Add optional badge to Catalog Category label (#5156)

* Add optional badge to Catalog Category label.

Signed-off-by: Panu Horsmalahti <phorsmalahti@mirantis.com>

* Don't render badge container if there is no badge. Change CatalogCategoryLabel interface.

Signed-off-by: Panu Horsmalahti <phorsmalahti@mirantis.com>

* Add badgeBackgroundColor CSS variable for extensions. Regenerate theme-vars.css.

Signed-off-by: Panu Horsmalahti <phorsmalahti@mirantis.com>

* Use category as prop in CatalogCategoryLabel

Signed-off-by: Panu Horsmalahti <phorsmalahti@mirantis.com>

src/common/__tests__/catalog-entity.test.tsx

@@ -3,15 +3,18 @@
  * Licensed under MIT License. See LICENSE in root directory for more information.
  */
 
+import React from "react";
 import { CatalogCategory, CatalogCategorySpec } from "../catalog";
 
-class TestCatalogCategory extends CatalogCategory {
+class TestCatalogCategoryWithoutBadge extends CatalogCategory {
   public readonly apiVersion = "catalog.k8slens.dev/v1alpha1";
   public readonly kind = "CatalogCategory";
+
   public metadata = {
     name: "Test Category",
     icon: "",
   };
+
   public spec: CatalogCategorySpec = {
     group: "entity.k8slens.dev",
     versions: [],
@@ -21,10 +24,28 @@ class TestCatalogCategory extends CatalogCategory {
   };
 }
 
+class TestCatalogCategoryWithBadge extends TestCatalogCategoryWithoutBadge {
+  getBadge() {
+    return (<div>Test Badge</div>);
+  }
+}
+
 describe("CatalogCategory", () => {
   it("returns name", () => {
-    const category = new TestCatalogCategory();
+    const category = new TestCatalogCategoryWithoutBadge();
 
     expect(category.getName()).toEqual("Test Category");
   });
+
+  it("doesn't return badge by default", () => {
+    const category = new TestCatalogCategoryWithoutBadge();
+
+    expect(category.getBadge()).toEqual(null);
+  });
+
+  it("returns a badge", () => {
+    const category = new TestCatalogCategoryWithBadge();
+
+    expect(category.getBadge()).toBeTruthy();
+  });
 });

src/common/catalog/catalog-entity.ts

@@ -180,6 +180,15 @@ export abstract class CatalogCategory extends (EventEmitter as new () => TypedEm
     return this.metadata.name;
   }
 
+  /**
+   * Get the badge of this category.
+   * Defaults to no badge.
+   * The badge is displayed next to the Category name in the Catalog Category menu
+   */
+  public getBadge(): React.ReactNode {
+    return null;
+  }
+
   /**
    * Add a filter for menu items of catalogAddMenu
    * @param fn The function that should return a truthy value if that menu item should be displayed