fix: treeNodeLabelProp should only work on result value

examples/treeNodeLabelProp.tsx

@@ -0,0 +1,29 @@
+import '../assets/index.less';
+import React from 'react';
+import TreeSelect, { TreeNode } from '../src';
+
+const treeData = [
+  {
+    title: 'a list is option only',
+    showTitle: 'Node2',
+    value: '0-1',
+  },
+];
+
+function Demo() {
+  return (
+    <>
+      <TreeSelect
+        style={{ width: '100%' }}
+        treeDefaultExpandAll
+        treeData={treeData}
+        treeNodeLabelProp="showTitle"
+      />
+      <TreeSelect style={{ width: '100%' }} treeDefaultExpandAll treeNodeLabelProp="showTitle">
+        <TreeNode value="0-0" title="a list is option only" showTitle="Node2" />
+      </TreeSelect>
+    </>
+  );
+}
+
+export default Demo;

package.json

@@ -67,7 +67,7 @@
     "@babel/runtime": "^7.10.1",
     "classnames": "2.x",
     "rc-select": "^11.0.4",
-    "rc-tree": "^3.6.0",
-    "rc-util": "^5.0.1"
+    "rc-tree": "^3.8.0",
+    "rc-util": "^5.0.5"
   }
 }

src/TreeSelect.tsx

@@ -1,10 +1,12 @@
-import React from 'react';
+import * as React from 'react';
+import { useMemo } from 'react';
 import generateSelector, { SelectProps, RefSelectProps } from 'rc-select/lib/generate';
 import { getLabeledValue } from 'rc-select/lib/utils/valueUtil';
 import { convertDataToEntities } from 'rc-tree/lib/utils/treeUtil';
 import { conductCheck } from 'rc-tree/lib/utils/conductUtil';
 import { IconType } from 'rc-tree/lib/interface';
 import { FilterFunc, INTERNAL_PROPS_MARK } from 'rc-select/lib/interface/generator';
+import useMergedState from 'rc-util/lib/hooks/useMergedState';
 import warning from 'rc-util/lib/warning';
 import OptionList from './OptionList';
 import TreeNode from './TreeNode';
@@ -206,37 +208,42 @@ const RefTreeSelect = React.forwardRef<RefSelectProps, TreeSelectProps>((props,
   // ======================= Tree Data =======================
   // Legacy both support `label` or `title` if not set.
   // We have to fallback to function to handle this
+  const getTreeNodeTitle = (node: DataNode): React.ReactNode => {
+    if (!treeData) {
+      return node.title;
+    }
+    return node.label || node.title;
+  };
+
   const getTreeNodeLabelProp = (node: DataNode): React.ReactNode => {
     if (treeNodeLabelProp) {
       return node[treeNodeLabelProp];
     }
 
-    if (!treeData) {
-      return node.title;
-    }
-    return node.label || node.title;
+    return getTreeNodeTitle(node);
   };
 
   const mergedTreeData = useTreeData(treeData, children, {
-    getLabelProp: getTreeNodeLabelProp,
+    getLabelProp: getTreeNodeTitle,
     simpleMode: treeDataSimpleMode,
   });
 
-  const flattedOptions = React.useMemo(() => flattenOptions(mergedTreeData), [mergedTreeData]);
+  const flattedOptions = useMemo(() => flattenOptions(mergedTreeData), [mergedTreeData]);
   const [cacheKeyMap, cacheValueMap] = useKeyValueMap(flattedOptions);
   const [getEntityByKey, getEntityByValue] = useKeyValueMapping(cacheKeyMap, cacheValueMap);
 
   // Only generate keyEntities for check conduction when is `treeCheckable`
-  const { keyEntities: conductKeyEntities } = React.useMemo(() => {
+  const { keyEntities: conductKeyEntities } = useMemo(() => {
     if (treeConduction) {
       return convertDataToEntities(mergedTreeData as any);
     }
     return { keyEntities: null };
   }, [mergedTreeData, treeCheckable, treeCheckStrictly]);
 
   // ========================= Value =========================
-  const [value, setValue] = React.useState<DefaultValueType>(props.defaultValue);
-  const mergedValue = 'value' in props ? props.value : value;
+  const [value, setValue] = useMergedState<DefaultValueType>(props.defaultValue, {
+    value: props.value,
+  });
 
   /** Get `missingRawValues` which not exist in the tree yet */
   const splitRawValues = (newRawValues: RawValueType[]) => {
@@ -255,11 +262,11 @@ const RefTreeSelect = React.forwardRef<RefSelectProps, TreeSelectProps>((props,
     return { missingRawValues, existRawValues };
   };
 
-  const [rawValues, rawHalfCheckedKeys]: [RawValueType[], RawValueType[]] = React.useMemo(() => {
+  const [rawValues, rawHalfCheckedKeys]: [RawValueType[], RawValueType[]] = useMemo(() => {
     const valueHalfCheckedKeys: RawValueType[] = [];
     const newRawValues: RawValueType[] = [];
 
-    toArray(mergedValue).forEach(item => {
+    toArray(value).forEach(item => {
       if (item && typeof item === 'object' && 'value' in item) {
         if (item.halfChecked && treeCheckStrictly) {
           const entity = getEntityByValue(item.value);
@@ -284,10 +291,10 @@ const RefTreeSelect = React.forwardRef<RefSelectProps, TreeSelectProps>((props,
       ];
     }
     return [newRawValues, valueHalfCheckedKeys];
-  }, [mergedValue, mergedMultiple, mergedLabelInValue, treeCheckable, treeCheckStrictly]);
+  }, [value, mergedMultiple, mergedLabelInValue, treeCheckable, treeCheckStrictly]);
   const selectValues = useSelectValues(rawValues, {
     treeConduction,
-    value: mergedValue,
+    value,
     showCheckedStrategy,
     conductKeyEntities,
     getEntityByValue,
@@ -326,7 +333,7 @@ const RefTreeSelect = React.forwardRef<RefSelectProps, TreeSelectProps>((props,
       };
 
       let returnValues = mergedLabelInValue
-        ? getRawValueLabeled(eventValues, mergedValue, getEntityByValue, getTreeNodeLabelProp)
+        ? getRawValueLabeled(eventValues, value, getEntityByValue, getTreeNodeLabelProp)
         : eventValues;
 
       // We need fill half check back
@@ -340,7 +347,7 @@ const RefTreeSelect = React.forwardRef<RefSelectProps, TreeSelectProps>((props,
 
         returnValues = [
           ...(returnValues as LabelValueType[]),
-          ...getRawValueLabeled(halfValues, mergedValue, getEntityByValue, getTreeNodeLabelProp),
+          ...getRawValueLabeled(halfValues, value, getEntityByValue, getTreeNodeLabelProp),
         ];
       }
 

tests/Select.tree.spec.js

@@ -100,4 +100,29 @@ describe('TreeSelect.tree', () => {
 
     expect(wrapper.getSelection(0).text()).toEqual('empty string');
   });
+
+  describe('treeNodeLabelProp', () => {
+    [
+      { name: 'treeDate', treeData: [{ title: 'a light', op: 'Light', value: 'light' }] },
+      {
+        name: 'children',
+        children: <SelectNode title="a light" op="Light" value="light" />,
+      },
+    ].forEach(({ name, ...restProps }) => {
+      it(name, () => {
+        const wrapper = mount(
+          <TreeSelect
+            open
+            treeDefaultExpandAll
+            treeNodeLabelProp="op"
+            value="light"
+            {...restProps}
+          />,
+        );
+
+        expect(wrapper.find('.rc-tree-select-tree-title').text()).toEqual('a light');
+        expect(wrapper.find('.rc-tree-select-selection-item').text()).toEqual('Light');
+      });
+    });
+  });
 });