1. A mobile terminal comprising: a touchscreen; and a controller configured to: display, via the touchscreen, a first icon having a first size and corresponding to a first application, in response to receiving a first touch input on the first icon, display an execution screen of the first application on the touchscreen, in response to receiving a second touch input on the first icon, display a change indicator overlapping at least part of the first icon, in response to receiving a third touch input on the change indicator, transition the first icon into a widget object on the touchscreen, wherein the widget object has a second size that is larger than the first size of the first icon, display changing preview information corresponding to dynamic execution results of the first application within an outer boundary of the widget object, and in response to receiving a fourth touch input on the widget object, display the execution screen of the first application on the touchscreen, wherein the execution screen is larger than the widget object for displaying additional information.