Implement program editor

data/ui/program_tile.blp

@@ -1,32 +1,46 @@
 using Gtk 4.0;
 
-template $MusicusProgramTile : Gtk.FlowBoxChild {
-  styles ["program", "card", "activatable"]
-  
+template $MusicusProgramTile: Gtk.FlowBoxChild {
+  styles [
+    "program-tile",
+    "card",
+    "activatable",
+  ]
+
   Gtk.Box {
     orientation: vertical;
-  
+
     Gtk.Button edit_button {
-      styles ["flat", "circular"]
       halign: end;
       icon-name: "document-edit-symbolic";
+      clicked => $edit_button_clicked() swapped;
+
+      styles [
+        "flat",
+        "circular",
+      ]
     }
 
     Gtk.Label title_label {
-      styles ["title"]
       halign: start;
       margin-top: 24;
       wrap: true;
       max-width-chars: 0;
 
+      styles [
+        "title",
+      ]
     }
-    
+
     Gtk.Label description_label {
-      styles ["description"]
       margin-top: 6;
       halign: start;
       wrap: true;
       max-width-chars: 0;
+
+      styles [
+        "description",
+      ]
     }
   }
-}
+}