chrome/browser/resources/welcome/shared/bookmark_proxy.js

// Copyright 2018 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 {addSingletonGetter, sendWithPromise} from 'chrome://resources/js/cr.m.js';

/**
 * @typedef {{
 *    parentId: string,
 *    title: string,
 *    url: string,
 * }}
 */
let bookmarkData;

/** @interface */
export class BookmarkProxy {
  /**
   * @param {!bookmarkData} data
   * @param {!Function} callback
   */
  addBookmark(data, callback) {}

  /** @param {string} id ID provided by callback when bookmark was added. */
  removeBookmark(id) {}

  /** @param {boolean} show */
  toggleBookmarkBar(show) {}

  /** @return {!Promise<boolean>} */
  isBookmarkBarShown() {}
}

/** @implements {BookmarkProxy} */
export class BookmarkProxyImpl {
  /** @override */
  addBookmark(data, callback) {
    chrome.bookmarks.create(data, callback);
  }

  /** @override */
  removeBookmark(id) {
    chrome.bookmarks.remove(id);
  }

  /** @override */
  toggleBookmarkBar(show) {
    chrome.send('toggleBookmarkBar', [show]);
  }

  /** @override */
  isBookmarkBarShown() {
    return sendWithPromise('isBookmarkBarShown');
  }
}

addSingletonGetter(BookmarkProxyImpl);

// Wrapper for bookmark proxy to keep some additional states.
export class BookmarkBarManager {
  constructor() {
    /** @private {BookmarkProxy} */
    this.proxy_ = BookmarkProxyImpl.getInstance();

    /** @private {boolean} */
    this.isBarShown_ = false;

    /** @type {!Promise} */
    this.initialized = this.proxy_.isBookmarkBarShown().then(shown => {
      this.isBarShown_ = shown;
    });
  }

  /** @return {boolean} */
  getShown() {
    return this.isBarShown_;
  }

  /** @param {boolean} show */
  setShown(show) {
    this.isBarShown_ = show;
    this.proxy_.toggleBookmarkBar(show);
  }
}

addSingletonGetter(BookmarkBarManager);