refactor: rename app_library application row to app_item

examples/app_library/app_item/mod.rs

@@ -0,0 +1,31 @@
+use gtk4 as gtk;
+mod imp;
+
+use gtk::prelude::*;
+use gtk::subclass::prelude::*;
+use gtk::{gio, glib};
+
+glib::wrapper! {
+    pub struct AppItem(ObjectSubclass<imp::AppItem>)
+        @extends gtk::Widget, gtk::Box;
+}
+
+impl Default for AppItem {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl AppItem {
+    pub fn new() -> Self {
+        glib::Object::new(&[]).expect("Failed to create AppItem")
+    }
+
+    pub fn set_app_info(&self, app_info: &gio::AppInfo) {
+        let self_ = imp::AppItem::from_instance(self);
+        self_.name.set_text(&app_info.name());
+        if let Some(icon) = app_info.icon() {
+            self_.image.set_from_gicon(&icon);
+        }
+    }
+}