add app groups

examples/app_library/app_group/mod.rs

@@ -0,0 +1,40 @@
+mod imp;
+
+use gdk4::glib::Object;
+use glib::ObjectExt;
+use glib::ToVariant;
+use gtk4::glib;
+use serde::{Deserialize, Serialize};
+
+glib::wrapper! {
+    pub struct AppGroup(ObjectSubclass<imp::AppGroup>);
+}
+
+impl AppGroup {
+    pub fn new(data: AppGroupData) -> Self {
+        let self_: Self = Object::new(&[
+            ("id", &data.id),
+            ("name", &data.name),
+            ("mutable", &data.mutable),
+            ("icon", &data.icon),
+            ("category", &data.category),
+        ])
+        .expect("Failed to create `ApplicationObject`.");
+        if let Err(e) = self_.set_property("appnames", data.app_names.to_variant()) {
+            println!("failed to set category icon property");
+            dbg!(e);
+        };
+        self_
+    }
+}
+
+// Object holding the state
+#[derive(Default, Serialize, Deserialize, Clone)]
+pub struct AppGroupData {
+    pub id: u32,
+    pub name: String,
+    pub icon: String,
+    pub mutable: bool,
+    pub app_names: Vec<String>,
+    pub category: String,
+}