# Button ## `` - `icon-align`: left | right - `icon`, `selected`, `value`, `submenu` (name of a menu in the same view), `default` - actions: busy, release, select - events: Release, Select - methods: toggleCheckable ```xml ``` ## Guidance - ``; change the label with the `set` action. - `busy` action: a spinner replaces the label and the button is disabled until `enable` (or `disable`) ends it. - `selected="false"` makes a toggle (Select pressed, Release released); such buttons as direct children of a `group mode="mutex"` (or `"toggle"`) are one choice: the group's value is the pressed button's `value`, else its name. `toggleCheckable` shows a state on it without Select or Release. - `submenu="m"` opens the menu `m` written in the view. At most one `default="true"` per view: Enter anywhere fires it. - An icon-only button needs `title` naming the action.