fix: memory leaks in multiple dialogs due to reference cycles (#855)

lact-gui/src/app/graphs_window/plot_component.rs

@@ -9,7 +9,8 @@ use gtk::{
     gdk,
     glib::{subclass::types::ObjectSubclassIsExt, types::StaticType, value::ToValue},
     prelude::{
-        AdjustmentExt, BoxExt, ButtonExt, CheckButtonExt, OrientableExt, PopoverExt, WidgetExt,
+        AdjustmentExt, BoxExt, ButtonExt, CheckButtonExt, ObjectExt, OrientableExt, PopoverExt,
+        WidgetExt,
     },
 };
 use i18n_embed_fl::fl;
@@ -108,17 +109,23 @@ impl relm4::factory::FactoryComponent for PlotComponent {
                         set_actions: gdk::DragAction::MOVE,
                         set_types: &[DynamicIndexValue::static_type()],
 
-                        connect_enter[root] => move |_, _, _| {
-                            root.set_opacity(0.5);
+                        connect_enter[root = root.downgrade()] => move |_, _, _| {
+                            if let Some(root) = root.upgrade() {
+                                root.set_opacity(0.5);
+                            }
                             gdk::DragAction::MOVE
                         },
 
-                        connect_leave[root] => move |_| {
-                            root.set_opacity(1.0);
+                        connect_leave[root = root.downgrade()] => move |_| {
+                            if let Some(root) = root.upgrade() {
+                                root.set_opacity(1.0);
+                            }
                         },
 
-                        connect_drop[root, index, sender] => move |_, value, _, _| {
-                            root.set_opacity(1.0);
+                        connect_drop[root = root.downgrade(), index, sender] => move |_, value, _, _| {
+                            if let Some(root) = root.upgrade() {
+                                root.set_opacity(1.0);
+                            }
 
                             if let Ok(DynamicIndexValue(source_index)) = value.get::<DynamicIndexValue>() {
                                 sender.output(GraphsWindowMsg::SwapPlots(index.clone(), source_index)).unwrap();

lact-gui/src/app/header.rs

@@ -22,8 +22,7 @@ use relm4::{
     factory::FactoryVecDeque,
     prelude::DynamicIndex,
     typed_view::list::{RelmListItem, TypedListView},
-    Component, ComponentController, ComponentParts, ComponentSender, RelmIterChildrenExt,
-    RelmWidgetExt,
+    Component, ComponentParts, ComponentSender, RelmIterChildrenExt, RelmWidgetExt,
 };
 use std::sync::Arc;
 use tracing::debug;
@@ -35,6 +34,8 @@ pub struct Header {
     selector_label: String,
     system_info: SystemInfo,
     device_flags: Vec<DeviceFlag>,
+
+    new_profile_diag: Option<relm4::Controller<NewProfileDialog>>,
 }
 
 #[derive(Debug)]
@@ -302,6 +303,7 @@ impl Component for Header {
             profiles_info: ProfilesInfo::default(),
             system_info,
             device_flags: Vec::new(),
+            new_profile_diag: None,
         };
 
         let gpu_selector = &model.gpu_selector.view;
@@ -395,12 +397,13 @@ impl Component for Header {
             HeaderMsg::CreateProfile => {
                 sender.input(HeaderMsg::ClosePopover);
 
-                let mut diag_controller = NewProfileDialog::builder()
+                let diag_controller = NewProfileDialog::builder()
                     .launch(self.custom_profiles())
                     .forward(sender.output_sender(), |(name, base)| {
                         AppMsg::CreateProfile(name, base)
                     });
-                diag_controller.detach_runtime();
+
+                self.new_profile_diag = Some(diag_controller);
             }
             HeaderMsg::RenameProfile(index) => {
                 sender.input(HeaderMsg::ClosePopover);

lact-gui/src/app/header/new_profile_dialog.rs

@@ -67,8 +67,10 @@ impl Component for NewProfileDialog {
                         set_label: &fl!(I18N, "cancel"),
                         set_hexpand: true,
 
-                        connect_clicked[root] => move |_| {
-                            root.hide();
+                        connect_clicked[root = root.downgrade()] => move |_| {
+                            if let Some(root) = root.upgrade() {
+                                root.close();
+                            }
                         },
                     },
 
@@ -122,7 +124,7 @@ impl Component for NewProfileDialog {
                             .output((self.name_buffer.text().to_string(), base))
                             .unwrap();
 
-                        root.hide();
+                        root.close();
                     }
                 }
             }

lact-gui/src/app/header/profile_rule_window.rs

@@ -2,6 +2,7 @@ pub mod profile_row;
 
 use crate::app::{msg::AppMsg, APP_BROKER};
 use crate::I18N;
+use gtk::prelude::ObjectExt;
 use gtk::{
     pango,
     prelude::{
@@ -64,14 +65,16 @@ impl relm4::Component for ProfileRuleWindow {
             set_default_size: (600, 300),
             set_title: Some(&fl!(I18N, "profile-rules")),
             set_transient_for: Some(&root_window),
-            connect_response[root, sender] => move |_, response| {
-                match response {
-                    gtk::ResponseType::Accept => {
-                        sender.input(ProfileRuleWindowMsg::Save);
-                        root.close();
+            connect_response[root = root.downgrade(), sender] => move |_, response| {
+                if let Some(root) = root.upgrade() {
+                    match response {
+                        gtk::ResponseType::Accept => {
+                            sender.input(ProfileRuleWindowMsg::Save);
+                            root.close();
+                        }
+                        gtk::ResponseType::Cancel => root.close(),
+                        _ => (),
                     }
-                    gtk::ResponseType::Cancel => root.close(),
-                    _ => (),
                 }
             },
 

lact-gui/src/app/pages/software_page.rs

@@ -19,6 +19,8 @@ pub struct SoftwarePage {
 
     vulkan_driver_selector: relm4::Controller<SimpleComboBox<String>>,
     opencl_platform_selector: relm4::Controller<SimpleComboBox<String>>,
+
+    vulkan_window: Option<relm4::Controller<VulkanFeaturesWindow>>,
 }
 
 #[derive(Debug)]
@@ -250,6 +252,7 @@ impl relm4::SimpleComponent for SoftwarePage {
             device_info: None,
             vulkan_driver_selector,
             opencl_platform_selector,
+            vulkan_window: None,
         };
 
         let mut daemon_version = format!("{}-{}", system_info.version, system_info.profile);
@@ -329,12 +332,18 @@ impl relm4::SimpleComponent for SoftwarePage {
             }
             SoftwarePageMsg::ShowVulkanFeatures => {
                 if let Some(vulkan_info) = &self.selected_vulkan_info() {
-                    show_features_window("Vulkan Features", &vulkan_info.features);
+                    self.vulkan_window = Some(show_features_window(
+                        "Vulkan Features",
+                        &vulkan_info.features,
+                    ));
                 }
             }
             SoftwarePageMsg::ShowVulkanExtensions => {
                 if let Some(vulkan_info) = self.selected_vulkan_info() {
-                    show_features_window("Vulkan Extensions", &vulkan_info.extensions);
+                    self.vulkan_window = Some(show_features_window(
+                        "Vulkan Extensions",
+                        &vulkan_info.extensions,
+                    ));
                 }
             }
             SoftwarePageMsg::SelectionChanged => (),
@@ -366,7 +375,10 @@ impl SoftwarePage {
     }
 }
 
-fn show_features_window(title: &str, values: &IndexMap<String, bool>) {
+fn show_features_window(
+    title: &str,
+    values: &IndexMap<String, bool>,
+) -> relm4::Controller<VulkanFeaturesWindow> {
     let values = values
         .into_iter()
         .map(|(name, &supported)| VulkanFeature {
@@ -375,9 +387,9 @@ fn show_features_window(title: &str, values: &IndexMap<String, bool>) {
         })
         .collect();
 
-    let mut window_controller = VulkanFeaturesWindow::builder()
+    let window_controller = VulkanFeaturesWindow::builder()
         .launch((values, title.to_owned()))
         .detach();
-    window_controller.detach_runtime();
     window_controller.widget().present();
+    window_controller
 }

lact-gui/src/app/pages/software_page/vulkan/feature_window.rs

@@ -1,6 +1,6 @@
 use gtk::{
     glib::GString,
-    prelude::{EditableExt, GtkWindowExt, OrientableExt, WidgetExt},
+    prelude::{EditableExt, GtkWindowExt, ObjectExt, OrientableExt, WidgetExt},
     NoSelection,
 };
 use relm4::{
@@ -39,8 +39,10 @@ impl SimpleComponent for VulkanFeaturesWindow {
                         sender.input(AppMsg::FilterChanged(entry.text()));
                     },
 
-                    connect_stop_search[root] => move |_| {
-                        root.close();
+                    connect_stop_search[root = root.downgrade()] => move |_| {
+                        if let Some(root) = root.upgrade() {
+                            root.close();
+                        }
                     },
                 },