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| 1 // Copyright (c) 2009 The Chromium OS 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 CHROMEOS_LANGUAGE_H_ |
| 6 #define CHROMEOS_LANGUAGE_H_ |
| 7 |
| 8 #include <string> |
| 9 #include <vector> |
| 10 |
| 11 #include <base/basictypes.h> |
| 12 |
| 13 static const char kFallbackXKBId[] = "USA"; |
| 14 static const char kFallbackXKBDisplayName[] = "US"; |
| 15 |
| 16 namespace chromeos { |
| 17 |
| 18 enum LanguageCategory { |
| 19 LANGUAGE_CATEGORY_XKB, |
| 20 LANGUAGE_CATEGORY_IME, |
| 21 }; |
| 22 |
| 23 // A structure which represents an IME language or a XKB layout. |
| 24 struct InputLanguage { |
| 25 InputLanguage(LanguageCategory category, |
| 26 const std::string& id, |
| 27 const std::string& display_name, |
| 28 const std::string& icon_path) |
| 29 : category(category), |
| 30 id(id), |
| 31 display_name(display_name), |
| 32 icon_path(icon_path) { |
| 33 } |
| 34 |
| 35 InputLanguage() |
| 36 : category(LANGUAGE_CATEGORY_XKB) { |
| 37 } |
| 38 |
| 39 // Languages are sorted by category, then by display_name, then by id. |
| 40 bool operator<(const InputLanguage& other) const { |
| 41 if (category == other.category) { |
| 42 if (display_name == other.display_name) { |
| 43 return id < other.id; |
| 44 } |
| 45 return display_name < other.display_name; |
| 46 } |
| 47 return category < other.category; |
| 48 } |
| 49 |
| 50 bool operator==(const InputLanguage& other) const { |
| 51 return (category == other.category) && (id == other.id); |
| 52 } |
| 53 |
| 54 LanguageCategory category; |
| 55 |
| 56 // An ID that identifies an IME engine or a XKB layout (e.g., "anthy", |
| 57 // "t:latn-post", "chewing"). |
| 58 std::string id; |
| 59 // An IME or layout name which is used in the UI (e.g., "Anthy"). |
| 60 std::string display_name; |
| 61 // Path to an icon (e.g., "/usr/share/ibus-chewing/icons/ibus-chewing.png"). |
| 62 // Empty if it does not exist. |
| 63 std::string icon_path; |
| 64 }; |
| 65 typedef std::vector<InputLanguage> InputLanguageList; |
| 66 |
| 67 // Creates dummy InputLanguageList object. Usually, this function is called only |
| 68 // on development enviromnent where libcros.so does not exist. So, obviously |
| 69 // you can not move this function to libcros.so. This function is called by |
| 70 // src/chrome/browser/chromeos/language_library.cc when EnsureLoaded() fails. |
| 71 inline InputLanguageList* CreateFallbackInputLanguageList() { |
| 72 InputLanguageList* language_list = new InputLanguageList; |
| 73 language_list->push_back( |
| 74 InputLanguage(LANGUAGE_CATEGORY_XKB, |
| 75 kFallbackXKBId, |
| 76 kFallbackXKBDisplayName, |
| 77 "" /* no icon */)); |
| 78 return language_list; |
| 79 } |
| 80 |
| 81 class LanguageStatusConnection; |
| 82 typedef void(*LanguageStatusMonitorFunction)( |
| 83 void* language_library, const InputLanguage& current_language); |
| 84 |
| 85 // Establishes IBus connection to the ibus-daemon and DBus connection to |
| 86 // the candidate window process. |monitor_function| will be called when IME |
| 87 // language or XKB layout is changed. |
| 88 extern LanguageStatusConnection* (*MonitorLanguageStatus)( |
| 89 LanguageStatusMonitorFunction monitor_funcion, void* language_library); |
| 90 |
| 91 // Terminates IBus and DBus connections. |
| 92 extern void (*DisconnectLanguageStatus)(LanguageStatusConnection* connection); |
| 93 |
| 94 // Gets all IME languages and XKB layouts that are currently available. Caller |
| 95 // has to delete the returned list. This function might return NULL on error. |
| 96 extern InputLanguageList* (*GetLanguages)(LanguageStatusConnection* connection); |
| 97 |
| 98 // Changes the current IME engine to |name| and enable IME (when |category| is |
| 99 // LANGUAGE_CATEGORY_IME). Changes the current XKB layout to |name| and disable |
| 100 // IME (when |category| is LANGUAGE_CATEGORY_XKB). |
| 101 extern void (*ChangeLanguage)(LanguageStatusConnection* connection, |
| 102 LanguageCategory category, const char* name); |
| 103 |
| 104 } // namespace chromeos |
| 105 |
| 106 #endif // CHROMEOS_POWER_H_ |
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