Implement focus handing in RadioButtonGroup and CheckboxGroup (#10440)
Fixes #10429
* implement focus handing in RadioButtonGroup, fixes #10429
* Merge branch 'master' of https://github.com/vaadin/framework into radiobuttongroup-focus
* merge
* Merge branch 'master' of https://github.com/vaadin/framework into radiobuttongroup-focus
* fix initial focus handling also on CheckBoxGroup and add tests
* add license headers
* Merge branch 'master' of https://github.com/vaadin/framework into radiobuttongroup-focus
* changed client to use lambdas and refactored focus testing to parent class
* made FocusTest abstract
* Merge branch 'master' of https://github.com/vaadin/framework into radiobuttongroup-focus
* don't allow focusing on disabled items & refactor focusing first item
Add ContentMode for the description of MenuItems (#9984)
Adds the ability to set the content mode for the description of a menu item that is part of a menu bar.
This functionality was already available for every AbstractComponent but missing for the menu items of menu bars.
If no content mode is specified it defaults to the PREFORMATED content mode.
* Rename HierarchicalDataCommunicator#getMapper to getHierarchyMapper
* Make rpc field in Notification private
* Change DropIndexCalculator.ALWAYS_DROP_TO_END to a generic static method
* Move EditorImpl#editRow documentation to the interface level
* Correct GridDragEndEvent, GridDragStartEvent constructor javadocs
* Revert SharedState.registeredEventListeners to a Set
* Rename GridDropTarget dropAllowedOnSortedGridRows
* Rename ColumnState.contentMode to tooltipContentMode
* Accessibility for MenuBar (#3922)
* TabIndex handling fix and an indexing tweak
* Make disabled MenuItems selectable for accessibility (#3922)
- It should be possible to navigate to a disabled MenuItem, even if
triggering the related command is disabled
* Refactor primary style name and aria attribute handling to own method