Method restoreBackup

modules/core/EditSystem.js:1212–1224

* restoreBackup * Restore the user's backup from localStorage. * This happens when: * - The user chooses to "Restore my changes" from the restore screen

()

   * - The user chooses to "Restore my changes" from the restore screen
   */
  restoreBackup() {
    this._canRestoreBackup = false;

    if (!this._mutex.locked()) return;  // another browser tab owns the history

    const context = this.context;
    const storage = context.systems.storage;
    const json = storage.getItem(this._backupKey());
    if (json) {
      context.resetAsync()
        .then(() => this.fromJSONAsync(json));
    }
  }


  /**