Macro delegate_noop

macro_rules! delegate_noop {
    ($(@< $( $lt:tt $( : $clt:tt $(+ $dlt:tt )* )? ),+ >)? $dispatch_from: ty : $interface: ty) => { ... };
    ($(@< $( $lt:tt $( : $clt:tt $(+ $dlt:tt )* )? ),+ >)? $dispatch_from: ty : ignore $interface: ty) => { ... };
}

A helper macro which delegates a set of Dispatch implementations for proxies to a static handler.

Usage

This macro is useful to implement Dispatch for interfaces where events are unimportant to the current application and can be ignored.

Example

use wayland_client::{delegate_noop, protocol::{wl_data_offer, wl_subcompositor}};

/// The application state
struct ExampleApp {
    // ...
}

// Ignore all events for this interface:
delegate_noop!(ExampleApp: ignore wl_data_offer::WlDataOffer);

// This interface should not emit events:
delegate_noop!(ExampleApp: wl_subcompositor::WlSubcompositor);

This last example will execute unreachable!() if the interface emits any events.