fix(comp:tabs): offset error when setting selectedKey

packages/components/tabs/demo/Scroll.vue

@@ -13,7 +13,7 @@
       <IxTab v-for="panel in panels" :key="panel" :title="'Tab ' + panel"> Content of Tab {{ panel }} </IxTab>
     </IxTabs>
     <IxSpace align="center">
-      <IxButton @click="onOpen">addTab</IxButton>
+      <IxButton @click="addTab">addTab</IxButton>
       <IxButton @click="closeTab">closeTab</IxButton>
       移动到第几个：<IxInputNumber v-model:value="selectedKey" :max="20" :min="1"></IxInputNumber>
     </IxSpace>
@@ -23,13 +23,17 @@
 <script setup lang="ts">
 import { ref } from 'vue'
 
-const selectedKey = ref(1)
+const selectedKey = ref(7)
 
-const panels = ref([1, 2, 3])
-const onOpen = () => {
-  panels.value.push((panels.value[panels.value.length - 1] || 0) + 1)
+const panels = ref([1, 2, 3, 4, 5, 6, 7])
+const addTab = () => {
+  const key = (panels.value[panels.value.length - 1] || 0) + 1
+  panels.value.push(key)
+  selectedKey.value = key
 }
 const closeTab = () => {
   panels.value.pop()
+  const key = panels.value[panels.value.length - 1]
+  selectedKey.value = key
 }
 </script>

packages/components/tabs/src/InternalTabs.tsx

@@ -89,14 +89,33 @@ export default defineComponent({
 
     const [navOffset, setNavOffset] = useState(0)
     const [barStyle, setBarStyle] = useState<CSSProperties>({})
-    const { navSize, navWrapperSize, navPreNextSize, selectedElSize, syncNavElSize, syncSelectedElSize } =
-      useNavRelatedElSize(isHorizontal, navWrapperElRef, navElRef, navPreElRef, selectedElRef)
-    const { selectedElOffset, syncSelectedElOffset } = useSelectedElOffset(isHorizontal, navPreNextSize, selectedElRef)
+    const {
+      navSize,
+      navWrapperSize,
+      navPreNextSize,
+      selectedElSize,
+      setNavElSize,
+      setSelectedElSize,
+      setNavPreNextElSize,
+    } = useNavRelatedElSize(isHorizontal, navWrapperElRef, navElRef, navPreElRef, selectedElRef)
+    const { selectedElOffset, setSelectedElOffset } = useSelectedElOffset(isHorizontal, navPreNextSize, selectedElRef)
 
     const hasScroll = computed(() => {
-      return navSize.value! > navWrapperSize.value
+      return navSize.value > navWrapperSize.value
     })
 
+    watch(
+      hasScroll,
+      () => {
+        setNavPreNextElSize()
+        updateNavBarStyle()
+        updateSelectedOffset()
+      },
+      {
+        flush: 'post',
+      },
+    )
+
     const selectedElVisibleSize = useSelectedElVisibleSize(navWrapperSize, selectedElOffset, navOffset)
 
     // 处理存在滚动状态下，滚动到被选中的tab，并修正其位置
@@ -135,6 +154,14 @@ export default defineComponent({
       })
     })
 
+    const navWrapperClass = computed(() => {
+      const prefixCls = mergedPrefixCls.value
+      return normalizeClass({
+        [`${prefixCls}-nav-wrapper`]: true,
+        [`${prefixCls}-nav-wrapper-has-scroll`]: hasScroll.value,
+      })
+    })
+
     const curryNavPreNextClasses = curry(useNavPreNextClasses)(props, mergedPrefixCls)
     const navPreClasses = curryNavPreNextClasses('pre', preReached)
     const navNextClasses = curryNavPreNextClasses('next', nextReached)
@@ -203,9 +230,10 @@ export default defineComponent({
     }
 
     const update = () => {
-      syncNavElSize()
-      syncSelectedElSize()
-      syncSelectedElOffset()
+      setNavElSize()
+      setNavPreNextElSize()
+      setSelectedElSize()
+      setSelectedElOffset()
       updateNavBarStyle()
       judgePreNextStatus()
     }
@@ -239,19 +267,11 @@ export default defineComponent({
 
     watch(
       navSize,
-      (val, oldSize) => {
+      (currentSize, oldSize) => {
         let offset = navOffset.value
-        const currentSize = val!
-        if (currentSize > oldSize && isAddTabs) {
-          offset += currentSize - oldSize
-          if (hasScroll.value) {
-            setNavOffset(offset)
-          }
-        } else if (currentSize < oldSize && !isAddTabs) {
+        if (currentSize < oldSize && !isAddTabs) {
           offset += currentSize - oldSize
-          if (offset >= 0) {
-            setNavOffset(offset)
-          }
+          setNavOffset(offset > 0 ? offset : 0)
         }
       },
       {
@@ -271,8 +291,9 @@ export default defineComponent({
     watch(
       selectedElRef,
       () => {
-        syncSelectedElSize()
-        syncSelectedElOffset()
+        setSelectedElSize()
+        setSelectedElOffset()
+        setSelectedElOffset()
         updateSelectedOffset()
         updateNavBarStyle()
       },
@@ -305,12 +326,7 @@ export default defineComponent({
 
       return (
         <div class={classes.value}>
-          <div
-            class={`${mergedPrefixCls.value}-nav-wrapper ${
-              hasScroll.value ? `${mergedPrefixCls.value}-nav-wrapper-has-scroll` : ''
-            }`}
-            ref={navWrapperElRef}
-          >
+          <div class={navWrapperClass.value} ref={navWrapperElRef}>
             {hasScroll.value && (
               <IxIcon
                 class={navPreClasses.value}

packages/components/tabs/src/composables/useOffset.ts

@@ -11,7 +11,7 @@ import { useState } from '@idux/cdk/utils'
 
 export interface Offset {
   selectedElOffset: ComputedRef<number>
-  syncSelectedElOffset: () => void
+  setSelectedElOffset: () => void
 }
 
 export function useSelectedElOffset(
@@ -26,13 +26,13 @@ export function useSelectedElOffset(
     () => (isHorizontal.value ? selectedLeft.value : selectedTop.value) + navPreNextSize.value,
   )
 
-  const syncSelectedElOffset = () => {
+  const setSelectedElOffset = () => {
     setSelectedLeft(selectedElRef.value?.offsetLeft ?? 0)
     setSelectedTop(selectedElRef.value?.offsetTop ?? 0)
   }
 
   return {
     selectedElOffset,
-    syncSelectedElOffset,
+    setSelectedElOffset,
   }
 }

packages/components/tabs/src/composables/useSize.ts

@@ -7,7 +7,7 @@
 
 import type { IconInstance } from '@idux/components/icon'
 
-import { type ComputedRef, type Ref, computed, watchEffect } from 'vue'
+import { type ComputedRef, type Ref, computed } from 'vue'
 
 import { useState } from '@idux/cdk/utils'
 
@@ -16,8 +16,9 @@ export interface NavRelatedElSize {
   navWrapperSize: ComputedRef<number>
   navPreNextSize: ComputedRef<number>
   selectedElSize: ComputedRef<number>
-  syncNavElSize: () => void
-  syncSelectedElSize: () => void
+  setNavElSize: () => void
+  setSelectedElSize: () => void
+  setNavPreNextElSize: () => void
 }
 
 export function useNavRelatedElSize(
@@ -43,32 +44,32 @@ export function useNavRelatedElSize(
   const selectedElSize = computed(() => (isHorizontal.value ? selectedWidth.value : selectedHeight.value))
 
   // dom 的size无法响应式获取，只能手动获取
-  const syncNavElSize = () => {
+  const setNavElSize = () => {
     setNavWrapperWidth(navWrapperElRef.value?.offsetWidth ?? 0)
     setNavWrapperHeight(navWrapperElRef.value?.offsetHeight ?? 0)
 
     setNavWidth(navElRef.value?.offsetWidth ?? 0)
     setNavHeight(navElRef.value?.offsetHeight ?? 0)
   }
 
-  const syncSelectedElSize = () => {
+  const setSelectedElSize = () => {
     setSelectedWidth(selectedElRef.value?.offsetWidth ?? 0)
     setSelectedHeight(selectedElRef.value?.offsetHeight ?? 0)
   }
 
-  // 向前、向后按钮是动态渲染的，所以可以使用 watchEffect 获取其size
-  watchEffect(() => {
+  const setNavPreNextElSize = () => {
     setNavPreNextWidth(navPreElRef.value?.$el.offsetWidth ?? 0)
     setNavPreNextHeight(navPreElRef.value?.$el.offsetHeight ?? 0)
-  })
+  }
 
   return {
     navSize,
     navWrapperSize,
     navPreNextSize,
     selectedElSize,
-    syncNavElSize,
-    syncSelectedElSize,
+    setNavElSize,
+    setSelectedElSize,
+    setNavPreNextElSize,
   }
 }