| // Copyright 2014 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. |
| // |
| // This class contains common functionality for search-based autocomplete |
| // providers. Search provider and zero suggest provider both use it for common |
| // functionality. |
| |
| #ifndef COMPONENTS_OMNIBOX_BROWSER_BASE_SEARCH_PROVIDER_H_ |
| #define COMPONENTS_OMNIBOX_BROWSER_BASE_SEARCH_PROVIDER_H_ |
| |
| #include <map> |
| #include <memory> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/gtest_prod_util.h" |
| #include "base/macros.h" |
| #include "base/strings/string16.h" |
| #include "components/metrics/proto/omnibox_event.pb.h" |
| #include "components/omnibox/browser/autocomplete_input.h" |
| #include "components/omnibox/browser/autocomplete_match.h" |
| #include "components/omnibox/browser/autocomplete_provider.h" |
| #include "components/omnibox/browser/search_suggestion_parser.h" |
| |
| class AutocompleteProviderClient; |
| class GURL; |
| class SearchTermsData; |
| class SuggestionDeletionHandler; |
| class TemplateURL; |
| |
| namespace base { |
| class DictionaryValue; |
| class ListValue; |
| class Value; |
| } |
| |
| // Base functionality for receiving suggestions from a search engine. |
| // This class is abstract and should only be used as a base for other |
| // autocomplete providers utilizing its functionality. |
| class BaseSearchProvider : public AutocompleteProvider { |
| public: |
| // ID used in creating URLFetcher for default provider's suggest results. |
| static const int kDefaultProviderURLFetcherID; |
| |
| // ID used in creating URLFetcher for keyword provider's suggest results. |
| static const int kKeywordProviderURLFetcherID; |
| |
| // ID used in creating URLFetcher for deleting suggestion results. |
| static const int kDeletionURLFetcherID; |
| |
| BaseSearchProvider(AutocompleteProvider::Type type, |
| AutocompleteProviderClient* client); |
| |
| // Returns whether |match| is flagged as a query that should be prefetched. |
| static bool ShouldPrefetch(const AutocompleteMatch& match); |
| |
| // Returns a simpler AutocompleteMatch suitable for persistence like in |
| // ShortcutsDatabase. This wrapper function uses a number of default values |
| // that may or may not be appropriate for your needs. |
| // NOTE: Use with care. Most likely you want the other CreateSearchSuggestion |
| // with protected access. |
| static AutocompleteMatch CreateSearchSuggestion( |
| const base::string16& suggestion, |
| AutocompleteMatchType::Type type, |
| bool from_keyword_provider, |
| const TemplateURL* template_url, |
| const SearchTermsData& search_terms_data); |
| |
| // AutocompleteProvider: |
| void DeleteMatch(const AutocompleteMatch& match) override; |
| void AddProviderInfo(ProvidersInfo* provider_info) const override; |
| |
| bool field_trial_triggered_in_session() const { |
| return field_trial_triggered_in_session_; |
| } |
| |
| protected: |
| // The following keys are used to record additional information on matches. |
| |
| // We annotate our AutocompleteMatches with whether their relevance scores |
| // were server-provided using this key in the |additional_info| field. |
| static const char kRelevanceFromServerKey[]; |
| |
| // Indicates whether the server said a match should be prefetched. |
| static const char kShouldPrefetchKey[]; |
| |
| // Used to store metadata from the server response, which is needed for |
| // prefetching. |
| static const char kSuggestMetadataKey[]; |
| |
| // Used to store a deletion request url for server-provided suggestions. |
| static const char kDeletionUrlKey[]; |
| |
| // These are the values for the above keys. |
| static const char kTrue[]; |
| static const char kFalse[]; |
| |
| ~BaseSearchProvider() override; |
| |
| typedef std::pair<base::string16, std::string> MatchKey; |
| typedef std::map<MatchKey, AutocompleteMatch> MatchMap; |
| typedef std::vector<std::unique_ptr<SuggestionDeletionHandler>> |
| SuggestionDeletionHandlers; |
| |
| // Returns an AutocompleteMatch with the given |autocomplete_provider| |
| // for the search |suggestion|, which represents a search via |template_url|. |
| // If |template_url| is NULL, returns a match with an invalid destination URL. |
| // |
| // |input| is the original user input. Text in the input is used to highlight |
| // portions of the match contents to distinguish locally-typed text from |
| // suggested text. |
| // |
| // |input| is also necessary for various other details, like whether we should |
| // allow inline autocompletion and what the transition type should be. |
| // |in_keyword_mode| helps guarantee a non-keyword suggestion does not |
| // appear as the default match when the user is in keyword mode. |
| // |accepted_suggestion| is used to generate Assisted Query Stats. |
| // |append_extra_query_params| should be set if |template_url| is the default |
| // search engine, so the destination URL will contain any |
| // command-line-specified query params. |
| static AutocompleteMatch CreateSearchSuggestion( |
| AutocompleteProvider* autocomplete_provider, |
| const AutocompleteInput& input, |
| const bool in_keyword_mode, |
| const SearchSuggestionParser::SuggestResult& suggestion, |
| const TemplateURL* template_url, |
| const SearchTermsData& search_terms_data, |
| int accepted_suggestion, |
| bool append_extra_query_params); |
| |
| // Returns whether the requirements for requesting zero suggest results |
| // are met. The requirements are |
| // * The user is enrolled in a zero suggest experiment. |
| // * The user is not on the NTP. |
| // * The suggest request is sent over HTTPS. This avoids leaking the current |
| // page URL or personal data in unencrypted network traffic. |
| // * The user has suggest enabled in their settings and is not in incognito |
| // mode. (Incognito disables suggest entirely.) |
| // * The user's suggest provider is Google. We might want to allow other |
| // providers to see this data someday, but for now this has only been |
| // implemented for Google. |
| static bool ZeroSuggestEnabled( |
| const GURL& suggest_url, |
| const TemplateURL* template_url, |
| metrics::OmniboxEventProto::PageClassification page_classification, |
| const SearchTermsData& search_terms_data, |
| const AutocompleteProviderClient* client); |
| |
| // Returns whether we can send the URL of the current page in any suggest |
| // requests. Doing this requires that all the following hold: |
| // * ZeroSuggestEnabled() is true, so we meet the requirements above. |
| // * The current URL is HTTP, or HTTPS with the same domain as the suggest |
| // server. Non-HTTP[S] URLs (e.g. FTP/file URLs) may contain sensitive |
| // information. HTTPS URLs may also contain sensitive information, but if |
| // they're on the same domain as the suggest server, then the relevant |
| // entity could have already seen/logged this data. |
| // * The user is OK in principle with sending URLs of current pages to their |
| // provider. Today, there is no explicit setting that controls this, but if |
| // the user has tab sync enabled and tab sync is unencrypted, then they're |
| // already sending this data to Google for sync purposes. Thus we use this |
| // setting as a proxy for "it's OK to send such data". In the future, |
| // especially if we want to support suggest providers other than Google, we |
| // may change this to be a standalone setting or part of some explicit |
| // general opt-in. |
| static bool CanSendURL( |
| const GURL& current_page_url, |
| const GURL& suggest_url, |
| const TemplateURL* template_url, |
| metrics::OmniboxEventProto::PageClassification page_classification, |
| const SearchTermsData& search_terms_data, |
| AutocompleteProviderClient* client); |
| |
| // If the |deletion_url| is valid, then set |match.deletable| to true and |
| // save the |deletion_url| into the |match|'s additional info under |
| // the key |kDeletionUrlKey|. |
| void SetDeletionURL(const std::string& deletion_url, |
| AutocompleteMatch* match); |
| |
| // Creates an AutocompleteMatch from |result| to search for the query in |
| // |result|. Adds the created match to |map|; if such a match |
| // already exists, whichever one has lower relevance is eliminated. |
| // |metadata| and |accepted_suggestion| are used for generating an |
| // AutocompleteMatch. |
| // |mark_as_deletable| indicates whether the match should be marked deletable. |
| // |in_keyword_mode| helps guarantee a non-keyword suggestion does not |
| // appear as the default match when the user is in keyword mode. |
| // NOTE: Any result containing a deletion URL is always marked deletable. |
| void AddMatchToMap(const SearchSuggestionParser::SuggestResult& result, |
| const std::string& metadata, |
| int accepted_suggestion, |
| bool mark_as_deletable, |
| bool in_keyword_mode, |
| MatchMap* map); |
| |
| // Parses results from the suggest server and updates the appropriate suggest |
| // and navigation result lists in |results|. |default_result_relevance| is |
| // the relevance to use if it was not explicitly set by the server. |
| // |is_keyword_result| indicates whether the response was received from the |
| // keyword provider. |
| // Returns whether the appropriate result list members were updated. |
| bool ParseSuggestResults(const base::Value& root_val, |
| int default_result_relevance, |
| bool is_keyword_result, |
| SearchSuggestionParser::Results* results); |
| |
| // Returns the TemplateURL corresponding to the keyword or default |
| // provider based on the value of |is_keyword|. |
| virtual const TemplateURL* GetTemplateURL(bool is_keyword) const = 0; |
| |
| // Returns the AutocompleteInput for keyword provider or default provider |
| // based on the value of |is_keyword|. |
| virtual const AutocompleteInput GetInput(bool is_keyword) const = 0; |
| |
| // Returns whether the destination URL corresponding to the given |result| |
| // should contain command-line-specified query params. |
| virtual bool ShouldAppendExtraParams( |
| const SearchSuggestionParser::SuggestResult& result) const = 0; |
| |
| // Records in UMA whether the deletion request resulted in success. |
| virtual void RecordDeletionResult(bool success) = 0; |
| |
| AutocompleteProviderClient* client() { return client_; } |
| const AutocompleteProviderClient* client() const { return client_; } |
| |
| bool field_trial_triggered() const { return field_trial_triggered_; } |
| |
| void set_field_trial_triggered(bool triggered) { |
| field_trial_triggered_ = triggered; |
| } |
| void set_field_trial_triggered_in_session(bool triggered) { |
| field_trial_triggered_in_session_ = triggered; |
| } |
| |
| private: |
| friend class SearchProviderTest; |
| FRIEND_TEST_ALL_PREFIXES(SearchProviderTest, TestDeleteMatch); |
| |
| // Removes the deleted |match| from the list of |matches_|. |
| void DeleteMatchFromMatches(const AutocompleteMatch& match); |
| |
| // This gets called when we have requested a suggestion deletion from the |
| // server to handle the results of the deletion. It will be called after the |
| // deletion request completes. |
| void OnDeletionComplete(bool success, |
| SuggestionDeletionHandler* handler); |
| |
| AutocompleteProviderClient* client_; |
| |
| // Whether a field trial, if any, has triggered in the most recent |
| // autocomplete query. This field is set to true only if the suggestion |
| // provider has completed and the response contained |
| // '"google:fieldtrialtriggered":true'. |
| bool field_trial_triggered_; |
| |
| // Same as above except that it is maintained across the current Omnibox |
| // session. |
| bool field_trial_triggered_in_session_; |
| |
| // Each deletion handler in this vector corresponds to an outstanding request |
| // that a server delete a personalized suggestion. Making this a ScopedVector |
| // causes us to auto-cancel all such requests on shutdown. |
| SuggestionDeletionHandlers deletion_handlers_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BaseSearchProvider); |
| }; |
| |
| #endif // COMPONENTS_OMNIBOX_BROWSER_BASE_SEARCH_PROVIDER_H_ |