Follow as a clean architecture

src/content/controllers/FollowSlaveController.ts

@@ -0,0 +1,32 @@
+import * as messages from '../../shared/messages';
+import FollowSlaveUseCase from '../usecases/FollowSlaveUseCase';
+
+export default class FollowSlaveController {
+  private usecase: FollowSlaveUseCase;
+
+  constructor({
+    usecase = new FollowSlaveUseCase(),
+  } = {}) {
+    this.usecase = usecase;
+  }
+
+  countTargets(m: messages.FollowRequestCountTargetsMessage): void {
+    this.usecase.countTargets(m.viewSize, m.framePosition);
+  }
+
+  createHints(m: messages.FollowCreateHintsMessage): void {
+    this.usecase.createHints(m.viewSize, m.framePosition, m.tags);
+  }
+
+  showHints(m: messages.FollowShowHintsMessage): void {
+    this.usecase.showHints(m.prefix);
+  }
+
+  activate(m: messages.FollowActivateMessage): void {
+    this.usecase.activate(m.tag, m.newTab, m.background);
+  }
+
+  clear(_m: messages.FollowRemoveHintsMessage) {
+    this.usecase.clear();
+  }
+}