Initial code for listing notifications

src/notification_list.rs

@@ -0,0 +1,76 @@
+use cascade::cascade;
+use gtk4::{
+    glib::{self, clone},
+    prelude::*,
+    subclass::prelude::*,
+};
+
+use crate::deref_cell::DerefCell;
+use crate::notification_widget::NotificationWidget;
+use crate::notifications::{Notification, Notifications};
+
+#[derive(Default)]
+pub struct NotificationListInner {
+    listbox: DerefCell<gtk4::ListBox>,
+    notifications: DerefCell<Notifications>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for NotificationListInner {
+    const NAME: &'static str = "S76NotificationList";
+    type ParentType = gtk4::Widget;
+    type Type = NotificationList;
+
+    fn class_init(klass: &mut Self::Class) {
+        klass.set_layout_manager_type::<gtk4::BinLayout>();
+    }
+}
+
+impl ObjectImpl for NotificationListInner {
+    fn constructed(&self, obj: &NotificationList) {
+        let listbox = cascade! {
+            gtk4::ListBox::new();
+            ..set_parent(obj);
+        };
+
+        self.listbox.set(listbox);
+    }
+
+    fn dispose(&self, _obj: &NotificationList) {
+        self.listbox.unparent();
+    }
+}
+
+impl WidgetImpl for NotificationListInner {}
+
+glib::wrapper! {
+    pub struct NotificationList(ObjectSubclass<NotificationListInner>)
+        @extends gtk4::Widget;
+}
+
+impl NotificationList {
+    pub fn new(notifications: &Notifications) -> Self {
+        let obj = glib::Object::new::<Self>(&[]).unwrap();
+
+        // XXX disconnect?
+        obj.inner().notifications.set(notifications.clone());
+        notifications.connect_notification_recieved(clone!(@weak obj => move |notification| {
+            obj.handle_notification(&notification);
+        }));
+
+        obj
+    }
+
+    fn inner(&self) -> &NotificationListInner {
+        NotificationListInner::from_instance(self)
+    }
+
+    fn handle_notification(&self, notification: &Notification) {
+        let notification_widget = cascade! {
+            NotificationWidget::new();
+            ..set_notification(notification);
+        };
+
+        self.inner().listbox.prepend(&notification_widget);
+    }
+}