As shown in the figure, when I select a line, can the selected line be highlighted from the drawing, instead of simply highlighting or flashing?
In the Logic Circuit sample when the user selects a Link or a Node, it is shown with a shadow. That is because Part.selectionAdorned has been set to false and there is a Binding of Part.isShadowed to Part.isSelected.
But I don’t understand what it is that you want.
I hope that the selected line and equipment will be removed from the original drawing, suspended display.
Are you asking about how to delete a selected Link? The user can do that by clicking the DELETE key, which calls CommandHandler.deleteSelection. Programmatically you can call that method too.