apprt/gtk-ng: create the privateObjFieldAccessor helper to unref

src/apprt/gtk-ng/class.zig

@@ -46,6 +46,84 @@ pub fn Common(
             }
         }).private else {};
 
+        /// A helper that can be used to create a property that reads and
+        /// writes a private boxed gobject field type.
+        ///
+        /// Reading the property will result in allocating a pointer and
+        /// setting it will free the previous pointer.
+        ///
+        /// The object class (Self) must still free the private field
+        /// in finalize!
+        pub fn privateBoxedFieldAccessor(
+            comptime name: []const u8,
+        ) gobject.ext.Accessor(
+            Self,
+            @FieldType(Private.?, name),
+        ) {
+            return .{
+                .getter = &struct {
+                    fn get(self: *Self, value: *gobject.Value) void {
+                        gobject.ext.Value.set(
+                            value,
+                            @field(private(self), name),
+                        );
+                    }
+                }.get,
+                .setter = &struct {
+                    fn set(self: *Self, value: *const gobject.Value) void {
+                        const priv = private(self);
+                        if (@field(priv, name)) |v| {
+                            glib.ext.destroy(v);
+                        }
+
+                        const T = @TypeOf(@field(priv, name));
+                        @field(
+                            priv,
+                            name,
+                        ) = gobject.ext.Value.dup(value, T);
+                    }
+                }.set,
+            };
+        }
+
+        /// A helper that can be used to create a property that reads and
+        /// writes a private field gobject field type (reference counted).
+        ///
+        /// Reading the property will result in taking a reference to the
+        /// value and writing the property will unref the previous value.
+        ///
+        /// The object class (Self) must still free the private field
+        /// in finalize!
+        pub fn privateObjFieldAccessor(
+            comptime name: []const u8,
+        ) gobject.ext.Accessor(
+            Self,
+            @FieldType(Private.?, name),
+        ) {
+            return .{
+                .getter = &struct {
+                    fn get(self: *Self, value: *gobject.Value) void {
+                        gobject.ext.Value.set(
+                            value,
+                            @field(private(self), name),
+                        );
+                    }
+                }.get,
+                .setter = &struct {
+                    fn set(self: *Self, value: *const gobject.Value) void {
+                        const priv = private(self);
+                        if (@field(priv, name)) |v| v.unref();
+
+                        const T = @TypeOf(@field(priv, name));
+                        @field(
+                            priv,
+                            name,
+                        ) = gobject.ext.Value.dup(value, T);
+                    }
+                }.set,
+            };
+        }
+
         /// A helper that can be used to create a property that reads and
         /// writes a private `?[:0]const u8` field type.
         ///

src/apprt/gtk-ng/class/clipboard_confirmation_dialog.zig

@@ -59,12 +59,7 @@ pub const ClipboardConfirmationDialog = extern struct {
                 .{
                     .nick = "Request",
                     .blurb = "The clipboard request.",
-                    .accessor = gobject.ext.privateFieldAccessor(
+                    .accessor = C.privateBoxedFieldAccessor("request"),
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "request",
-                    ),
                 },
             );
         };
@@ -78,12 +73,7 @@ pub const ClipboardConfirmationDialog = extern struct {
                 .{
                     .nick = "Clipboard Contents",
                     .blurb = "The clipboard contents being read/written.",
-                    .accessor = gobject.ext.privateFieldAccessor(
+                    .accessor = C.privateObjFieldAccessor("clipboard_contents"),
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "clipboard_contents",
-                    ),
                 },
             );
         };

src/apprt/gtk-ng/class/surface.zig

@@ -50,12 +50,7 @@ pub const Surface = extern struct {
                 .{
                     .nick = "Config",
                     .blurb = "The configuration that this surface is using.",
-                    .accessor = gobject.ext.privateFieldAccessor(
+                    .accessor = C.privateObjFieldAccessor("config"),
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "config",
-                    ),
                 },
             );
         };
@@ -89,12 +84,7 @@ pub const Surface = extern struct {
                 .{
                     .nick = "Desired Font Size",
                     .blurb = "The desired font size, only affects initialization.",
-                    .accessor = gobject.ext.privateFieldAccessor(
+                    .accessor = C.privateBoxedFieldAccessor("font_size_request"),
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "font_size_request",
-                    ),
                 },
             );
         };

src/apprt/gtk-ng/class/surface_child_exited.zig

@@ -42,12 +42,7 @@ const SurfaceChildExitedBanner = extern struct {
                 .{
                     .nick = "Data",
                     .blurb = "The child exit data.",
-                    .accessor = gobject.ext.privateFieldAccessor(
+                    .accessor = C.privateBoxedFieldAccessor("data"),
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "data",
-                    ),
                 },
             );
         };

src/apprt/gtk-ng/class/window.zig

@@ -69,12 +69,7 @@ pub const Window = extern struct {
                 .{
                     .nick = "Config",
                     .blurb = "The configuration that this surface is using.",
-                    .accessor = gobject.ext.privateFieldAccessor(
+                    .accessor = C.privateObjFieldAccessor("config"),
-                        Self,
-                        Private,
-                        &Private.offset,
-                        "config",
-                    ),
                 },
             );
         };