1 // Copyright 2013 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 CHROME_BROWSER_TRANSLATE_TRANSLATE_SCRIPT_H_ 6 #define CHROME_BROWSER_TRANSLATE_TRANSLATE_SCRIPT_H_ 7 8 #include <string> 9 10 #include "base/callback.h" 11 #include "base/gtest_prod_util.h" 12 #include "base/memory/scoped_ptr.h" 13 #include "base/memory/weak_ptr.h" 14 #include "base/time/time.h" 15 16 class TranslateScriptTest; 17 class TranslateURLFetcher; 18 19 class TranslateScript { 20 public: 21 typedef base::Callback<void(bool, const std::string&)> Callback; 22 23 static const int kFetcherId = 0; 24 25 TranslateScript(); 26 virtual ~TranslateScript(); 27 28 // Returns the feched the translate script. 29 const std::string& data() { return data_; } 30 31 // Used by unit-tests to override some defaults: 32 // Delay after which the translate script is fetched again from the 33 // translation server. 34 void set_expiration_delay(int delay_ms) { 35 expiration_delay_ = base::TimeDelta::FromMilliseconds(delay_ms); 36 } 37 38 // Clears the translate script, so it will be fetched next time we translate. 39 void Clear() { data_.clear(); } 40 41 // Fetches the JS translate script (the script that is injected in the page 42 // to translate it). 43 void Request(const Callback& callback); 44 45 // Returns true if this has a pending request. 46 bool HasPendingRequest() const { return fetcher_.get() != NULL; } 47 48 private: 49 friend class TranslateScriptTest; 50 FRIEND_TEST_ALL_PREFIXES(TranslateScriptTest, CheckScriptParameters); 51 FRIEND_TEST_ALL_PREFIXES(TranslateScriptTest, CheckScriptURL); 52 53 static const char kScriptURL[]; 54 static const char kRequestHeader[]; 55 56 // Used in kTranslateScriptURL to specify using always ssl to load resources. 57 static const char kAlwaysUseSslQueryName[]; 58 static const char kAlwaysUseSslQueryValue[]; 59 60 // Used in kTranslateScriptURL to specify a callback function name. 61 static const char kCallbackQueryName[]; 62 static const char kCallbackQueryValue[]; 63 64 // Used in kTranslateScriptURL to specify a CSS loader callback function name. 65 static const char kCssLoaderCallbackQueryName[]; 66 static const char kCssLoaderCallbackQueryValue[]; 67 68 // Used in kTranslateScriptURL to specify a JavaScript loader callback 69 // function name. 70 static const char kJavascriptLoaderCallbackQueryName[]; 71 static const char kJavascriptLoaderCallbackQueryValue[]; 72 73 // The callback when the script is fetched or a server error occured. 74 void OnScriptFetchComplete(int id, bool success, const std::string& data); 75 76 // URL fetcher to fetch the translate script. 77 scoped_ptr<TranslateURLFetcher> fetcher_; 78 79 // The JS injected in the page to do the translation. 80 std::string data_; 81 82 // Delay after which the translate script is fetched again from the translate 83 // server. 84 base::TimeDelta expiration_delay_; 85 86 // The callback called when the server sends a response. 87 Callback callback_; 88 89 base::WeakPtrFactory<TranslateScript> weak_method_factory_; 90 91 DISALLOW_COPY_AND_ASSIGN(TranslateScript); 92 }; 93 94 #endif // CHROME_BROWSER_TRANSLATE_TRANSLATE_SCRIPT_H_ 95
