Struct ServerRenderResourceCore 

pub struct ServerRenderResourceCore { /* private fields */ }

The shared implementation of render resources: change coalescing and the reference-counted observer list.

Observers are held weakly; a dropped observer is pruned the next time the list is walked.

Implementations

impl ServerRenderResourceCore

pub fn new() -> Self

pub fn is_disposed(&self) -> bool

pub fn set_value( &self, host: &dyn IServerRenderResourceHost, change: ServerValueChange<'_>, )

Assigns a property field of the resource: moves the observation of the resource from the old value to the new one and records the change. Nothing happens when the value is unchanged.

pub fn set_list_value( &self, host: &dyn IServerRenderResourceHost, old_children: Vec<Rc<dyn IServerRenderResource>>, new_children: Vec<Rc<dyn IServerRenderResource>>, assign: &mut dyn FnMut(), )

Assigns a property field that holds a list of values (the IEnumerable branch of SetValue): moves the observation of the resource from the render resources of the old list to those of the new one and records the change. The lists differ by reference, which is the caller’s equality test.

pub fn remove_observers_from_property( &self, host: &dyn IServerRenderResourceHost, resource: Option<&Rc<dyn IServerRenderResource>>, )

Stops observing the render resource behind a property value.

pub fn invalidated(&self, host: &dyn IServerRenderResourceHost)

Records that a property of the resource changed. The first change since the last queued invalidation enqueues the resource on its compositor.

pub fn dispose(&self)

pub fn dependency_queued_invalidate(&self, host: &dyn IServerRenderResourceHost)

pub fn add_observer(&self, observer: &Rc<dyn IServerRenderResourceObserver>)

pub fn remove_observer(&self, observer: &Rc<dyn IServerRenderResourceObserver>)

pub fn queued_invalidate(&self, this: &dyn IServerRenderResource)

pub fn observer_count(&self) -> usize

The number of distinct live observers.

Trait Implementations

impl Default for ServerRenderResourceCore

fn default() -> Self

Returns the “default value” for a type.