Fixed segfault when reloading config

src/controlCenter/controlCenter.vala

@@ -148,11 +148,10 @@ namespace SwayNotificationCenter {
         /** Adds all custom widgets. Removes previous widgets */
         public void add_widgets () {
             // Remove all widgets
-            while (widgets.length > 0) {
-                uint i = widgets.length - 1;
-                widgets.index (i).destroy ();
-                widgets.remove_index (i);
+            foreach (var widget in widgets.data) {
+                box.remove(widget);
             }
+            widgets.remove_range (0, widgets.length);
 
             string[] w = ConfigModel.instance.widgets.data;
             if (w.length == 0) w = DEFAULT_WIDGETS;

src/controlCenter/widgets/baseWidget.vala

@@ -39,10 +39,10 @@ namespace SwayNotificationCenter.Widgets {
 
         public virtual void on_cc_visibility_change (bool value) {}
 
-        protected void get_prop<T> (Json.Object config, string value_key, ref T value) {
+        protected T? get_prop<T> (Json.Object config, string value_key) {
             if (!config.has_member (value_key)) {
-                warning ("%s: Config doesn't have key: %s!\n", key, value_key);
-                return;
+                debug ("%s: Config doesn't have key: %s!\n", key, value_key);
+                return null;
             }
             var member = config.get_member (value_key);
 
@@ -57,18 +57,17 @@ namespace SwayNotificationCenter.Widgets {
                          key,
                          typeof (T).name (),
                          member.get_value_type ().name ());
-                return;
+                return null;
             }
             switch (generic_base_type) {
                 case Type.STRING:
-                    value = member.get_string ();
-                    return;
+                    return member.get_string ();
                 case Type.INT64:
-                    value = member.get_int ();
-                    return;
+                    return (int) member.get_int ();
                 case Type.BOOLEAN:
-                    value = member.get_boolean ();
-                    return;
+                    return member.get_boolean ();
+                default:
+                    return null;
             }
         }
     }

src/controlCenter/widgets/dnd/dnd.vala

@@ -18,7 +18,8 @@ namespace SwayNotificationCenter.Widgets {
             Json.Object ? config = get_config (this);
             if (config != null) {
                 // Get title
-                get_prop<string> (config, "text", ref title);
+                string? title = get_prop<string> (config, "text");
+                if (title != null) this.title = title;
             }
 
             // Title

src/controlCenter/widgets/label/label.vala

@@ -18,9 +18,11 @@ namespace SwayNotificationCenter.Widgets {
             Json.Object ? config = get_config (this);
             if (config != null) {
                 // Get text
-                get_prop<string> (config, "text", ref text);
+                string? text = get_prop<string> (config, "text");
+                if (text != null) this.text = text;
                 // Get max lines
-                get_prop<int> (config, "max-lines", ref max_lines);
+                int? max_lines = get_prop<int> (config, "max-lines");
+                if (max_lines != null) this.max_lines = max_lines;
             }
 
             label_widget = new Gtk.Label (null);

src/controlCenter/widgets/mpris/mpris.vala

@@ -82,10 +82,12 @@ namespace SwayNotificationCenter.Widgets.Mpris {
             Json.Object ? config = get_config (this);
             if (config != null) {
                 // Get image-size
-                get_prop<int> (config, "image-size", ref mpris_config.image_size);
+                int? image_size = get_prop<int> (config, "image-size");
+                if (image_size != null) mpris_config.image_size = image_size;
 
                 // Get image-border-radius
-                get_prop<int> (config, "image-radius", ref mpris_config.image_radius);
+                int? image_radius = get_prop<int> (config, "image-radius");
+                if (image_radius != null) mpris_config.image_radius = image_radius;
                 // Clamp the radius
                 mpris_config.image_radius = mpris_config.image_radius.clamp (
                     0, (int) (mpris_config.image_size * 0.5));

src/controlCenter/widgets/title/title.vala

@@ -20,10 +20,14 @@ namespace SwayNotificationCenter.Widgets {
             Json.Object ? config = get_config (this);
             if (config != null) {
                 // Get title
-                get_prop<string> (config, "text", ref title);
+                string? title = get_prop<string> (config, "text");
+                if (title != null) this.title = title;
                 // Get has clear-all-button
-                get_prop<bool> (config, "clear-all-button", ref has_clear_all_button);
-                get_prop<string> (config, "button-text", ref button_text);
+                bool? has_clear_all_button = get_prop<bool> (config, "clear-all-button");
+                if (has_clear_all_button != null) this.has_clear_all_button = has_clear_all_button;
+                // Get button text
+                string? button_text = get_prop<string> (config, "button-text");
+                if (button_text != null) this.button_text = button_text;
             }
 
             title_widget = new Gtk.Label (title);

src/swayncDaemon/swayncDaemon.vala

@@ -153,6 +153,8 @@ namespace SwayNotificationCenter {
 
         /** Reloads the config file */
         public void reload_config () throws Error {
+            print("\n");
+            message("Reloading config\n");
             ConfigModel.reload_config ();
             noti_daemon.control_center.add_widgets ();
         }