mirror of
https://gitee.com/element-plus/element-plus.git
synced 2024-12-14 17:31:02 +08:00
883fd8d6ef
* refactor(components): el-alert icon (#3441) * refactor(components): el-alert icon * fix: el-alert test * fix: [el-alert] lint error * feat(utils): add icon util * refactor(components): el-alert icon * refactor(utils): icon * test: update alert test * refactor: remove el-icon in util * refactor(components): el-notification icon (#3512) * chore: temp save changes * refactor: update icon * fix: var * docs: update icon * fix: type class error * style: remove unused class * fix: update icon type * docs: update icon * fix: update iconComponent * refactor(components): el-dialog icon (#3505) * refactor(components): [el-dialog] icon * fix: typo * refactor: dialog icon ref * refactor: dialog icon * style: update close button size * refactor(components): el-message-box icon (#3507) * refactor(components): message-box icon * refactor(components): message icon * fix: test * refactor: update ref * fix: test * docs: update icon * fix: delete unused code * docs: update type * fix: update close button size * fix: type * fix: icon type class * fix: icon type * fix: update type class * refactor(components): el-popconfirm icon (#3513) * refactor(components): el-popconfirm icon * fix: space styles * docs: update example * docs: update example for trigger event * refactor(components): el-page-header icon (#3518) * refactor(components): el-page-header icon * docs: update icon * fix: space errors * refactor(components): el-steps icon (#3520) * refactor(components): el-backtop icon (#3514) * refactor(components): el-backtop icon * fix: update font size * refactor(components): el-button icon (#3536) * refactor(components): el-button icon * fix: update example * refactor(components): el-button icon * refactor: style simplify Co-authored-by: imswk <syfzxx@vip.qq.com> * refactor(components): el-tree icon (#3590) Co-authored-by: qianjie <qianjie@patsnap.com> * refactor(components): el-avatar icon (#3599) Co-authored-by: qianjie <qianjie@patsnap.com> * refactor(components): el-carousel icon (#3602) Co-authored-by: qianjie <qianjie@patsnap.com> * refactor(components): el-progress icon (#3607) Co-authored-by: qianjie <qianjie@patsnap.com> * refactor(components): el-result icon (#3609) Co-authored-by: qianjie <qianjie@patsnap.com> * refactor(components): el-timeline icon (#3646) Co-authored-by: qianjie <qianjie@patsnap.com> * refactor(components): el-table icon (#3611) Co-authored-by: qianjie <qianjie@patsnap.com> * chore: add vue to gitignore * fix: buildProp error * refactor(components): el-pagination icon (#3605) * test: el-menu deprecated icon font (#3794) * test: el-loading deprecated icon font (#3795) * chore: Update changelog 1.1.0-beta.20 (#3838) * fix: about custom extension of table column (#3437) * refactor(components): el-autocomplete icon (#3783) * refactor(components): el-dropdown icon (#3517) * refactor(components): el-dropdown icon * fix: arrow down icon size * style: revert * fix: font-size * refactor(components): el-link icon (#3538) * refactor(components): el-link icon * refactor: update example * fix: import icons * docs: add tip * refactor: update link icon * fix: icon align * fix: typo * refactor(components): el-select icon (#3780) * refactor(components): el-input icon (#3565) * refactor(components): input icon * docs: update example * refactor(components): el-select icon * docs: icon usage * fix: input style * fix: add scoped * docs: fix icon * fix: icon align * fix: icon align * fix: typo * fix: typo * refactor(components): el-input-number icon (#3566) * refactor(components): el-input-number icon * fix: icon align * refactor(components): el-tag icon (#3793) * refactor(components): el-tag icon * fix: icon align * fix: icon margin * refactor(components): el-switch icon (#3787) * refactor(components): el-switch icon * fix: icon align * docs: add icon usage * refactor(components): el-collapse icon (#3788) * refactor(components): el-collapse icon * docs: update icon demo * fix: typo * refactor(components): el-uplod icon (#3598) * refactor(components): el-uplod icon * docs: update icon useage * docs: fix icon * docs: fix icon * docs: update upload-filled icon * fix: icon align * fix: item icon align * refactor(components): el-select-v2 icon (#3781) * refactor(components): el-select-v2 icon * revert: play/main.ts * fix: icon style * fix: icon solt * refactor(components): el-cascader icon (#3785) * refactor(components): input icon * docs: update example * refactor(components): el-select icon * refactor(components): el-cascader icon * refactor(components): el-tag icon * fix: icon align * fix: icon margin * docs: icon usage * fix: input style * fix: add scoped * test: remove unuesd code * fix: cascader-panel * fix: icon style * fix: icon animation * refactor(components): el-drawer icon (#3796) * refactor(components): el-drawer icon * fix: close icon size * fix: close icon align * refactor(components): el-transfer icon (#3792) * refactor(components): el-transfer icon * fix: icon align * refactor(components): el-image-viewer icon (#3797) * refactor(components): el-image-view icon * fix: icon size * docs: update domo * style: format vue * fix: fullscreen icon * Add cursor for icons Co-authored-by: jeremywuuuuu <15975785+JeremyWuuuuu@users.noreply.github.com> * refactor(components): rate-icon (#3891) * refactor(components): el-rate icon * docs: update example * docs: update * test: update * docs: update * fix: variable rename * fix: demo update * fix: allow half bug * refactor(components): el-time-picker icon (#3834) * refactor(components): el-button icon * refactor(components): date-picker icon * refactor(components): input icon * docs: update example * refactor(components): el-select icon * refactor(components): el-time-select icon * fix: icon width * docs: icon usage * fix: input style * fix: add scoped * fix: icon size * docs: icon display * fix: icon in button * docs: fix error * refactor(components): el-time-picker icon * fix: var * fix: icon align * test: delete unused code * test: fix error * fix: remove unused code * docs: fix typo * docs: update icon * fix: default prefix icon * fix: range picker icon align * Update cursor for picker Co-authored-by: jeremywuuuuu <15975785+JeremyWuuuuu@users.noreply.github.com> * fix(components): el-input close icon * chore: delete fonts * fix: copy full style Co-authored-by: imswk <syfzxx@vip.qq.com> Co-authored-by: bastarder <85257684@qq.com> Co-authored-by: qianjie <qianjie@patsnap.com> Co-authored-by: Element <wallement@gmail.com> Co-authored-by: Alan Wang <948467222@qq.com> Co-authored-by: jeremywuuuuu <15975785+JeremyWuuuuu@users.noreply.github.com>
190 lines
24 KiB
Markdown
190 lines
24 KiB
Markdown
---
|
|
title: Tree
|
|
lang: en-US
|
|
---
|
|
|
|
# Tree
|
|
|
|
Display a set of data with hierarchies.
|
|
|
|
## Basic usage
|
|
|
|
Basic tree structure.
|
|
|
|
:::demo
|
|
|
|
tree/basic
|
|
|
|
## Selectable
|
|
|
|
Used for node selection.
|
|
|
|
:::demo This example also shows how to load node data asynchronously.
|
|
|
|
tree/selectable
|
|
|
|
:::
|
|
|
|
## Custom leaf node in lazy mode
|
|
|
|
:::demo A node's data is not fetched until it is clicked, so the Tree cannot predict whether a node is a leaf node. That's why a drop-down button is added to each node, and if it is a leaf node, the drop-down button will disappear when clicked. That being said, you can also tell the Tree in advance whether the node is a leaf node, avoiding the render of the drop-down button before a leaf node.
|
|
|
|
tree/custom-leaf
|
|
|
|
:::
|
|
|
|
## Disabled checkbox
|
|
|
|
The checkbox of a node can be set as disabled.
|
|
|
|
:::demo In the example, 'disabled' property is declared in defaultProps, and some nodes are set as 'disabled:true'. The corresponding checkboxes are disabled and can't be clicked.
|
|
|
|
tree/disabled
|
|
|
|
:::
|
|
|
|
## Default expanded and default checked
|
|
|
|
Tree nodes can be initially expanded or checked
|
|
|
|
:::demo Use `default-expanded-keys` and `default-checked-keys` to set initially expanded and initially checked nodes respectively. Note that for them to work, `node-key` is required. Its value is the name of a key in the data object, and the value of that key should be unique across the whole tree.
|
|
|
|
tree/default-state
|
|
|
|
:::
|
|
|
|
## Checking tree nodes
|
|
|
|
:::demo This example shows how to get and set checked nodes. They both can be done in two approaches: node and key. If you are taking the key approach, `node-key` is required.
|
|
|
|
tree/checking-tree
|
|
|
|
:::
|
|
|
|
## Custom node content
|
|
|
|
The content of tree nodes can be customized, so you can add icons or buttons as you will
|
|
|
|
:::demo There are two ways to customize template for tree nodes: `render-content` and scoped slot. Use `render-content` to assign a render function that returns the content of tree nodes. See Vue's documentation for a detailed introduction of render functions. If you prefer scoped slot, you'll have access to `node` and `data` in the scope, standing for the TreeNode object and node data of the current node respectively. Note that the `render-content` demo can't run in jsfiddle because it doesn't support JSX syntax. In a real project, `render-content` will work if relevant dependencies are correctly configured.
|
|
|
|
tree/customized-node
|
|
|
|
:::
|
|
|
|
## Tree node filtering
|
|
|
|
Tree nodes can be filtered
|
|
|
|
:::demo Invoke the `filter` method of the Tree instance to filter tree nodes. Its parameter is the filtering keyword. Note that for it to work, `filter-node-method` is required, and its value is the filtering method.
|
|
|
|
tree/filtering
|
|
|
|
:::
|
|
|
|
## Accordion
|
|
|
|
Only one node among the same level can be expanded at one time.
|
|
|
|
:::demo
|
|
|
|
tree/accordion
|
|
|
|
:::
|
|
|
|
## Draggable
|
|
|
|
You can drag and drop Tree nodes by adding a `draggable` attribute.
|
|
|
|
:::demo
|
|
|
|
tree/draggable
|
|
|
|
:::
|
|
|
|
## Attributes
|
|
|
|
| Attribute | Description | Type | Accepted Values | Default |
|
|
| --------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------- | --------------- | ------- |
|
|
| data | tree data | array | — | — |
|
|
| empty-text | text displayed when data is void | string | — | — |
|
|
| node-key | unique identity key name for nodes, its value should be unique across the whole tree | string | — | — |
|
|
| props | configuration options, see the following table | object | — | — |
|
|
| render-after-expand | whether to render child nodes only after a parent node is expanded for the first time | boolean | — | true |
|
|
| load | method for loading subtree data, only works when `lazy` is true | function(node, resolve) | — | — |
|
|
| render-content | render function for tree node | Function(h, { node, data, store }) | — | — |
|
|
| highlight-current | whether current node is highlighted | boolean | — | false |
|
|
| default-expand-all | whether to expand all nodes by default | boolean | — | false |
|
|
| expand-on-click-node | whether to expand or collapse node when clicking on the node, if false, then expand or collapse node only when clicking on the arrow icon. | boolean | — | true |
|
|
| check-on-click-node | whether to check or uncheck node when clicking on the node, if false, the node can only be checked or unchecked by clicking on the checkbox. | boolean | — | false |
|
|
| auto-expand-parent | whether to expand father node when a child node is expanded | boolean | — | true |
|
|
| default-expanded-keys | array of keys of initially expanded nodes | array | — | — |
|
|
| show-checkbox | whether node is selectable | boolean | — | false |
|
|
| check-strictly | whether checked state of a node not affects its father and child nodes when `show-checkbox` is `true` | boolean | — | false |
|
|
| default-checked-keys | array of keys of initially checked nodes | array | — | — |
|
|
| current-node-key | key of initially selected node | string, number | — | — |
|
|
| filter-node-method | this function will be executed on each node when use filter method. if return `false`, tree node will be hidden. | Function(value, data, node) | — | — |
|
|
| accordion | whether only one node among the same level can be expanded at one time | boolean | — | false |
|
|
| indent | horizontal indentation of nodes in adjacent levels in pixels | number | — | 16 |
|
|
| icon | custome tree node icon component | string / Component | - | - |
|
|
| lazy | whether to lazy load leaf node, used with `load` attribute | boolean | — | false |
|
|
| draggable | whether enable tree nodes drag and drop | boolean | — | false |
|
|
| allow-drag | this function will be executed before dragging a node. If `false` is returned, the node can not be dragged | Function(node) | — | — |
|
|
| allow-drop | this function will be executed before the dragging node is dropped. If `false` is returned, the dragging node can not be dropped at the target node. `type` has three possible values: 'prev' (inserting the dragging node before the target node), 'inner' (inserting the dragging node to the target node) and 'next' (inserting the dragging node after the target node) | Function(draggingNode, dropNode, type) | — | — |
|
|
|
|
## props
|
|
|
|
| Attribute | Description | Type | Accepted Values | Default |
|
|
| --------- | ----------------------------------------------------------------------------- | ----------------------------- | --------------- | ------- |
|
|
| label | specify which key of node object is used as the node's label | string, function(data, node) | — | — |
|
|
| children | specify which node object is used as the node's subtree | string | — | — |
|
|
| disabled | specify which key of node object represents if node's checkbox is disabled | boolean, function(data, node) | — | — |
|
|
| isLeaf | specify whether the node is a leaf node, only works when lazy load is enabled | boolean, function(data, node) | — | — |
|
|
|
|
## Method
|
|
|
|
`Tree` has the following method, which returns the currently selected array of nodes.
|
|
| Method | Description | Parameters |
|
|
| --------------- | ---------------------------------------- | ---------------------------------------- |
|
|
| filter | filter all tree nodes, filtered nodes will be hidden | Accept a parameter which will be used as first parameter for filter-node-method |
|
|
| updateKeyChildren | set new data to node, only works when `node-key` is assigned | (key, data) Accept two parameters: 1. key of node 2. new data |
|
|
| getCheckedNodes | If the node can be selected (`show-checkbox` is `true`), it returns the currently selected array of nodes | (leafOnly, includeHalfChecked) Accept two boolean type parameters: 1. default value is `false`. If the parameter is `true`, it only returns the currently selected array of sub-nodes. 2. default value is `false`. If the parameter is `true`, the return value contains halfchecked nodes |
|
|
| setCheckedNodes | set certain nodes to be checked, only works when `node-key` is assigned | an array of nodes to be checked |
|
|
| getCheckedKeys | If the node can be selected (`show-checkbox` is `true`), it returns the currently selected array of node's keys | (leafOnly) Accept a boolean type parameter whose default value is `false`. If the parameter is `true`, it only returns the currently selected array of sub-nodes. |
|
|
| setCheckedKeys | set certain nodes to be checked, only works when `node-key` is assigned | (keys, leafOnly) Accept two parameters: 1. an array of node's keys to be checked 2. a boolean type parameter whose default value is `false`. If the parameter is `true`, it only returns the currently selected array of sub-nodes. |
|
|
| setChecked | set node to be checked or not, only works when `node-key` is assigned | (key/data, checked, deep) Accept three parameters: 1. node's key or data to be checked 2. a boolean typed parameter indicating checked or not. 3. a boolean typed parameter indicating deep or not. |
|
|
| getHalfCheckedNodes | If the node can be selected (`show-checkbox` is `true`), it returns the currently half selected array of nodes | - |
|
|
| getHalfCheckedKeys | If the node can be selected (`show-checkbox` is `true`), it returns the currently half selected array of node's keys | - |
|
|
| getCurrentKey | return the highlight node's key (null if no node is highlighted) | — |
|
|
| getCurrentNode | return the highlight node's data (null if no node is highlighted) | — |
|
|
| setCurrentKey | set highlighted node by key, only works when `node-key` is assigned | (key, shouldAutoExpandParent=true) 1. the node's key to be highlighted. If `null`, cancel the currently highlighted node 2. whether to automatically expand parent node |
|
|
| setCurrentNode | set highlighted node, only works when `node-key` is assigned | (node, shouldAutoExpandParent=true) 1. the node to be highlighted 2. whether to automatically expand parent node |
|
|
| getNode | get node by data or key | (data) the node's data or key |
|
|
| remove | remove a node, only works when node-key is assigned | (data) the node's data or node to be deleted |
|
|
| append | append a child node to a given node in the tree | (data, parentNode) 1. child node's data to be appended 2. parent node's data, key or node |
|
|
| insertBefore | insert a node before a given node in the tree | (data, refNode) 1. node's data to be inserted 2. reference node's data, key or node |
|
|
| insertAfter | insert a node after a given node in the tree | (data, refNode) 1. node's data to be inserted 2. reference node's data, key or node |
|
|
|
|
## Events
|
|
|
|
| Event Name | Description | Parameters |
|
|
| ---------------- | --------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
|
|
| node-click | triggers when a node is clicked | three parameters: node object corresponding to the node clicked, `node` property of TreeNode, TreeNode itself |
|
|
| node-contextmenu | triggers when a node is clicked by right button | four parameters: event, node object corresponding to the node clicked, `node` property of TreeNode, TreeNode itself |
|
|
| check-change | triggers when the selected state of the node changes | three parameters: node object corresponding to the node whose selected state is changed, whether the node is selected, whether node's subtree has selected nodes |
|
|
| check | triggers after clicking the checkbox of a node | two parameters: node object corresponding to the node that is checked / unchecked, tree checked status object which has four props: checkedNodes, checkedKeys, halfCheckedNodes, halfCheckedKeys |
|
|
| current-change | triggers when current node changes | two parameters: node object corresponding to the current node, `node` property of TreeNode |
|
|
| node-expand | triggers when current node open | three parameters: node object corresponding to the node opened, `node` property of TreeNode, TreeNode itself |
|
|
| node-collapse | triggers when current node close | three parameters: node object corresponding to the node closed, `node` property of TreeNode, TreeNode itself |
|
|
| node-drag-start | triggers when dragging starts | two parameters: node object corresponding to the dragging node, event. |
|
|
| node-drag-enter | triggers when the dragging node enters another node | three parameters: node object corresponding to the dragging node, node object corresponding to the entering node, event. |
|
|
| node-drag-leave | triggers when the dragging node leaves a node | three parameters: node object corresponding to the dragging node, node object corresponding to the leaving node, event. |
|
|
| node-drag-over | triggers when dragging over a node (like mouseover event) | three parameters: node object corresponding to the dragging node, node object corresponding to the dragging over node, event. |
|
|
| node-drag-end | triggers when dragging ends | four parameters: node object corresponding to the dragging node, node object corresponding to the dragging end node (may be `undefined`), node drop type (before / after / inner), event. |
|
|
| node-drop | triggers after the dragging node is dropped | four parameters: node object corresponding to the dragging node, node object corresponding to the dropped node, node drop type (before / after / inner), event. |
|
|
|
|
## Slots
|
|
|
|
| Name | Description |
|
|
| ---- | -------------------------------------------------------------------- |
|
|
| — | Custom content for tree nodes. The scope parameter is { node, data } |
|