fix(context-menu): preserve selection when right-clicking selected block (#2991)

* fix(context-menu): preserve selection when right-clicking selected block

* added tsdoc

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/hooks/use-canvas-context-menu.ts

@@ -13,7 +13,11 @@ interface UseCanvasContextMenuProps {
 
 /**
  * Hook for managing workflow canvas context menus.
- * Handles right-click events, menu state, click-outside detection, and block info extraction.
+ *
+ * Handles right-click events on nodes, pane, and selections with proper multi-select behavior.
+ *
+ * @param props - Hook configuration
+ * @returns Context menu state and handlers
  */
 export function useCanvasContextMenu({ blocks, getNodes, setNodes }: UseCanvasContextMenuProps) {
   const [activeMenu, setActiveMenu] = useState<MenuType>(null)
@@ -46,19 +50,29 @@ export function useCanvasContextMenu({ blocks, getNodes, setNodes }: UseCanvasCo
       event.stopPropagation()
 
       const isMultiSelect = event.shiftKey || event.metaKey || event.ctrlKey
-      setNodes((nodes) =>
-        nodes.map((n) => ({
-          ...n,
-          selected: isMultiSelect ? (n.id === node.id ? true : n.selected) : n.id === node.id,
-        }))
-      )
+      const currentSelectedNodes = getNodes().filter((n) => n.selected)
+      const isClickedNodeSelected = currentSelectedNodes.some((n) => n.id === node.id)
 
-      const selectedNodes = getNodes().filter((n) => n.selected)
-      const nodesToUse = isMultiSelect
-        ? selectedNodes.some((n) => n.id === node.id)
-          ? selectedNodes
-          : [...selectedNodes, node]
-        : [node]
+      let nodesToUse: Node[]
+      if (isClickedNodeSelected) {
+        nodesToUse = currentSelectedNodes
+      } else if (isMultiSelect) {
+        nodesToUse = [...currentSelectedNodes, node]
+        setNodes((nodes) =>
+          nodes.map((n) => ({
+            ...n,
+            selected: n.id === node.id ? true : n.selected,
+          }))
+        )
+      } else {
+        nodesToUse = [node]
+        setNodes((nodes) =>
+          nodes.map((n) => ({
+            ...n,
+            selected: n.id === node.id,
+          }))
+        )
+      }
 
       setPosition({ x: event.clientX, y: event.clientY })
       setSelectedBlocks(nodesToBlockInfos(nodesToUse))

apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/use-context-menu.ts

@@ -27,18 +27,13 @@ export function useContextMenu({ onContextMenu }: UseContextMenuProps = {}) {
   const [isOpen, setIsOpen] = useState(false)
   const [position, setPosition] = useState<ContextMenuPosition>({ x: 0, y: 0 })
   const menuRef = useRef<HTMLDivElement>(null)
-  // Used to prevent click-outside dismissal when trigger is clicked
   const dismissPreventedRef = useRef(false)
 
-  /**
-   * Handle right-click event
-   */
   const handleContextMenu = useCallback(
     (e: React.MouseEvent) => {
       e.preventDefault()
       e.stopPropagation()
 
-      // Calculate position relative to viewport
       const x = e.clientX
       const y = e.clientY
 
@@ -50,17 +45,10 @@ export function useContextMenu({ onContextMenu }: UseContextMenuProps = {}) {
     [onContextMenu]
   )
 
-  /**
-   * Close the context menu
-   */
   const closeMenu = useCallback(() => {
     setIsOpen(false)
   }, [])
 
-  /**
-   * Prevent the next click-outside from dismissing the menu.
-   * Call this on pointerdown of a toggle trigger to allow proper toggle behavior.
-   */
   const preventDismiss = useCallback(() => {
     dismissPreventedRef.current = true
   }, [])
@@ -72,7 +60,6 @@ export function useContextMenu({ onContextMenu }: UseContextMenuProps = {}) {
     if (!isOpen) return
 
     const handleClickOutside = (e: MouseEvent) => {
-      // Check if dismissal was prevented (e.g., by toggle trigger's pointerdown)
       if (dismissPreventedRef.current) {
         dismissPreventedRef.current = false
         return
@@ -82,7 +69,6 @@ export function useContextMenu({ onContextMenu }: UseContextMenuProps = {}) {
       }
     }
 
-    // Small delay to prevent immediate close from the same click that opened the menu
     const timeoutId = setTimeout(() => {
       document.addEventListener('click', handleClickOutside)
     }, 0)