Enum Cap 

pub enum Cap {
    ListRecycling,
    ListReorder,
    Lottie,
    NativeSymbols,
    Snapshot,
    NavSplit,
    NavHeader,
    Appearance,
    Dialogs,
    FileDialogs,
    Animation,
    Cover,
    TextEditable,
    TextSelectable,
    TextSpellCheck,
    MultiWindow,
    Toolbar,
}

Variants

ListRecycling

ListReorder

The toolkit realizes ListProps::reorderable as drag-to-reorder rows — Native when the platform’s own mechanism drives it (NSTableView drag/drop, UITableView drag delegates, ItemTouchHelper, …), Emulated for a pointer-tracked fake (web-dom). Unsupported ⇒ the list renders normally but rows cannot be dragged (docs/list.md).

Lottie

NativeSymbols

Snapshot

NavSplit

The toolkit presents nav() as sidebar+detail split panes (desktop). Mobile stacks answer Unsupported and get push/pop presentation instead.

NavHeader

The toolkit shows the current destination’s title in a NATIVE header/bar — so a page needn’t repeat it in its own content. Native on XAML (the NavigationView header), UIKit (UINavigationBar), Android (MaterialToolbar), and ArkUI (NavDestination title bars). The desktop custom back-headers (AppKit/Qt/web) show a title only in stack mode, so those backends stay Unsupported (docs/navigation.md).

Appearance

The toolkit applies a runtime appearance override (set_appearance): native widgets restyle in place and dark_mode answers the override. Probe before showing a theme picker — on Unsupported backends the call is ignored.

Dialogs

The toolkit can present native alert/confirm/sheet/prompt modals (docs/dialogs.md).

FileDialogs

The toolkit can present native open/save file pickers (docs/files.md).

Animation

The toolkit runs backend-executed animation for AnimSpec intents on update/set_frame/set_opacity/set_transform (§8.4). Unsupported ⇒ animated calls apply instantly (still correct, just not animated).

Cover

The toolkit presents a kinds::COVER node as a native fullscreen modal surface (docs/cover.md). Unsupported ⇒ the cover piece’s content never shows.

TextEditable

The toolkit’s text_area can be made read-only (TextAreaProps::editable = false).

TextSelectable

The toolkit’s text_area selectability can be toggled (TextAreaProps::selectable). Unsupported where selection is always on (GTK) or the editor isn’t wired (ArkUI).

TextSpellCheck

The toolkit’s text_area has built-in spell-check/autocorrect (TextAreaProps::spellcheck). Unsupported where the toolkit ships none (GTK, Qt, ArkUI).

MultiWindow

The toolkit can open additional native OS windows (Toolkit::open_window, docs/windows.md). Native on the desktop backends and on mobile backends whose platform has a real secondary-window surface (iPad scenes, Android document activities, OHOS multiton abilities). On Unsupported backends day_core::open_window still works — the content presents as a fullscreen cover in the primary window instead. Probe it to adapt chrome: an Unsupported tier has no native title bar or close button, so window content should carry its own close affordance.

Toolbar

The toolkit gives a window a native toolbar (Toolkit::set_toolbar, docs/toolbars.md): Native on the desktop backends, Unsupported elsewhere — a phone has no toolbar, and day does not draw a fake one. Probe it to decide where a command lives: an app puts its refresh button on the toolbar where there is one and in the content where there is not.

Trait Implementations

impl Clone for Cap

fn clone(&self) -> Cap

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Cap

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl PartialEq for Cap

fn eq(&self, other: &Cap) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Cap

impl Eq for Cap

impl StructuralPartialEq for Cap