lyx_mirror/src/kbsequence.h
Lars Gullik Bjønnes f1c24d1009 *duck*
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4417 a592a061-630c-0410-9148-cb99ea01b6c8
2002-06-18 15:44:30 +00:00

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// -*- C++ -*-
/**
* \file kbsequence.h
* Copyright 2001 the LyX Team
* Read the file COPYING
*/
#ifndef KBSEQUENCE_H
#define KBSEQUENCE_H
#ifdef __GNUG__
#pragma interface
#endif
#include <config.h>
#include "frontends/key_state.h"
#include "frontends/LyXKeySym.h"
#include "LString.h"
#include <vector>
class kb_keymap;
/// Holds a key sequence and the current and standard keymaps
class kb_sequence {
public:
typedef std::vector<LyXKeySymPtr> KeySequence;
friend class kb_keymap;
///
kb_sequence(kb_keymap * std, kb_keymap * cur)
: stdmap(std), curmap(cur), deleted_(false) {}
/**
* Add a key to the key sequence and look it up in the curmap
* if the latter is defined.
* @param keysym the key to add
* @param mod modifier mask
* @param nmod which modifiers to mask out for equality test
* @return the action matching this key sequence or LFUN_UNKNOWN_ACTION
*/
int addkey(LyXKeySymPtr keysym, key_modifier::state mod,
key_modifier::state nmod = key_modifier::none);
/**
* Add a sequence of keys from a string to the sequence
* @return string::npos if OK, else error position in string
*
* Keys in the string must be separated with whitespace;
* Use the keysym names used by XStringToKeysym, f.ex.
* "Space", "a", "Return", ...
* Prefixes are S-, C-, M- for shift, control, meta
* Prefixes can also be ignored by using the Tilde "~"
* f.ex.: "~S-Space".
*/
string::size_type parse(string const & s);
/**
* Return the current sequence as a string.
* @see parse()
*/
string const print() const;
/**
* Return the current sequence and available options as
* a string. No options are added if no curmap kb map exists.
*/
string const printOptions() const;
/// Mark the sequence as deleted.
void mark_deleted();
/**
* Return the value of the last keysym in the sequence
* in the local ISO encoding. If it does not encode
* in this encoding, return 0.
*/
char getLastKeyEncoded() const;
/// Reset sequence to become "deleted"
void reset();
/// clear in full
void clear();
bool deleted() const {
return deleted_;
}
/// length of sequence
KeySequence::size_type length() const {
return sequence.size();
}
/// Keymap to use if a new sequence is starting
kb_keymap * stdmap;
/// Keymap to use for the next key
kb_keymap * curmap;
private:
/// get the keysym of last in sequence
LyXKeySymPtr getsym() const;
/**
* Array holding the current key sequence as KeySyms.
* If sequence[length-1] < 0xff it can be used as ISO8859 char
*/
KeySequence sequence;
typedef std::pair<key_modifier::state, key_modifier::state>
modifier_pair;
/// modifiers for keys in the sequence
std::vector<modifier_pair> modifiers;
/// is keysequence deleted ?
bool deleted_;
};
#endif