Struct wayland_client::protocol::wl_data_offer::Implementation

pub struct Implementation<ID> {
    pub offer: fn(_: &mut EventQueueHandle, _: &mut ID, _: &WlDataOffer, _: String),
    pub source_actions: fn(_: &mut EventQueueHandle, _: &mut ID, _: &WlDataOffer, _: u32),
    pub action: fn(_: &mut EventQueueHandle, _: &mut ID, _: &WlDataOffer, _: u32),
}

Fields

offer: fn(_: &mut EventQueueHandle, _: &mut ID, _: &WlDataOffer, _: String)

advertise offered mime type

Sent immediately after creating the wl_data_offer object. One event per offered mime type.

Arguments: event_queue_handle, interface_data, wl_data_offer, mime_type

source_actions: fn(_: &mut EventQueueHandle, _: &mut ID, _: &WlDataOffer, _: u32)

notify the source-side available actions

This event indicates the actions offered by the data source. It will be sent right after wl_data_device.enter, or anytime the source side changes its offered actions through wl_data_source.set_actions.

Arguments: event_queue_handle, interface_data, wl_data_offer, source_actions

This request only exists since version 3 of the interface

action: fn(_: &mut EventQueueHandle, _: &mut ID, _: &WlDataOffer, _: u32)

notify the selected action

This event indicates the action selected by the compositor after matching the source/destination side actions. Only one action (or none) will be offered here.

This event can be emitted multiple times during the drag-and-drop operation in response to destination side action changes through wl_data_offer.set_actions.

This event will no longer be emitted after wl_data_device.drop happened on the drag-and-drop destination, the client must honor the last action received, or the last preferred one set through wl_data_offer.set_actions when handling an "ask" action.

Compositors may also change the selected action on the fly, mainly in response to keyboard modifier changes during the drag-and-drop operation.

The most recent action received is always the valid one. Prior to receiving wl_data_device.drop, the chosen action may change (e.g. due to keyboard modifiers being pressed). At the time of receiving wl_data_device.drop the drag-and-drop destination must honor the last action received.

Action changes may still happen after wl_data_device.drop, especially on "ask" actions, where the drag-and-drop destination may choose another action afterwards. Action changes happening at this stage are always the result of inter-client negotiation, the compositor shall no longer be able to induce a different action.

Upon "ask" actions, it is expected that the drag-and-drop destination may potentially choose a different action and/or mime type, based on wl_data_offer.source_actions and finally chosen by the user (e.g. popping up a menu with the available options). The final wl_data_offer.set_actions and wl_data_offer.accept requests must happen before the call to wl_data_offer.finish.

Arguments: event_queue_handle, interface_data, wl_data_offer, dnd_action

This request only exists since version 3 of the interface

Trait Implementations

impl<ID> Copy for Implementation<ID>

impl<ID> Clone for Implementation<ID>

fn clone(&self) -> Implementation<ID>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<ID> PartialEq for Implementation<ID>

fn eq(&self, other: &Implementation<ID>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.