src/KeySequence.cpp

   1 /**
   2  * \file KeySequence.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  * \author John Levon
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "KeySequence.h"
  16 #include "KeyMap.h"
  17
  18 #include "support/gettext.h"
  19
  20 #include "frontends/KeySymbol.h"
  21
  22 using namespace std;
  23
  24 namespace lyx {
  25
  26 FuncRequest const & KeySequence::addkey(KeySymbol const & key,
  27         KeyModifier mod, KeyModifier nmod)
  28 {
  29         // adding a key to a deleted sequence
  30         // starts a new sequence
  31         if (deleted_) {
  32                 deleted_ = false;
  33                 sequence.clear();
  34                 modifiers.clear();
  35         }
  36
  37         modifiers.push_back(make_pair(mod, nmod));
  38         sequence.push_back(key);
  39
  40         if (curmap)
  41                 return curmap->lookup(key, mod, this);
  42
  43         return FuncRequest::unknown;
  44 }
  45
  46
  47 size_t KeySequence::parse(string const & s)
  48 {
  49         if (s.empty())
  50                 return 1;
  51
  52         size_t i = 0;
  53         KeyModifier mod = NoModifier;
  54         KeyModifier nmod = NoModifier;
  55
  56         while (i < s.length()) {
  57                 if (s[i] == ' ')
  58                         ++i;
  59                 if (i >= s.length())
  60                         break;
  61
  62                 if (i + 1 < s.length() && s[i + 1] == '-') {
  63                         switch (s[i]) {
  64                         case 's': case 'S':
  65                                 mod |= ShiftModifier;
  66                                 i += 2;
  67                                 continue;
  68                         case 'c': case 'C':
  69                                 mod |= ControlModifier;
  70                                 i += 2;
  71                                 continue;
  72                         case 'm': case 'M':
  73 #if defined(USE_MACOSX_PACKAGING) || defined(USE_META_KEYBINDING)
  74                                 mod |= MetaModifier;
  75                                 i += 2;
  76                                 continue;
  77 #endif
  78                         case 'a': case 'A':
  79                                 mod |= AltModifier;
  80                                 i += 2;
  81                                 continue;
  82                         default:
  83                                 return i + 1;
  84                         }
  85                 } else if (i + 2 < s.length() && s[i] == '~'
  86                            && s[i + 2] == '-') {
  87                         switch (s[i + 1]) {
  88                         case 's': case 'S':
  89                                 nmod |= ShiftModifier;
  90                                 i += 3;
  91                                 continue;
  92                         case 'c': case 'C':
  93                                 nmod |= ControlModifier;
  94                                 i += 3;
  95                                 continue;
  96                         case 'm': case 'M':
  97 #if defined(USE_MACOSX_PACKAGING) || defined(USE_META_KEYBINDING)
  98                                 nmod |= MetaModifier;
  99                                 i += 3;
 100                                 continue;
 101 #endif
 102                         case 'a': case 'A':
 103                                 nmod |= AltModifier;
 104                                 i += 3;
 105                                 continue;
 106                         default:
 107                                 return i + 2;
 108                         }
 109                 } else {
 110                         string tbuf;
 111                         size_t j = i;
 112                         for (; j < s.length() && s[j] != ' '; ++j)
 113                                 tbuf += s[j];    // (!!!check bounds :-)
 114
 115                         KeySymbol key;
 116                         key.init(tbuf);
 117
 118                         if (!key.isOK())
 119                                 return j;
 120
 121                         i = j;
 122
 123                         addkey(key, mod, nmod);
 124                         mod = NoModifier;
 125                 }
 126         }
 127
 128         // empty sequence?
 129         if (sequence.size() == 0)
 130                 return 0;
 131
 132         // everything is fine
 133         return string::npos;
 134 }
 135
 136
 137 docstring const KeySequence::print(outputFormat format) const
 138 {
 139         docstring buf;
 140
 141         size_t const length = sequence.size();
 142
 143         for (size_t i = 0; i != length; ++i) {
 144                 switch (format) {
 145                 case Portable:
 146                         buf += sequence[i].print(modifiers[i].first, false);
 147                         break;
 148                 case ForGui:
 149                         buf += sequence[i].print(modifiers[i].first, true);
 150                         break;
 151                 case BindFile:
 152                         KeyModifier mod = modifiers[i].first;
 153                         if (mod & ControlModifier)
 154                                 buf += "C-";
 155                         if (mod & AltModifier)
 156 #if defined(USE_MACOSX_PACKAGING) || defined(USE_META_KEYBINDING)
 157                                 buf += "A-";
 158                         if (mod & MetaModifier)
 159 #endif
 160                                 buf += "M-";
 161                         if (mod & ShiftModifier)
 162                                 buf += "S-";
 163
 164                         buf += from_utf8(sequence[i].getSymbolName());
 165                         break;
 166                 }
 167                 // append a blank
 168                 if (i + 1 != length)
 169                         buf += ' ';
 170         }
 171         return buf;
 172 }
 173
 174
 175 docstring const KeySequence::printOptions(bool forgui) const
 176 {
 177         docstring buf = print(forgui ? ForGui : Portable);
 178
 179         if (!curmap)
 180                 return buf;
 181
 182         buf += _("   options: ");
 183         buf += curmap->print(forgui ? ForGui : Portable);
 184         return buf;
 185 }
 186
 187
 188 void KeySequence::reset()
 189 {
 190         deleted_ = true;
 191         curmap = stdmap;
 192 }
 193
 194
 195 void KeySequence::clear()
 196 {
 197         sequence.clear();
 198         reset();
 199 }
 200
 201
 202 void KeySequence::removeKey()
 203 {
 204         if (deleted_)
 205                 return;
 206         sequence.pop_back();
 207         modifiers.pop_back();
 208         if (sequence.empty())
 209                 deleted_ = true;
 210 }
 211
 212
 213 } // namespace lyx