DEV: Use the new topic-list APIs (#622)

assets/javascripts/discourse/connectors/topic-list-after-columns/assign-buttons.hbr

@@ -1 +1 @@
-{{raw "assign-topic-buttons" topic=context.topic}}
+{{!-- has-modern-replacement --}}{{raw "assign-topic-buttons" topic=context.topic}}

assets/javascripts/discourse/initializers/assignment-list-actions.gjs

@@ -0,0 +1,34 @@
+import { withPluginApi } from "discourse/lib/plugin-api";
+import AssignedTopicListColumn from "../components/assigned-topic-list-column";
+
+const ASSIGN_LIST_ROUTES = ["userActivity.assigned", "group.assigned.show"];
+
+const AssignActionsCell = <template>
+  <td class="assign-topic-buttons">
+    <AssignedTopicListColumn @topic={{@topic}} />
+  </td>
+</template>;
+
+export default {
+  name: "assignment-list-dropdowns",
+
+  initialize(container) {
+    const router = container.lookup("service:router");
+
+    withPluginApi("1.39.0", (api) => {
+      api.registerValueTransformer(
+        "topic-list-columns",
+        ({ value: columns }) => {
+          if (ASSIGN_LIST_ROUTES.includes(router.currentRouteName)) {
+            columns.add("assign-actions", {
+              item: AssignActionsCell,
+              after: "activity",
+            });
+          }
+
+          return columns;
+        }
+      );
+    });
+  },
+};

assets/javascripts/discourse/raw-templates/assign-topic-buttons.hbr

@@ -1 +1 @@
-{{{view.html}}}
+{{!-- has-modern-replacement --}}{{{view.html}}}