Add support for "action-icons" capability

data/application.css

@@ -60,7 +60,7 @@ window,
     margin-top: 12px;
 }
 
-.notification .buttonbox button {
+.notification .buttonbox.text-buttons button {
     min-width: 65px;
 }
 

src/Bubble.vala

@@ -145,10 +145,27 @@ public class Notifications.Bubble : AbstractBubble {
                 };
                 action_area.add_css_class ("buttonbox");
 
-                foreach (var button in notification.buttons) {
-                    action_area.append (new Gtk.Button.with_label (button.label) {
-                        action_name = button.action_name
-                    });
+                if (!notification.action_icons) {
+                    action_area.add_css_class ("text-buttons");
+                }
+
+                foreach (var action in notification.buttons) {
+                    var button = new Gtk.Button () {
+                        action_name = action.action_name
+                    };
+
+                    if (notification.action_icons) {
+                        var action_name_split = action.action_name.split (".");
+
+                        button.child = new Gtk.Image.from_icon_name (action_name_split[action_name_split.length - 1]) {
+                            icon_size = LARGE
+                        };
+                        button.add_css_class (Granite.CssClass.CIRCULAR);
+                    } else {
+                        button.child = new Gtk.Label (action.label);
+                    }
+
+                    action_area.append (button);
                 }
 
                 attach (action_area, 0, 2, 2);

src/DBus.vala

@@ -71,6 +71,7 @@ public class Notifications.Server : Object {
 
     public string [] get_capabilities () throws DBusError, IOError {
         return {
+            "action-icons",
             "actions",
             "body",
             "body-markup",
@@ -120,8 +121,13 @@ public class Notifications.Server : Object {
         if (hints.contains (X_CANONICAL_PRIVATE_SYNCHRONOUS)) {
             send_confirmation (app_icon, hints);
         } else {
-            var notification = new Notification (app_name, app_icon, summary, body, hints);
-            notification.buttons = new GenericArray<Notification.Button?> (actions.length / 2);
+            var notification = new Notification (app_name, app_icon, summary, body, hints) {
+                buttons = new GenericArray<Notification.Button?> (actions.length / 2)
+            };
+
+            if ("action-icons" in hints && hints["action-icons"].is_of_type (VariantType.BOOLEAN)) {
+                notification.action_icons = hints["action-icons"].get_boolean ();
+            }
 
             // validate actions
             for (var i = 0; i < actions.length; i += 2) {

src/Notification.vala

@@ -38,6 +38,7 @@ public class Notifications.Notification : GLib.Object {
     public Variant default_action_target { get; set; }
 
     public GenericArray<Button?> buttons { get; set; }
+    public bool action_icons { get; set; default = false; }
 
     private static Regex entity_regex;
     private static Regex tag_regex;