pub trait Operation<T> {
    fn container(
        &mut self,
        id: Option<&Id>,
        operate_on_children: &mut dyn FnMut(&mut dyn Operation<T>)
    ); fn focusable(&mut self, _state: &mut dyn Focusable, _id: Option<&Id>) { ... } fn scrollable(&mut self, _state: &mut dyn Scrollable, _id: Option<&Id>) { ... } fn text_input(&mut self, _state: &mut dyn TextInput, _id: Option<&Id>) { ... } fn custom(&mut self, _state: &mut dyn Any, _id: Option<&Id>) { ... } fn finish(&self) -> Outcome<T> { ... } }
Expand description

A piece of logic that can traverse the widget tree of an application in order to query or update some widget state.

Required Methods§

source

fn container(
    &mut self,
    id: Option<&Id>,
    operate_on_children: &mut dyn FnMut(&mut dyn Operation<T>)
)

Operates on a widget that contains other widgets.

The operate_on_children function can be called to return control to the widget tree and keep traversing it.

Provided Methods§

source

fn focusable(&mut self, _state: &mut dyn Focusable, _id: Option<&Id>)

Operates on a widget that can be focused.

source

fn scrollable(&mut self, _state: &mut dyn Scrollable, _id: Option<&Id>)

Operates on a widget that can be scrolled.

source

fn text_input(&mut self, _state: &mut dyn TextInput, _id: Option<&Id>)

Operates on a widget that has text input.

source

fn custom(&mut self, _state: &mut dyn Any, _id: Option<&Id>)

Operates on a custom widget with some state.

source

fn finish(&self) -> Outcome<T>

Finishes the Operation and returns its Outcome.

Implementors§