Feat: Solved the conflict between the Handle click and drag events of the canvas node #3221 (#8413)

### What problem does this PR solve?

Feat: Solved the conflict between the Handle click and drag events of
the canvas node #3221

### Type of change


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

web/src/pages/agent/canvas/node/dropdown/next-step-dropdown.tsx

@@ -11,16 +11,20 @@ import {
   DropdownMenuLabel,
   DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu';
+import { IModalProps } from '@/interfaces/common';
 import { Operator } from '@/pages/agent/constant';
 import { AgentInstanceContext, HandleContext } from '@/pages/agent/context';
 import OperatorIcon from '@/pages/agent/operator-icon';
-import { PropsWithChildren, useContext } from 'react';
+import { PropsWithChildren, createContext, useContext } from 'react';
 
 type OperatorItemProps = { operators: Operator[] };
 
+const HideModalContext = createContext<IModalProps<any>['showModal']>(() => {});
+
 function OperatorItemList({ operators }: OperatorItemProps) {
   const { addCanvasNode } = useContext(AgentInstanceContext);
   const { nodeId, id, type, position } = useContext(HandleContext);
+  const hideModal = useContext(HideModalContext);
 
   return (
     <ul className="space-y-2">
@@ -34,6 +38,7 @@ function OperatorItemList({ operators }: OperatorItemProps) {
               id,
               position,
             })}
+            onSelect={() => hideModal?.()}
           >
             <OperatorIcon name={x}></OperatorIcon>
             {x}
@@ -95,16 +100,21 @@ function AccordionOperators() {
   );
 }
 
-export function NextStepDropdown({ children }: PropsWithChildren) {
+export function NextStepDropdown({
+  children,
+  hideModal,
+}: PropsWithChildren & IModalProps<any>) {
   return (
-    <DropdownMenu>
+    <DropdownMenu open onOpenChange={hideModal}>
       <DropdownMenuTrigger asChild>{children}</DropdownMenuTrigger>
       <DropdownMenuContent
         onClick={(e) => e.stopPropagation()}
         className="w-[300px] font-semibold"
       >
         <DropdownMenuLabel>Next Step</DropdownMenuLabel>
+        <HideModalContext.Provider value={hideModal}>
           <AccordionOperators></AccordionOperators>
+        </HideModalContext.Provider>
       </DropdownMenuContent>
     </DropdownMenu>
   );

web/src/pages/agent/canvas/node/handle.tsx

@@ -1,3 +1,4 @@
+import { useSetModalState } from '@/hooks/common-hooks';
 import { cn } from '@/lib/utils';
 import { Handle, HandleProps } from '@xyflow/react';
 import { Plus } from 'lucide-react';
@@ -10,6 +11,8 @@ export function CommonHandle({
   nodeId,
   ...props
 }: HandleProps & { nodeId: string }) {
+  const { visible, hideModal, showModal } = useSetModalState();
+
   const value = useMemo(
     () => ({
       nodeId,
@@ -22,7 +25,6 @@ export function CommonHandle({
 
   return (
     <HandleContext.Provider value={value}>
-      <NextStepDropdown>
       <Handle
         {...props}
         className={cn(
@@ -31,11 +33,16 @@ export function CommonHandle({
         )}
         onClick={(e) => {
           e.stopPropagation();
+          showModal();
         }}
       >
         <Plus className="size-3 pointer-events-none" />
-        </Handle>
+        {visible && (
+          <NextStepDropdown hideModal={hideModal}>
+            <span></span>
           </NextStepDropdown>
+        )}
+      </Handle>
     </HandleContext.Provider>
   );
 }

web/src/pages/agent/canvas/node/message-node.tsx

@@ -6,7 +6,7 @@ import { get } from 'lodash';
 import { memo } from 'react';
 import { NodeHandleId } from '../../constant';
 import { CommonHandle } from './handle';
-import { LeftHandleStyle, RightHandleStyle } from './handle-icon';
+import { LeftHandleStyle } from './handle-icon';
 import styles from './index.less';
 import NodeHeader from './node-header';
 import { NodeWrapper } from './node-wrapper';
@@ -30,7 +30,7 @@ function InnerMessageNode({
           nodeId={id}
           id={NodeHandleId.End}
         ></CommonHandle>
-        <CommonHandle
+        {/* <CommonHandle
           type="source"
           position={Position.Right}
           isConnectable={isConnectable}
@@ -38,7 +38,7 @@ function InnerMessageNode({
           id={NodeHandleId.Start}
           nodeId={id}
           isConnectableEnd={false}
-        ></CommonHandle>
+        ></CommonHandle> */}
         <NodeHeader
           id={id}
           name={data.name}