✨(component): [tab]新增 title 插槽

package/component/src/component/tab/RenderTitle.vue

@@ -0,0 +1,28 @@
+<script lang="ts">
+import { h, PropType, defineComponent } from "vue";
+import { TabData } from "./interface";
+
+export default defineComponent({
+  name: "RenderTitle",
+  props: {
+    tag: {
+      type: String,
+      required: false,
+      default: "span",
+    },
+    tabItemData: {
+      type: Object as PropType<TabData>,
+      required: false,
+    },
+  },
+  setup(props) {
+    return props.tabItemData?.slots?.title
+      ? () =>
+          h(
+            props.tag,
+            props.tabItemData?.slots?.title && props.tabItemData?.slots.title()
+          )
+      : () => props.tabItemData?.title;
+  },
+});
+</script>

package/component/src/component/tab/index.vue

@@ -8,6 +8,7 @@ export default {
 import "./index.less";
 import { LayIcon } from "@layui/icons-vue";
 import tabItem from "../tabItem/index.vue";
+import RenderTitle from "./renderTitle.vue";
 import {
   Component,
   computed,
@@ -21,8 +22,10 @@ import {
   onMounted,
   nextTick,
   CSSProperties,
+  reactive,
 } from "vue";
 import { useResizeObserver } from "@vueuse/core";
+import { TabData, TabInjectKey } from "./interface";
 
 export type tabPositionType = "top" | "bottom" | "left" | "right";
 
@@ -40,6 +43,7 @@ const slot = useSlots();
 const slots = slot.default && slot.default();
 const childrens: Ref<VNode[]> = ref([]);
 const slotsChange = ref(true);
+const tabMap = reactive(new Map<number, TabData>());
 
 const setItemInstanceBySlot = function (nodeList: VNode[]) {
   nodeList?.map((item) => {
@@ -67,6 +71,32 @@ const active = computed({
   },
 });
 
+const tabItems = computed(() => {
+  const tabData: TabData[] = [];
+  childrens.value.forEach((item) => {
+    const tab = tabMap.get(item.props?.id);
+    if (tab) tabData.push(tab);
+  });
+  return tabData;
+});
+
+const addItem = (id: number, data: any) => {
+  tabMap.set(id, data);
+};
+
+const removeItem = (id: number) => {
+  tabMap.delete(id);
+};
+
+provide(
+  TabInjectKey,
+  reactive({
+    active: active,
+    addItem,
+    removeItem,
+  })
+);
+
 const change = function (id: any) {
   if (props.beforeLeave && props.beforeLeave(id) === false) {
     return;
@@ -294,16 +324,16 @@ provide("slotsChange", slotsChange);
           :style="tabBarStyle"
         ></div>
         <li
-          v-for="(children, index) in childrens"
-          :key="children.props?.id"
-          :class="[children.props?.id === active ? 'layui-this' : '']"
-          @click.stop="change(children.props?.id)"
+          v-for="(children, index) in tabItems"
+          :key="children.id"
+          :class="[children.id === active ? 'layui-this' : '']"
+          @click.stop="change(children.id)"
         >
-          {{ children.props?.title }}
+          <RenderTitle :tabItemData="children"></RenderTitle>
           <i
-            v-if="allowClose && children.props?.closable != false"
+            v-if="allowClose && children.closable != false"
             class="layui-icon layui-icon-close layui-unselect layui-tab-close"
-            @click.stop="close(index, children.props?.id)"
+            @click.stop="close(index, children.id)"
           ></i>
         </li>
       </ul>

package/component/src/component/tab/interface.ts

@@ -0,0 +1,16 @@
+import { Slots } from "vue";
+
+export const TabInjectKey = Symbol("layuiTab");
+
+export interface TabData {
+  id: string;
+  title?: string;
+  closable?: string | boolean;
+  slots: Slots;
+}
+
+export interface TabsContext {
+  active: string;
+  addItem: (id: string, data: TabData) => void;
+  removeItem: (id: string) => void;
+}

package/component/src/component/tabItem/index.vue

@@ -5,7 +5,18 @@ export default {
 </script>
 
 <script setup lang="ts">
-import { withDefaults, inject, Ref } from "vue";
+import {
+  withDefaults,
+  inject,
+  Ref,
+  useSlots,
+  getCurrentInstance,
+  computed,
+  reactive,
+  onBeforeUnmount,
+  toRefs,
+} from "vue";
+import { TabInjectKey, TabsContext } from "../tab/interface";
 
 export interface LayTabItemProps {
   id: string;
@@ -17,9 +28,29 @@ const props = withDefaults(defineProps<LayTabItemProps>(), {
   closable: true,
 });
 
+const instance = getCurrentInstance();
+const slots = useSlots();
 const active = inject("active");
 const slotsChange: Ref<boolean> = inject("slotsChange") as Ref<boolean>;
 slotsChange.value = !slotsChange.value;
+const tabsCtx = inject<Partial<TabsContext>>(TabInjectKey, {});
+
+const data = reactive({
+  id: props.id,
+  title: props.title,
+  closable: props.closable,
+  slots: slots,
+});
+
+if (instance?.uid) {
+  tabsCtx.addItem?.(props.id, data);
+}
+
+onBeforeUnmount(() => {
+  if (instance?.uid) {
+    tabsCtx.removeItem?.(props.id);
+  }
+});
 </script>
 
 <template>

package/document-component/src/document/zh-CN/components/tab.md

@@ -36,6 +36,54 @@ export default {
 
 :::
 
+::: title 标题插槽
+:::
+
+::: demo
+
+<template>
+  <lay-tab v-model="current11" :allow-close="true">
+    <lay-tab-item title="选项一" id="1">
+      <template #title>
+        <lay-icon type="layui-icon-console"></lay-icon>
+        <span style="margin-left:10px">选项一</span>
+      </template>
+      <div style="padding:20px">选项一</div>
+    </lay-tab-item>
+    <lay-tab-item title="选项一" id="2">
+      <template #title>
+        <lay-icon type="layui-icon-user"></lay-icon>
+        <span style="margin-left:10px">选项一</span>
+      </template>
+      <div style="padding:20px">选项二</div>
+    </lay-tab-item>
+    <lay-tab-item title="选项一" id="3">
+      <template #title>
+        <lay-icon type="layui-icon-set"></lay-icon>
+        <span style="margin-left:10px">选项一</span>
+      </template>
+      <div style="padding:20px">选项三</div>
+    </lay-tab-item>
+  </lay-tab>
+</template>
+
+<script>
+import { ref } from 'vue'
+
+export default {
+  setup() {
+
+    const current11 = ref("1")
+
+    return {
+      current11
+    }
+  }
+}
+</script>
+
+:::
+
 ::: title 简约模式
 :::