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                                 mod |= AltModifier;
  74                                 i += 2;
  75                                 continue;
  76                         default:
  77                                 return i + 1;
  78                         }
  79                 } else if (i + 2 < s.length() && s[i] == '~'
  80                            && s[i + 2] == '-') {
  81                         switch (s[i + 1]) {
  82                         case 's': case 'S':
  83                                 nmod |= ShiftModifier;
  84                                 i += 3;
  85                                 continue;
  86                         case 'c': case 'C':
  87                                 nmod |= ControlModifier;
  88                                 i += 3;
  89                                 continue;
  90                         case 'm': case 'M':
  91                                 nmod |= AltModifier;
  92                                 i += 3;
  93                                 continue;
  94                         default:
  95                                 return i + 2;
  96                         }
  97                 } else {
  98                         string tbuf;
  99                         size_t j = i;
 100                         for (; j < s.length() && s[j] != ' '; ++j)
 101                                 tbuf += s[j];    // (!!!check bounds :-)
 102
 103                         KeySymbol key;
 104                         key.init(tbuf);
 105
 106                         if (!key.isOK())
 107                                 return j;
 108
 109                         i = j;
 110
 111                         addkey(key, mod, nmod);
 112                         mod = NoModifier;
 113                 }
 114         }
 115
 116         // empty sequence?
 117         if (sequence.size() == 0)
 118                 return 0;
 119
 120         // everything is fine
 121         return string::npos;
 122 }
 123
 124
 125 docstring const KeySequence::print(outputFormat format) const
 126 {
 127         docstring buf;
 128
 129         size_t const length = sequence.size();
 130
 131         for (size_t i = 0; i != length; ++i) {
 132                 switch (format) {
 133                 case Portable:
 134                         buf += sequence[i].print(modifiers[i].first, false);
 135                         break;
 136                 case ForGui:
 137                         buf += sequence[i].print(modifiers[i].first, true);
 138                         break;
 139                 case BindFile:
 140                         KeyModifier mod = modifiers[i].first;
 141                         if (mod & ControlModifier)
 142                                 buf += "C-";
 143                         if (mod & AltModifier)
 144                                 buf += "M-";
 145                         if (mod & ShiftModifier)
 146                                 buf += "S-";
 147
 148                         buf += from_utf8(sequence[i].getSymbolName());
 149                         break;
 150                 }
 151                 // append a blank
 152                 if (i + 1 != length)
 153                         buf += ' ';
 154         }
 155         return buf;
 156 }
 157
 158
 159 docstring const KeySequence::printOptions(bool forgui) const
 160 {
 161         docstring buf = print(forgui ? ForGui : Portable);
 162
 163         if (!curmap)
 164                 return buf;
 165
 166         buf += _("   options: ");
 167         buf += curmap->print(forgui ? ForGui : Portable);
 168         return buf;
 169 }
 170
 171
 172 void KeySequence::reset()
 173 {
 174         deleted_ = true;
 175         curmap = stdmap;
 176 }
 177
 178
 179 void KeySequence::clear()
 180 {
 181         sequence.clear();
 182         reset();
 183 }
 184
 185
 186 void KeySequence::removeKey()
 187 {
 188         if (deleted_)
 189                 return;
 190         sequence.pop_back();
 191         modifiers.pop_back();
 192         if (sequence.empty())
 193                 deleted_ = true;
 194 }
 195
 196
 197 } // namespace lyx