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499 lines
16 KiB
Markdown
Executable File
499 lines
16 KiB
Markdown
Executable File
---
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title: Tree 树形选择框
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description:
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type: 0
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group: null
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menuName: Tree 树形选择框
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icon:
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order: 59
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---
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## 基本使用
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配置的`options`中，可以通过`children`字段进行嵌套展示，实现树形选择器
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```schema:height="400" scope="body"
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{
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"type": "form",
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"api": "https://houtai.baidu.com/api/mock2/form/saveForm",
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"controls": [
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{
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"type": "tree",
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"name": "tree",
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"label": "Tree",
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"options": [
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{
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"label": "Folder A",
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"value": 1,
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"children": [
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{
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"label": "file A",
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"value": 2
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},
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{
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"label": "file B",
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"value": 3
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}
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]
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},
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{
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"label": "file C",
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"value": 4
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},
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{
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"label": "file D",
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"value": 5
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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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## 选择器样式
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配置`"type": "tree-select"`可以实现选择器样式
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```schema:height="400" scope="body"
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{
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"type": "form",
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"api": "https://houtai.baidu.com/api/mock2/form/saveForm",
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"controls": [
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{
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"type": "tree-select",
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"name": "tree",
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"label": "Tree",
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"options": [
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{
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"label": "Folder A",
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"value": 1,
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"children": [
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{
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"label": "file A",
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"value": 2
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},
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{
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"label": "file B",
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"value": 3
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}
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]
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},
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{
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"label": "file C",
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"value": 4
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},
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{
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"label": "file D",
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"value": 5
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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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## 选中父节点是否自动选中子节点
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默认选中父节点会自动选中子节点，可以设置`"cascade": true`，不自动选中子节点
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```schema:height="800" scope="body"
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{
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"type": "form",
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"debug": true,
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"api": "https://houtai.baidu.com/api/mock2/form/saveForm",
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"controls": [
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{
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"type": "tree",
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"name": "tree1",
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"label": "默认自动选中子节点",
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"multiple": true,
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"options": [
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{
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"label": "A",
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"value": "a"
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},
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{
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"label": "B",
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"value": "b",
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"children": [
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{
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"label": "B-1",
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"value": "b-1"
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},
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{
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"label": "B-2",
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"value": "b-2"
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},
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{
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"label": "B-3",
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"value": "b-3"
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}
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]
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},
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{
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"label": "C",
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"value": "c"
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}
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]
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},
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{
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"type": "divider"
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},
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{
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"type": "tree",
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"name": "tree2",
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"label": "不自动选中子节点",
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"multiple": true,
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"cascade": true,
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"options": [
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{
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"label": "A",
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"value": "a"
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},
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{
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"label": "B",
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"value": "b",
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"children": [
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{
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"label": "B-1",
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"value": "b-1"
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},
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{
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"label": "B-2",
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"value": "b-2"
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},
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{
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"label": "B-3",
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"value": "b-3"
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}
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]
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},
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{
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"label": "C",
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"value": "c"
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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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## 选中父节点，值是否包含子节点
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默认选中父节点，是不会带上子节点的值，想要自动带上子节点的值，那么配置`"withChildren": true`
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```schema:height="800" scope="body"
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{
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"type": "form",
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"debug": true,
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"api": "https://houtai.baidu.com/api/mock2/form/saveForm",
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"controls": [
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{
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"type": "tree",
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"name": "tree1",
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"label": "默认不自动带上子节点的值",
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"multiple": true,
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"options": [
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{
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"label": "A",
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"value": "a"
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},
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{
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"label": "B",
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"value": "b",
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"children": [
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{
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"label": "B-1",
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"value": "b-1"
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},
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{
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"label": "B-2",
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"value": "b-2"
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},
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{
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"label": "B-3",
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"value": "b-3"
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}
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]
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},
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{
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"label": "C",
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"value": "c"
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}
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]
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},
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{
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"type": "divider"
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},
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{
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"type": "tree",
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"name": "tree2",
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"label": "自动带上子节点的值",
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"multiple": true,
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"withChildren": true,
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"options": [
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{
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"label": "A",
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"value": "a"
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},
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{
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"label": "B",
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"value": "b",
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"children": [
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{
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"label": "B-1",
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"value": "b-1"
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},
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{
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"label": "B-2",
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"value": "b-2"
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},
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{
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"label": "B-3",
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"value": "b-3"
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}
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]
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},
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{
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"label": "C",
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"value": "c"
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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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也可以设置`onlyChildren`，实现只包含子节点的值
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```schema:height="800" scope="body"
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{
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"type": "form",
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"debug": true,
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"api": "https://houtai.baidu.com/api/mock2/form/saveForm",
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"controls": [
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{
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"type": "tree",
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"name": "tree1",
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"label": "默认不自动带上子节点的值",
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"multiple": true,
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"options": [
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{
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"label": "A",
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"value": "a"
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},
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{
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"label": "B",
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"value": "b",
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"children": [
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{
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"label": "B-1",
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"value": "b-1"
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},
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{
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"label": "B-2",
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"value": "b-2"
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},
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{
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"label": "B-3",
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"value": "b-3"
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}
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]
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},
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{
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"label": "C",
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"value": "c"
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}
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]
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},
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{
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"type": "divider"
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},
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{
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"type": "tree",
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"name": "tree2",
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"label": "只包含子节点的值",
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"multiple": true,
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"onlyChildren": true,
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"options": [
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{
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"label": "A",
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"value": "a"
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},
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{
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"label": "B",
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"value": "b",
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"children": [
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{
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"label": "B-1",
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"value": "b-1"
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},
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{
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"label": "B-2",
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"value": "b-2"
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},
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{
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"label": "B-3",
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"value": "b-3"
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}
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]
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},
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{
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"label": "C",
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"value": "c"
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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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## 默认展开
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默认是展开所有子节点的，如果不想默认展开，则配置`"initiallyOpen": false`
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```schema:height="500" scope="body"
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{
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"type": "form",
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"debug": true,
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"api": "https://houtai.baidu.com/api/mock2/form/saveForm",
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"controls": [
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{
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"type": "tree",
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"name": "tree1",
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"label": "默认不自动带上子节点的值",
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"initiallyOpen": false,
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"options": [
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{
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"label": "A",
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"value": "a"
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},
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{
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"label": "B",
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"value": "b",
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"children": [
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{
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"label": "B-1",
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"value": "b-1"
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},
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{
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"label": "B-2",
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"value": "b-2"
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},
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{
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"label": "B-3",
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"value": "b-3"
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}
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]
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},
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{
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"label": "C",
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"value": "c"
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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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如果层级较多，也可以配置`unfoldedLevel`指定展开的层级数。
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下例中设置`"unfoldedLevel": 1`，默认展开第 1 层
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```schema:height="500" scope="body"
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{
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"type": "form",
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"debug": true,
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"api": "https://houtai.baidu.com/api/mock2/form/saveForm",
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"controls": [
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{
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"type": "tree",
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"name": "tree1",
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"label": "默认不自动带上子节点的值",
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"initiallyOpen": false,
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"unfoldedLevel": 1,
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"options": [
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{
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"label": "A",
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"value": "a"
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},
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{
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"label": "B",
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"value": "b",
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"children": [
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{
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"label": "B-1",
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"value": "b-1"
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},
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{
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"label": "B-2",
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"value": "b-2",
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"children": [
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{
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"label": "B-2-1",
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"value": "b-2-1"
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},
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{
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"label": "B-2-2",
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"value": "b-2-2"
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},
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{
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"label": "B-2-3",
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"value": "b-2-3"
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}
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]
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},
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{
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"label": "B-3",
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"value": "b-3"
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}
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]
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},
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{
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"label": "C",
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"value": "c"
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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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## 属性表
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当做选择器表单项使用时，除了支持 [普通表单项属性表](./formitem#%E5%B1%9E%E6%80%A7%E8%A1%A8) 中的配置以外，还支持下面一些配置
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| 属性名 | 类型 | 默认值 | 说明 |
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| ------------- | ------------------------------------ | ---------------- | ------------------------------------------------------------------------------------------------------------------- |
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| options | `Array<object>`或`Array<string>` | | [选项组](./options#%E9%9D%99%E6%80%81%E9%80%89%E9%A1%B9%E7%BB%84-options) |
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| source | `string`或 [API](../../../types/api) | | [动态选项组](./options#%E5%8A%A8%E6%80%81%E9%80%89%E9%A1%B9%E7%BB%84-source) |
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| autoComplete | [API](../../../types/api) | | [自动提示补全](./options#%E8%87%AA%E5%8A%A8%E8%A1%A5%E5%85%A8-autocomplete) |
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| multiple | `boolean` | `false` | 是否多选 |
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| delimeter | `string` | `false` | [拼接符](./options#%E6%8B%BC%E6%8E%A5%E7%AC%A6-delimiter) |
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| labelField | `string` | `"label"` | [选项标签字段](./options#%E9%80%89%E9%A1%B9%E6%A0%87%E7%AD%BE%E5%AD%97%E6%AE%B5-labelfield) |
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| valueField | `string` | `"value"` | [选项值字段](./options#%E9%80%89%E9%A1%B9%E5%80%BC%E5%AD%97%E6%AE%B5-valuefield) |
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| joinValues | `boolean` | `true` | [拼接值](./options#%E6%8B%BC%E6%8E%A5%E5%80%BC-joinvalues) |
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| extractValue | `boolean` | `false` | [提取值](./options#%E6%8F%90%E5%8F%96%E5%A4%9A%E9%80%89%E5%80%BC-extractvalue) |
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| creatable | `boolean` | `false` | [新增选项](./options#%E5%89%8D%E7%AB%AF%E6%96%B0%E5%A2%9E-creatable) |
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| addControls | Array<[表单项](./formitem)> | | [自定义新增表单项](./options#%E8%87%AA%E5%AE%9A%E4%B9%89%E6%96%B0%E5%A2%9E%E8%A1%A8%E5%8D%95%E9%A1%B9-addcontrols) |
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| addApi | [API](../../types/api) | | [配置新增选项接口](./options#%E9%85%8D%E7%BD%AE%E6%96%B0%E5%A2%9E%E6%8E%A5%E5%8F%A3-addapi) |
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| editable | `boolean` | `false` | [编辑选项](./options#%E5%89%8D%E7%AB%AF%E7%BC%96%E8%BE%91-editable) |
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| editControls | Array<[表单项](./formitem)> | | [自定义编辑表单项](./options#%E8%87%AA%E5%AE%9A%E4%B9%89%E7%BC%96%E8%BE%91%E8%A1%A8%E5%8D%95%E9%A1%B9-editcontrols) |
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| editApi | [API](../../types/api) | | [配置编辑选项接口](./options#%E9%85%8D%E7%BD%AE%E7%BC%96%E8%BE%91%E6%8E%A5%E5%8F%A3-editapi) |
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| removable | `boolean` | `false` | [删除选项](./options#%E5%88%A0%E9%99%A4%E9%80%89%E9%A1%B9) |
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| deleteApi | [API](../../types/api) | | [配置删除选项接口](./options#%E9%85%8D%E7%BD%AE%E5%88%A0%E9%99%A4%E6%8E%A5%E5%8F%A3-deleteapi) |
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| searchable | `boolean` | `false` | 是否可检索，仅在 type 为 `tree-select` 的时候生效 |
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| hideRoot | `boolean` | `true` | 如果想要显示个顶级节点，请设置为 `false` |
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| rootLabel | `boolean` | `"顶级"` | 当 `hideRoot` 不为 `false` 时有用，用来设置顶级节点的文字。 |
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| showIcon | `boolean` | `true` | 是否显示图标 |
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| showRadio | `boolean` | `false` | 是否显示单选按钮，`multiple` 为 `false` 是有效。 |
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| initiallyOpen | `boolean` | `true` | 设置是否默认展开所有层级。 |
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| unfoldedLevel | `number` | `0` | 设置默认展开的级数，只有`initiallyOpen`不是`true`时生效。 |
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| cascade | `boolean` | `false` | 当选中父节点时不自动选择子节点。 |
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| withChildren | `boolean` | `false` | 选中父节点时，值里面将包含子节点的值，否则只会保留父节点的值。 |
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| onlyChildren | `boolean` | `false` | 多选时，选中父节点时，是否只将其子节点加入到值中。 |
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| rootCreatable | `boolean` | `false` | 是否可以创建顶级节点 |
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| rootCreateTip | `string` | `"添加一级节点"` | 创建顶级节点的悬浮提示 |
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| minLength | `number` | | 最少选中的节点数 |
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| maxLength | `number` | | 最多选中的节点数 |
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