Initial code for listing notifications

src/notification_widget.rs

@@ -0,0 +1,76 @@
+use cascade::cascade;
+use gtk4::{glib, pango, prelude::*, subclass::prelude::*};
+
+use crate::deref_cell::DerefCell;
+use crate::notifications::Notification;
+
+#[derive(Default)]
+pub struct NotificationWidgetInner {
+    box_: DerefCell<gtk4::Box>,
+    summary_label: DerefCell<gtk4::Label>,
+    body_label: DerefCell<gtk4::Label>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for NotificationWidgetInner {
+    const NAME: &'static str = "S76NotificationWidget";
+    type ParentType = gtk4::Widget;
+    type Type = NotificationWidget;
+
+    fn class_init(klass: &mut Self::Class) {
+        klass.set_layout_manager_type::<gtk4::BinLayout>();
+    }
+}
+
+impl ObjectImpl for NotificationWidgetInner {
+    fn constructed(&self, obj: &NotificationWidget) {
+        let summary_label = cascade! {
+            gtk4::Label::new(None);
+            ..set_attributes(Some(&cascade! {
+                pango::AttrList::new();
+                ..insert(pango::Attribute::new_weight(pango::Weight::Bold));
+            }));
+        };
+
+        let body_label = cascade! {
+            gtk4::Label::new(None);
+        };
+
+        let box_ = cascade! {
+            gtk4::Box::new(gtk4::Orientation::Vertical, 0);
+            ..set_parent(obj);
+            ..append(&summary_label);
+            ..append(&body_label);
+        };
+
+        self.box_.set(box_);
+        self.summary_label.set(summary_label);
+        self.body_label.set(body_label);
+    }
+
+    fn dispose(&self, _obj: &NotificationWidget) {
+        self.box_.unparent();
+    }
+}
+
+impl WidgetImpl for NotificationWidgetInner {}
+
+glib::wrapper! {
+    pub struct NotificationWidget(ObjectSubclass<NotificationWidgetInner>)
+        @extends gtk4::Widget;
+}
+
+impl NotificationWidget {
+    pub fn new() -> Self {
+        glib::Object::new(&[]).unwrap()
+    }
+
+    fn inner(&self) -> &NotificationWidgetInner {
+        NotificationWidgetInner::from_instance(self)
+    }
+
+    pub fn set_notification(&self, notification: &Notification) {
+        self.inner().summary_label.set_label(&notification.summary);
+        self.inner().body_label.set_label(&notification.body);
+    }
+}