Move some navigation operations to background

src/background/usecases/NavigateUseCase.ts

@@ -0,0 +1,40 @@
+import { injectable } from 'tsyringe';
+import NavigateClient from '../clients/NavigateClient';
+import TabPresenter from '../presenters/TabPresenter';
+
+@injectable()
+export default class NavigateUseCase {
+  constructor(
+    private tabPresenter: TabPresenter,
+    private navigateClient: NavigateClient,
+  ) {
+  }
+
+  async openHistoryNext(): Promise<void> {
+    let tab = await this.tabPresenter.getCurrent();
+    await this.navigateClient.historyNext(tab.id!!);
+  }
+
+  async openHistoryPrev(): Promise<void> {
+    let tab = await this.tabPresenter.getCurrent();
+    await this.navigateClient.historyPrev(tab.id!!);
+  }
+
+  async openLinkNext(): Promise<void> {
+    let tab = await this.tabPresenter.getCurrent();
+    await this.navigateClient.linkNext(tab.id!!);
+  }
+
+  async openLinkPrev(): Promise<void> {
+    let tab = await this.tabPresenter.getCurrent();
+    await this.navigateClient.linkPrev(tab.id!!);
+  }
+
+  openParent(): Promise<void> {
+    throw new Error('not implemented');
+  }
+
+  openRoot(): Promise<void> {
+    throw new Error('not implemented');
+  }
+}