Clean classes and repository

src/background/usecases/TabUseCase.js

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+import TabPresenter from '../presenters/TabPresenter';
+import BrowserSettingRepository from '../repositories/BrowserSettingRepository';
+
+export default class TabUseCase {
+  constructor() {
+    this.tabPresenter = new TabPresenter();
+    this.browserSettingRepository = new BrowserSettingRepository();
+  }
+
+  async close(force) {
+    let tab = await this.tabPresenter.getCurrent();
+    if (!force && tab.pinned) {
+      return;
+    }
+    return this.tabPresenter.remove([tab.id]);
+  }
+
+  async closeRight() {
+    let tabs = await this.tabPresenter.getAll();
+    tabs.sort((t1, t2) => t1.index - t2.index);
+    let index = tabs.findIndex(t => t.active);
+    if (index < 0) {
+      return;
+    }
+    for (let i = index + 1; i < tabs.length; ++i) {
+      let tab = tabs[i];
+      if (!tab.pinned) {
+        this.tabPresenter.remove(tab.id);
+      }
+    }
+  }
+
+  reopen() {
+    return this.tabPresenter.reopen();
+  }
+
+  async reload(cache) {
+    let tab = await this.tabPresenter.getCurrent();
+    return this.tabPresenter.reload(tab.id, cache);
+  }
+
+  async setPinned(pinned) {
+    let tab = await this.tabPresenter.getCurrent();
+    return this.tabPresenter.setPinned(tab.id, pinned);
+  }
+
+  async togglePinned() {
+    let tab = await this.tabPresenter.getCurrent();
+    return this.tabPresenter.setPinned(tab.id, !tab.pinned);
+  }
+
+  async duplicate() {
+    let tab = await this.tabPresenter.getCurrent();
+    return this.tabPresenter.duplicate(tab.id);
+  }
+
+  async openPageSource() {
+    let tab = await this.tabPresenter.getCurrent();
+    let url = 'view-source:' + tab.url;
+    return this.tabPresenter.create(url);
+  }
+
+  async openHome(newTab) {
+    let tab = await this.tabPresenter.getCurrent();
+    let urls = await this.browserSettingRepository.getHomepageUrls();
+    if (urls.length === 1 && urls[0] === 'about:home') {
+      // eslint-disable-next-line max-len
+      throw new Error('Cannot open Firefox Home (about:home) by WebExtensions, set your custom URLs');
+    }
+    if (urls.length === 1 && !newTab) {
+      return this.tabPresenter.open(urls[0], tab.id);
+    }
+    for (let url of urls) {
+      this.tabPresenter.create(url);
+    }
+  }
+}