fix: formkit select component not emitting event or updating selection on value change (#6602)

#### What type of PR is this?

/kind bug
/area ui
/milestone 2.20.x

#### What this PR does / why we need it:

重新修改 formkit select 初始化值的监听方式，用于当 value 发生变化时，使选项值可以发生变化。

另外在更新数据时，如果数据发生变化，则发出 `onChange` 事件。

> 需要注意的是，通过 v-modal 传入默认值，再将此值改为 `undefined` 时无法触发 `watch` 及 formkit 的 `input` 事件，原因暂时未知，将此值设置为 `""` 即可正常触发。

#### How to test it?

由于此 PR 改动了初始化的方式，因此需要全量测试所有使用 `Select` 组件的位置。包括多选与单选，本地源与远程源。确保功能符合预期。

#### Which issue(s) this PR fixes:

Fixes #6594 

#### Does this PR introduce a user-facing change?
```release-note
解决 Formkit Select 组件在值变更时不会发出事件及修改选项值的问题。
```

ui/src/formkit/inputs/select/SelectContainer.vue

@@ -2,18 +2,18 @@
 import { IconArrowDownLine, IconCloseCircle } from "@halo-dev/components";
 import {
   computed,
+  defineEmits,
   nextTick,
   onMounted,
-  ref,
-  defineEmits,
-  type PropType,
   onUnmounted,
+  ref,
+  type PropType,
 } from "vue";
 
-import SelectSelector from "./SelectSelector.vue";
+import { Dropdown } from "floating-vue";
 import MultipleSelectSelector from "./MultipleSelectSelector.vue";
 import SelectDropdownContainer from "./SelectDropdownContainer.vue";
-import { Dropdown } from "floating-vue";
+import SelectSelector from "./SelectSelector.vue";
 
 const props = defineProps({
   multiple: {
@@ -95,7 +95,7 @@ const inputRef = ref<HTMLInputElement | null>();
 const searchKeyword = ref<string>("");
 const isDropdownVisible = ref<boolean>(false);
 const selectedOptions = computed({
-  get: () => props.selected,
+  get: () => [...props.selected],
   set: (value) => {
     emit("update", value);
   },

ui/src/formkit/inputs/select/SelectMain.vue

@@ -45,7 +45,7 @@ export interface SelectProps {
   remoteOptimize?: boolean;
 
   /**
-   * Allows the creation of new options, only available in local mode.
+   * Allows the creation of new options, only available in local mode. Default is false.
    */
   allowCreate?: boolean;
 
@@ -209,7 +209,7 @@ const initSelectProps = () => {
   selectProps.maxCount = nodeProps.maxCount ?? NaN;
   selectProps.placeholder = nodeProps.placeholder ?? "";
   selectProps.action = nodeProps.action ?? "";
-  selectProps.remoteOptimize = nodeProps.remoteOptimize ?? true;
+  selectProps.remoteOptimize = !isFalse(nodeProps.remoteOptimize, true);
   selectProps.requestOption = {
     ...{
       method: "GET",
@@ -225,12 +225,12 @@ const initSelectProps = () => {
     ...(nodeProps.requestOption ?? {}),
   };
   selectProps.multiple = !isFalse(nodeProps.multiple);
-  selectProps.sortable = !isFalse(nodeProps.sortable);
+  selectProps.sortable = !isFalse(nodeProps.sortable, true);
   selectProps.remote = !isFalse(nodeProps.remote);
   selectProps.allowCreate = !isFalse(nodeProps.allowCreate);
   selectProps.clearable = !isFalse(nodeProps.clearable);
   selectProps.searchable = !isFalse(nodeProps.searchable);
-  selectProps.autoSelect = !isFalse(nodeProps.autoSelect) || true;
+  selectProps.autoSelect = !isFalse(nodeProps.autoSelect, true);
   if (selectProps.remote) {
     if (!nodeProps.remoteOption) {
       throw new Error("remoteOption is required when remote is true.");
@@ -543,14 +543,25 @@ const getAutoSelectedOption = ():
   });
 };
 
-const stopSelectedWatch = watch(
-  () => [options.value, props.context.value],
-  async () => {
-    if (options.value) {
+watch(
+  () => props.context.value,
+  async (newValue) => {
+    const selectedValues = selectOptions.value?.map((item) => item.value) || [];
+    if (selectedValues.length > 0 && selectedValues.includes(newValue)) {
+      return;
+    }
+    const selectedOption = await fetchSelectedOptions();
+    selectOptions.value = selectedOption;
+  }
+);
+
+watch(
+  () => options.value,
+  async (newOptions) => {
+    if (newOptions && newOptions.length > 0) {
       const selectedOption = await fetchSelectedOptions();
       if (selectedOption) {
         selectOptions.value = selectedOption;
-        return;
       }
       const isAutoSelect =
         selectProps.autoSelect &&
@@ -562,12 +573,12 @@ const stopSelectedWatch = watch(
         // Automatically select the first option when the selected value is empty.
         const autoSelectedOption = getAutoSelectedOption();
         if (autoSelectedOption) {
-          selectOptions.value = [autoSelectedOption];
-          handleUpdate(selectOptions.value);
+          handleUpdate([autoSelectedOption]);
         }
       }
     }
-  }
+  },
+  { once: true }
 );
 
 // When attr options are processed asynchronously, it is necessary to monitor
@@ -581,14 +592,27 @@ watch(
   }
 );
 
-const handleSelectedUpdate = (
-  value: Array<{ label: string; value: string }>
-) => {
-  stopSelectedWatch();
-  handleUpdate(value);
+const handleUpdate = async (value: Array<{ label: string; value: string }>) => {
+  const oldSelectValue = selectOptions.value;
+  if (
+    oldSelectValue &&
+    value.length === oldSelectValue.length &&
+    value.every((item, index) => item.value === oldSelectValue[index].value)
+  ) {
+    return;
+  }
+  const newValue = value.map((item) => {
+    return {
+      label: item.label,
+      value: item.value,
+    };
+  });
+  handleSetNodeValue(newValue);
+  await props.context.node.settled;
+  props.context.attrs.onChange?.(newValue);
 };
 
-const handleUpdate = (value: Array<{ label: string; value: string }>) => {
+const handleSetNodeValue = (value: Array<{ label: string; value: string }>) => {
   const values = value.map((item) => item.value);
   selectOptions.value = value;
   if (selectProps.multiple) {
@@ -725,7 +749,7 @@ const handleNextPage = async () => {
     :clearable="selectProps.clearable"
     :searchable="selectProps.searchable"
     :auto-select="selectProps.autoSelect"
-    @update="handleSelectedUpdate"
+    @update="handleUpdate"
     @search="handleSearch"
     @load-more="handleNextPage"
   />

ui/src/formkit/inputs/select/isFalse.ts

@@ -1,3 +1,7 @@
-export const isFalse = (value: string | boolean | undefined | null) => {
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export const isFalse = (value: any, onlyBoolean = false) => {
+  if (onlyBoolean) {
+    return [false, "false"].includes(value);
+  }
   return [undefined, null, "false", false].includes(value);
 };