fix: tree-select search value logic

components/vc-tree-select/src/Base/BaseSelector.jsx

@@ -32,6 +32,7 @@ export const selectorPropTypes = () => ({
   focused: PropTypes.looseBool,
   isMultiple: PropTypes.looseBool,
   showSearch: PropTypes.looseBool,
+  searchValue: PropTypes.string,
 });
 
 function noop() {}

components/vc-tree-select/src/SearchInput.jsx

@@ -20,19 +20,23 @@ const SearchInput = {
     renderPlaceholder: PropTypes.func,
     needAlign: PropTypes.looseBool,
     ariaId: PropTypes.string,
+    isMultiple: PropTypes.looseBool.def(true),
   },
   setup(props) {
     const measureRef = ref();
     const inputWidth = ref(0);
     // We measure width and set to the input immediately
     onMounted(() => {
-      watch(
-        computed(()=>props.searchValue),
-        () => {
-          inputWidth.value = measureRef.value.scrollWidth;
-        },
-        { flush: 'post' },
-      );
+      if(props.isMultiple) {
+        watch(
+          computed(()=>props.searchValue),
+          () => {
+            inputWidth.value = measureRef.value.scrollWidth;
+          },
+          { flush: 'post', immediate: true },
+        );
+      }
+
     });
     return {
       measureRef,
@@ -52,15 +56,11 @@ const SearchInput = {
   },
   created() {
     this.inputRef = createRef();
-    // this.mirrorInputRef = createRef();
     this.prevProps = { ...this.$props };
   },
   mounted() {
     this.$nextTick(() => {
-      const { open, needAlign } = this.$props;
-      if (needAlign) {
-        this.alignInputWidth();
-      }
+      const { open } = this.$props;
 
       if (open) {
         this.focus(true);
@@ -75,22 +75,11 @@ const SearchInput = {
       if (open && prevProps.open !== open) {
         this.focus();
       }
-      // if (needAlign && searchValue !== prevProps.searchValue) {
-      //   this.alignInputWidth();
-      // }
+
       this.prevProps = { ...this.$props };
     });
   },
   methods: {
-    /**
-     * `scrollWidth` is not correct in IE, do the workaround.
-     * ref: https://github.com/react-component/tree-select/issues/65
-     *  clientWidth 0 when mounted in vue. why?
-     */
-    // alignInputWidth() {
-    //   this.inputRef.current.style.width = `${this.mirrorInputRef.current.clientWidth ||
-    //     this.mirrorInputRef.current.offsetWidth}px`;
-    // },
 
     /**
      * Need additional timeout for focus cause parent dom is not ready when didMount trigger
@@ -125,7 +114,7 @@ const SearchInput = {
   },
 
   render() {
-    const { searchValue, prefixCls, disabled, renderPlaceholder, open, ariaId } = this.$props;
+    const { searchValue, prefixCls, disabled, renderPlaceholder, open, ariaId, isMultiple } = this.$props;
     const {
       vcTreeSelect: { onSearchInputKeyDown },
       handleInputChange,
@@ -134,7 +123,7 @@ const SearchInput = {
     } = this;
     return (
       <>
-        <span class={`${prefixCls}-selection-search`} style={{ width: inputWidth + 'px' }}>
+        <span class={`${prefixCls}-selection-search`} style={isMultiple ? { width: inputWidth + 'px' }:{}}>
           {withDirectives(
             <input
               type="text"
@@ -152,9 +141,9 @@ const SearchInput = {
             />,
             [[antInput]],
           )}
-          <span ref="measureRef" class={`${prefixCls}-selection-search-mirror`} aria-hidden>
+          {isMultiple ? <span ref="measureRef" class={`${prefixCls}-selection-search-mirror`} aria-hidden>
             {mirrorSearchValue}&nbsp;
-          </span>
+          </span> : null}
         </span>
         {renderPlaceholder && !mirrorSearchValue ? renderPlaceholder() : null}
       </>

components/vc-tree-select/src/Select.jsx

@@ -29,8 +29,6 @@ import KeyCode from '../../_util/KeyCode';
 import SelectTrigger from './SelectTrigger';
 import SingleSelector from './Selector/SingleSelector';
 import MultipleSelector from './Selector/MultipleSelector';
-import SinglePopup from './Popup/SinglePopup';
-import MultiplePopup from './Popup/MultiplePopup';
 
 import { SHOW_ALL, SHOW_PARENT, SHOW_CHILD } from './strategies';
 import BaseMixin from '../../_util/BaseMixin';
@@ -58,6 +56,7 @@ import {
   getPropsData,
   findDOMNode,
 } from '../../_util/props-util';
+import BasePopup from './Popup/MultiplePopup';
 function getWatch(keys = []) {
   const watch = {};
   keys.forEach(k => {
@@ -1092,8 +1091,7 @@ const Select = defineComponent({
       ref: this.setPopupRef,
     };
 
-    const Popup = isMultiple ? MultiplePopup : SinglePopup;
-    const $popup = <Popup {...popupProps} __propsSymbol__={[]} />;
+    const $popup = <BasePopup {...popupProps} __propsSymbol__={[]} />;
 
     const Selector = isMultiple ? MultipleSelector : SingleSelector;
     const $selector = <Selector {...passProps} isMultiple={isMultiple} ref={this.selectorRef} />;

components/vc-tree-select/src/Selector/MultipleSelector/index.jsx

@@ -23,7 +23,6 @@ const MultipleSelector = {
     ...SearchInput.props,
     selectorValueList: PropTypes.array,
     disabled: PropTypes.looseBool,
-    searchValue: PropTypes.string,
     labelInValue: PropTypes.looseBool,
     maxTagCount: PropTypes.number,
     maxTagPlaceholder: PropTypes.any,
@@ -142,11 +141,9 @@ const MultipleSelector = {
 
       selectedValueNodes.push(
           <SearchInput
-            {...{
-              ...this.$props,
-              ...this.$attrs,
-              needAlign: true,
-            }}
+            key="SearchInput"
+            {...this.$props}
+            {...this.$attrs}
             ref={this.inputRef}
           >
             {children}

components/vc-tree-select/src/Selector/SingleSelector.jsx

@@ -2,6 +2,7 @@ import generateSelector, { selectorPropTypes } from '../Base/BaseSelector';
 import { toTitle } from '../util';
 import { getOptionProps } from '../../../_util/props-util';
 import { createRef } from '../util';
+import SearchInput from '../SearchInput';
 const Selector = generateSelector('single');
 
 const SingleSelector = {
@@ -10,31 +11,61 @@ const SingleSelector = {
   props: selectorPropTypes(),
   created() {
     this.selectorRef = createRef();
+    this.inputRef = createRef();
   },
   methods: {
+    onPlaceholderClick() {
+      this.inputRef.current.focus();
+    },
     focus() {
       this.selectorRef.current.focus();
     },
     blur() {
       this.selectorRef.current.blur();
     },
-    renderSelection() {
-      const { selectorValueList, placeholder, prefixCls } = this.$props;
+    _renderPlaceholder() {
+      const {
+        prefixCls,
+        placeholder,
+        searchPlaceholder,
+        searchValue,
+        selectorValueList,
+      } = this.$props;
 
+      const currentPlaceholder = placeholder || searchPlaceholder;
+
+      if (!currentPlaceholder) return null;
+
+      const hidden = searchValue || selectorValueList.length;
+
+      // [Legacy] Not remove the placeholder
+      return (
+        <span
+          style={{
+            display: hidden ? 'none' : 'block',
+          }}
+          onClick={this.onPlaceholderClick}
+          class={`${prefixCls}-selection-placeholder`}
+        >
+          {currentPlaceholder}
+        </span>
+      );
+    },
+    renderSelection() {
+      const { selectorValueList, prefixCls } = this.$props;
+      const selectedValueNodes = [];
       if (selectorValueList.length) {
         const { label, value } = selectorValueList[0];
-        return (
-          <span key="value" title={toTitle(label)} class={`${prefixCls}-selection-item`}>
-            {label || value}
-          </span>
-        );
-      } else {
-        return (
-          <span key="placeholder" class={`${prefixCls}-selection-placeholder`}>
-            {placeholder}
-          </span>
-        );
+        selectedValueNodes.push(<span key="value" title={toTitle(label)} class={`${prefixCls}-selection-item`}>{label || value}</span>);
       }
+      selectedValueNodes.push(
+        <SearchInput
+          {...this.$props}
+          {...this.$attrs}
+          ref={this.inputRef}
+          isMultiple={false}
+        />);
+      return selectedValueNodes;
     },
   },
 
@@ -43,6 +74,7 @@ const SingleSelector = {
       ...getOptionProps(this),
       ...this.$attrs,
       renderSelection: this.renderSelection,
+      renderPlaceholder: this._renderPlaceholder,
       ref: this.selectorRef,
     };
     return <Selector {...props} />;