| // 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. |
| |
| #ifndef COMPONENTS_NTP_SNIPPETS_FEATURES_H_ |
| #define COMPONENTS_NTP_SNIPPETS_FEATURES_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "base/feature_list.h" |
| #include "components/ntp_snippets/category_rankers/category_ranker.h" |
| #include "components/prefs/pref_service.h" |
| |
| namespace base { |
| class Clock; |
| } |
| |
| namespace ntp_snippets { |
| |
| // Features to turn individual providers/categories on/off. |
| extern const base::Feature kArticleSuggestionsFeature; |
| extern const base::Feature kBookmarkSuggestionsFeature; |
| extern const base::Feature kRecentOfflineTabSuggestionsFeature; |
| extern const base::Feature kPhysicalWebPageSuggestionsFeature; |
| extern const base::Feature kForeignSessionsSuggestionsFeature;; |
| |
| // Feature to allow the 'save to offline' option to appear in the snippets |
| // context menu. |
| extern const base::Feature kSaveToOfflineFeature; |
| |
| // Feature to allow offline badges to appear on snippets. |
| extern const base::Feature kOfflineBadgeFeature; |
| |
| // Feature to allow dismissing sections. |
| extern const base::Feature kSectionDismissalFeature; |
| |
| // Global toggle for the whole content suggestions feature. If this is set to |
| // false, all the per-provider features are ignored. |
| extern const base::Feature kContentSuggestionsFeature; |
| |
| // Feature to allow UI as specified here: https://crbug.com/660837. |
| extern const base::Feature kIncreasedVisibility; |
| |
| // Feature to enable the Fetch More action |
| extern const base::Feature kFetchMoreFeature; |
| |
| // Feature to prefer AMP URLs over regular URLs when available. |
| extern const base::Feature kPreferAmpUrlsFeature; |
| |
| // Feature to choose a category ranker. |
| extern const base::Feature kCategoryRanker; |
| |
| // Parameter for a kCategoryRanker feature flag. |
| extern const char kCategoryRankerParameter[]; |
| // Possible values of the parameter above. |
| extern const char kCategoryRankerConstantRanker[]; |
| extern const char kCategoryRankerClickBasedRanker[]; |
| |
| enum class CategoryRankerChoice { |
| CONSTANT, |
| CLICK_BASED, |
| }; |
| |
| // Returns which CategoryRanker to use according to kCategoryRanker feature. |
| CategoryRankerChoice GetSelectedCategoryRanker(); |
| |
| // Builds a CategoryRanker according to kCategoryRanker feature. |
| std::unique_ptr<CategoryRanker> BuildSelectedCategoryRanker( |
| PrefService* pref_service, |
| std::unique_ptr<base::Clock> clock); |
| |
| } // namespace ntp_snippets |
| |
| #endif // COMPONENTS_NTP_SNIPPETS_FEATURES_H_ |