src/kbsequence.h

   1 // -*- C++ -*-
   2 /**
   3  * \file kbsequence.h
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #ifndef KBSEQUENCE_H
  14 #define KBSEQUENCE_H
  15
  16 #include "frontends/key_state.h"
  17
  18 #include <boost/shared_ptr.hpp>
  19
  20 #include <string>
  21 #include <vector>
  22
  23 class kb_keymap;
  24 class LyXKeySym;
  25 class FuncRequest;
  26
  27 /// Holds a key sequence and the current and standard keymaps
  28 class kb_sequence {
  29 public:
  30         typedef boost::shared_ptr<LyXKeySym> LyXKeySymPtr;
  31         typedef std::vector<LyXKeySymPtr> KeySequence;
  32
  33         friend class kb_keymap;
  34
  35         ///
  36         kb_sequence(kb_keymap * std, kb_keymap * cur)
  37                 : stdmap(std), curmap(cur), deleted_(false) {}
  38
  39         /**
  40          * Add a key to the key sequence and look it up in the curmap
  41          * if the latter is defined.
  42          * @param keysym the key to add
  43          * @param mod modifier mask
  44          * @param nmod which modifiers to mask out for equality test
  45          * @return the action matching this key sequence or LFUN_UNKNOWN_ACTION
  46          */
  47         FuncRequest const &
  48         addkey(LyXKeySymPtr keysym, key_modifier::state mod,
  49                key_modifier::state nmod = key_modifier::none);
  50
  51         /**
  52          * Add a sequence of keys from a string to the sequence
  53          * @return string::npos if OK, else error position in string
  54          *
  55          * Keys in the string must be separated with whitespace;
  56          * Use the keysym names used by XStringToKeysym, f.ex.
  57          * "Space", "a", "Return", ...
  58          * Prefixes are S-, C-, M- for shift, control, meta
  59          * Prefixes can also be ignored by using the Tilde "~"
  60          * f.ex.: "~S-Space".
  61          */
  62         std::string::size_type parse(std::string const & s);
  63
  64         /**
  65          * Return the current sequence as a string.
  66          * @see parse()
  67          */
  68         std::string const print() const;
  69
  70         /**
  71          * Return the current sequence and available options as
  72          * a string. No options are added if no curmap kb map exists.
  73          */
  74         std::string const printOptions() const;
  75
  76         /// Mark the sequence as deleted.
  77         void mark_deleted();
  78
  79         /// Reset sequence to become "deleted"
  80         void reset();
  81
  82         /// clear in full
  83         void clear();
  84
  85         bool deleted() const {
  86                 return deleted_;
  87         }
  88
  89         /// length of sequence
  90         KeySequence::size_type length() const {
  91                 return sequence.size();
  92         }
  93
  94         /// Keymap to use if a new sequence is starting
  95         kb_keymap * stdmap;
  96
  97         /// Keymap to use for the next key
  98         kb_keymap * curmap;
  99
 100 private:
 101         /**
 102          * Array holding the current key sequence as KeySyms.
 103          * If sequence[length - 1] < 0xff it can be used as ISO8859 char
 104          */
 105         KeySequence sequence;
 106
 107         typedef std::pair<key_modifier::state, key_modifier::state>
 108                 modifier_pair;
 109
 110         /// modifiers for keys in the sequence
 111         std::vector<modifier_pair> modifiers;
 112
 113         /// is keysequence deleted ?
 114         bool deleted_;
 115 };
 116
 117 #endif