1 /***************************************************************************
2  *   Copyright (C) 2010~2012 by CSSlayer                                   *
3  *   wengxt@gmail.com                                                      *
4  *                                                                         *
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19  ***************************************************************************/
20 
21 /**
22  * @addtogroup Fcitx
23  * @{
24  */
25 
26 #ifndef _FCITX_CONTEXT_H_
27 #define _FCITX_CONTEXT_H_
28 
29 #include <fcitx/instance.h>
30 
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34 
35     /** context callback function prototype */
36     typedef void (*FcitxContextCallback)(void* arg, const void* value);
37 
38     /** fcitx context type */
39     typedef struct _FcitxContext FcitxContext;
40 
41     /** fcitx context flag */
42     typedef enum _FcitxContextFlag {
43         FCF_None = 0,
44         FCF_ResetOnInputMethodChange = (1 << 0)
45     } FcitxContextFlag;
46 
47     /** fcitx context value type */
48     typedef enum _FcitxContextType {
49         FCT_Hotkey,
50         FCT_String,
51         FCT_Void,
52         FCT_Boolean
53     } FcitxContextType;
54 
55     /** alternative prevpage key, if this input method requires different key for paging */
56     #define CONTEXT_ALTERNATIVE_PREVPAGE_KEY "CONTEXT_ALTERNATIVE_PREVPAGE_KEY"
57     /** alternative nextpage key, if this input method requires different key for paging */
58     #define CONTEXT_ALTERNATIVE_NEXTPAGE_KEY "CONTEXT_ALTERNATIVE_NEXTPAGE_KEY"
59     /** current input method language */
60     #define CONTEXT_IM_LANGUAGE "CONTEXT_IM_LANGUAGE"
61     /** current input method preferred layout, requires fcitx-xkb to really works */
62     #define CONTEXT_IM_KEYBOARD_LAYOUT "CONTEXT_IM_KEYBOARD_LAYOUT"
63     /** disable built-in autoeng module */
64     #define CONTEXT_DISABLE_AUTOENG "CONTEXT_DISABLE_AUTOENG"
65     /** disable built-in quichphrase module */
66     #define CONTEXT_DISABLE_QUICKPHRASE "CONTEXT_DISABLE_QUICKPHRASE"
67     /** show a built-in remind button or not */
68     #define CONTEXT_SHOW_REMIND_STATUS "CONTEXT_SHOW_REMIND_STATUS"
69     /** disable auto first candidate highlight */
70     #define CONTEXT_DISABLE_AUTO_FIRST_CANDIDATE_HIGHTLIGHT "CONTEXT_DISABLE_AUTO_FIRST_CANDIDATE_HIGHTLIGHT"
71     /** disable auto first candidate highlight */
72     #define CONTEXT_DISABLE_FULLWIDTH "CONTEXT_DISABLE_FULLWIDTH"
73     /** disable punc module */
74     #define CONTEXT_DISABLE_PUNC "CONTEXT_DISABLE_PUNC"
75 
76     /**
77      * @brief register a new global context variable
78      *
79      * @param instance fcitx instance
80      * @param key context name
81      * @param type contex value type
82      * @param flag context flag
83      * @return void
84      **/
85     void FcitxInstanceRegisterWatchableContext(FcitxInstance* instance, const char* key, FcitxContextType type, unsigned int flag );
86 
87     /**
88      * @brief bind a callback function to this context, callback will be called when context value changed.
89      *
90      * @param instance fcitx instance
91      * @param key context name
92      * @param callback callback function
93      * @param arg extra argument to the callback
94      * @return void
95      **/
96     void FcitxInstanceWatchContext(FcitxInstance* instance, const char* key, FcitxContextCallback callback, void* arg);
97 
98     /**
99      * @brief update the value of a context
100      *
101      * @param instance instance
102      * @param key context name
103      * @param value context value
104      * @return void
105      **/
106     void FcitxInstanceSetContext(FcitxInstance* instance, const char* key, const void* value);
107     /**
108      * @brief get string type context value
109      *
110      * @param instance fcitx instance
111      * @param key contex name
112      * @return const char*
113      **/
114     const char* FcitxInstanceGetContextString(FcitxInstance* instance, const char* key);
115     /**
116      * @brief get boolean type context value
117      *
118      * @param instance fcitx instance
119      * @param key context name
120      * @return boolean
121      **/
122     boolean FcitxInstanceGetContextBoolean(FcitxInstance* instance, const char* key);
123     /**
124      * @brief get hotkey type context value
125      *
126      * @param instance fcitx instance
127      * @param key key
128      * @return const FcitxHotkey*
129      **/
130     const FcitxHotkey* FcitxInstanceGetContextHotkey(FcitxInstance* instance, const char* key);
131 
132     static inline const FcitxHotkey*
FcitxConfigPrevPageKey(FcitxInstance * instance,FcitxGlobalConfig * fc)133     FcitxConfigPrevPageKey(FcitxInstance *instance, FcitxGlobalConfig *fc)
134     {
135         const FcitxHotkey *prev = FcitxInstanceGetContextHotkey(
136             instance, CONTEXT_ALTERNATIVE_PREVPAGE_KEY);
137         if (!prev)
138             return fc->hkPrevPage;
139         return prev;
140     }
141 
142     static inline const FcitxHotkey*
FcitxConfigNextPageKey(FcitxInstance * instance,FcitxGlobalConfig * fc)143     FcitxConfigNextPageKey(FcitxInstance *instance, FcitxGlobalConfig *fc)
144     {
145         const FcitxHotkey *next = FcitxInstanceGetContextHotkey(
146             instance, CONTEXT_ALTERNATIVE_NEXTPAGE_KEY);
147         if (!next)
148             return fc->hkNextPage;
149         return next;
150     }
151 
152 #ifdef __cplusplus
153 }
154 #endif
155 
156 #endif
157 
158 /**
159  * @}
160  */
161