💥 fix(bar/special-workspaces): correct usage of getSymbolicIcon() method

also improved the `getSymbolicIcon()` method's code

ags/scripts/apps.ts

@@ -83,8 +83,9 @@ export function getAppIcon(app: (string|AstalApps.Application)): (string|undefin
 }
 
 export function getSymbolicIcon(app: (string|AstalApps.Application)): (string|undefined) {
-    if (Astal.Icon.lookup_icon(`${getAppIcon(app)}-symbolic`))
-        return `${getAppIcon(app)}-symbolic`
+    const icon = getAppIcon(app);
 
-    return undefined;
+    return (icon && Astal.Icon.lookup_icon(`${icon}-symbolic`)) ?
+        `${icon}-symbolic`
+    : undefined;
 }

ags/widget/bar/SpecialWorkspaces.ts

@@ -1,7 +1,7 @@
 import { bind, Variable } from "astal";
 import { Gtk, Widget } from "astal/gtk3"
 import AstalHyprland from "gi://AstalHyprland";
-import { getSymbolicIcon } from "../../scripts/apps";
+import { getAppIcon, getSymbolicIcon } from "../../scripts/apps";
 
 export const SpecialWorkspaces: (() => Gtk.Widget) = () => new Widget.EventBox({
     className: "special-ws-eventbox",
@@ -20,16 +20,19 @@ export const SpecialWorkspaces: (() => Gtk.Widget) = () => new Widget.EventBox({
                         return name.charAt(0).toUpperCase().concat(name.substring(1, name.length));
                     }),
                     child: new Widget.Box({
-                        child: new Widget.Icon({
+                        child: bind(workspace, "lastClient").as(lastClient => 
+                            new Widget.Icon({
                                 className: "last-app-icon",
                                 visible: Variable.derive([
                                     bind(workspace, "lastClient"),
                                     bind(AstalHyprland.get_default(), "focusedWorkspace")
                                 ], (lastClient, focusedWorkspace) => focusedWorkspace?.id === workspace.id ?
                                      false : Boolean(lastClient))(),
-                            icon: bind(workspace, "lastClient").as((lastClient) =>
-                                getSymbolicIcon(lastClient) ?? "image-missing")
+                                icon: bind(lastClient, "initialClass").as((initialClass) =>
+                                    getSymbolicIcon(initialClass) ?? getAppIcon(initialClass) ?? 
+                                        "application-x-executable-symbolic")
                             } as Widget.IconProps)
+                        )
                     } as Widget.BoxProps),
                     onClickRelease: () => AstalHyprland.get_default().dispatch(
                         "togglespecialworkspace", workspace.name.replace(/^special\:/, "")