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

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License in the LICENSE-APACHE file or at:
//     https://www.apache.org/licenses/LICENSE-2.0

//! Class-specific widget traits
//!
//! These traits provide generic ways to interact with common widget properties,
//! e.g. to read the text of a `Label` or set the state of a `CheckBox`.

use crate::Action;

/// Read / write a boolean value
///
/// The value `true` means *checked*, *selected* or *toggled on*.
pub trait HasBool {
    /// Get the widget's state
    fn get_bool(&self) -> bool;

    /// Set the widget's state
    fn set_bool(&mut self, state: bool) -> Action;
}

/// Read an unformatted `&str`
///
/// For write-support, see [`HasString`]. Alternatively, for e.g.
/// `Label<&'static str>`, the `set_text` method which may be used, but in
/// practice this is rarely sufficient.
pub trait HasStr {
    /// Get text by reference
    fn get_str(&self) -> &str;

    /// Get text as a `String`
    #[inline]
    fn get_string(&self) -> String {
        self.get_str().to_string()
    }
}

/// Read / write an unformatted `String`
pub trait HasString: HasStr {
    /// Set text from a `&str`
    ///
    /// This is a convenience method around `set_string(text.to_string())`.
    #[inline]
    fn set_str(&mut self, text: &str) -> Action {
        self.set_string(text.to_string())
    }

    /// Set text from a string
    fn set_string(&mut self, text: String) -> Action;
}

/*TODO: HasHtml with get and set?
/// Read / write a formatted `String`
pub trait HasFormatted {
    /// Get text as a `String`
    fn get_formatted(&self) -> FormattedString;

    /// Set from a formatted string
    fn set_formatted<S: Into<FormattedString>>(&mut self, text: S) -> Action
    where
        Self: Sized,
    {
        self.set_formatted_string(text.into())
    }

    /// Set from a formatted string
    fn set_formatted_string(&mut self, text: FormattedString) -> Action;
}
*/