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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::Expression;
use glib::{prelude::*, translate::*};

glib::wrapper! {
    /// A `GObject` property value in a [`Expression`][crate::Expression].
    #[doc(alias = "GtkPropertyExpression")]
    pub struct PropertyExpression(Shared<ffi::GtkPropertyExpression>);

    match fn {
        ref => |ptr| ffi::gtk_expression_ref(ptr as *mut ffi::GtkExpression),
        unref => |ptr| ffi::gtk_expression_unref(ptr as *mut ffi::GtkExpression),
    }
}

impl StaticType for PropertyExpression {
    fn static_type() -> glib::Type {
        unsafe { from_glib(ffi::gtk_property_expression_get_type()) }
    }
}

impl PropertyExpression {
    /// Creates an expression that looks up a property.
    ///
    /// The object to use is found by evaluating the `expression`,
    /// or using the `this` argument when `expression` is `NULL`.
    ///
    /// If the resulting object conforms to `this_type`, its property named
    /// `property_name` will be queried. Otherwise, this expression's
    /// evaluation will fail.
    ///
    /// The given `this_type` must have a property with `property_name`.
    /// ## `this_type`
    /// The type to expect for the this type
    /// ## `expression`
    /// Expression to
    ///   evaluate to get the object to query or `NULL` to
    ///   query the `this` object
    /// ## `property_name`
    /// name of the property
    ///
    /// # Returns
    ///
    /// a new [`Expression`][crate::Expression]
    #[doc(alias = "gtk_property_expression_new")]
    pub fn new(
        this_type: glib::types::Type,
        expression: Option<impl AsRef<Expression>>,
        property_name: &str,
    ) -> PropertyExpression {
        assert_initialized_main_thread!();
        unsafe {
            from_glib_full(ffi::gtk_property_expression_new(
                this_type.into_glib(),
                expression
                    .map(|p| p.as_ref().clone().upcast())
                    .into_glib_ptr(),
                property_name.to_glib_none().0,
            ))
        }
    }

    /// Creates an expression that looks up a property.
    ///
    /// The object to use is found by evaluating the `expression`,
    /// or using the `this` argument when `expression` is `NULL`.
    ///
    /// If the resulting object conforms to `this_type`, its
    /// property specified by `pspec` will be queried.
    /// Otherwise, this expression's evaluation will fail.
    /// ## `expression`
    /// Expression to
    ///   evaluate to get the object to query or `NULL` to
    ///   query the `this` object
    /// ## `pspec`
    /// the `GParamSpec` for the property to query
    ///
    /// # Returns
    ///
    /// a new [`Expression`][crate::Expression]
    #[doc(alias = "gtk_property_expression_new_for_pspec")]
    #[doc(alias = "new_for_pspec")]
    pub fn for_pspec(
        expression: Option<impl AsRef<Expression>>,
        pspec: impl AsRef<glib::ParamSpec>,
    ) -> PropertyExpression {
        assert_initialized_main_thread!();
        unsafe {
            from_glib_full(ffi::gtk_property_expression_new_for_pspec(
                expression
                    .map(|p| p.as_ref().clone().upcast())
                    .into_glib_ptr(),
                pspec.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the expression specifying the object of
    /// a property expression.
    ///
    /// # Returns
    ///
    /// the object expression
    #[doc(alias = "gtk_property_expression_get_expression")]
    #[doc(alias = "get_expression")]
    pub fn expression(&self) -> Option<Expression> {
        unsafe {
            from_glib_none(ffi::gtk_property_expression_get_expression(
                self.to_glib_none().0,
            ))
        }
    }

    /// Gets the `GParamSpec` specifying the property of
    /// a property expression.
    ///
    /// # Returns
    ///
    /// the `GParamSpec` for the property
    #[doc(alias = "gtk_property_expression_get_pspec")]
    #[doc(alias = "get_pspec")]
    pub fn pspec(&self) -> glib::ParamSpec {
        unsafe {
            from_glib_none(ffi::gtk_property_expression_get_pspec(
                self.to_glib_none().0,
            ))
        }
    }
}