Add SpellingServiceClient::IsAvailable().

chrome/browser/spellchecker/spelling_service_client.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/spellchecker/spelling_service_client.h"
 
 #include "base/json/json_reader.h"
 #include "base/json/string_escape.h"
 #include "base/logging.h"
 #include "base/string_util.h"
@@ skipping 54 matching lines @@
     // Also, we convert the given text to a JSON string, i.e. quote all its
     // non-ASCII characters.
     UErrorCode error = U_ZERO_ERROR;
     char id[ULOC_LANG_CAPACITY + ULOC_SCRIPT_CAPACITY + ULOC_COUNTRY_CAPACITY];
     uloc_addLikelySubtags(locale.c_str(), id, arraysize(id), &error);
 
     error = U_ZERO_ERROR;
     uloc_getLanguage(id, language, arraysize(language), &error);
     country = uloc_getISO3Country(id);
   }
-  if (type == SPELLCHECK && base::strcasecmp(language, ULOC_ENGLISH))
+  if (!IsAvailable(profile, SPELLCHECK))
     return false;
 
   // Format the JSON request to be sent to the Spelling service.
   std::string encoded_text;
   base::JsonDoubleQuote(text, false, &encoded_text);
 
   static const char kSpellingRequest[] =
       "{"
       "\"method\":\"spelling.check\","
       "\"apiVersion\":\"v%d\","
@@ skipping 19 matching lines @@
   fetcher_->SetUploadData("application/json", request);
   fetcher_->SetLoadFlags(
       net::LOAD_DO_NOT_SEND_COOKIES | net::LOAD_DO_NOT_SAVE_COOKIES);
   fetcher_->Start();
   tag_ = tag;
   text_ = text;
   callback_ = callback;
   return true;
 }
 
+bool SpellingServiceClient::IsAvailable(Profile* profile, ServiceType type) {
+  const PrefService* pref = profile->GetPrefs();
+  if (!pref->GetBoolean(prefs::kEnableSpellCheck) ||
+      !pref->GetBoolean(prefs::kSpellCheckUseSpellingService))
+    return false;
+
+  // Enable the suggest service only on languages not supported by the
+  // spellcheck service. When this client calls the spellcheck service, it
+  // returns not only spellcheck results but also spelling suggestions provided
+  // by the suggest service. That is, it is not useful to use the suggest
+  // service when this client can use the spellcheck service.
+  std::string locale = pref->GetString(prefs::kSpellCheckDictionary);
+  bool spellcheck_available = locale.empty() || !locale.compare(0, 2, "en");
+  return type == SUGGEST ? !spellcheck_available : spellcheck_available;
+}
+
 void SpellingServiceClient::OnURLFetchComplete(
     const net::URLFetcher* source) {
   scoped_ptr<net::URLFetcher> clean_up_fetcher(fetcher_.release());
   bool success = false;
   std::vector<SpellCheckResult> results;
   if (source->GetResponseCode() / 100 == 2) {
     std::string data;
     source->GetResponseAsString(&data);
     success = ParseResponse(data, &results);
   }
@@ skipping 74 matching lines @@
     if (!suggestions->GetDictionary(0, &suggestion) ||
         !suggestion->GetString("suggestion", &replacement)) {
       return false;
     }
     SpellCheckResult result(
         SpellCheckResult::SPELLING, start, length, replacement);
     results->push_back(result);
   }
   return true;
 }