{"version":3,"file":"option-group.mjs","names":[],"sources":["../../../../../../packages/components/select/src/option-group.vue"],"sourcesContent":["<template>\n  <ul v-show=\"visible\" ref=\"groupRef\" :class=\"ns.be('group', 'wrap')\">\n    <li :class=\"ns.be('group', 'title')\">{{ label }}</li>\n    <li>\n      <ul :class=\"ns.b('group')\">\n        <slot />\n      </ul>\n    </li>\n  </ul>\n</template>\n\n<script lang=\"ts\">\nimport {\n  computed,\n  defineComponent,\n  getCurrentInstance,\n  isVNode,\n  onMounted,\n  provide,\n  reactive,\n  ref,\n  toRefs,\n} from 'vue'\nimport { useMutationObserver } from '@vueuse/core'\nimport { ensureArray, isArray } from '@element-plus/utils'\nimport { useNamespace } from '@element-plus/hooks'\nimport { selectGroupKey } from './token'\n\nimport type { Component, VNode, VNodeArrayChildren } from 'vue'\nimport type { OptionInternalInstance, OptionPublicInstance } from './type'\n\nexport default defineComponent({\n  name: 'ElOptionGroup',\n  componentName: 'ElOptionGroup',\n\n  props: {\n    /**\n     * @description name of the group\n     */\n    label: String,\n    /**\n     * @description whether to disable all options in this group\n     */\n    disabled: Boolean,\n  },\n  setup(props) {\n    const ns = useNamespace('select')\n    const groupRef = ref<HTMLElement>()\n    const instance = getCurrentInstance()!\n    const children = ref<OptionPublicInstance[]>([])\n\n    provide(\n      selectGroupKey,\n      reactive({\n        ...toRefs(props),\n      })\n    )\n\n    const visible = computed(() =>\n      children.value.some((option) => option.visible === true)\n    )\n\n    const isOption = (\n      node: VNode\n    ): node is VNode & { component: OptionInternalInstance } =>\n      (node.type as Component).name === 'ElOption' && !!node.component?.proxy\n\n    // get all instances of options\n    const flattedChildren = (node: VNode | VNodeArrayChildren) => {\n      const nodes = ensureArray(node) as VNode[] | VNodeArrayChildren\n      const children: OptionPublicInstance[] = []\n\n      nodes.forEach((child) => {\n        if (!isVNode(child)) return\n\n        if (isOption(child)) {\n          children.push(child.component.proxy)\n        } else if (isArray(child.children) && child.children.length) {\n          children.push(...flattedChildren(child.children))\n        } else if (child.component?.subTree) {\n          children.push(...flattedChildren(child.component.subTree))\n        }\n      })\n\n      return children\n    }\n\n    const updateChildren = () => {\n      children.value = flattedChildren(instance.subTree)\n    }\n\n    onMounted(() => {\n      updateChildren()\n    })\n\n    useMutationObserver(groupRef, updateChildren, {\n      attributes: true,\n      subtree: true,\n      childList: true,\n    })\n\n    return {\n      groupRef,\n      visible,\n      ns,\n    }\n  },\n})\n</script>\n"],"mappings":";;;;;CACE,OAAA,gBAAA,WAAA,EAAA,mBAOK,MAAA;EAPgB,KAAI;EAAY,OAAK,eAAE,KAAA,GAAG,GAAE,SAAA,OAAA,CAAA;KAC/C,mBAAqD,MAAA,EAAhD,OAAK,eAAE,KAAA,GAAG,GAAE,SAAA,QAAA,CAAA,EAAuB,EAAA,gBAAA,KAAA,MAAK,EAAA,EAAA,EAC7C,mBAIK,MAAA,MAAA,CAHH,mBAEK,MAAA,EAFA,OAAK,eAAE,KAAA,GAAG,EAAC,QAAA,CAAA,EAAA,EAAA,CACd,WAAQ,KAAA,QAAA,UAAA,CAAA,EAAA,EAAA,CAAA,CAAA,CAAA,EAAA,EAAA,GAAA,CAJF,CAAA,OAAA,KAAA,QAAO,CAAA,CAAA"}