[Contextual Search] Trigger the translation one-box.

chrome/browser/android/contextualsearch/contextual_search_delegate.h

 // Copyright 2015 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_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_DELEGATE_H_
 #define CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_DELEGATE_H_
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/values.h"
 #include "chrome/browser/android/contextualsearch/contextual_search_context.h"
+#include "chrome/browser/android/contextualsearch/resolved_search_term.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "net/url_request/url_fetcher_delegate.h"
 
 namespace net {
 class URLRequestContextGetter;
 }  // namespace net
 
 class Profile;
 class TemplateURLService;
 
 // Handles tasks for the ContextualSearchManager in a separable and testable
 // way, without the complication of being connected to a Java object.
 class ContextualSearchDelegate
     : public net::URLFetcherDelegate,
       public base::SupportsWeakPtr<ContextualSearchDelegate> {
  public:
-  typedef base::Callback<void(bool,
-                              int,
-                              const std::string&,
-                              const std::string&,
-                              const std::string&,
-                              bool,
-                              int,
-                              int)> SearchTermResolutionCallback;
+  typedef base::Callback<void(const ResolvedSearchTerm&)>
+      SearchTermResolutionCallback;
   typedef base::Callback<
       void(const std::string&, const std::string&)> SurroundingTextCallback;
   typedef base::Callback<
       void(const base::string16&, int, int)>
       HandleSurroundingsCallback;
   typedef base::Callback<
       void(const std::string&, const base::string16&, size_t, size_t)>
       IcingCallback;
 
   // ID used in creating URLFetcher for Contextual Search results.
@@ skipping 22 matching lines @@
   // Gathers surrounding text and saves it locally for a future query.
   void GatherAndSaveSurroundingText(const std::string& selection,
                                     bool use_resolved_search_term,
                                     content::ContentViewCore* content_view_core,
                                     bool may_send_base_page_url);
 
   // Continues making a Search Term Resolution request, once the surrounding
   // text has been gathered.
   void ContinueSearchTermResolutionRequest();
 
+  // Gets the target language for translation purposes (cached).
+  std::string GetTargetLanguage();
+
   // For testing.
   void set_context_for_testing(ContextualSearchContext* context) {
     context_.reset(context);
   }
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ContextualSearchDelegateTest,
                            SurroundingTextHighMaximum);
   FRIEND_TEST_ALL_PREFIXES(ContextualSearchDelegateTest,
                            SurroundingTextLowMaximum);
   FRIEND_TEST_ALL_PREFIXES(ContextualSearchDelegateTest,
                            SurroundingTextNoBeforeText);
   FRIEND_TEST_ALL_PREFIXES(ContextualSearchDelegateTest,
                            ExtractMentionsStartEnd);
   FRIEND_TEST_ALL_PREFIXES(ContextualSearchDelegateTest,
                            SurroundingTextForIcing);
   FRIEND_TEST_ALL_PREFIXES(ContextualSearchDelegateTest,
                            SurroundingTextForIcingNegativeLimit);
   FRIEND_TEST_ALL_PREFIXES(ContextualSearchDelegateTest,
-                           DecodeSearchTermsFromJsonResponse);
+                           DecodeSearchTermFromJsonResponse);
 
   // net::URLFetcherDelegate:
   void OnURLFetchComplete(const net::URLFetcher* source) override;
 
   // Builds the search term resolution request URL from the current context.
   GURL BuildRequestUrl();
 
   // Uses the TemplateURL service to construct a search term resolution URL from
   // the given parameters.
   std::string GetSearchTermResolutionUrlString(
@@ skipping 34 matching lines @@
 
   // Checks if we can send the URL for this user. Several conditions are checked
   // to make sure it's OK to send the URL.  These fall into two categories:
   // 1) check if it's allowed by our policy, and 2) ensure that the user is
   // already sending their URL browsing activity to Google.
   bool CanSendPageURL(const GURL& current_page_url,
                       Profile* profile,
                       TemplateURLService* template_url_service);
 
   // Decodes the given json response string and extracts parameters.
-  void DecodeSearchTermsFromJsonResponse(const std::string& response,
-                                         std::string* search_term,
-                                         std::string* display_text,
-                                         std::string* alternate_term,
-                                         std::string* prevent_preload,
-                                         int* mention_start,
-                                         int* mention_end);
+  void DecodeSearchTermFromJsonResponse(const std::string& response,
+                                        std::string* search_term,
+                                        std::string* display_text,
+                                        std::string* alternate_term,
+                                        std::string* prevent_preload,
+                                        int* mention_start,
+                                        int* mention_end,
+                                        std::string* lang);
 
   void ExtractMentionsStartEnd(const base::ListValue& mentions_list,
                                int* startResult,
                                int* endResult);
 
   // Returns the surrounding size to use for the search term resolution
   // request.
   int GetSearchTermSurroundingSize();
 
   // Returns the size of the surroundings to be sent to Icing.
@@ skipping 30 matching lines @@
 
   // The callback for notifications of surrounding text being available.
   SurroundingTextCallback surrounding_callback_;
 
   // The callback for notifications of Icing selection being available.
   IcingCallback icing_callback_;
 
   // Used to hold the context until an upcoming search term request is started.
   scoped_ptr<ContextualSearchContext> context_;
 
+  // Cached Target Language string, to determine when we need to trigger
+  // translation.
+  std::string target_language_;
+
   DISALLOW_COPY_AND_ASSIGN(ContextualSearchDelegate);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_DELEGATE_H_