src/trans_mgr.h

   1 // -*- C++ -*-
   2 #ifndef _Trans_Manager_h_
   3 #define _Trans_Manager_h_
   4
   5 #ifdef __GNUG__
   6 #pragma interface
   7 #endif
   8
   9 #include "tex-accent.h"
  10 #include "trans_decl.h"
  11
  12 class LyXText;
  13 class LString;
  14 class CharacterSet;
  15 class Trans;
  16
  17 /// Translation State
  18 class TransState {
  19 public:
  20         ///
  21         virtual ~TransState();
  22         ///
  23         virtual string normalkey(char,char*)=0;
  24         ///
  25         virtual bool backspace()=0;
  26         ///
  27         virtual string deadkey(char,KmodInfo)=0;
  28         ///
  29         static const char TOKEN_SEP;
  30 };
  31
  32
  33 /// Translation FSM
  34 class TransFSMData {
  35 protected:
  36         ///
  37         virtual ~TransFSMData()
  38         {}
  39         ///
  40         char deadkey_;
  41         ///
  42         KmodInfo deadkey_info_;
  43         ///
  44         char deadkey2_;
  45         ///
  46         KmodInfo deadkey2_info_;
  47         ///
  48         KmodException comb_info_;
  49         ///
  50         TransState* init_state_;
  51         ///
  52         TransState* deadkey_state_;
  53         ///
  54         TransState* combined_state_;
  55         ///
  56 public:
  57         ///
  58         TransFSMData();
  59         ///
  60         TransState* currentState;
  61 };
  62
  63
  64 /// Init State
  65 class TransInitState:
  66         virtual public TransFSMData,
  67         public TransState {
  68 public:
  69                 ///
  70                 TransInitState();
  71                 ///
  72                 virtual string normalkey(char,char*);
  73                 ///
  74                 virtual bool backspace() { return true; }
  75                 ///
  76                 virtual string deadkey(char,KmodInfo);
  77 };
  78
  79
  80 /// Deadkey State
  81 class TransDeadkeyState:
  82         virtual public TransFSMData,
  83         public TransState {
  84 public:
  85                 ///
  86                 TransDeadkeyState();
  87                 ///
  88                 virtual string normalkey(char,char*);
  89                 ///
  90                 virtual bool backspace()
  91         {
  92                 currentState=init_state_;
  93                 return false;
  94         }
  95                 ///
  96                 virtual string deadkey(char,KmodInfo);
  97 };
  98
  99
 100 /// Combined State
 101 class TransCombinedState:
 102         virtual public TransFSMData,
 103         public TransState {
 104 public:
 105                 ///
 106                 TransCombinedState();
 107                 ///
 108                 virtual string normalkey(char,char*);
 109                 ///
 110                 virtual bool backspace()
 111         {
 112                 // cancel the second deadkey
 113                 deadkey2_=0;
 114                 deadkey2_info_.accent=TEX_NOACCENT;
 115                 currentState=deadkey_state_;
 116
 117                 return false;
 118         }
 119                 ///
 120                 virtual string deadkey(char,KmodInfo);
 121 };
 122
 123
 124 ///
 125 class TransFSM:
 126         virtual public TransFSMData,
 127         public TransInitState,
 128         public TransDeadkeyState,
 129         public TransCombinedState
 130 {
 131 public:
 132         ///
 133         TransFSM();
 134 };
 135
 136 ///
 137 class TransManager
 138 {
 139 private:
 140         ///
 141         TransFSM trans_fsm_;
 142         ///
 143         Trans* active_;
 144         ///
 145         Trans* t1_;
 146         ///
 147         Trans* t2_;
 148         ///
 149         static Trans* default_;
 150         ///
 151         CharacterSet* chset_;
 152         ///
 153         void insert(string,LyXText*);
 154         ///
 155         void insertVerbatim(const string&,LyXText*);
 156 public:
 157         ///
 158         TransManager();
 159         ///
 160         virtual ~TransManager();
 161         ///
 162         int SetPrimary(string const &);
 163         ///
 164         int SetSecondary(string const &);
 165         ///
 166         void EnablePrimary();
 167         ///
 168         void EnableSecondary();
 169         ///
 170         void DisableKeymap();
 171         ///
 172         bool setCharset(const char*);
 173         ///
 174         bool backspace()
 175         {
 176                 return trans_fsm_.currentState->backspace();
 177         }
 178         ///
 179         void TranslateAndInsert(char,LyXText*);
 180         ///
 181         inline string deadkey(char,KmodInfo);
 182         ///
 183         inline string normalkey(char,char*);
 184         ///
 185         void deadkey(char,tex_accent,LyXText*);
 186
 187 };
 188
 189
 190 string TransManager::normalkey(char c,char *t)
 191 {
 192         return trans_fsm_.currentState->normalkey(c,t);
 193 }
 194
 195
 196 string TransManager::deadkey(char c,KmodInfo t)
 197 {
 198         return trans_fsm_.currentState->deadkey(c,t);
 199 }
 200
 201 #endif