feat(tree): add check-strategy prop (#1122)

* docs(tree): add checkStrategy prop

* docs(tree): add log

* feat(n-tree): 属性更新

* feat(n-tree): update the description of docs

Co-authored-by: unknown <liyang@xiaoyouzi.com>

CHANGELOG.en-US.md

@@ -1,5 +1,9 @@
 # CHANGELOG
 
+### Feats
+
+- `n-tree` add `check-strategy` document prop.
+
 ## 2.18.1 (2021-09-08)
 
 ### Feats

CHANGELOG.zh-CN.md

@@ -1,5 +1,9 @@
 # CHANGELOG
 
+### Feats
+
+- `n-tree` 增加 `check-strategy` 文档属性
+
 ## 2.18.1 (2021-09-08)
 
 ### Feats

src/tree-select/src/TreeSelect.tsx

@@ -749,7 +749,7 @@ export default defineComponent({
                                   checkedKeys={this.treeCheckedKeys}
                                   selectedKeys={this.treeSelectedKeys}
                                   checkable={checkable}
-                                  internalCheckStrategy={this.checkStrategy}
+                                  checkStrategy={this.checkStrategy}
                                   cascade={this.mergedCascade}
                                   leafOnly={this.leafOnly}
                                   multiple={this.multiple}

src/tree/demos/enUS/index.demo-entry.md

@@ -31,6 +31,7 @@ batch-render
 | block-node | `boolean` | `false` | The node name is spread out in the whole row. |
 | cancelable | `boolean` | `true` | Whether node's select status can be cancelled. |
 | cascade | `boolean` | `false` | Whether to cascade checkboxes. |
+| check-strategy | `string` | `'all'` | The way to set the value of callback function. `all` means setting all checked node. `parent` means setting all checked parent node when all child node are checked. `child` means setting all child node. |
 | checkable | `boolean` | `false` | Whether to display the selection box, you need to set `cascade` to `true`. |
 | children-field | `string` | `'children'` | The children field in `TreeOption`. |
 | checked-keys | `Array<string \| number>` | `undefined` | If set, checked status will work in controlled manner. |

src/tree/demos/zhCN/index.demo-entry.md

@@ -31,6 +31,7 @@ batch-render
 | block-node | `boolean` | `false` | 节点名称整行撑开 |
 | cancelable | `boolean` | `true` | 选中之后是否允许取消 |
 | cascade | `boolean` | `false` | 是否关联选项 |
+| check-strategy | `string` | `'all'` | 设置勾选策略来指定回调参数的值，`all` 表示回调函数值为全部选中节点；`parent` 表示回调函数值为父节点（当父节点下所有子节点都选中时）；`child` 表示回调函数值为子节点 |
 | checkable | `boolean` | `false` | 是否显示选择框，需要将 `cascade` 设置为 `true` |
 | children-field | `string` | `'children'` | 替代 `TreeOption` 中的 children 字段名 |
 | checked-keys | `Array<string \| number>` | `undefined` | 如果设定则 `checked` 状态受控 |

src/tree/src/Tree.tsx

@@ -213,7 +213,7 @@ const treeProps = {
     type: Boolean,
     default: true
   },
-  internalCheckStrategy: {
+  checkStrategy: {
     type: String as PropType<CheckStrategy>,
     default: 'all'
   }
@@ -269,7 +269,7 @@ export default defineComponent({
       })
     })
     const mergedCheckStrategyRef = computed(() =>
-      props.leafOnly ? 'child' : props.internalCheckStrategy
+      props.leafOnly ? 'child' : props.checkStrategy
     )
     const displayedCheckedKeysRef = computed(() => {
       return checkedStatusRef.value.checkedKeys