chrome-devtools-frontend/front_end/panels/application/BackForwardCacheTreeElement.ts

Chrome DevTools UI

// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as i18n from '../../core/i18n/i18n.js';
import type * as Platform from '../../core/platform/platform.js';
import * as UI from '../../ui/legacy/legacy.js';
import * as LegacyWrapper from '../../ui/components/legacy_wrapper/legacy_wrapper.js';
import * as ApplicationComponents from './components/components.js';
import * as Host from '../../core/host/host.js';

import {ApplicationPanelTreeElement} from './ApplicationPanelTreeElement.js';
import {type ResourcesPanel} from './ResourcesPanel.js';

const UIStrings = {
  /**
   *@description Text in Application Panel Sidebar of the Application panel
   */
  backForwardCache: 'Back/forward cache',
};
const str_ = i18n.i18n.registerUIStrings('panels/application/BackForwardCacheTreeElement.ts', UIStrings);
const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);

export class BackForwardCacheTreeElement extends ApplicationPanelTreeElement {
  private view?: LegacyWrapper.LegacyWrapper.LegacyWrapper<
      UI.ThrottledWidget.ThrottledWidget, ApplicationComponents.BackForwardCacheView.BackForwardCacheView>;

  constructor(resourcesPanel: ResourcesPanel) {
    super(resourcesPanel, i18nString(UIStrings.backForwardCache), false);
    const icon = UI.Icon.Icon.create('database', 'resource-tree-item');
    this.setLeadingIcons([icon]);
  }

  override get itemURL(): Platform.DevToolsPath.UrlString {
    return 'bfcache://' as Platform.DevToolsPath.UrlString;
  }

  override onselect(selectedByUser?: boolean): boolean {
    super.onselect(selectedByUser);
    if (!this.view) {
      this.view = LegacyWrapper.LegacyWrapper.legacyWrapper(
          UI.ThrottledWidget.ThrottledWidget, new ApplicationComponents.BackForwardCacheView.BackForwardCacheView());
    }
    this.showView(this.view);
    Host.userMetrics.panelShown(Host.UserMetrics.PanelCodes[Host.UserMetrics.PanelCodes.back_forward_cache]);
    return false;
  }
}