feat: llm node add context

web/src/views/Workflow/components/Properties/MappingList/index.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import { useTranslation } from 'react-i18next'
-import { MinusCircleOutlined, PlusOutlined } from '@ant-design/icons';
+import { MinusCircleOutlined } from '@ant-design/icons';
 import { Button, Form, Input, Space } from 'antd';
 
 interface MappingListProps {
@@ -33,8 +33,8 @@ const MappingList: React.FC<MappingListProps> = ({ name }) => {
               </Space>
             ))}
             <Form.Item>
-              <Button type="dashed" onClick={() => add()} block icon={<PlusOutlined />}>
-                Add field
+              <Button type="dashed" onClick={() => add()} block>
+                + {t('common.add')}
               </Button>
             </Form.Item>
           </>

web/src/views/Workflow/components/Properties/MessageEditor.tsx

@@ -1,4 +1,4 @@
-import { type FC } from 'react';
+import { type FC, useMemo } from 'react';
 import { useTranslation } from 'react-i18next'
 import { Input, Form, Space, Button, Row, Col, Select, type FormListOperation } from 'antd';
 import { MinusCircleOutlined } from '@ant-design/icons';
@@ -31,6 +31,24 @@ const MessageEditor: FC<TextareaProps> = ({
   const form = Form.useFormInstance();
   const values = form.getFieldsValue()
 
+  // 检查是否已经使用了context变量，将已使用的context设置为disabled
+  const processedOptions = useMemo(() => {
+    if (!isArray || !values[parentName]) return options;
+    
+    // 获取所有消息内容
+    const allContents = values[parentName]
+      .map((msg: any) => msg.content || '')
+      .join(' ');
+    
+    // 将已使用的context变量标记为disabled
+    return options.map(opt => {
+      if (opt.isContext && allContents.includes(opt.value)) {
+        return { ...opt, disabled: true };
+      }
+      return opt;
+    });
+  }, [options, values, parentName, isArray]);
+
   const handleAdd = (add: FormListOperation['add']) => {
     const list = values[parentName];
     const lastRole = list[list.length - 1].role
@@ -80,7 +98,7 @@ const MessageEditor: FC<TextareaProps> = ({
                       name={[name, 'content']}
                       noStyle
                     >
-                      <Editor placeholder={placeholder} options={options} />
+                      <Editor placeholder={placeholder} options={processedOptions} />
                     </Form.Item>
                   </Space>
                 )
@@ -104,7 +122,7 @@ const MessageEditor: FC<TextareaProps> = ({
             name={parentName}
             noStyle
           >
-            <Editor placeholder={placeholder} options={options} />
+            <Editor placeholder={placeholder} options={processedOptions} />
           </Form.Item>
         </Space>
         }

web/src/views/Workflow/components/Properties/index.tsx

@@ -330,9 +330,30 @@ const Properties: FC<PropertiesProps> = ({
                 }
 
                 if (selectedNode?.data?.type === 'llm' && key === 'messages' && config.type === 'define') {
+                  // 为llm节点且isArray=true时添加context变量支持
+                  let contextVariableList = [...variableList];
+                  const isArrayMode = config.isArray !== false; // 默认为true
+                  
+                  if (isArrayMode) {
+                    const contextKey = `${selectedNode.id}_context`;
+                    const hasContextVariable = contextVariableList.some(v => v.key === contextKey);
+                    
+                    if (!hasContextVariable) {
+                      contextVariableList.unshift({
+                        key: contextKey,
+                        label: 'context',
+                        type: 'variable',
+                        dataType: 'String',
+                        value: `{{context}}`,
+                        nodeData: selectedNode.getData(),
+                        isContext: true,
+                      });
+                    }
+                  }
+                  
                   return (
                     <Form.Item key={key} name={key}>
-                      <MessageEditor options={variableList} parentName={key} />
+                      <MessageEditor options={contextVariableList} parentName={key} />
                     </Form.Item>
                   )
                 }