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         static FuncRequest unknown(LFUN_UNKNOWN_ACTION);
  44         return unknown;
  45 }
  46
  47
  48 size_t KeySequence::parse(string const & s)
  49 {
  50         if (s.empty())
  51                 return 1;
  52
  53         size_t i = 0;
  54         KeyModifier mod = NoModifier;
  55         KeyModifier nmod = NoModifier;
  56
  57         while (i < s.length()) {
  58                 if (s[i] == ' ')
  59                         ++i;
  60                 if (i >= s.length())
  61                         break;
  62
  63                 if (i + 1 < s.length() && s[i + 1] == '-') {
  64                         switch (s[i]) {
  65                         case 's': case 'S':
  66                                 mod |= ShiftModifier;
  67                                 i += 2;
  68                                 continue;
  69                         case 'c': case 'C':
  70                                 mod |= ControlModifier;
  71                                 i += 2;
  72                                 continue;
  73                         case 'm': case 'M':
  74                                 mod |= AltModifier;
  75                                 i += 2;
  76                                 continue;
  77                         default:
  78                                 return i + 1;
  79                         }
  80                 } else if (i + 2 < s.length() && s[i] == '~'
  81                            && s[i + 2] == '-') {
  82                         switch (s[i + 1]) {
  83                         case 's': case 'S':
  84                                 nmod |= ShiftModifier;
  85                                 i += 3;
  86                                 continue;
  87                         case 'c': case 'C':
  88                                 nmod |= ControlModifier;
  89                                 i += 3;
  90                                 continue;
  91                         case 'm': case 'M':
  92                                 nmod |= AltModifier;
  93                                 i += 3;
  94                                 continue;
  95                         default:
  96                                 return i + 2;
  97                         }
  98                 } else {
  99                         string tbuf;
 100                         size_t j = i;
 101                         for (; j < s.length() && s[j] != ' '; ++j)
 102                                 tbuf += s[j];    // (!!!check bounds :-)
 103
 104                         KeySymbol key;
 105                         key.init(tbuf);
 106
 107                         if (!key.isOK())
 108                                 return j;
 109
 110                         i = j;
 111
 112                         addkey(key, mod, nmod);
 113                         mod = NoModifier;
 114                 }
 115         }
 116
 117         // empty sequence?
 118         if (sequence.size() == 0)
 119                 return 0;
 120
 121         // everything is fine
 122         return string::npos;
 123 }
 124
 125
 126 docstring const KeySequence::print(outputFormat format) const
 127 {
 128         docstring buf;
 129
 130         size_t const length = sequence.size();
 131
 132         for (size_t i = 0; i != length; ++i) {
 133                 switch (format) {
 134                 case Portable:
 135                         buf += sequence[i].print(modifiers[i].first, false);
 136                         break;
 137                 case ForGui:
 138                         buf += sequence[i].print(modifiers[i].first, true);
 139                         break;
 140                 case BindFile:
 141                         KeyModifier mod = modifiers[i].first;
 142                         if (mod & ControlModifier)
 143                                 buf += "C-";
 144                         if (mod & AltModifier)
 145                                 buf += "M-";
 146                         if (mod & ShiftModifier)
 147                                 buf += "S-";
 148
 149                         buf += from_utf8(sequence[i].getSymbolName());
 150                         break;
 151                 }
 152                 // append a blank
 153                 if (i + 1 != length)
 154                         buf += ' ';
 155         }
 156         return buf;
 157 }
 158
 159
 160 docstring const KeySequence::printOptions(bool forgui) const
 161 {
 162         docstring buf = print(forgui ? ForGui : Portable);
 163
 164         if (!curmap)
 165                 return buf;
 166
 167         buf += _("   options: ");
 168         buf += curmap->print(forgui ? ForGui : Portable);
 169         return buf;
 170 }
 171
 172
 173 void KeySequence::mark_deleted()
 174 {
 175         deleted_ = true;
 176 }
 177
 178
 179 void KeySequence::reset()
 180 {
 181         mark_deleted();
 182         curmap = stdmap;
 183 }
 184
 185
 186 void KeySequence::clear()
 187 {
 188         sequence.clear();
 189         reset();
 190 }
 191
 192
 193 } // namespace lyx