I'm looking to create a low-code style view where users can:
Greetings from Syncfusion support.
From your shared details, we understand that you want to perform a drag-and-drop action based on a particular condition. Similar like, we have documented the TreeView sample in the Angular platform. Here, we have restricted the files(tree node) drag-and-drop action within the folders only. Check out the below link, to know more about the TreeView drag and drop action.
TreeView drag-and-drop : https://ej2.syncfusion.com/angular/documentation/treeview/drag-and-drop
Check out the shared documentation sample at your end and let us know if the provided sample is suitable for your requirement. Please get back to us if you need any further assistance.
Leo Lavanya Dhanaraj