improvement(context-menu): gray out undo redo if the stack is empty (#2657)

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/context-menu/pane-context-menu.tsx

@@ -24,6 +24,8 @@ export function PaneContextMenu({
   hasClipboard = false,
   disableEdit = false,
   disableAdmin = false,
+  canUndo = false,
+  canRedo = false,
 }: PaneContextMenuProps) {
   return (
     <Popover open={isOpen} onOpenChange={onClose} variant='secondary' size='sm'>
@@ -40,7 +42,7 @@ export function PaneContextMenu({
         {/* Undo */}
         <PopoverItem
           className='group'
-          disabled={disableEdit}
+          disabled={disableEdit || !canUndo}
           onClick={() => {
             onUndo()
             onClose()
@@ -53,7 +55,7 @@ export function PaneContextMenu({
         {/* Redo */}
         <PopoverItem
           className='group'
-          disabled={disableEdit}
+          disabled={disableEdit || !canRedo}
           onClick={() => {
             onRedo()
             onClose()

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/context-menu/types.ts

@@ -86,4 +86,8 @@ export interface PaneContextMenuProps {
   disableEdit?: boolean
   /** Whether admin actions are disabled (no admin permission) */
   disableAdmin?: boolean
+  /** Whether undo is available */
+  canUndo?: boolean
+  /** Whether redo is available */
+  canRedo?: boolean
 }

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/workflow.tsx

@@ -16,6 +16,7 @@ import ReactFlow, {
 import 'reactflow/dist/style.css'
 import { createLogger } from '@sim/logger'
 import { useShallow } from 'zustand/react/shallow'
+import { useSession } from '@/lib/auth/auth-client'
 import type { OAuthConnectEventDetail } from '@/lib/copilot/tools/client/other/oauth-request-access'
 import type { OAuthProvider } from '@/lib/oauth'
 import { DEFAULT_HORIZONTAL_SPACING } from '@/lib/workflows/autolayout/constants'
@@ -65,6 +66,7 @@ import { useCopilotStore } from '@/stores/panel/copilot/store'
 import { usePanelEditorStore } from '@/stores/panel/editor/store'
 import { useSearchModalStore } from '@/stores/search-modal/store'
 import { useGeneralStore } from '@/stores/settings/general/store'
+import { useUndoRedoStore } from '@/stores/undo-redo'
 import { useVariablesStore } from '@/stores/variables/store'
 import { useWorkflowDiffStore } from '@/stores/workflow-diff/store'
 import { useWorkflowRegistry } from '@/stores/workflows/registry/store'
@@ -232,6 +234,15 @@ const WorkflowContent = React.memo(() => {
 
   const currentWorkflow = useCurrentWorkflow()
 
+  // Undo/redo availability for context menu
+  const { data: session } = useSession()
+  const userId = session?.user?.id || 'unknown'
+  const undoRedoStacks = useUndoRedoStore((s) => s.stacks)
+  const undoRedoKey = activeWorkflowId && userId ? `${activeWorkflowId}:${userId}` : ''
+  const undoRedoStack = (undoRedoKey && undoRedoStacks[undoRedoKey]) || { undo: [], redo: [] }
+  const canUndo = undoRedoStack.undo.length > 0
+  const canRedo = undoRedoStack.redo.length > 0
+
   const { updateNodeDimensions, setDragStartPosition, getDragStartPosition } = useWorkflowStore(
     useShallow((state) => ({
       updateNodeDimensions: state.updateNodeDimensions,
@@ -2892,6 +2903,8 @@ const WorkflowContent = React.memo(() => {
               hasClipboard={hasClipboard()}
               disableEdit={!effectivePermissions.canEdit}
               disableAdmin={!effectivePermissions.canAdmin}
+              canUndo={canUndo}
+              canRedo={canRedo}
             />
           </>
         )}