chore(SelectCustom): add emit on open/close (#125)

src/runtime/components/forms/SelectCustom.vue

@@ -84,7 +84,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, computed } from 'vue'
+import { ref, computed, watch } from 'vue'
 import type { PropType, ComponentPublicInstance } from 'vue'
 import { defu } from 'defu'
 import {
@@ -261,7 +261,7 @@ const props = defineProps({
   }
 })
 
-const emit = defineEmits(['update:modelValue'])
+const emit = defineEmits(['update:modelValue', 'open', 'close'])
 
 const popperOptions = computed<PopperOptions>(() => defu({}, props.popperOptions, $ui.selectCustom.popperOptions))
 
@@ -307,6 +307,14 @@ const iconWrapperClass = classNames(
   $ui.selectCustom.icon.trailing.wrapper
 )
 
+watch(container, (value) => {
+  if (value) {
+    emit('open')
+  } else {
+    emit('close')
+  }
+})
+
 function resolveOptionClass ({ active, selected, disabled }: { active: boolean, selected: boolean, disabled?: boolean }) {
   return classNames(
     props.listOptionBaseClass,