behavior: menu-bar

Top level menu

There are no elements that have this behavior applied by default. In principle any element - block container - can use this behavior and so to serve as a top-level menu. See sdk/menu/menu-bar.htm for example of such menu bar.

Menu items: immediate children of the element with behavior:menu-bar applied are treated as menu items if they are:

• either of type <li>
• or have attribute role=“menu-item”
• and not disabled.

Menu items may have sub-menus that are shown as popup windows. Typical structure is:

  <ul #menu-bar>
     <li>Menu item with sub-menu
         <menu #sub-menu> 
            <li>Open</li>
            <li>Close</li>
         </menu>
     </li>
     <li>Simple menu item (no submenu)</li>
  </ul>

This behavior does not use any special attributes.

Together with the standard set of events (mouse, keyboard, focus) behavior: menu-bar generates:

• MENU_ITEM_ACTIVE event - mouse is over some menu item. target parameter of the event structure is the active menu item.
• MENU_ITEM_CLICK event - menu item clicked. target parameter of the event structure is the menu item clicked.