A method performed at an electronic device for prototyping a user interface comprises selecting a plurality of graphical elements for defining a prototype of the user interface, the plurality of graphical elements including at least a gesture patch and a first layer patch, the gesture patch being configurable to define a type of user interactions with the prototype of the user interface, the first layer patch corresponding to a first layer of the prototype of the user interface. The method further comprises coupling an output of the gesture patch to an input of the first layer patch, generating the prototype of the user interface for display, and updating the prototype of the user interface in accordance with user-interaction data associated with a gesture made on the prototype of the user interface and the coupling of the gesture patch to the input of the first layer patch.