library: Ported ViewSwitcher to rust

src/Library/demos/View Switcher/code.rs

@@ -0,0 +1,47 @@
+use crate::workbench;
+use adw::prelude::*;
+
+use crate::glib::clone;
+use gtk::glib;
+use std::cell::Cell;
+use std::rc::Rc;
+
+pub fn main() {
+    let notifications_page: adw::ViewStackPage = workbench::builder().object("page3").unwrap();
+    let notification_list: gtk::ListBox = workbench::builder().object("notification_list").unwrap();
+
+    let notification_count = Rc::new(Cell::new(5));
+    notifications_page.set_badge_number(notification_count.get());
+
+    for _ in 0..notification_count.get() {
+        let notification_row = adw::ActionRow::builder()
+            .title("Notification")
+            .selectable(false)
+            .build();
+
+        let button = gtk::Button::builder()
+            .halign(gtk::Align::Center)
+            .valign(gtk::Align::Center)
+            .margin_top(10)
+            .margin_bottom(10)
+            .icon_name("check-plain-symbolic")
+            .build();
+
+        button.connect_clicked(clone!(
+            @weak notification_count, @weak notifications_page,
+            @weak notification_list, @weak notification_row => move |_| {
+                notification_count.set(notification_count.get() - 1);
+                notifications_page.set_badge_number(notification_count.get());
+                notification_list.remove(&notification_row);
+
+                if notifications_page.badge_number() == 0 {
+                    notifications_page.set_needs_attention(false);
+                }
+            }
+        ));
+
+        notification_row.add_suffix(&button);
+
+        notification_list.append(&notification_row);
+    }
+}