can show main menu using new method
successfully showing our menu using the new method
stuck on showing the right color
the color problem (json.stringify(menu.fillColor) == {}) got sovled
bugfix: radio button menu works wrong
checkable menu status got recorded
doing exchange focus between on parent and child
fix the problem that there's too much trash output complaining non-notifyable
key navigation(including left and right)
bugfix: parent lost focus still there while submenu got destroied
bugfix: wrongly select inactive item
bugfix: subMenu still there while parent got destroied
give focus to parent
add argument checked to ItemClicked signal
bugfix: remove the deepest subMenu when selecting items that has no submenu
support return
bugfix: pressing return takes effects on item which has subment
key navigation support
focusOutEvent
move menuUnregistered signal from menuManager to menuObj