ELECTRONIC DEVICE HAVING FLEXIBLE DISPLAY AND METHOD FOR CONTROLLING THE SAME

An electronic device may include a housing including a first housing part and a second housing part configured to movably engage with the first housing part between a retracted position and an extended position, a flexible display coupled to the first housing part and the second housing part such that a size of an area of the flexible display that is visible from a front side of the housing changes as the second housing part is moved between the retracted position and the extended position, a processor, and a memory storing instructions that, when executed by the processor, cause the electronic device to while the second housing part is in the extended position, display, on a first area of the flexible display visible from the front side, a first message bubble and a second message bubble, while the first message bubble and the second message bubble are displayed on the flexible display, identify that the second housing part is moved from the extended position to the retracted position, and based on the second housing part being moved from the extended position to the retracted position, display, on a second area of the flexible display visible from the front side, a combined message bubble by including a content of the first message bubble and a content of the second message bubble, wherein a size of the second area of the flexible display is smaller than a size of the first area of the flexible display.