| // Copyright 2016 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/previews/previews_service.h" |
| |
| #include "base/bind.h" |
| #include "base/files/file_path.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/sequenced_task_runner.h" |
| #include "base/task_scheduler/post_task.h" |
| #include "chrome/common/chrome_constants.h" |
| #include "components/data_reduction_proxy/core/common/data_reduction_proxy_features.h" |
| #include "components/data_reduction_proxy/core/common/data_reduction_proxy_params.h" |
| #include "components/optimization_guide/optimization_guide_service.h" |
| #include "components/previews/content/previews_io_data.h" |
| #include "components/previews/content/previews_optimization_guide.h" |
| #include "components/previews/content/previews_ui_service.h" |
| #include "components/previews/core/previews_experiments.h" |
| #include "components/previews/core/previews_logger.h" |
| #include "components/previews/core/previews_opt_out_store.h" |
| #include "components/previews/core/previews_opt_out_store_sql.h" |
| #include "content/public/browser/browser_thread.h" |
| |
| namespace { |
| |
| // Returns true if previews can be shown for |type|. |
| bool IsPreviewsTypeEnabled(previews::PreviewsType type) { |
| bool server_previews_enabled = base::FeatureList::IsEnabled( |
| data_reduction_proxy::features::kDataReductionProxyDecidesTransform); |
| switch (type) { |
| case previews::PreviewsType::OFFLINE: |
| return previews::params::IsOfflinePreviewsEnabled(); |
| case previews::PreviewsType::LOFI: |
| return server_previews_enabled || previews::params::IsClientLoFiEnabled(); |
| case previews::PreviewsType::LITE_PAGE: |
| return server_previews_enabled; |
| case previews::PreviewsType::AMP_REDIRECTION: |
| return previews::params::IsAMPRedirectionPreviewEnabled(); |
| case previews::PreviewsType::NOSCRIPT: |
| return previews::params::IsNoScriptPreviewsEnabled(); |
| case previews::PreviewsType::NONE: |
| case previews::PreviewsType::LAST: |
| break; |
| } |
| NOTREACHED(); |
| return false; |
| } |
| |
| // Returns the version of preview treatment |type|. Defaults to 0 if not |
| // specified in field trial config. |
| int GetPreviewsTypeVersion(previews::PreviewsType type) { |
| switch (type) { |
| case previews::PreviewsType::OFFLINE: |
| return previews::params::OfflinePreviewsVersion(); |
| case previews::PreviewsType::LOFI: |
| return previews::params::ClientLoFiVersion(); |
| case previews::PreviewsType::LITE_PAGE: |
| return data_reduction_proxy::params::LitePageVersion(); |
| case previews::PreviewsType::AMP_REDIRECTION: |
| return previews::params::AMPRedirectionPreviewsVersion(); |
| case previews::PreviewsType::NOSCRIPT: |
| return previews::params::NoScriptPreviewsVersion(); |
| case previews::PreviewsType::NONE: |
| case previews::PreviewsType::LAST: |
| break; |
| } |
| NOTREACHED(); |
| return -1; |
| } |
| |
| // Returns the enabled PreviewsTypes with their version. |
| std::unique_ptr<previews::PreviewsTypeList> GetEnabledPreviews() { |
| std::unique_ptr<previews::PreviewsTypeList> enabled_previews( |
| new previews::PreviewsTypeList()); |
| |
| // Loop across all previews types (relies on sequential enum values). |
| for (int i = static_cast<int>(previews::PreviewsType::NONE) + 1; |
| i < static_cast<int>(previews::PreviewsType::LAST); ++i) { |
| previews::PreviewsType type = static_cast<previews::PreviewsType>(i); |
| if (IsPreviewsTypeEnabled(type)) |
| enabled_previews->push_back({type, GetPreviewsTypeVersion(type)}); |
| } |
| return enabled_previews; |
| } |
| |
| } // namespace |
| |
| PreviewsService::PreviewsService() { |
| DCHECK_CURRENTLY_ON(content::BrowserThread::UI); |
| } |
| |
| PreviewsService::~PreviewsService() { |
| DCHECK_CURRENTLY_ON(content::BrowserThread::UI); |
| } |
| |
| void PreviewsService::Initialize( |
| previews::PreviewsIOData* previews_io_data, |
| optimization_guide::OptimizationGuideService* optimization_guide_service, |
| const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner, |
| const base::FilePath& profile_path) { |
| DCHECK_CURRENTLY_ON(content::BrowserThread::UI); |
| |
| // Get the background thread to run SQLite on. |
| scoped_refptr<base::SequencedTaskRunner> background_task_runner = |
| base::CreateSequencedTaskRunnerWithTraits( |
| {base::MayBlock(), base::TaskPriority::BACKGROUND}); |
| |
| previews_ui_service_ = base::MakeUnique<previews::PreviewsUIService>( |
| previews_io_data, io_task_runner, |
| base::MakeUnique<previews::PreviewsOptOutStoreSQL>( |
| io_task_runner, background_task_runner, |
| profile_path.Append(chrome::kPreviewsOptOutDBFilename), |
| GetEnabledPreviews()), |
| optimization_guide_service |
| ? base::MakeUnique<previews::PreviewsOptimizationGuide>( |
| optimization_guide_service, io_task_runner) |
| : nullptr, |
| base::Bind(&IsPreviewsTypeEnabled), |
| base::MakeUnique<previews::PreviewsLogger>()); |
| } |