Struct DialogStackState

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pub struct DialogStackState<Global, Event, Error> { /* private fields */ }
Expand description

State of the dialog stack.

Add this to your global state.

** unstable **

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impl<Global, Event, Error> DialogStackState<Global, Event, Error>
where Global: 'static, Event: Send + 'static, Error: Send + 'static,

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pub fn new() -> Self

New dialog stack state.

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pub fn push_dialog<Render, State>(&mut self, render: Render, state: State)
where Render: Fn(Rect, &mut Buffer, &mut dyn DialogState<Global, Event, Error>, &mut RenderContext<'_, Global>) -> Result<(), Error> + 'static, State: DialogState<Global, Event, Error> + 'static,

Push a new dialog window on the stack.

This takes

  • a constructor for the AppWidget. This is called for every render and can adjust construction to the environment.
  • the dialogs state.

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This can be called during event handling of a dialog.

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pub fn pop_dialog(&mut self)

Pop the top dialog from the stack.

This can be called repeatedly if necessary.

Note

This can be called during event handling of a dialog.

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pub fn is_empty(&self) -> bool

Is the dialog stack empty?

Note

This can be called during event handling of a dialog.

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pub fn top_state_is<S: 'static>(&self) -> Result<bool, DialogStackError>

Test the type of the top dialog state.

Note

This will not work during event-handling of a dialog.

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pub fn map_top_state_if<S, MAP, R>( &self, map: MAP, ) -> Result<R, DialogStackError>
where MAP: FnOnce(&mut S) -> R, S: DialogState<Global, Event, Error>,

Calls the closure with the top state of the stack if the type matches.

Note

This will not work during event-handling of a dialog.

Trait Implementations§

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impl<Global, Event, Error> AppState<Global, Event, Error> for DialogStackState<Global, Event, Error>
where Global: 'static, Event: Send + 'static, Error: Send + 'static,

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fn init( &mut self, _ctx: &mut AppContext<'_, Global, Event, Error>, ) -> Result<(), Error>

Initialize the application. Runs before the first repaint.
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fn event( &mut self, event: &Event, ctx: &mut AppContext<'_, Global, Event, Error>, ) -> Result<Control<Event>, Error>

Handle an event.
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fn shutdown( &mut self, ctx: &mut AppContext<'_, Global, Event, Error>, ) -> Result<(), Error>

Shutdown the application. Runs after the event-loop has ended. Read more
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fn error( &self, event: Error, ctx: &mut AppContext<'_, Global, Event, Error>, ) -> Result<Control<Event>, Error>

Do error handling.
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impl<Global, Event, Error> Clone for DialogStackState<Global, Event, Error>
where Event: Send + 'static, Error: Send + 'static,

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<Global, Event, Error> Debug for DialogStackState<Global, Event, Error>
where Event: Send + 'static, Error: Send + 'static,

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

Formats the value using the given formatter. Read more
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impl<Global, Event, Error> Default for DialogStackState<Global, Event, Error>
where Event: Send + 'static, Error: Send + 'static,

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<Global, Event, Error> Freeze for DialogStackState<Global, Event, Error>

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impl<Global, Event, Error> !RefUnwindSafe for DialogStackState<Global, Event, Error>

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impl<Global, Event, Error> !Send for DialogStackState<Global, Event, Error>

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impl<Global, Event, Error> !Sync for DialogStackState<Global, Event, Error>

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impl<Global, Event, Error> Unpin for DialogStackState<Global, Event, Error>

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impl<Global, Event, Error> !UnwindSafe for DialogStackState<Global, Event, Error>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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Drops the object pointed to by the given pointer. Read more
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where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.