improv: alignment of sub page header button

app/src/app.rs

@@ -651,7 +651,7 @@ impl SettingsApp {
         let mut column_widgets = Vec::with_capacity(1);
 
         if let Some(parent) = page.parent {
-            column_widgets.push(navigation::sub_page_header(
+            column_widgets.push(crate::widget::sub_page_header(
                 page.title.as_str(),
                 self.pages.info[parent].title.as_str(),
                 Message::Page(parent),
@@ -736,7 +736,7 @@ impl SettingsApp {
 
         for entity in sub_pages.iter().copied() {
             let sub_page = &self.pages.info[entity];
-            page_list = page_list.push(navigation::page_list_item(
+            page_list = page_list.push(crate::widget::page_list_item(
                 sub_page.title.as_str(),
                 sub_page.description.as_str(),
                 &sub_page.icon_name,

app/src/widget/mod.rs

@@ -1,12 +1,11 @@
 // Copyright 2023 System76 <info@system76.com>
 // SPDX-License-Identifier: GPL-3.0-only
 
-use apply::Apply;
 use cosmic::iced::Length;
 use cosmic::widget::{
-    button, column, container, divider, horizontal_space, row, settings, text, vertical_space,
+    button, column, container, divider, horizontal_space, icon, list, row, settings, text, vertical_space,
 };
-use cosmic::Element;
+use cosmic::{theme, Apply, Element};
 use cosmic_settings_page as page;
 
 #[must_use]
@@ -76,3 +75,56 @@ pub fn display_container<'a, Message: 'a>(widget: Element<'a, Message>) -> Eleme
         .padding([0, 0, 8, 0])
         .into()
 }
+
+
+
+#[must_use]
+pub fn page_list_item<'a, Message: 'static + Clone>(
+    title: &'a str,
+    description: &'a str,
+    icon: &'a str,
+    message: Message,
+) -> Element<'a, Message> {
+    let control = row::with_children(vec![
+        horizontal_space(Length::Fill).into(),
+        icon::from_name("go-next-symbolic").size(16).into(),
+    ]);
+
+    cosmic::widget::settings::item::builder(title)
+        .description(description)
+        .icon(icon::from_name(icon).size(16))
+        .control(control)
+        .spacing(16)
+        .apply(container)
+        .padding([20, 24])
+        .style(theme::Container::custom(list::style))
+        .apply(button)
+        .style(theme::Button::Transparent)
+        .on_press(message)
+        .into()
+}
+
+#[must_use]
+pub fn sub_page_header<'a, Message: 'static + Clone>(
+    sub_page: &'a str,
+    parent_page: &'a str,
+    on_press: Message,
+) -> Element<'a, Message> {
+    let previous_button = button::icon(icon::from_name("go-previous-symbolic"))
+        .extra_small()
+        .padding(0)
+        .label(parent_page)
+        .spacing(4)
+        .style(button::Style::Link)
+        .on_press(on_press);
+
+    let sub_page_header = row::with_capacity(2)
+        .push(text::title3(sub_page))
+        .push(horizontal_space(Length::Fill));
+
+    column::with_capacity(2)
+        .push(previous_button)
+        .push(sub_page_header)
+        .spacing(6)
+        .into()
+}