1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
//! Provides some operations to be used on the [`Text`] or [`Rich`].
//!
//! [`Text`]: crate::text::Text
//! [`Rich`]: crate::text::Rich
use crate::core::widget::operation::{self, Operation};
/// Some selected text
pub struct Selection(pub String);
/// Some mutable independent selection field of a [`Text`] or [`Rich`] that can be changed through
/// an operation.
///
/// [`Text`]: crate::text::Text
/// [`Rich`]: crate::text::Rich
pub struct IndependentSelection<'a>(pub &'a mut bool);
impl<'a> IndependentSelection<'a> {
/// Creates a new [`IndependentSelection`] with the given mutable reference
pub fn new(isel: &'a mut bool) -> Self {
Self(isel)
}
}
/// Gets all the currently selected text
pub fn selected() -> impl Operation<String> {
struct CopySelection {
contents: Vec<String>,
}
impl Operation<String> for CopySelection {
fn traverse(&mut self, operate: &mut dyn FnMut(&mut dyn Operation<String>)) {
operate(self);
}
fn custom(
&mut self,
_id: Option<&iced_widget::Id>,
_bounds: iced_widget::core::Rectangle,
_state: &mut dyn std::any::Any,
) {
if let Some(selection) = _state.downcast_ref::<Selection>() {
self.contents.push(selection.0.clone());
}
}
fn finish(&self) -> operation::Outcome<String> {
if !self.contents.is_empty() {
let clipboard = self.contents.iter().fold(String::new(), |mut str, s| {
if str.is_empty() {
str = s.to_owned();
} else {
str.push('\n');
str.push_str(s);
}
str
});
operation::Outcome::Some(clipboard)
} else {
operation::Outcome::None
}
}
}
CopySelection {
contents: Vec::new(),
}
}
/// Sets all children instances of [`Text`] or [`Rich`] to be globally selectable instead of
/// independently selectable.
///
/// [`Text`]: crate::text::Text
/// [`Rich`]: crate::text::Rich
pub fn global_selection() -> impl Operation {
struct SetGlobalSelection;
impl Operation for SetGlobalSelection {
fn traverse(&mut self, operate: &mut dyn FnMut(&mut dyn Operation)) {
operate(self);
}
fn custom(
&mut self,
_id: Option<&iced_widget::Id>,
_bounds: iced_widget::core::Rectangle,
_state: &mut dyn std::any::Any,
) {
// if let Some(selection) = _state.downcast_mut::<IndependentSelection<'_>>() {
// *selection.0 = false;
// }
if let Some(selection) = _state.downcast_mut::<bool>() {
*selection = false;
}
}
}
SetGlobalSelection
}
|
