// This defines the interface to the QsciCommand class.
//
// Copyright (c) 2007
// 	Riverbank Computing Limited <info@riverbankcomputing.co.uk>
// 
// This file is part of QScintilla.
// 
// This copy of QScintilla is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option) any
// later version.
// 
// QScintilla is supplied in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
// details.
// 
// You should have received a copy of the GNU General Public License along with
// QScintilla; see the file LICENSE.  If not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.


#ifndef QSCICOMMAND_H
#define QSCICOMMAND_H


#include <qstring.h>

#include <qlist.h>

#include <Qsci/qsciglobal.h>


class QsciScintilla;


//! \brief The QsciCommand class represents an internal editor command that may
//! have one or two keys bound to it.
//!
//! Methods are provided to change the keys bound to the command and to remove
//! a key binding.  Each command has a user friendly description of the command
//! for use in key mapping dialogs.
class QSCINTILLA_EXPORT QsciCommand
{
public:
    //! Binds the key \a key to the command.  If \a key is 0 then the key
    //! binding is removed.  If \a key is invalid then the key binding is
    //! unchanged.  Valid keys are any visible or control character or any
    //! of \c Key_Down, \c Key_Up, \c Key_Left, \c Key_Right, \c Key_Home,
    //! \c Key_End, \c Key_PageUp, \c Key_PageDown, \c Key_Delete,
    //! \c Key_Insert, \c Key_Escape, \c Key_Backspace, \c Key_Tab and
    //! \c Key_Return.  Keys may be modified with any combination of \c SHIFT,
    //! \c CTRL and \c ALT.
    //!
    //! \sa key(), setAlternateKey(), validKey()
    void setKey(int key);

    //! Binds the alternate key \a altkey to the command.  If \a key is 0
    //! then the alternate key binding is removed.
    //!
    //! \sa alternateKey(), setKey(), validKey()
    void setAlternateKey(int altkey);

    //! The key that is currently bound to the command is returned.
    //!
    //! \sa setKey(), alternateKey()
    int key() const {return qkey;}

    //! The alternate key that is currently bound to the command is
    //! returned.
    //!
    //! \sa setAlternateKey(), key()
    int alternateKey() const {return qaltkey;}

    //! If the key \a key is valid then true is returned.
    static bool validKey(int key);

    //! The user friendly description of the command is returned.
    QString description() const;

private:
    friend class QsciCommandSet;

    QsciCommand(QsciScintilla *qs, int msg, int key, int altkey,
            const char *desc);

    int msgId() const {return msgCmd;}
    void bindKey(int key,int &qk,int &scik);

    QsciScintilla *qsCmd;
    int msgCmd;
    int qkey, scikey, qaltkey, scialtkey;
    const char *descCmd;

    QsciCommand(const QsciCommand &);
    QsciCommand &operator=(const QsciCommand &);
};

#endif