Change Details

reproduction case: see test code. current scroller focus movement is different to previous movement without focus manager. here is legacy focus behavior. |state in viewport\behavior|press tab key|press arrow key|on focus| |-----|-----|-----|-----| |no focusable content |focus next object outside of scroller|move scroll bar|focus scroller itself.| |focusable content with next focus object| if the next object is not last leaf of focus tree, focus next object of focusable content. otherwise, focus next object outside of scroller.|if the next object is at arrow direction, focus next object of focusable content. otherwise, move scroll bar.|focus the top content of focus tree.|

reproduction case: see test code. current scroller focus movement is different to previous movement without focus manager. legacy focus behavior: |state in viewport\behavior|press tab key|press arrow key|on focus| |-----|-----|-----|-----| |no focusable content |focus next object outside of scroller|move scroll bar|focus scroller itself.| |focusable content with next focus object| if the next object is not last leaf of focus tree, focus next object of focusable content. otherwise, focus next object outside of scroller.|if the next object is at arrow direction, focus next object of focusable content. otherwise, move scroll bar.|focus the top content of focus tree.| currnet focus behavior: |state in viewport\behavior|press tab key|press arrow key|on focus| |-----|-----|-----|-----| |no focusable content | focus next child object of scroller | move object at arrow direction. sometimes scroll bar is moved (i don't know that condition) | focus child object of scroller and autoscrolled.| |focusable content with next focus object| focus next child object of scroller | move object at arrow direction |focus the top content of focus tree.|

reproduction case: see test code. current scroller focus movement is different to previous movement without focus manager. here is legacy focus behavior.: |state in viewport\behavior|press tab key|press arrow key|on focus| |-----|-----|-----|-----| |no focusable content |focus next object outside of scroller|move scroll bar|focus scroller itself.| |focusable content with next focus object| if the next object is not last leaf of focus tree, focus next object of focusable content. otherwise, focus next object outside of scroller.|if the next object is at arrow direction, focus next object of focusable content. otherwise, move scroll bar.|focus the top content of focus tree.| currnet focus behavior: |state in viewport\behavior|press tab key|press arrow key|on focus| |-----|-----|-----|-----| |no focusable content | focus next child object of scroller | move object at arrow direction. sometimes scroll bar is moved (i don't know that condition) | focus child object of scroller and autoscrolled.| |focusable content with next focus object| focus next child object of scroller | move object at arrow direction |focus the top content of focus tree.|