List of Grid/Keyboard navigation shortcuts. FOCUS:
                        Alt + w  focuses the widget.
                        ACTIONS APPLIED ON GRID HEADER:
                        Enter  sort by the column.
                        Alt + Down  opens the filter menu.
                        Esc  closes the filter menu.
                        Tab  navigates through the elements in the filter menu(default browser behavior).
                        Shift + Tab  same as Tab, but in reverse order.
                        Ctrl + Left Arrow  reorders the column with the previous one.
                        Ctrl + Right Arrow  reorders the column with the next one.
                        ACTIONS APPLIED ON GRID DATA TABLE:
                        Arrow Keys  to navigate over the cells.
                        Enter  on group row will toggle expand/collapse.
                        Page Up  pages on previous page.
                        Page Down  pages on next page.
                        Space  selects the row holding the currently highlighted cell.
                        Ctrl + Space  selects or deselects the current row, while persisting previously selected rows (only for selection mode "multiple").
                        Shift + Space  performs range selection, selects all the rows between the last selected one (with SPACE or mouse click) and the one holding the focused cell.
                        Shift + Arrow Keys  adds the row which holds the focused cell to the selection (only for selection mode "multiple").
                        Ctrl + Home  focuses the first focusable element inside the body.
                        Ctrl + End  focuses the last focusable cell in the last row.
                        Home  focuses the first focusable cell in the row.
                        End  focuses the last focusable cell in the row.
                        Ctrl + Space  group/ungroup the focused column.