gtk: Implement HasParamSpec for Expression types

Author: bilelmoussaoui

gtk4/src/expression.rs

@@ -419,5 +419,17 @@ macro_rules! define_expression {
                 value
             }
         }
+
+        impl glib::HasParamSpec for $rust_type {
+            type ParamSpec = crate::ParamSpecExpression;
+
+            type SetValue = $rust_type;
+
+            type BuilderFn = for<'a> fn(&'a str) -> crate::builders::ParamSpecExpressionBuilder<'a>;
+
+            fn param_spec_builder() -> Self::BuilderFn {
+                Self::ParamSpec::builder
+            }
+        }
     };
 }

gtk4/src/param_spec_expression.rs

@@ -2,13 +2,25 @@
 
 use std::marker::PhantomData;
 
-use crate::ParamSpecExpression;
+use crate::{Expression, ParamSpecExpression};
 
 use glib::{
     gobject_ffi, prelude::*, shared::Shared, translate::*, IntoGStr, IntoOptionalGStr, ParamSpec,
     StaticType, Value,
 };
 
+impl glib::HasParamSpec for Expression {
+    type ParamSpec = ParamSpecExpression;
+
+    type SetValue = Expression;
+
+    type BuilderFn = for<'a> fn(&'a str) -> ParamSpecExpressionBuilder<'a>;
+
+    fn param_spec_builder() -> Self::BuilderFn {
+        Self::ParamSpec::builder
+    }
+}
+
 impl std::fmt::Debug for ParamSpecExpression {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         f.write_str("ParamSpecExpression")