1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_SCRIPT_H_ 6 #define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_SCRIPT_H_ 7 8 #include <string> 9 #include <vector> 10 11 #include "base/callback_forward.h" 12 #include "base/gtest_prod_util.h" 13 #include "base/memory/scoped_ptr.h" 14 #include "base/memory/weak_ptr.h" 15 #include "base/time/time.h" 16 17 class TranslateScriptTest; 18 class TranslateURLFetcher; 19 20 class TranslateScript { 21 public: 22 typedef base::Callback<void(bool, const std::string&)> RequestCallback; 23 24 static const int kFetcherId = 0; 25 26 TranslateScript(); 27 virtual ~TranslateScript(); 28 29 // Returns the feched the translate script. data()30 const std::string& data() { return data_; } 31 32 // Used by unit-tests to override some defaults: 33 // Delay after which the translate script is fetched again from the 34 // translation server. set_expiration_delay(int delay_ms)35 void set_expiration_delay(int delay_ms) { 36 expiration_delay_ = base::TimeDelta::FromMilliseconds(delay_ms); 37 } 38 39 // Clears the translate script, so it will be fetched next time we translate. Clear()40 void Clear() { data_.clear(); } 41 42 // Fetches the JS translate script (the script that is injected in the page 43 // to translate it). 44 void Request(const RequestCallback& callback); 45 46 private: 47 friend class TranslateScriptTest; 48 FRIEND_TEST_ALL_PREFIXES(TranslateScriptTest, CheckScriptParameters); 49 FRIEND_TEST_ALL_PREFIXES(TranslateScriptTest, CheckScriptURL); 50 51 static const char kScriptURL[]; 52 static const char kRequestHeader[]; 53 54 // Used in kTranslateScriptURL to specify using always ssl to load resources. 55 static const char kAlwaysUseSslQueryName[]; 56 static const char kAlwaysUseSslQueryValue[]; 57 58 // Used in kTranslateScriptURL to specify a callback function name. 59 static const char kCallbackQueryName[]; 60 static const char kCallbackQueryValue[]; 61 62 // Used in kTranslateScriptURL to specify a CSS loader callback function name. 63 static const char kCssLoaderCallbackQueryName[]; 64 static const char kCssLoaderCallbackQueryValue[]; 65 66 // Used in kTranslateScriptURL to specify a JavaScript loader callback 67 // function name. 68 static const char kJavascriptLoaderCallbackQueryName[]; 69 static const char kJavascriptLoaderCallbackQueryValue[]; 70 71 // The callback when the script is fetched or a server error occured. 72 void OnScriptFetchComplete(int id, bool success, const std::string& data); 73 74 // URL fetcher to fetch the translate script. 75 scoped_ptr<TranslateURLFetcher> fetcher_; 76 77 // The JS injected in the page to do the translation. 78 std::string data_; 79 80 // Delay after which the translate script is fetched again from the translate 81 // server. 82 base::TimeDelta expiration_delay_; 83 84 // The callbacks called when the server sends a response. 85 typedef std::vector<RequestCallback> RequestCallbackList; 86 RequestCallbackList callback_list_; 87 88 base::WeakPtrFactory<TranslateScript> weak_method_factory_; 89 90 DISALLOW_COPY_AND_ASSIGN(TranslateScript); 91 }; 92 93 #endif // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_SCRIPT_H_ 94