копирование элемента по ctrl+c и ctrl+v

src/component/TemplateManager/ElementConstructor.tsx

@@ -578,6 +578,15 @@ export const ElementConstructor: React.FC<ElementConstructorProps> = ({
     resetForm()
   }
 
+  const handleElementCopy = (element: Omit<TemplateElement, 'id'>) => {
+    const newElement: TemplateElement = {
+      ...element,
+      id: Date.now().toString(),
+      order: elements.length,
+    }
+    onElementAdd(newElement)
+  }
+
   return (
     <div className="flex h-full w-full flex-col bg-background">
       <ElementFormulaBar
@@ -611,6 +620,7 @@ export const ElementConstructor: React.FC<ElementConstructorProps> = ({
           onElementDelete={handleDeleteAndSelect}
           onLayoutSettingsChange={onLayoutSettingsChange || (() => {})}
           onElementEdit={handleEditElement}
+          onElementAdd={handleElementCopy}
         />
       </div>