A system for Demand Oriented User Interface Framework may include a display screen displaying a user interface, a memory, an input, and a processor to detect information of a data item displaying in a window for an application program in the user interface. The processor, in response to the input detecting the information of the data item, may control the display screen to display one or more additional windows. The one or more additional windows may provide one or more functions outside of functionality for the application program to process the data item. The one or more functions may be ranked and displayed in the user interface for user selection.