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
  17 #include "gettext.h"
  18 #include "KeyMap.h"
  19 #include "lfuns.h"
  20
  21 #include "frontends/KeySymbol.h"
  22
  23 using std::make_pair;
  24 using std::string;
  25
  26
  27 namespace lyx {
  28
  29
  30 FuncRequest const &
  31 KeySequence::addkey(KeySymbolPtr key,
  32                     key_modifier::state mod, key_modifier::state nmod)
  33 {
  34         // adding a key to a deleted sequence
  35         // starts a new sequence
  36         if (deleted_) {
  37                 deleted_ = false;
  38                 sequence.clear();
  39                 modifiers.clear();
  40         }
  41
  42         modifiers.push_back(make_pair(mod, nmod));
  43         sequence.push_back(key);
  44
  45         if (curmap) {
  46                 return curmap->lookup(key, mod, this);
  47         }
  48
  49         static FuncRequest unknown(LFUN_UNKNOWN_ACTION);
  50         return unknown;
  51 }
  52
  53
  54 size_t KeySequence::parse(string const & s)
  55 {
  56         if (s.empty())
  57                 return 1;
  58
  59         size_t i = 0;
  60         key_modifier::state mod = key_modifier::none;
  61         key_modifier::state nmod = key_modifier::none;
  62
  63         while (i < s.length()) {
  64                 if (s[i] == ' ')
  65                         ++i;
  66                 if (i >= s.length())
  67                         break;
  68
  69                 if (i + 1 < s.length() && s[i + 1] == '-') {
  70                         switch (s[i]) {
  71                         case 's': case 'S':
  72                                 mod |= key_modifier::shift;
  73                                 i += 2;
  74                                 continue;
  75                         case 'c': case 'C':
  76                                 mod |= key_modifier::ctrl;
  77                                 i += 2;
  78                                 continue;
  79                         case 'm': case 'M':
  80                                 mod |= key_modifier::alt;
  81                                 i += 2;
  82                                 continue;
  83                         default:
  84                                 return i + 1;
  85                         }
  86                 } else if (i + 2 < s.length() && s[i] == '~'
  87                            && s[i + 2] == '-') {
  88                         switch (s[i + 1]) {
  89                         case 's': case 'S':
  90                                 nmod |= key_modifier::shift;
  91                                 i += 3;
  92                                 continue;
  93                         case 'c': case 'C':
  94                                 nmod |= key_modifier::ctrl;
  95                                 i += 3;
  96                                 continue;
  97                         case 'm': case 'M':
  98                                 nmod |= key_modifier::alt;
  99                                 i += 3;
 100                                 continue;
 101                         default:
 102                                 return i + 2;
 103                         }
 104                 } else {
 105                         string tbuf;
 106                         size_t j = i;
 107                         for (; j < s.length() && s[j] != ' '; ++j)
 108                                 tbuf += s[j];    // (!!!check bounds :-)
 109
 110                         KeySymbolPtr key(createKeySymbol());
 111                         key->init(tbuf);
 112
 113                         if (!key->isOK())
 114                                 return j;
 115
 116                         i = j;
 117
 118                         addkey(key, mod, nmod);
 119                         mod = key_modifier::none;
 120                 }
 121         }
 122
 123         // empty sequence?
 124         if (sequence.size() == 0)
 125                 return 0;
 126
 127         // everything is fine
 128         return string::npos;
 129 }
 130
 131
 132 docstring const KeySequence::print(bool forgui) const
 133 {
 134         docstring buf;
 135
 136         size_t const length = sequence.size();
 137
 138         for (size_t i = 0; i < length; ++i) {
 139                 buf += sequence[i]->print(modifiers[i].first, forgui);
 140                 // append a blank
 141                 if (i + 1 < length)
 142                         buf += ' ';
 143         }
 144         return buf;
 145 }
 146
 147
 148 docstring const KeySequence::printOptions(bool forgui) const
 149 {
 150         docstring buf;
 151
 152         buf += print(forgui);
 153
 154         if (!curmap)
 155                 return buf;
 156
 157         buf += _("   options: ");
 158         buf += curmap->print(forgui);
 159         return buf;
 160 }
 161
 162
 163 void KeySequence::mark_deleted()
 164 {
 165         deleted_ = true;
 166 }
 167
 168
 169 void KeySequence::reset()
 170 {
 171         mark_deleted();
 172         curmap = stdmap;
 173 }
 174
 175 void KeySequence::clear()
 176 {
 177         sequence.clear();
 178         reset();
 179 }
 180
 181
 182 } // namespace lyx