[][src]Enum wayland_client::protocol::wl_data_source::Event

pub enum Event {
    Target {
        mime_type: Option<String>,
    },
    Send {
        mime_type: String,
        fd: RawFd,
    },
    Cancelled,
    DndDropPerformed,
    DndFinished,
    Action {
        dnd_action: u32,
    },
    // some variants omitted
}

Variants

Target

a target accepts an offered mime type

Sent when a target accepts pointer_focus or motion events. If a target does not accept any of the offered types, type is NULL.

Used for feedback during drag-and-drop.

Fields of Target

mime_type: Option<String>
Send

send the data

Request for data from the client. Send the data as the specified mime type over the passed file descriptor, then close it.

Fields of Send

mime_type: Stringfd: RawFd
Cancelled

selection was cancelled

This data source is no longer valid. There are several reasons why this could happen:

The client should clean up and destroy this data source.

For objects of version 2 or older, wl_data_source.cancelled will only be emitted if the data source was replaced by another data source.

DndDropPerformed

the drag-and-drop operation physically finished

The user performed the drop action. This event does not indicate acceptance, wl_data_source.cancelled may still be emitted afterwards if the drop destination does not accept any mime type.

However, this event might however not be received if the compositor cancelled the drag-and-drop operation before this event could happen.

Note that the data_source may still be used in the future and should not be destroyed here.

Only available since version 3 of the interface

DndFinished

the drag-and-drop operation concluded

The drop destination finished interoperating with this data source, so the client is now free to destroy this data source and free all associated data.

If the action used to perform the operation was "move", the source can now delete the transferred data.

Only available since version 3 of the interface

Action

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, mainly in response to destination side changes through wl_data_offer.set_actions, and as the data device enters/leaves surfaces.

It is only possible to receive this event after wl_data_source.dnd_drop_performed if the drag-and-drop operation ended in an "ask" action, in which case the final wl_data_source.action event will happen immediately before wl_data_source.dnd_finished.

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. The chosen action may change alongside negotiation (e.g. an "ask" action can turn into a "move" operation), so the effects of the final action must always be applied in wl_data_offer.dnd_finished.

Clients can trigger cursor surface changes from this point, so they reflect the current action.

Only available since version 3 of the interface

Fields of Action

dnd_action: u32

Trait Implementations

impl MessageGroup for Event[src]

type Map = ProxyMap

The wrapper type for ObjectMap allowing the mapping of Object and NewId arguments to the object map during parsing. Read more

Auto Trait Implementations

impl RefUnwindSafe for Event

impl Send for Event

impl Sync for Event

impl Unpin for Event

impl UnwindSafe for Event

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> Downcast for T where
    T: Any
[src]

impl<T> DowncastSync for T where
    T: Send + Sync + Any
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.