Struct CancelChain 

pub struct CancelChain(/* private fields */);

Implementation of CancellationTrigger which chains together several trigger implementations.

This is mostly used internally by crate::on_trigger to implement chaining of multiple cancellation scopes. However, it is still a normal CancellationTrigger and thus can be used to combine triggers manually as well.

Implementations

impl CancelChain

pub fn pop(&mut self) -> Option<DynamicCancellationTrigger>

Remove the first trigger in the chain.

pub fn push<T: CancellationTrigger + 'static>(&mut self, trigger: T)

Add a new cancellation trigger. The new chain starts with the given trigger and continues with the already present ones.

pub fn clone_and_flatten(&self) -> DynamicCancellationTrigger

Make a copy of this trigger chain, but if the chain is empty or only has a single element, replace it with a simplified trigger which does not need vector traversal.

Trait Implementations

impl CancellationTrigger for CancelChain

fn is_cancelled(&self) -> bool

Returns true if this trigger is canceled.

fn type_name(&self) -> &'static str

Return the type name of this CancellationTrigger, or in case of “composite” triggers, the type name of the trigger that actually signaled the cancellation.

impl Clone for CancelChain

fn clone(&self) -> CancelChain

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for CancelChain

fn default() -> CancelChain

Returns the “default value” for a type.