The Focus Manager Node Plugin makes it easy to manage focus among +a Node's descendants. Primarily intended to help with widget development, +the Focus Manager Node Plugin can be used to improve the keyboard +accessibility of widgets.
++When designing widgets that manage a set of descendant controls (i.e. buttons +in a toolbar, tabs in a tablist, menuitems in a menu, etc.) it is important to +limit the number of descendants in the browser's default tab flow. The fewer +number of descendants in the default tab flow, the easier it is for keyboard +users to navigate between widgets by pressing the tab key. When a widget has +focus it should provide a set of shortcut keys (typically the arrow keys) +to move focus among its descendants. +
+
+To this end, the Focus Manager Node Plugin makes it easy to define a Node's
+focusable descendants, define which descendant should be in the default tab
+flow, and define the keys that move focus among each descendant.
+Additionally, as the CSS
+:focus
+pseudo class is not supported on all elements in all
+A-Grade browsers,
+the Focus Manager Node Plugin provides an easy, cross-browser means of
+styling focus.
+
This module contains the following classes:
+ +