Menuitems that specify checkEnabled:true in the menu model cause the menu system to check their enable state before displaying them. This is useful for items in submenus and the appmenu, because they are not constantly displayed (like items in the command & view menus), meaning their enable state always appears correct when the menu is popped up.
The command-enabled event is generated as part of menu updating.
To check the enable state of a menuitem, a command-enable event is sent through the commander chain. This event does not go through the DOM.
If nothing in the commander chain calls preventDefault() on the event, the menuitem will be enabled.
Supported Widgets
- None.
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