window_clipboard/dnd/
mod.rs

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1use std::borrow::Cow;
2
3use ::dnd::{DndAction, DndDestinationRectangle, Sender};
4use dnd::{DndSurface, Icon};
5use mime::{AllowedMimeTypes, AsMimeTypes};
6
7pub trait DndProvider {
8    /// Set up DnD operations for the Clipboard
9    fn init_dnd(
10        &self,
11        _tx: Box<dyn dnd::Sender<DndSurface> + Send + Sync + 'static>,
12    ) {
13    }
14
15    /// Start a DnD operation on the given surface with some data
16    fn start_dnd<D: AsMimeTypes + Send + 'static>(
17        &self,
18        _internal: bool,
19        _source_surface: DndSurface,
20        _icon_surface: Option<Icon>,
21        _content: D,
22        _actions: DndAction,
23    ) {
24    }
25
26    /// End the current DnD operation, if there is one
27    fn end_dnd(&self) {}
28
29    /// Register a surface for receiving DnD offers
30    /// Rectangles should be provided in order of decreasing priority.
31    /// This method can be called multiple time for a single surface if the
32    /// rectangles change.
33    fn register_dnd_destination(
34        &self,
35        _surface: DndSurface,
36        _rectangles: Vec<DndDestinationRectangle>,
37    ) {
38    }
39
40    /// Set the final action after presenting the user with a choice
41    fn set_action(&self, _action: DndAction) {}
42
43    /// Peek at the contents of a DnD offer
44    fn peek_offer<D: AllowedMimeTypes + 'static>(
45        &self,
46        _mime_type: Option<Cow<'static, str>>,
47    ) -> std::io::Result<D> {
48        Err(std::io::Error::new(
49            std::io::ErrorKind::Other,
50            "DnD not supported",
51        ))
52    }
53}
54
55impl<C: DndProvider> DndProvider for crate::PlatformClipboard<C> {
56    fn init_dnd(
57        &self,
58        tx: Box<dyn Sender<DndSurface> + Send + Sync + 'static>,
59    ) {
60        self.raw.init_dnd(tx);
61    }
62
63    fn start_dnd<D: AsMimeTypes + Send + 'static>(
64        &self,
65        internal: bool,
66        source_surface: DndSurface,
67        icon_surface: Option<Icon>,
68        content: D,
69        actions: DndAction,
70    ) {
71        self.raw.start_dnd(
72            internal,
73            source_surface,
74            icon_surface,
75            content,
76            actions,
77        );
78    }
79
80    fn end_dnd(&self) {
81        self.raw.end_dnd();
82    }
83
84    fn register_dnd_destination(
85        &self,
86        surface: DndSurface,
87        rectangles: Vec<DndDestinationRectangle>,
88    ) {
89        self.raw.register_dnd_destination(surface, rectangles);
90    }
91
92    fn set_action(&self, action: DndAction) {
93        self.raw.set_action(action);
94    }
95
96    fn peek_offer<D: AllowedMimeTypes + 'static>(
97        &self,
98        mime_type: Option<Cow<'static, str>>,
99    ) -> std::io::Result<D> {
100        self.raw.peek_offer::<D>(mime_type)
101    }
102}
window_clipboard/dnd/mod.rs

window_clipboard/dnd/
mod.rs
