| // 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. |
| |
| #include "chrome/browser/android/background_tab_manager.h" |
| |
| #include "base/memory/singleton.h" |
| #include "components/history/core/browser/history_service.h" |
| #include "components/history/core/browser/history_types.h" |
| #include "content/public/browser/browser_thread.h" |
| |
| using content::BrowserThread; |
| |
| namespace chrome { |
| namespace android { |
| |
| WebContentsDestroyedObserver::WebContentsDestroyedObserver( |
| BackgroundTabManager* owner, |
| content::WebContents* watched_contents) |
| : content::WebContentsObserver(watched_contents), owner_(owner) {} |
| |
| WebContentsDestroyedObserver::~WebContentsDestroyedObserver() {} |
| |
| void WebContentsDestroyedObserver::WebContentsDestroyed() { |
| DCHECK(owner_->IsBackgroundTab(web_contents())); |
| owner_->UnregisterBackgroundTab(); |
| } |
| |
| BackgroundTabManager::BackgroundTabManager() { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| web_contents_ = nullptr; |
| profile_ = nullptr; |
| } |
| |
| BackgroundTabManager::~BackgroundTabManager() { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| web_contents_ = nullptr; |
| profile_ = nullptr; |
| } |
| |
| bool BackgroundTabManager::IsBackgroundTab( |
| content::WebContents* web_contents) const { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| if (!web_contents) |
| return false; |
| return web_contents_ == web_contents; |
| } |
| |
| void BackgroundTabManager::RegisterBackgroundTab( |
| content::WebContents* web_contents, |
| Profile* profile) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| DCHECK(!web_contents_); |
| web_contents_ = web_contents; |
| profile_ = profile; |
| web_contents_observer_ = |
| std::make_unique<WebContentsDestroyedObserver>(this, web_contents); |
| } |
| |
| void BackgroundTabManager::UnregisterBackgroundTab() { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| DCHECK(web_contents_); |
| web_contents_ = nullptr; |
| profile_ = nullptr; |
| cached_history_.clear(); |
| web_contents_observer_.reset(); |
| } |
| |
| Profile* BackgroundTabManager::GetProfile() const { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| return profile_; |
| } |
| |
| void BackgroundTabManager::CacheHistory( |
| const history::HistoryAddPageArgs& history_item) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| cached_history_.push_back(history_item); |
| } |
| |
| void BackgroundTabManager::CommitHistory( |
| history::HistoryService* history_service) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| // History service can be null in non exceptional conditions, e.g. incognito |
| // mode. We clear the cached history in any case. |
| if (history_service) { |
| for (const auto& history_item : cached_history_) { |
| history_service->AddPage(history_item); |
| } |
| } |
| cached_history_.clear(); |
| } |
| |
| BackgroundTabManager* BackgroundTabManager::GetInstance() { |
| return base::Singleton<BackgroundTabManager>::get(); |
| } |
| |
| } // namespace android |
| } // namespace chrome |