Struct Shell 

pub struct Shell { /* private fields */ }

Host-facing isolate: the AppCell plus the methods the embedder pushes.

Every push is one turn: the App is borrowed for the binding call and released before the cell’s checkpoint, where the microtasks and futures the event queued run.

Implementations

impl Shell

pub fn new(platform: PlatformRef, setup: impl FnOnce(&mut App)) -> Shell

Builds the heap from platform, then runs application setup.

Setup (later widgets run_app) requests the first frame when it installs work that needs one.

pub fn app(&self) -> RefMut<'_, App>

The App, borrowed until the guard drops. A host that needs a full turn — a borrow, then the checkpoint — takes cell.

pub fn cell(&self) -> &Rc<AppCell>

Trait Implementations

impl EmbedderClient for Shell

fn frame(&mut self, frame: Frame)

fn view_added(&mut self, _id: ViewId)

fn view_metrics_changed(&mut self, _id: ViewId)

fn view_removed(&mut self, _id: ViewId)

fn view_focus_changed(&mut self, event: ViewFocusEvent)

Flutter PlatformDispatcher.onViewFocusChange.

fn pointer_data_packet(&mut self, packet: PointerDataPacket)

Flutter PlatformDispatcher.onPointerDataPacket.

fn key_data(&mut self, data: KeyData) -> bool

Flutter PlatformDispatcher.onKeyData.

fn platform_brightness_changed(&mut self)

Flutter PlatformDispatcher.onPlatformBrightnessChanged: the host’s light or dark preference changed, and Platform::platform_brightness already answers the new one.

fn locales_changed(&mut self)

Flutter PlatformDispatcher.onLocaleChanged: the host’s locale list changed, and Platform::locales already answers the new one.

fn system_fonts_changed(&mut self)

Flutter PlatformDispatcher.onSystemFontsChanged: the host registered faces the framework did not have when text last laid out.

fn wake(&mut self, elapsed: Duration)

The turn asked for through Dispatcher::wake_at: its deadline has passed.

fn text_input_editing_value(&mut self, _view: ViewId, value: TextEditingValue)

Flutter TextInputClient.updateEditingValue. The default drops it.

fn text_input_action(&mut self, _view: ViewId, action: TextInputAction)

Flutter TextInputClient.performAction. The default drops it.

fn text_input_closed(&mut self, _view: ViewId)

Flutter TextInputClient.connectionClosed. The default drops it.

fn system_context_menu_hidden(&mut self)

Flutter SystemContextMenuClient.handleSystemHide. The default drops it.

fn custom_context_menu_action(&mut self, callback_id: &str)

Flutter SystemContextMenuClient.handleCustomContextMenuAction. The default drops it.