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1 // Copyright (c) 2012 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 CHROMEOS_DBUS_IBUS_IBUS_ENGINE_SERVICE_H_ | |
6 #define CHROMEOS_DBUS_IBUS_IBUS_ENGINE_SERVICE_H_ | |
7 | |
8 #include <string> | |
9 #include "base/bind.h" | |
10 #include "base/callback.h" | |
11 #include "base/memory/scoped_vector.h" | |
12 #include "chromeos/chromeos_export.h" | |
13 #include "chromeos/dbus/dbus_client_implementation_type.h" | |
14 #include "chromeos/dbus/ibus/ibus_constants.h" | |
15 | |
16 namespace chromeos { | |
17 | |
18 class IBusText; | |
19 class IBusEngineHandlerInterface; | |
20 | |
21 // A class to make the actual DBus method call handling for IBusEngine service. | |
22 // The exported method call is used by ibus-demon to process key event, because | |
23 // Chrome works engine service if the extension IME is enabled. This class is | |
24 // managed by DBusThreadManager. | |
25 class CHROMEOS_EXPORT IBusEngineService { | |
26 public: | |
27 // Following value should be same in | |
28 // http://ibus.googlecode.com/svn/docs/ibus-1.4/ibus-ibustypes.html#IBusPreedi
tFocusMode | |
29 enum IBusEnginePreeditFocusOutMode { | |
30 IBUS_ENGINE_PREEEDIT_FOCUS_OUT_MODE_CLEAR = 0, | |
31 IBUS_ENGINE_PREEEDIT_FOCUS_OUT_MODE_COMMIT = 1, | |
32 }; | |
33 | |
34 virtual ~IBusEngineService(); | |
35 | |
36 // Sets a new IBus engine handler and old handler will be overridden. | |
37 // This class doesn't take the ownership of |handler|. | |
38 virtual void SetEngine(IBusEngineHandlerInterface* handler) = 0; | |
39 | |
40 // Unsets the IBus engine handler if |handler| equals to current engine | |
41 // handler. | |
42 virtual void UnsetEngine(IBusEngineHandlerInterface* handler) = 0; | |
43 | |
44 // Emits UpdatePreedit signal. | |
45 virtual void UpdatePreedit(const IBusText& ibus_text, | |
46 uint32 cursor_pos, | |
47 bool is_visible, | |
48 IBusEnginePreeditFocusOutMode mode) = 0; | |
49 // Emits UpdateAuxiliaryText signal. | |
50 virtual void UpdateAuxiliaryText(const IBusText& ibus_text, | |
51 bool is_visible) = 0; | |
52 // Emits ForwardKeyEvent signal. | |
53 virtual void ForwardKeyEvent(uint32 keyval, uint32 keycode, uint32 state) = 0; | |
54 // Emits RequireSurroundingText signal. | |
55 virtual void RequireSurroundingText() = 0; | |
56 // Emits DeleteSurroundingText signal. | |
57 virtual void DeleteSurroundingText(int32 offset, uint32 length) = 0; | |
58 | |
59 // Factory function, creates a new instance and returns ownership. | |
60 // For normal usage, access the singleton via DBusThreadManager::Get(). | |
61 static CHROMEOS_EXPORT IBusEngineService* Create(); | |
62 | |
63 protected: | |
64 // Create() should be used instead. | |
65 IBusEngineService(); | |
66 | |
67 private: | |
68 DISALLOW_COPY_AND_ASSIGN(IBusEngineService); | |
69 }; | |
70 | |
71 } // namespace chromeos | |
72 | |
73 #endif // CHROMEOS_DBUS_IBUS_IBUS_ENGINE_SERVICE_H_ | |
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