| // Copyright 2012 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 CHROME_BROWSER_SEARCH_SEARCH_H_ |
| #define CHROME_BROWSER_SEARCH_SEARCH_H_ |
| |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/strings/string16.h" |
| #include "chrome/browser/ui/search/search_model.h" |
| |
| class GURL; |
| class Profile; |
| class TemplateURL; |
| class TemplateURLRef; |
| |
| namespace content { |
| class BrowserContext; |
| class NavigationEntry; |
| class WebContents; |
| } |
| |
| namespace user_prefs { |
| class PrefRegistrySyncable; |
| } |
| |
| namespace chrome { |
| |
| enum OptInState { |
| // The user has not manually opted in/out of InstantExtended. |
| INSTANT_EXTENDED_NOT_SET, |
| // The user has opted-in to InstantExtended. |
| INSTANT_EXTENDED_OPT_IN, |
| // The user has opted-out of InstantExtended. |
| INSTANT_EXTENDED_OPT_OUT, |
| INSTANT_EXTENDED_OPT_IN_STATE_ENUM_COUNT, |
| }; |
| |
| // Use this value for "start margin" to prevent the "es_sm" parameter from |
| // being used. |
| extern const int kDisableStartMargin; |
| |
| // Returns whether the Instant Extended API is enabled. |
| bool IsInstantExtendedAPIEnabled(); |
| |
| // Returns whether the suggest is enabled for the given |profile|. |
| bool IsSuggestPrefEnabled(Profile* profile); |
| |
| // Returns the value to pass to the &espv CGI parameter when loading the |
| // embedded search page from the user's default search provider. Returns 0 if |
| // the Instant Extended API is not enabled. |
| uint64 EmbeddedSearchPageVersion(); |
| |
| // Returns whether query extraction is enabled. |
| bool IsQueryExtractionEnabled(); |
| |
| // Extracts and returns search terms from |url|. Returns empty string if the URL |
| // is not secure or doesn't have a search term replacement key. Does not |
| // consider IsQueryExtractionEnabled() and Instant support state of the page and |
| // does not check for a privileged process, so most callers should use |
| // GetSearchTerms() below instead. |
| string16 GetSearchTermsFromURL(Profile* profile, const GURL& url); |
| |
| // Returns the search terms attached to a specific NavigationEntry, or empty |
| // string otherwise. Does not consider IsQueryExtractionEnabled() and does not |
| // check Instant support, so most callers should use GetSearchTerms() below |
| // instead. |
| string16 GetSearchTermsFromNavigationEntry( |
| const content::NavigationEntry* entry); |
| |
| // Returns search terms if this WebContents is a search results page. It looks |
| // in the visible NavigationEntry first, to see if search terms have already |
| // been extracted. Failing that, it tries to extract search terms from the URL. |
| // |
| // Returns a blank string if search terms were not found, or if search terms |
| // extraction is disabled for this WebContents or profile, or if |contents| |
| // does not support Instant. |
| string16 GetSearchTerms(const content::WebContents* contents); |
| |
| // Returns true if |url| should be rendered in the Instant renderer process. |
| bool ShouldAssignURLToInstantRenderer(const GURL& url, Profile* profile); |
| |
| // Returns true if the Instant |url| should use process per site. |
| bool ShouldUseProcessPerSiteForInstantURL(const GURL& url, Profile* profile); |
| |
| // Returns true if |url| corresponds to a New Tab page (it can be either an |
| // Instant Extended NTP or a non-extended NTP). |
| bool IsNTPURL(const GURL& url, Profile* profile); |
| |
| // Returns true if the visible entry of |contents| is a New Tab Page rendered |
| // by Instant. A page that matches the search or Instant URL of the default |
| // search provider but does not have any search terms is considered an Instant |
| // New Tab Page. |
| bool IsInstantNTP(const content::WebContents* contents); |
| |
| // Same as IsInstantNTP but uses |nav_entry| to determine the URL for the page |
| // instead of using the visible entry. |
| bool NavEntryIsInstantNTP(const content::WebContents* contents, |
| const content::NavigationEntry* nav_entry); |
| |
| // Returns the Instant URL of the default search engine. Returns an empty GURL |
| // if the engine doesn't have an Instant URL, or if it shouldn't be used (say |
| // because it doesn't satisfy the requirements for extended mode or if Instant |
| // is disabled through preferences). Callers must check that the returned URL is |
| // valid before using it. The value of |start_margin| is used for the "es_sm" |
| // parameter in the URL. |force_instant_results| forces a search page to update |
| // results incrementally even if that is otherwise disabled by google.com |
| // preferences. |
| // NOTE: This method expands the default search engine's instant_url template, |
| // so it shouldn't be called from SearchTermsData or other such code that would |
| // lead to an infinite recursion. |
| GURL GetInstantURL(Profile* profile, |
| int start_margin, |
| bool force_instant_results); |
| |
| // Returns URLs associated with the default search engine for |profile|. |
| std::vector<GURL> GetSearchURLs(Profile* profile); |
| |
| // Returns the Local Instant URL of the New Tab Page. |
| // TODO(kmadhusu): Remove this function and update the call sites. |
| GURL GetLocalInstantURL(Profile* profile); |
| |
| // Returns true if 'hide_verbatim' flag is enabled in field trials |
| // to hide the top match in the native suggestions dropdown if it is a verbatim |
| // match. See comments on ShouldHideTopMatch in autocomplete_result.h. |
| bool ShouldHideTopVerbatimMatch(); |
| |
| // Returns true if 'use_remote_ntp_on_startup' flag is enabled in field trials |
| // to always show the remote NTP on browser startup. |
| bool ShouldPreferRemoteNTPOnStartup(); |
| |
| // Returns true if the cacheable NTP should be shown and false if not. |
| // Exposed for testing. |
| bool ShouldUseCacheableNTP(); |
| |
| // Returns true if the Instant NTP should be shown and false if not. |
| bool ShouldShowInstantNTP(); |
| |
| // Returns true if the recent tabs link should be shown on the local NTP in |
| // field trials. |
| bool ShouldShowRecentTabsOnNTP(); |
| |
| // Returns true if Instant Extended should be disabled on the search results |
| // page. |
| bool ShouldSuppressInstantExtendedOnSRP(); |
| |
| // Transforms the input |url| into its "effective URL". The returned URL |
| // facilitates grouping process-per-site. The |url| is transformed, for |
| // example, from |
| // |
| // https://www.google.com/search?espv=1&q=tractors |
| // |
| // to the privileged URL |
| // |
| // chrome-search://www.google.com/search?espv=1&q=tractors |
| // |
| // Notice the scheme change. |
| // |
| // If the input is already a privileged URL then that same URL is returned. |
| // |
| // If |url| is that of the online NTP, its host is replaced with "online-ntp". |
| // This forces the NTP and search results pages to have different SiteIntances, |
| // and hence different processes. |
| GURL GetEffectiveURLForInstant(const GURL& url, Profile* profile); |
| |
| // Returns the staleness timeout (in seconds) that should be used to refresh the |
| // InstantLoader. |
| int GetInstantLoaderStalenessTimeoutSec(); |
| |
| // Returns true if |contents| corresponds to a preloaded instant extended NTP. |
| bool IsPreloadedInstantExtendedNTP(const content::WebContents* contents); |
| |
| // Rewrites |url| if |
| // 1. |url| is kChromeUINewTabURL, |
| // 2. InstantExtended is enabled, and |
| // 3. The --instant-new-tab-url switch is set to a valid URL. |
| // |url| is rewritten to the value of --instant-new-tab-url. |
| bool HandleNewTabURLRewrite(GURL* url, |
| content::BrowserContext* browser_context); |
| // Reverses the operation from HandleNewTabURLRewrite. |
| bool HandleNewTabURLReverseRewrite(GURL* url, |
| content::BrowserContext* browser_context); |
| |
| // Sets the Instant support |state| in the navigation |entry|. |
| void SetInstantSupportStateInNavigationEntry(InstantSupportState state, |
| content::NavigationEntry* entry); |
| |
| // Returns the Instant support state attached to the NavigationEntry, or |
| // INSTANT_SUPPORT_UNKNOWN otherwise. |
| InstantSupportState GetInstantSupportStateFromNavigationEntry( |
| const content::NavigationEntry& entry); |
| |
| // Returns true if the field trial flag is enabled to prefetch results on SRP. |
| bool ShouldPrefetchSearchResultsOnSRP(); |
| |
| // ----------------------------------------------------- |
| // The following APIs are exposed for use in tests only. |
| // ----------------------------------------------------- |
| |
| // Forces the Instant Extended API to be enabled for tests. |
| void EnableInstantExtendedAPIForTesting(); |
| |
| // Forces the Instant Extended API to be disabled for tests. |
| void DisableInstantExtendedAPIForTesting(); |
| |
| // Type for a collection of experiment configuration parameters. |
| typedef std::vector<std::pair<std::string, std::string> > FieldTrialFlags; |
| |
| // Finds the active field trial group name and parses out the group number and |
| // configuration flags. On success, |flags| will be filled with the field trial |
| // flags. |flags| must not be NULL. If not NULL, |group_number| will receive the |
| // experiment group number. |
| // Returns true iff the active field trial is successfully parsed and not |
| // disabled. |
| // Note that |flags| may be successfully populated in some cases when false is |
| // returned - in these cases it should not be used. |
| // Exposed for testing only. |
| bool GetFieldTrialInfo(FieldTrialFlags* flags, |
| uint64* group_number); |
| |
| // Given a FieldTrialFlags object, returns the string value of the provided |
| // flag. |
| // Exposed for testing only. |
| std::string GetStringValueForFlagWithDefault(const std::string& flag, |
| const std::string& default_value, |
| const FieldTrialFlags& flags); |
| |
| // Given a FieldTrialFlags object, returns the uint64 value of the provided |
| // flag. |
| // Exposed for testing only. |
| uint64 GetUInt64ValueForFlagWithDefault(const std::string& flag, |
| uint64 default_value, |
| const FieldTrialFlags& flags); |
| |
| // Given a FieldTrialFlags object, returns the bool value of the provided flag. |
| // Exposed for testing only. |
| bool GetBoolValueForFlagWithDefault(const std::string& flag, |
| bool default_value, |
| const FieldTrialFlags& flags); |
| |
| // Returns the Cacheable New Tab Page URL for the given |profile|. |
| GURL GetNewTabPageURL(Profile* profile); |
| |
| // Let tests reset the gate that prevents metrics from being sent more than |
| // once. |
| void ResetInstantExtendedOptInStateGateForTest(); |
| |
| } // namespace chrome |
| |
| #endif // CHROME_BROWSER_SEARCH_SEARCH_H_ |