[] | number[], halfChecked: string[] | number[]} | [] | |
checkStrictly | Check treeNode precisely; parent treeNode and children treeNodes are not associated | boolean | false | |
defaultExpandAll | Whether to expand all treeNodes by default | boolean | false | |
disabled | whether disabled the tree | bool | false | |
draggable | Specifies whether this Tree is draggable (IE > 8) | boolean | false | |
expandedKeys(v-model) | (Controlled) Specifies the keys of the expanded treeNodes | string[] | number[] | [] | |
fieldNames | Replace the title,key and children fields in treeNode with the corresponding fields in treeData | object | { children:'children', title:'title', key:'key' } | 3.0.0 |
filterTreeNode | Defines a function to filter (highlight) treeNodes. When the function returns true , the corresponding treeNode will be highlighted |
function(node) | - | |
height | Config virtual scroll height. Will not support horizontal scroll when enable this | number | - | |
loadData | Load data asynchronously | function(node) | - | |
loadedKeys | (Controlled) Set loaded tree nodes. Need work with loadData |
string[] | number[] | [] | |
multiple | Allows selecting multiple treeNodes | boolean | false | |
selectable | whether can be selected | boolean | true | |
selectedKeys(v-model) | (Controlled) Specifies the keys of the selected treeNodes | string[] | number[] | - | |
showIcon | Shows the icon before a TreeNode's title. There is no default style; you must set a custom style for it if set to true |
boolean | false | |
showLine | Shows a connecting line | boolean | {showLeafIcon: boolean}(3.0+) | false | |
switcherIcon | customize collapse/expand icon of tree node | v-slot:switcherIcon="{active, checked, expanded, loading, selected, halfChecked, title, key, children, dataRef, data, defaultIcon, switcherCls}" | - | |
title | custom title | slot | 2.0.0 | |
treeData | treeNode of tree, please use treeNodes before v1.1.4 |
TreeNode[] | - | |
virtual | Disable virtual scroll when set to false | boolean | true | 3.0 |
Events
Events Name | Description | Arguments |
---|---|---|
check | Callback function for when the onCheck event occurs | function(checkedKeys, e:{checked: bool, checkedNodes, node, event}) |
dragend | Callback function for when the onDragEnd event occurs | function({event, node}) |
dragenter | Callback function for when the onDragEnter event occurs | function({event, node, expandedKeys}) |
dragleave | Callback function for when the onDragLeave event occurs | function({event, node}) |
dragover | Callback function for when the onDragOver event occurs | function({event, node}) |
dragstart | Callback function for when the onDragStart event occurs | function({event, node}) |
drop | Callback function for when the onDrop event occurs | function({event, node, dragNode, dragNodesKeys}) |
expand | Callback function for when a treeNode is expanded or collapsed | function(expandedKeys, {expanded: bool, node}) |
load | Callback function for when a treeNode is loaded | function(loadedKeys, {event, node}) |
rightClick | Callback function for when the user right clicks a treeNode | function({event, node}) |
select | Callback function for when the user clicks a treeNode | function(selectedKeys, e:{selected: bool, selectedNodes, node, event}) |
Tree Methods
Name | Description |
---|---|
scrollTo({ key: string | number; align?: 'top' | 'bottom' | 'auto'; offset?: number }) | Scroll to key item in virtual scroll |
TreeNode
Property | Description | Type | Default | Version |
---|---|---|---|---|
checkable | When Tree is checkable, set TreeNode display Checkbox or not | boolean | - | |
class | className | string | - | |
disableCheckbox | Disables the checkbox of the treeNode | boolean | false | |
disabled | Disables the treeNode | boolean | false | |
icon | customize icon. When you pass component, whose render will receive full TreeNode props as component props | slot|slot-scope | - | |
isLeaf | Determines if this is a leaf node(effective when loadData is specified) |
boolean | false | |
key | Used with (default)ExpandedKeys / (default)CheckedKeys / (default)SelectedKeys. P.S.: It must be unique in all of treeNodes of the tree! | string | number | internal calculated position of treeNode | |
selectable | Set whether the treeNode can be selected | boolean | true | |
style | style | string|object | - | |
title | Title | string | '---' |
DirectoryTree props
Property | Description | Type | Default |
---|---|---|---|
expandAction | Directory open logic, optional false 'click' 'dblclick' |
string | click |
FAQ
How to hide file icon when use showLine?
File icon realize by using switcherIcon. You can overwrite the style to hide it