✨(component): 多层级菜单支持配置缩进，默认为不缩进，可通过<lay-menu :indent="true">开启

package/component/src/component/menu/index.less

@@ -183,6 +183,7 @@
 .layui-nav-tree .layui-nav-item {
   width: 100%;
   display: block;
+  box-sizing: border-box;
   line-height: 42px;
 }
 
@@ -196,12 +197,6 @@
   padding: 5px 23px 5px 23px;
 }
 
-/* 嵌套垂直导航缩进 */
-.layui-nav-child > .layui-nav-item > div > dl.layui-nav-child > li {
-  box-sizing: border-box;
-  padding-left: 10px;
-}
-
 .layui-nav-tree .layui-nav-item * {
   color: rgba(255, 255, 255, 0.7);
 }

package/component/src/component/menu/index.vue

@@ -18,6 +18,7 @@ export interface LayMenuProps {
   level?: boolean | string;
   collapse?: boolean | string;
   collapseTransition?: boolean | string;
+  indent?: boolean | string; // 菜单栏是否缩进
 }
 
 const emit = defineEmits([
@@ -36,6 +37,7 @@ const props = withDefaults(defineProps<LayMenuProps>(), {
   level: true,
   collapse: false,
   collapseTransition: true,
+  indent: false,
 });
 
 const isTree: ComputedRef<boolean> = computed(() => props.tree);
@@ -68,6 +70,15 @@ const selectedKey = computed({
   },
 });
 
+const indent = computed({
+  get() {
+    return props.indent;
+  },
+  set(val) {
+    // emit("update:indent", val);
+  },
+});
+
 watch(
   () => props.collapse,
   () => {
@@ -87,6 +98,7 @@ provide("openKeys", openKeys);
 provide("isCollapse", isCollapse);
 provide("isCollapseTransition", isCollapseTransition);
 provide("menuTheme", menuTheme);
+provide("indent", indent);
 </script>
 
 <template>

package/component/src/component/menu/utils.ts

@@ -0,0 +1,17 @@
+// 处理菜单栏缩进
+export function indentHandle(obj: {
+  indent: boolean | string;
+  level: number;
+  basePadding?: number;
+}) {
+  const { indent, level, basePadding = 0 } = obj;
+  const least: number = level - 1; // 第一层不缩进
+  if (indent && least > 0) {
+    const px =
+      typeof indent === "boolean"
+        ? `${basePadding + 10 * least}px` // css样式表对<a>设定了23基础边距
+        : indent.replace(/\d+/g, (s) => (basePadding + least * +s).toString());
+    return `padding-left: ${px}`;
+  }
+  return "";
+}

package/component/src/component/menuItem/index.vue

@@ -8,6 +8,7 @@ export default {
 import { computed, ComputedRef, inject, ref, Ref, useSlots } from "vue";
 import { DropdownContext, dropdownInjectionKey } from "../dropdown/interface";
 import useLevel from "../menu/useLevel";
+import { indentHandle } from "../menu/utils";
 import LayTooltip from "../tooltip/index.vue";
 
 export interface LayMenuItemProps {
@@ -22,6 +23,7 @@ const selectedKey: Ref<string> = inject("selectedKey") as Ref<string>;
 const isTree = inject("isTree") as ComputedRef<boolean>;
 const isCollapse = inject("isCollapse") as ComputedRef<boolean | string>;
 const theme = inject("menuTheme") as Ref<string>;
+const indent = inject("indent") as Ref<string | boolean>;
 const dropdownCtx = inject<DropdownContext | undefined>(
   dropdownInjectionKey,
   undefined
@@ -44,6 +46,7 @@ const needTooltip = computed(
   <li
     class="layui-nav-item"
     :class="[selectedKey === id ? 'layui-this' : '']"
+    :style="isTree && indentHandle({ indent, level })"
     @click="selectHandle()"
   >
     <template v-if="needTooltip">

package/component/src/component/subMenu/index.vue

@@ -8,6 +8,7 @@ export default {
 import { computed, inject, ref, Ref, useSlots, watchEffect } from "vue";
 import LayTransition from "../transition/index.vue";
 import SubMenuPopup from "./SubMenuPopup.vue";
+import { indentHandle } from "../menu/utils";
 import { provideLevel, default as useLevel } from "../menu/useLevel";
 
 export interface LaySubMenuProps {
@@ -22,6 +23,7 @@ const { level } = useLevel();
 const isTree: Ref<boolean> = inject("isTree") as Ref<boolean>;
 const selectedKey: Ref<string> = inject("selectedKey") as Ref<string>;
 const openKeys: Ref<string[]> = inject("openKeys") as Ref<string[]>;
+const indent = inject("indent") as Ref<string | boolean>;
 const isCollapse: Ref<boolean | string> = inject("isCollapse") as Ref<
   boolean | string
 >;
@@ -70,7 +72,17 @@ const openHandle = function () {
 
 <template>
   <li v-if="!needPopup" class="layui-nav-item">
-    <a href="javascript:void(0)" @click="openHandle()">
+    <a
+      href="javascript:void(0)"
+      @click="openHandle()"
+      :style="
+        indentHandle({
+          indent,
+          level,
+          basePadding: 23,
+        })
+      "
+    >
       <!-- 图标 -->
       <i v-if="slots.icon" class="layui-sub-menu-icon">
         <slot name="icon"></slot>