Trait cursive::view::ViewWrapper [−][src]
pub trait ViewWrapper: 'static { type V: View + ?Sized; fn with_view<F, R>(&self, f: F) -> Option<R>
where
F: FnOnce(&Self::V) -> R; fn with_view_mut<F, R>(&mut self, f: F) -> Option<R>
where
F: FnOnce(&mut Self::V) -> R; fn into_inner(self) -> Result<Self::V, Self>
where
Self: Sized,
Self::V: Sized, { ... } fn wrap_draw(&self, printer: &Printer) { ... } fn wrap_required_size(&mut self, req: Vec2) -> Vec2 { ... } fn wrap_on_event(&mut self, ch: Event) -> EventResult { ... } fn wrap_layout(&mut self, size: Vec2) { ... } fn wrap_take_focus(&mut self, source: Direction) -> bool { ... } fn wrap_call_on_any<'a>(&mut self, selector: &Selector, callback: AnyCb<'a>) { ... } fn wrap_focus_view(&mut self, selector: &Selector) -> Result<(), ()> { ... } fn wrap_needs_relayout(&self) -> bool { ... } fn wrap_important_area(&self, size: Vec2) -> Rect { ... } }
Generic wrapper around a view.
This trait is a shortcut to implement View
on a type by forwarding
calls to a wrapped view.
You only need to define with_view
and with_view_mut
(the wrap_impl!
macro can help you with that), and you will get
the View
implementation for free.
You can also override any of the wrap_*
methods for more specific
behaviors (the default implementations simply forwards the calls to the
child view).
Associated Types
Required Methods
fn with_view<F, R>(&self, f: F) -> Option<R> where
F: FnOnce(&Self::V) -> R,
F: FnOnce(&Self::V) -> R,
Runs a function on the inner view, returning the result.
Returns None
if the inner view is unavailable. This should only
happen with some views if they are already borrowed by another call.
fn with_view_mut<F, R>(&mut self, f: F) -> Option<R> where
F: FnOnce(&mut Self::V) -> R,
F: FnOnce(&mut Self::V) -> R,
Runs a function on the inner view, returning the result.
Returns None
if the inner view is unavailable. This should only
happen with some views if they are already borrowed by another call.
Provided Methods
fn into_inner(self) -> Result<Self::V, Self> where
Self: Sized,
Self::V: Sized,
Self: Sized,
Self::V: Sized,
Attempts to retrieve the inner view.
fn wrap_draw(&self, printer: &Printer)
Wraps the draw
method.
fn wrap_required_size(&mut self, req: Vec2) -> Vec2
Wraps the required_size
method.
fn wrap_on_event(&mut self, ch: Event) -> EventResult
Wraps the on_event
method.
fn wrap_layout(&mut self, size: Vec2)
Wraps the layout
method.
fn wrap_take_focus(&mut self, source: Direction) -> bool
Wraps the take_focus
method.
fn wrap_call_on_any<'a>(&mut self, selector: &Selector, callback: AnyCb<'a>)
Wraps the find
method.
fn wrap_focus_view(&mut self, selector: &Selector) -> Result<(), ()>
Wraps the focus_view
method.
fn wrap_needs_relayout(&self) -> bool
Wraps the needs_relayout
method.
fn wrap_important_area(&self, size: Vec2) -> Rect
Wraps the important_area
method.
Implementors
impl<T: View> ViewWrapper for BoxView<T> type V = T;
impl<V: View> ViewWrapper for HideableView<V> type V = V;
impl<T: View + 'static> ViewWrapper for IdView<T> type V = T;
impl<T: View> ViewWrapper for Layer<T> type V = T;
impl<T: View> ViewWrapper for OnEventView<T> type V = T;
impl<V: View> ViewWrapper for Panel<V> type V = V;
impl<T: View> ViewWrapper for ShadowView<T> type V = T;
impl<T: View> ViewWrapper for SizedView<T> type V = T;
impl<T: View> ViewWrapper for TrackedView<T> type V = T;
impl ViewWrapper for ViewBox type V = View;