Feat: Bind options to the parser operator form. #9869 (#10069)

### What problem does this PR solve?

Feat: Bind options to the parser operator form. #9869

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/data-flow/form/parser-form/index.tsx

@@ -1,13 +1,20 @@
-import { FormContainer } from '@/components/form-container';
 import { SelectWithSearch } from '@/components/originui/select-with-search';
 import { RAGFlowFormItem } from '@/components/ragflow-form';
 import { BlockButton, Button } from '@/components/ui/button';
 import { Form } from '@/components/ui/form';
+import { Separator } from '@/components/ui/separator';
+import { cn } from '@/lib/utils';
 import { buildOptions } from '@/utils/form';
 import { zodResolver } from '@hookform/resolvers/zod';
+import { useHover } from 'ahooks';
 import { Trash2 } from 'lucide-react';
-import { memo, useCallback } from 'react';
-import { useFieldArray, useForm } from 'react-hook-form';
+import { memo, useCallback, useRef } from 'react';
+import {
+  UseFieldArrayRemove,
+  useFieldArray,
+  useForm,
+  useFormContext,
+} from 'react-hook-form';
 import { z } from 'zod';
 import { FileType, initialParserValues } from '../../constant';
 import { useFormValues } from '../../hooks/use-form-values';
@@ -34,6 +41,51 @@ const FileFormatWidgetMap = {
   [FileType.Image]: ImageFormFields,
 };
 
+type ParserItemProps = {
+  name: string;
+  index: number;
+  fieldLength: number;
+  remove: UseFieldArrayRemove;
+};
+
+function ParserItem({ name, index, fieldLength, remove }: ParserItemProps) {
+  const form = useFormContext();
+  const ref = useRef(null);
+  const isHovering = useHover(ref);
+
+  const prefix = `${name}.${index}`;
+  const fileFormat = form.getValues(`${name}.${index}.fileFormat`);
+
+  const Widget =
+    fileFormat && fileFormat in FileFormatWidgetMap
+      ? FileFormatWidgetMap[fileFormat as keyof typeof FileFormatWidgetMap]
+      : OutputFormatFormField;
+  return (
+    <section
+      className={cn('space-y-5 p-5 rounded-md', {
+        'bg-state-error-5': isHovering,
+      })}
+    >
+      <div className="flex justify-between items-center">
+        <span className="text-text-primary text-sm">Parser {index}</span>
+        {index > 0 && (
+          <Button variant={'ghost'} onClick={() => remove(index)} ref={ref}>
+            <Trash2 />
+          </Button>
+        )}
+      </div>
+      <RAGFlowFormItem
+        name={buildFieldNameWithPrefix(`fileFormat`, prefix)}
+        label="File Formats"
+      >
+        <SelectWithSearch options={FileFormatOptions}></SelectWithSearch>
+      </RAGFlowFormItem>
+      <Widget prefix={prefix} fileType={fileFormat as FileType}></Widget>
+      {index < fieldLength - 1 && <Separator />}
+    </section>
+  );
+}
+
 export const FormSchema = z.object({
   parser: z.array(
     z.object({
@@ -67,35 +119,22 @@ const ParserForm = ({ node }: INextOperatorForm) => {
 
   return (
     <Form {...form}>
-      {fields.map((field, index) => {
-        const prefix = `${name}.${index}`;
-        const fileFormat = form.getValues(`${name}.${index}.fileFormat`);
-
-        const Widget =
-          fileFormat && fileFormat in FileFormatWidgetMap
-            ? FileFormatWidgetMap[
-                fileFormat as keyof typeof FileFormatWidgetMap
-              ]
-            : OutputFormatFormField;
-        return (
-          <FormContainer key={field.id}>
-            <div className="flex justify-between items-center">
-              <span className="text-text-primary text-sm">Parser {index}</span>
-              <Button variant={'ghost'} onClick={() => remove(index)}>
-                <Trash2 />
-              </Button>
-            </div>
-            <RAGFlowFormItem
-              name={buildFieldNameWithPrefix(`fileFormat`, prefix)}
-              label="File Formats"
-            >
-              <SelectWithSearch options={FileFormatOptions}></SelectWithSearch>
-            </RAGFlowFormItem>
-            <Widget prefix={prefix}></Widget>
-          </FormContainer>
-        );
-      })}
-      <BlockButton onClick={add}>Add Parser</BlockButton>
+      <form className="px-5">
+        {fields.map((field, index) => {
+          return (
+            <ParserItem
+              key={field.id}
+              name={name}
+              index={index}
+              fieldLength={fields.length}
+              remove={remove}
+            ></ParserItem>
+          );
+        })}
+        <BlockButton onClick={add} type="button">
+          Add Parser
+        </BlockButton>
+      </form>
       <div className="p-5">
         <Output list={outputList}></Output>
       </div>