Some Vala things

[bugaevc]

I'm surprised about the g_type_ensure thing. I remember having to add one of those lines myself, so now I got the idea that I should teach Vala to just do it automatically, and turns out it already does, and everything seems to just work without them indeed.

[GeopJr]

it already does

is this something done in a recent release? Because ~half year ago it was still a problem #1170

[GeopJr]

note that I couldn't reliably reproduce the issues #1170 fixed (mostly freezes and crashes when using custom widgets in builder files - specifically the custom emoji picker in the profile editor), but had more than 1 reports about it and it was targeted down after debugging their installations; even if they were flatpaks 🤷

If it's done in a recent release, we might have to check in meson and ensure them behind a flag

[bugaevc]

No, it's been doing that since https://gitlab.gnome.org/GNOME/vala/-/commit/8f9979da7a75cb91a46e47e61bf35a41c8ff8083

Maybe there is a Heisenbug in Vala (that I could fix)? How do I reproduce that?

[GeopJr]

How do I reproduce that?

If I remember correctly, the common reproducer was opening the profile editor (open your profile => pencil headerbar button) without constructing a custom emoji picker prior (e.g. without opening the composer)

[GeopJr]

For completeness, if Vala is supposed to generate g_type_ensures in the same file, it just doesn't seem to do so:

left is with the type ensure commented out and that's pretty much the only change in the generated c code

[bugaevc]

It does so in instance init (below in your screenshot), right before gtk_widget_init_template

[GeopJr]

It doesn't seem to do so in Vala 0.56.18, the following is identical between the two files:

[GeopJr]

ProfileEdit.c.txt
ProfileEdit_with_manual_ensure.c.txt

[bugaevc]

Aha, I can reproduce that. It's indeed missing an ensure for TubaWidgetsCustomEmojiChooser. I'll look into it.

(By the way, a thought for another day: it would make more sense to me if in C, these classes only had Tuba as their prefix, not TubaWidgets or TubaDialogs or TubaViews, so the emoji chooser would be TubaCustomEmojiChooser. You can accomplish that by setting [CCode (cprefix = "Tuba", lower_case_cprefix = "tuba_")] on namespace Tuba.Widgets etc.)

[GeopJr]

Not opposed to it as long as it doesn't create conflicts (Tuba.API.Account vs Tuba.Widgets.Account); we had enough of them in vala land (GLib.DateTime vs Tuba.DateTime)

[bugaevc]

Okay, so I have a Vala branch that fixes this. Other than Tuba.Dialogs.ProfileEdit / g_type_ensure (TUBA_WIDGETS_TYPE_CUSTOM_EMOJI_CHOOSER);, the only type affected seems to be Tuba.Dialogs.Preferences, which now has:

+	g_type_ensure (TUBA_TYPE_COLOR_SCHEME_LIST_MODEL);
+	g_type_ensure (TUBA_TYPE_COLOR_SCHEME_LIST_ITEM);
+	g_type_ensure (TUBA_INSTANCE_ACCOUNT_TYPE_VISIBILITY);
+	g_type_ensure (TUBA_UTILS_LOCALES_TYPE_LOCALE);
+	g_type_ensure (TUBA_INSTANCE_ACCOUNT_TYPE_STATUS_CONTENT_TYPE);

Does that match your expectations, or do you know of more instances of missing g_type_ensures?

P.S. https://floss.social/@bugaevc/114556715462967488, any idea?

[GeopJr]

Okay, so I have a Vala branch that fixes this. Other than Tuba.Dialogs.ProfileEdit / g_type_ensure (TUBA_WIDGETS_TYPE_CUSTOM_EMOJI_CHOOSER);, the only type affected seems to be Tuba.Dialogs.Preferences, which now has:

Does that match your expectations, or do you know of more instances of missing g_type_ensures?

Awesome, thanks! Yes I think it's alright, the missing g_type_ensure on the Preferences dialog were never a problem so I didn't include them (all of those are used on startup in other parts).

P.S. https://floss.social/@bugaevc/114556715462967488, any idea?

I think the main problem is that we do keep a reference to the main window under app, you can set it to null on shutdown and it should hit them:

diff --git a/src/Application.vala b/src/Application.vala
index d8ba5539..50add463 100644
--- a/src/Application.vala
+++ b/src/Application.vala
@@ -391,6 +391,7 @@ namespace Tuba {
                        #endif
                        network.flush_cache ();
 
+                       app.main_window = null;
                        base.shutdown ();
                }
 

[GeopJr]

Maybe I should write a more graceful shutdown process...

[bugaevc]

I did this instead:

diff --git a/src/Application.vala b/src/Application.vala
index d8ba5539..8e2dc82e 100644
--- a/src/Application.vala
+++ b/src/Application.vala
@@ -32,7 +32,7 @@ namespace Tuba {
 	public class Application : Adw.Application {
 
 		public GLib.ProxyResolver? proxy { get; set; default=null; }
-		public Dialogs.MainWindow? main_window { get; set; }
+		public unowned Dialogs.MainWindow? main_window { get; set; }
 		public Dialogs.NewAccount? add_account_window { get; set; }
 		public bool is_mobile { get; set; default=false; }
 		public bool is_online { get; private set; default=true; }
diff --git a/src/Dialogs/MainWindow.vala b/src/Dialogs/MainWindow.vala
index bf8e96c6..1ad4bbd6 100644
--- a/src/Dialogs/MainWindow.vala
+++ b/src/Dialogs/MainWindow.vala
@@ -261,4 +261,11 @@ public class Tuba.Dialogs.MainWindow: Adw.ApplicationWindow, Saveable {
 
 		last_view = view;
 	}
+
+	public override void dispose () {
+		if (app.main_window == this) {
+			app.main_window = null;
+		}
+		base.dispose ();
+	}
 }

Could've also used WeakRef I guess. But it works, thanks! (And indeed immediately runs into https://gitlab.gnome.org/GNOME/gtk/-/issues/5834 w/ my Vala patch to insert gtk_widget_dispose_template calls.)