pub enum ManagerRequest {
    ProposeElement {
        spec: Spec,
        controller: Option<ServerEnd<ControllerMarker>>,
        responder: ManagerProposeElementResponder,
    },
}
Expand description

An interface used to add elements to a session.

An element is a component that is expected to be instantiated as a child of the session and to interact with the user in some way. An element proposer is a component that calls ProposeElement to add an element to the session.

The session will typically implement Manager and provide it to its child element proposers.

For example, an element proposer may be a non-interactive application that listens to the network for a command to display an element to the user. When it receives the command, the element proposer proposes to add an element to the session via the Manager protocol. Similarly, the element proposer may be part of an interactive user interface that proposes elements based on user input.

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ProposeElement

Fields

§spec: Spec
§controller: Option<ServerEnd<ControllerMarker>>

Proposes to add an element to the session.

If ProposeElement returns without error, the caller can assume the element is now part of the session. However, whether or not the element component is actively running, or not, depends on the session implementation. For example, a session may decide to conserve resources by suspending an element which is not visible, or delay the running of an element until a more appropriate time.

Spec
  • spec.component_url is required
  • spec describes the element to add
  • controller can be used to observe and affect the lifecycle of the element, and to set and get annotations on the element
  • error ProposeElementError.NOT_FOUND if spec.component_url could not be resolved
  • error ProposeElementError.INVALID_ARGS if a required field is not present or annotations are invalid

Implementations§

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impl ManagerRequest

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pub fn into_propose_element( self ) -> Option<(Spec, Option<ServerEnd<ControllerMarker>>, ManagerProposeElementResponder)>

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pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

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impl Debug for ManagerRequest

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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fn borrow_mut(&mut self) -> &mut T

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impl<T> Encode<Ambiguous1> for T

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unsafe fn encode( self, _encoder: &mut Encoder<'_>, _offset: usize, _depth: Depth ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID. Read more
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impl<T> Encode<Ambiguous2> for T

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unsafe fn encode( self, _encoder: &mut Encoder<'_>, _offset: usize, _depth: Depth ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID. Read more
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fn instrument(self, span: Span) -> Instrumented<Self>

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const ALIGN: usize = mem::align_of::<T>()

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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

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type Error = Infallible

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type Error = <U as TryFrom<T>>::Error

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