When a menupopup is opened, the active element does not change, so
their focus-ring will be hidden until the menupopup closes for it to be
less distracting.
When a panel popup is opened, the focus will be moved inside
of the panel, so we keep track of whichever element was previously
focused, and re-focus it when the panel goes away.
Minor reorganization of focus-ring mixin to use variables instead
of parameters to make hiding of focus-ring easier.
- library tab appears in the tabs menu without the close button
and no drag functionality
- minor refactoring to simplify how the tabs icons are fetched for
items with item.getItemTypeIconName()
- added focus-ring to tabs and filter field via @focus-ring mixin
so that the focus outline looks the same for the input field and buttons
- removed default margin from the <description> component of the tab
titles that moved titles up by a bit
- Matching substrings from tab's title are bolded.
- Drag-and-drop functionality to reorder tabs.
- ArrowUp/ArrowDown navigate the tab's titles. Tab/Shift-Tab move
across both titles and close buttons. Enter from filter field focuses
the first tab's title. Home/PageUp focuses the filter field. End/PageDown
focuses the last tab's title. ArrowUp/ArrowDown from the filter focus
the last/first tab's title respectively. ArrowUp from the first tab or
ArrowDown from the last tab focus the filter.
