Extract Card and CardArea classes

client/src/activities_view.vala

@@ -1,37 +1,16 @@
 namespace StudySystemClient {
 	public class ActivitiesView : Gtk.Box {
 		private Client client;
-		private Gtk.FlowBox card_container;
 		private RefreshingIndicator refreshing_indicator;
+		private CardArea card_area;
 
 		public ActivitiesView(Client client)  {
-			Object(orientation: Gtk.Orientation.VERTICAL,
-				   hexpand: true,
-				   vexpand: true,
-				   margin_top: 0,
-				   margin_bottom: 0,
-				   margin_start: 0,
-				   margin_end: 0);
-
 			this.client = client;
-
+			card_area = new CardArea();
-			card_container = new Gtk.FlowBox();
-			card_container.homogeneous = true;
-			card_container.min_children_per_line = 1;
-			card_container.max_children_per_line = 1;
-			card_container.selection_mode = Gtk.SelectionMode.NONE;
-			card_container.valign = Gtk.Align.START;
-
-			var scrolled_window = new Gtk.ScrolledWindow();
-			scrolled_window.hscrollbar_policy = Gtk.PolicyType.NEVER;
-			scrolled_window.hexpand = true;
-			scrolled_window.vexpand = true;
-			scrolled_window.add_css_class("card-container");
-			scrolled_window.set_child(card_container);
 
 			var overlay = new Gtk.Overlay();
 			overlay.hexpand = overlay.vexpand = true;
-			overlay.set_child(scrolled_window);
+			overlay.set_child(card_area);
 			this.append(overlay);
 
 			refreshing_indicator = new RefreshingIndicator(overlay);
@@ -43,11 +22,11 @@ namespace StudySystemClient {
 			refreshing_indicator.show();
 			try {
 				var activities = yield client.list_activities();
-				card_container.remove_all();
+				card_area.clear();
 				foreach (var activity in activities) {
 					var card = new ActivityCard(activity);
 					card.session_logged.connect(log_session);
-					card_container.append(card);
+					card_area.add(card);
 				}
 			} catch (ClientError e) {
 				stderr.printf("Error refreshing activities: %s\n",

client/src/activity_card.vala

@@ -1,10 +1,10 @@
 namespace StudySystemClient {
-	public class ActivityCard : Gtk.Frame {
+	public class ActivityCard : Card {
 		public signal void session_logged(string subject, ActivityType type,
 										  int minutes);
 
 		public ActivityCard(Activity activity) {
-			add_css_class("card");
+			base();
 
 			var subject = new Gtk.Label(activity.subject);
 			subject.halign = Gtk.Align.START;

client/src/card.vala

@@ -0,0 +1,40 @@
+namespace StudySystemClient {
+	public class Card : Gtk.Frame {
+		public Card() {
+			hexpand = true;
+			add_css_class("card");
+		}
+	}
+
+	public class CardArea : Gtk.Box {
+		private Gtk.FlowBox flow_box;
+
+		public CardArea() {
+			hexpand = vexpand = true;
+			margin_top = margin_bottom = margin_start = margin_end = 0;
+
+			flow_box = new Gtk.FlowBox();
+			flow_box.homogeneous = true;
+			flow_box.min_children_per_line = 1;
+			flow_box.max_children_per_line = 1;
+			flow_box.selection_mode = Gtk.SelectionMode.NONE;
+			flow_box.valign = Gtk.Align.START;
+
+			var scrolled_window = new Gtk.ScrolledWindow();
+			scrolled_window.hscrollbar_policy = Gtk.PolicyType.NEVER;
+			scrolled_window.hexpand = scrolled_window.vexpand = true;
+			scrolled_window.add_css_class("card-container");
+			scrolled_window.set_child(flow_box);
+
+			append(scrolled_window);
+		}
+
+		public void clear() {
+			flow_box.remove_all();
+		}
+
+		public void add(Card card) {
+			flow_box.append(card);
+		}
+	}
+}

client/src/meson.build

@@ -13,6 +13,7 @@ lib = library(
     'activities_view.vala',
     'activity.vala',
     'activity_card.vala',
+    'card.vala',
     'client.vala',
     'connection.vala',
     'der.vala',