gtk4/auto/
object_expression.rs

1// This file was generated by gir (https://github.com/gtk-rs/gir)
2// from gir-files (https://github.com/gtk-rs/gir-files)
3// DO NOT EDIT
4
5use crate::ffi;
6use glib::{prelude::*, translate::*};
7
8glib::wrapper! {
9    /// A `GObject` value in a [`Expression`][crate::Expression].
10    #[doc(alias = "GtkObjectExpression")]
11    pub struct ObjectExpression(Shared<ffi::GtkObjectExpression>);
12
13    match fn {
14        ref => |ptr| ffi::gtk_expression_ref(ptr as *mut ffi::GtkExpression),
15        unref => |ptr| ffi::gtk_expression_unref(ptr as *mut ffi::GtkExpression),
16    }
17}
18
19impl StaticType for ObjectExpression {
20    fn static_type() -> glib::Type {
21        unsafe { from_glib(ffi::gtk_object_expression_get_type()) }
22    }
23}
24
25impl ObjectExpression {
26    /// Creates an expression evaluating to the given `object` with a weak reference.
27    ///
28    /// Once the `object` is disposed, it will fail to evaluate.
29    ///
30    /// This expression is meant to break reference cycles.
31    ///
32    /// If you want to keep a reference to `object`, use [`ConstantExpression::new()`][crate::ConstantExpression::new()].
33    /// ## `object`
34    /// object to watch
35    ///
36    /// # Returns
37    ///
38    /// a new [`Expression`][crate::Expression]
39    #[doc(alias = "gtk_object_expression_new")]
40    pub fn new(object: &impl IsA<glib::Object>) -> ObjectExpression {
41        assert_initialized_main_thread!();
42        unsafe {
43            from_glib_full(ffi::gtk_object_expression_new(
44                object.as_ref().to_glib_none().0,
45            ))
46        }
47    }
48
49    /// Gets the object that the expression evaluates to.
50    ///
51    /// # Returns
52    ///
53    /// the object, or `NULL`
54    #[doc(alias = "gtk_object_expression_get_object")]
55    #[doc(alias = "get_object")]
56    pub fn object(&self) -> Option<glib::Object> {
57        unsafe { from_glib_none(ffi::gtk_object_expression_get_object(self.to_glib_none().0)) }
58    }
59}
gtk4/auto/object_expression.rs

gtk4/auto/
object_expression.rs
