siyuan/app/src/asset/pdf/genericcom.js

/* Copyright 2017 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { BasePreferences } from './preferences.js'
import { DownloadManager } from './download_manager.js'
import { GenericScripting } from './generic_scripting.js'
import { shadow } from './pdfjs'

if (typeof PDFJSDev !== 'undefined' && !PDFJSDev.test('GENERIC')) {
  throw new Error(
    'Module "pdfjs-web/genericcom" shall not be used outside GENERIC build.',
  )
}

const GenericCom = {}

class GenericPreferences extends BasePreferences {
  async _writeToStorage (prefObj) {
    localStorage.setItem('pdfjs.preferences', JSON.stringify(prefObj))
  }

  async _readFromStorage (prefObj) {
    return JSON.parse(localStorage.getItem('pdfjs.preferences'))
  }
}

class GenericExternalServices {
  constructor () {
    throw new Error('Cannot initialize DefaultExternalServices.')
  }

  static updateFindControlState (data) {}

  static updateFindMatchesCount (data) {}

  static initPassiveLoading (callbacks) {}

  static async fallback (data) {}

  static reportTelemetry (data) {}

  static get supportsIntegratedFind () {
    return shadow(this, 'supportsIntegratedFind', false)
  }

  static get supportsDocumentFonts () {
    return shadow(this, 'supportsDocumentFonts', true)
  }

  static get supportedMouseWheelZoomModifierKeys () {
    return shadow(this, 'supportedMouseWheelZoomModifierKeys', {
      ctrlKey: true,
      metaKey: true,
    })
  }

  static get isInAutomation () {
    return shadow(this, 'isInAutomation', false)
  }

  static createDownloadManager (options) {
    return new DownloadManager()
  }

  static createPreferences () {
    return new GenericPreferences()
  }

  static createScripting ({sandboxBundleSrc}) {
    return new GenericScripting(sandboxBundleSrc)
  }
}

export { GenericCom, GenericExternalServices }