Trait ExternalDndBackend 

pub trait ExternalDndBackend {
    // Required method
    fn attach(
        &mut self,
        parent: ParentHandle,
        window_id: TeksiloWindowId,
        poster: Arc<dyn AppEventPoster>,
    ) -> Box<dyn ExternalDndGuard>;
}

Swappable external-drag backend. One backend instance serves the whole app; Self::attach is called once per window.

Required Methods

fn attach( &mut self, parent: ParentHandle, window_id: TeksiloWindowId, poster: Arc<dyn AppEventPoster>, ) -> Box<dyn ExternalDndGuard>

Register this app as the OS drop target for the window identified by parent (its raw window/display handle). For every phase of a drag over that window the backend MUST post an ExternalDndEventPayload — with window_id_owner set to window_id — through poster.

Returns a guard whose Drop revokes the registration. The guard is held by ExternalDndHandle until the window closes.

Trait Implementations

impl ExternalDndBackend for Box<dyn ExternalDndBackend>

Forward through a boxed backend, so ExternalDndHandle::new(default_backend()) (which returns Box<dyn ExternalDndBackend>) type-checks.

fn attach( &mut self, parent: ParentHandle, window_id: TeksiloWindowId, poster: Arc<dyn AppEventPoster>, ) -> Box<dyn ExternalDndGuard>

Register this app as the OS drop target for the window identified by parent (its raw window/display handle). For every phase of a drag over that window the backend MUST post an ExternalDndEventPayload — with window_id_owner set to window_id — through poster.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl ExternalDndBackend for Box<dyn ExternalDndBackend>

Forward through a boxed backend, so ExternalDndHandle::new(default_backend()) (which returns Box<dyn ExternalDndBackend>) type-checks.

fn attach( &mut self, parent: ParentHandle, window_id: TeksiloWindowId, poster: Arc<dyn AppEventPoster>, ) -> Box<dyn ExternalDndGuard>

Implementors

impl ExternalDndBackend for MemoryExternalDndBackend

impl ExternalDndBackend for NoopExternalDndBackend