Trait WidgetQuery 

pub trait WidgetQuery<'w, 's> {
    type WidgetView<'a>
       where Self: 'a;

    // Required methods
    fn find_by_id<'a>(
        &'a mut self,
        target_id: &str,
    ) -> Option<Self::WidgetView<'a>>;
    fn find_by_entity<'a>(
        &'a mut self,
        entity: Entity,
    ) -> Option<Self::WidgetView<'a>>;
    fn find_by_class(&self, target_class: &str) -> Vec<Entity>;
    fn get_components<'a>(
        &'a mut self,
        entity: Entity,
    ) -> Option<Self::WidgetView<'a>>;

    // Provided methods
    fn get_by_id<F>(&mut self, id: &str, f: F)
       where F: for<'a> FnOnce(&mut Self::WidgetView<'a>) { ... }
    fn get_by_entity<F>(&mut self, entity: Entity, f: F)
       where F: for<'a> FnOnce(&mut Self::WidgetView<'a>) { ... }
    fn get_by_class<F>(&mut self, class: &str, f: F)
       where F: for<'a> FnMut(&mut Self::WidgetView<'a>) { ... }
}

Trait used for widgets system param.

Required Associated Types

type WidgetView<'a> where Self: 'a

The specific view struct this query returns (Ex, ButtonWidget, TextWidget).

Required Methods

fn find_by_id<'a>(&'a mut self, target_id: &str) -> Option<Self::WidgetView<'a>>

Method to find widget by ID.

fn find_by_entity<'a>( &'a mut self, entity: Entity, ) -> Option<Self::WidgetView<'a>>

Method to find widget by Entity.

fn find_by_class(&self, target_class: &str) -> Vec<Entity>

Method to find entities that match with provided classes.

fn get_components<'a>( &'a mut self, entity: Entity, ) -> Option<Self::WidgetView<'a>>

Get related components of an entity.

Provided Methods

fn get_by_id<F>(&mut self, id: &str, f: F)

where F: for<'a> FnOnce(&mut Self::WidgetView<'a>),

Get the widget and executes a closure on a widget found by its ID.

fn get_by_entity<F>(&mut self, entity: Entity, f: F)

where F: for<'a> FnOnce(&mut Self::WidgetView<'a>),

Get the widget and executes a closure on a widget found by its Entity.

fn get_by_class<F>(&mut self, class: &str, f: F)

where F: for<'a> FnMut(&mut Self::WidgetView<'a>),

Executes a closure on every widget that matches the specified class.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<'w, 's> WidgetQuery<'w, 's> for ButtonQuery<'w, 's>

type WidgetView<'a> = ButtonWidget<'a> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for CheckboxQuery<'w, 's>

type WidgetView<'a> = CheckboxWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for CircularQuery<'w, 's>

type WidgetView<'a> = CircularWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for ColumnQuery<'w, 's>

type WidgetView<'a> = ColumnWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for DropdownQuery<'w, 's>

type WidgetView<'a> = DropdownWidget<'a> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for ImageQuery<'w, 's>

type WidgetView<'a> = ImageWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for LinkQuery<'w, 's>

type WidgetView<'a> = LinkWidget<'a> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for ModalQuery<'w, 's>

type WidgetView<'a> = ModalWidget<'a> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for ProgressBarQuery<'w, 's>

type WidgetView<'a> = ProgressBarWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for RadioGroupQuery<'w, 's>

type WidgetView<'a> = RadioGroupWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for RadioQuery<'w, 's>

type WidgetView<'a> = RadioWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for RootQuery<'w, 's>

type WidgetView<'a> = RootWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for RowQuery<'w, 's>

type WidgetView<'a> = RowWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for ScrollQuery<'w, 's>

type WidgetView<'a> = ScrollWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for SelectQuery<'w, 's>

type WidgetView<'a> = SelectWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for SliderQuery<'w, 's>

type WidgetView<'a> = SliderWidget<'a, 'w, 's> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for TextQuery<'w, 's>

type WidgetView<'a> = TextWidget<'a> where Self: 'a

impl<'w, 's> WidgetQuery<'w, 's> for TextInputQuery<'w, 's>

type WidgetView<'a> = TextInputWidget<'a, 'w, 's> where Self: 'a