fix: replace logout dialog with a toast (#758) (#816)

## Description

Replace logout message with toast
[HIG](https://developer.gnome.org/hig/patterns/feedback/toasts.html)

Fixes #758 

## Type of change

<!-- What type of change does your pull request introduce? Put an `x` in
the appropriate box . -->
- [ ] Bugfix (Change which fixes an issue)
- [ ] New feature (Change which adds new functionality)
- [x] Enhancement (Change which slightly improves existing code)
- [ ] Breaking change (This change will introduce incompatibility with
existing functionality)

## Testing

- [x] I have tested my changes and verified that they work as expected
<!-- Make sure you did this step before marking your PR as ready for
merge. -->

data/gradience.gresource.xml

@@ -9,7 +9,6 @@
     <file preprocess="xml-stripblanks">ui/custom_css_group.ui</file>
     <file preprocess="xml-stripblanks">ui/error_list_row.ui</file>
     <file preprocess="xml-stripblanks">ui/explore_preset_row.ui</file>
-    <file preprocess="xml-stripblanks">ui/log_out_dialog.ui</file>
     <file preprocess="xml-stripblanks">ui/monet_theming_group.ui</file>
     <file preprocess="xml-stripblanks">ui/no_plugin_window.ui</file>
     <file preprocess="xml-stripblanks">ui/option_row.ui</file>

data/ui/meson.build

@@ -4,7 +4,6 @@ blueprints = custom_target('blueprints',
     'palette_shades.blp',
     'option_row.blp',
     'window.blp',
-    'log_out_dialog.blp',
     'monet_theming_group.blp',
     'app_type_dialog.blp',
     'custom_css_group.blp',

gradience/frontend/dialogs/meson.build

@@ -3,7 +3,6 @@ dialogsdir = 'gradience/frontend/dialogs'
 gradience_sources = [
     '__init__.py',
     'app_type_dialog.py',
-    'log_out_dialog.py',
     'save_dialog.py',
     'unsupported_shell_dialog.py'
 ]

gradience/frontend/main.py

@@ -41,7 +41,6 @@
 from gradience.frontend.views.preferences_window import GradiencePreferencesWindow
 
 from gradience.frontend.dialogs.app_type_dialog import GradienceAppTypeDialog
-from gradience.frontend.dialogs.log_out_dialog import GradienceLogOutDialog
 from gradience.frontend.dialogs.save_dialog import GradienceSaveDialog
 from gradience.frontend.widgets.custom_css_group import GradienceCustomCSSGroup
 
@@ -616,11 +615,12 @@ def apply_color_scheme(self, widget, response):
             self.plugins_list.apply()
 
             self.win.toast_overlay.add_toast(
-                Adw.Toast(title=_("Preset set successfully"))
+                Adw.Toast(title=_("Preset set successfully. You may need to restart some apps and log out."))
             )
 
-            dialog = GradienceLogOutDialog(self.win)
-            dialog.present()
+            toast = Adw.Toast()
+            toast.set_title(_("Preset set successfully. You may need to restart some apps and log out."))
+            self.win.toast_overlay.add_toast(toast)
 
     def show_preferences(self, *_args):
         prefs = GradiencePreferencesWindow(self.win)

gradience/frontend/widgets/reset_preset_group.py

@@ -22,8 +22,6 @@
 from gradience.backend.logger import Logger
 from gradience.backend.theming.preset import PresetUtils
 
-from gradience.frontend.dialogs.log_out_dialog import GradienceLogOutDialog
-
 logging = Logger()
 
 
@@ -57,8 +55,10 @@ def on_libadw_restore_button_clicked(self, *_args):
                 Adw.Toast(title=_("Unable to restore GTK 4 backup"))
             )
         else:
-            dialog = GradienceLogOutDialog(self.win)
-            dialog.present()
+            toast = Adw.Toast(
+                title=_("GTK 4 preset has been restored. Please log out to apply changes."),
+            )
+            self.parent.add_toast(toast)
 
     @Gtk.Template.Callback()
     def on_libadw_reset_button_clicked(self, *_args):
@@ -69,8 +69,10 @@ def on_libadw_reset_button_clicked(self, *_args):
                 Adw.Toast(title=_("Unable to delete current preset"))
             )
         else:
-            dialog = GradienceLogOutDialog(self.win)
-            dialog.present()
+            toast = Adw.Toast(
+                title=_("GTK 4 theme has been reset. Please log out to apply changes."),
+            )
+            self.parent.add_toast(toast)
 
 
     @Gtk.Template.Callback()
@@ -82,8 +84,10 @@ def on_gtk3_restore_button_clicked(self, *_args):
                 Adw.Toast(title=_("Unable to restore GTK 3 backup"))
             )
         else:
-            dialog = GradienceLogOutDialog(self.win)
-            dialog.present()
+            toast = Adw.Toast(
+                title=_("GTK 3 preset has been restored. Please log out to apply changes."),
+            )
+            self.parent.add_toast(toast)
 
     @Gtk.Template.Callback()
     def on_gtk3_reset_button_clicked(self, *_args):
@@ -94,5 +98,7 @@ def on_gtk3_reset_button_clicked(self, *_args):
                 Adw.Toast(title=_("Unable to delete current preset"))
             )
         else:
-            dialog = GradienceLogOutDialog(self.win)
-            dialog.present()
+            toast = Adw.Toast(
+                title=_("GTK 3 theme has been reset. Please log out to apply changes."),
+            )
+            self.parent.add_toast(toast)