| // Copyright 2017 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 "ios/chrome/browser/web/tab_id_tab_helper.h" |
| |
| #include "base/mac/foundation_util.h" |
| #include "base/strings/sys_string_conversions.h" |
| #import "ios/web/public/serializable_user_data_manager.h" |
| |
| #if !defined(__has_feature) || !__has_feature(objc_arc) |
| #error "This file requires ARC support." |
| #endif |
| |
| namespace { |
| // The key under which the tab ID is stored in the WebState's serializable user |
| // data. |
| NSString* const kTabIdKey = @"TabId"; |
| } |
| |
| TabIdTabHelper::TabIdTabHelper(web::WebState* web_state) { |
| web::SerializableUserDataManager* user_data_manager = |
| web::SerializableUserDataManager::FromWebState(web_state); |
| NSString* unique_id = base::mac::ObjCCast<NSString>( |
| user_data_manager->GetValueForSerializationKey(kTabIdKey)); |
| if (![unique_id length]) { |
| unique_id = [[NSUUID UUID] UUIDString]; |
| user_data_manager->AddSerializableData(unique_id, kTabIdKey); |
| } |
| tab_id_ = [unique_id copy]; |
| } |
| |
| TabIdTabHelper::~TabIdTabHelper() = default; |