1. An electronic device comprising: a display; a touch-sensitive surface; memory; one or more processors; and one or more programs, wherein the one or more programs are stored in the and are configured to be executed by the one or more processors, the one or more programs including instructions for: displaying, on the display, a user interface that includes: a user-selectable item, a first panel that includes a first object, and, a second panel that includes a plurality of objects including a second object and a third object; detecting a gesture directed at the user-selectable item; in accordance with a determination that the detected gesture directed at the user-selectable item has a first gesture type, performing a first operation that hides the second panel that includes the plurality of objects; in accordance with a determination that the detected gesture directed at the user-selectable item has a second gesture type, distinct from the first gesture type, performing a second operation that adjusts the second panel, wherein adjusting the second panel includes adjusting sizes of both the second object and the third object, including: increasing a size of the second object on the display in accordance with the detected gesture while maintaining display of at least a portion of the third object on the display; and increasing a size of the third object on the display in accordance with the detected gesture while maintaining display of at least a portion of the second object on the display; and, in accordance with a determination that the detected gesture directed at the user-selectable item has a third gesture type, distinct from the first gesture type and the second gesture type, performing a third operation that is distinct from the first operation and the second operation.