Struct DelegateCx

pub struct DelegateCx<'a, 'b, T> { /* private fields */ }

The context passed to the AppDelegate trait.

Implementations

impl<'a, 'b, T> DelegateCx<'a, 'b, T>

pub fn rebuild(&mut self)

Request a rebuild of the view tree.

pub fn quit(&mut self)

Quit the application.

pub fn open_window<V>( &mut self, window: Window, ui: impl FnMut(&mut T) -> V + 'static, )

where V: AnyView<T> + 'static,

Add a window to the application.

pub fn close_window(&mut self, window_id: WindowId)

Close a window.

Methods from Deref<Target = BaseCx<'b>>

pub fn fonts(&mut self) -> &mut (dyn Fonts + 'static)

Get the Fonts as a mutable reference.

pub fn measure_paragraph(&mut self, paragraph: &Paragraph, width: f32) -> Size

Measure a paragraph.

pub fn layout_paragraph( &mut self, paragraph: &Paragraph, width: f32, ) -> Vec<TextLayoutLine>

Layout a paragraph.

pub fn clipboard(&mut self) -> &mut Clipboard

Get the Clipboard.

pub fn proxy(&self) -> CommandProxy

Get the CommandProxy.

pub fn cmd<T>(&mut self, command: T)

where T: Any + Send,

Emit a command.

pub fn spawn_async(&mut self, future: impl Future<Output = ()> + Send + 'static)

Spawn a future.

pub fn cmd_async<T>(&self, future: impl Future<Output = T> + Send + 'static)

where T: Any + Send,

Spawn a future sending a command when it completes.

pub fn contexts(&self) -> &Contexts

Get a reference to the Contexts.

pub fn contexts_mut(&mut self) -> &mut Contexts

Get a mutable reference to the Contexts.

pub fn insert_context<T>(&mut self, context: T) -> Option<T>

where T: Any,

Insert a context.

pub fn contains_context<T>(&self) -> bool

where T: Any,

Check if a context is contained.

pub fn remove_context<T>(&mut self) -> Option<T>

where T: Any,

Remove a context.

pub fn get_context<T>(&self) -> Option<&T>

where T: Any,

Get a context.

pub fn get_context_mut<T>(&mut self) -> Option<&mut T>

where T: Any,

Get a mutable context.

pub fn context<T>(&self) -> &T

where T: Any,

Get a context.

Panics

• If the context is not found.

pub fn context_mut<T>(&mut self) -> &mut T

where T: Any,

Get a mutable context.

Panics

• If the context is not found.

pub fn context_or_default<T>(&mut self) -> &mut T

where T: Any + Default,

Get a context or insert a default.

Trait Implementations

impl<'b, T> Deref for DelegateCx<'_, 'b, T>

type Target = BaseCx<'b>

The resulting type after dereferencing.

fn deref(&self) -> &<DelegateCx<'_, 'b, T> as Deref>::Target

Dereferences the value.

impl<T> DerefMut for DelegateCx<'_, '_, T>

fn deref_mut(&mut self) -> &mut <DelegateCx<'_, '_, T> as Deref>::Target

Mutably dereferences the value.