Background operation as Clean Architecture

src/background/usecases/operation.js

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+import MemoryStorage from '../infrastructures/memory-storage';
+import TabPresenter from '../presenters/tab';
+import ConsolePresenter from '../presenters/console';
+
+const CURRENT_SELECTED_KEY = 'tabs.current.selected';
+const LAST_SELECTED_KEY = 'tabs.last.selected';
+
+const ZOOM_SETTINGS = [
+  0.33, 0.50, 0.66, 0.75, 0.80, 0.90, 1.00,
+  1.10, 1.25, 1.50, 1.75, 2.00, 2.50, 3.00
+];
+
+export default class OperationInteractor {
+  constructor() {
+    this.tabPresenter = new TabPresenter();
+    this.tabPresenter.onSelected(info => this.onTabSelected(info.tabId));
+
+    this.consolePresenter = new ConsolePresenter();
+
+    this.cache = new MemoryStorage();
+  }
+
+  async close(force) {
+    let tab = await this.tabPresenter.getCurrent();
+    if (!force && tab.pinned) {
+      return;
+    }
+    return this.tabPresenter.remove([tab.id]);
+  }
+
+  reopen() {
+    return this.tabPresenter.reopen();
+  }
+
+  async selectPrev(count) {
+    let tabs = await this.tabPresenter.getAll();
+    if (tabs.length < 2) {
+      return;
+    }
+    let tab = tabs.find(t => t.active);
+    if (!tab) {
+      return;
+    }
+    let select = (tab.index - count + tabs.length) % tabs.length;
+    return this.tabPresenter.select(tabs[select].id);
+  }
+
+  async selectNext(count) {
+    let tabs = await this.tabPresenter.getAll();
+    if (tabs.length < 2) {
+      return;
+    }
+    let tab = tabs.find(t => t.active);
+    if (!tab) {
+      return;
+    }
+    let select = (tab.index + count) % tabs.length;
+    return this.tabPresenter.select(tabs[select].id);
+  }
+
+  async selectFirst() {
+    let tabs = await this.tabPresenter.getAll();
+    return this.tabPresenter.select(tabs[0].id);
+  }
+
+  async selectLast() {
+    let tabs = await this.tabPresenter.getAll();
+    return this.tabPresenter.select(tabs[tabs.length - 1].id);
+  }
+
+  async selectPrevSelected() {
+    let tabId = await this.cache.get(LAST_SELECTED_KEY);
+    if (tabId === null || typeof tabId === 'undefined') {
+      return;
+    }
+    this.tabPresenter.select(tabId);
+  }
+
+  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 zoomIn(tabId) {
+    let tab = await this.tabPresenter.getCurrent();
+    let current = await this.tabPresenter.getZoom(tab.id);
+    let factor = ZOOM_SETTINGS.find(f => f > current);
+    if (factor) {
+      return this.tabPresenter.setZoom(tabId, factor);
+    }
+  }
+
+  async zoomOut(tabId) {
+    let tab = await this.tabPresenter.getCurrent();
+    let current = await this.tabPresenter.getZoom(tab.id);
+    let factor = [].concat(ZOOM_SETTINGS).reverse().find(f => f < current);
+    if (factor) {
+      return this.tabPresenter.setZoom(tabId, factor);
+    }
+  }
+
+  zoomNutoral(tabId) {
+    return this.tabPresenter.setZoom(tabId, 1);
+  }
+
+  async showCommand() {
+    let tab = await this.tabPresenter.getCurrent();
+    this.consolePresenter.showCommand(tab.id, '');
+  }
+
+  async showOpenCommand(alter) {
+    let tab = await this.tabPresenter.getCurrent();
+    let command = 'open ';
+    if (alter) {
+      command += tab.url;
+    }
+    return this.consolePresenter.showCommand(tab.id, command);
+  }
+
+  async showTabopenCommand(alter) {
+    let tab = await this.tabPresenter.getCurrent();
+    let command = 'tabopen ';
+    if (alter) {
+      command += tab.url;
+    }
+    return this.consolePresenter.showCommand(tab.id, command);
+  }
+
+  async showWinopenCommand(alter) {
+    let tab = await this.tabPresenter.getCurrent();
+    let command = 'winopen ';
+    if (alter) {
+      command += tab.url;
+    }
+    return this.consolePresenter.showCommand(tab.id, command);
+  }
+
+  async showBufferCommand() {
+    let tab = await this.tabPresenter.getCurrent();
+    let command = 'buffer ';
+    return this.consolePresenter.showCommand(tab.id, command);
+  }
+
+  async showAddbookmarkCommand(alter) {
+    let tab = await this.tabPresenter.getCurrent();
+    let command = 'addbookmark ';
+    if (alter) {
+      command += tab.title;
+    }
+    return this.consolePresenter.showCommand(tab.id, command);
+  }
+
+  async findStart() {
+    let tab = await this.tabPresenter.getCurrent();
+    this.consolePresenter.showFind(tab.id);
+  }
+
+  async hideConsole() {
+    let tab = await this.tabPresenter.getCurrent();
+    this.consolePresenter.hide(tab.id);
+  }
+
+  onTabSelected(tabId) {
+    let lastId = this.cache.get(CURRENT_SELECTED_KEY);
+    this.cache.set(LAST_SELECTED_KEY, lastId);
+    this.cache.set(CURRENT_SELECTED_KEY, tabId);
+  }
+}
+