/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2004-2011 KiCad Developers, see change_log.txt for contributors.
 *
 * This program 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
 * of the License, or (at your option) any later version.
 *
 * This program is distributed 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 this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

/**
 * @file hotkeys_basic.h
 * @brief Some functions to handle hotkeys in KiCad
 */

#ifndef  HOTKEYS_BASIC_H
#define  HOTKEYS_BASIC_H

#define DEFAULT_HOTKEY_FILENAME_EXT wxT( "hotkeys" )

// A define to allow translation of Hot Key message Info in hotkey help menu
// We do not want to use the _( x ) usual macro from wxWidgets, which calls wxGetTranslation(),
// because the English string is used in key file configuration
// The translated string is used only when displaying the help window.
// Therefore translation tools have to use the "_" and the "_HKI" prefix to extract
// strings to translate
#define _HKI( x ) wxT( x )

class EDA_BASE_FRAME;


/* Identifiers (tags) in key code configuration file (or section names)
 *  .m_SectionTag member of a EDA_HOTKEY_CONFIG
 */
extern wxString g_CommonSectionTag;

/**
 * class EDA_HOTKEY
 * is a class to handle hot key commands.  Hot keys have a default value.
 * This class allows the real key code changed by user(from a key code list file)
 */
class EDA_HOTKEY
{
public:
    int      m_KeyCode;      // Key code (ascii value for ascii keys or wxWidgets code for function key
    wxString m_InfoMsg;      // info message.
    int      m_Idcommand;    // internal id for the corresponding command (see hotkey_id_commnand list)
    int      m_IdMenuEvent;  // id to call the corresponding event (if any) (see id.h)

public:
    EDA_HOTKEY( const wxChar* infomsg, int idcommand, int keycode, int idmenuevent = 0 );
    EDA_HOTKEY( const EDA_HOTKEY* base);
};


/**
 * Structure EDA_HOTKEY_CONFIG
 * contains the information required to save hot key information to a configuration file.
 * a Section name and the corresponding list of hotkeys (EDA_HOTKEY list)
 * hotkeys are grouped by section.
 * a section is a list of hotkey infos ( a EDA_HOTKEY list).
 * A full list of hotkeys can used one or many sections
 * for instance:
 *    the schematic editor uses a common section (zoom hotkeys list ..) and a specific section
 *    the library editor uses the same common section and a specific section
 * this feature avoid duplications and made hotkey file config easier to understand and edit
 */
struct EDA_HOTKEY_CONFIG
{
public:
    wxString*       m_SectionTag;     // The configuration file section name.
    EDA_HOTKEY**    m_HK_InfoList;    // List of EDA_HOTKEY pointers
    wxString*  m_Title;        // Title displayed in hotkey editor and used as comment in file
};


/**
 * Class EDA_HOTKEY_CLIENT_DATA
 * provides client data member for hotkeys to include in command events generated
 * by the hot key.
 */
class EDA_HOTKEY_CLIENT_DATA : public wxClientData
{
    //< Logical position of the mouse cursor when the hot key was pressed.
    wxPoint m_position;

public:
    EDA_HOTKEY_CLIENT_DATA( const wxPoint& aPosition = wxDefaultPosition ) :
        m_position( aPosition ) {}

    ~EDA_HOTKEY_CLIENT_DATA();

    void SetPosition( const wxPoint& aPosition ) { m_position = aPosition; }

    wxPoint GetPosition() { return m_position; }
};


/* Functions:
 */
void AddHotkeyConfigMenu( wxMenu* menu );
void HandleHotkeyConfigMenuSelection( EDA_BASE_FRAME* frame, int id );

/**
 * Function KeyNameFromKeyCode
 * return the key name from the key code
 * * Only some wxWidgets key values are handled for function key ( see
 * s_Hotkey_Name_List[] )
 * @param aKeycode = key code (ascii value, or wxWidgets value for function keys)
 * @param aIsFound = a pointer to a bool to return true if found, or false. an be NULL default)
 * @return the key name in a wxString
 */
wxString KeyNameFromKeyCode( int aKeycode, bool * aIsFound = NULL );

/**
 * Function KeyNameFromCommandId
 * return the key name from the Command id value ( m_Idcommand member value)
 * @param aList = pointer to a EDA_HOTKEY list of commands
 * @param aCommandId = Command Id value
 * @return the key name in a wxString
 */
wxString KeyNameFromCommandId( EDA_HOTKEY** aList, int aCommandId );

/**

 * Function KeyCodeFromKeyName
 * return the key code from its key name
 * Only some wxWidgets key values are handled for function key
 * @param keyname = wxString key name to find in s_Hotkey_Name_List[],
 *   like F2 or space or an usual (ascii) char.
 * @return the key code
 */
int KeyCodeFromKeyName( const wxString& keyname );

/**
 * An helper enum for AddHotkeyName function
 * In menus we can add a hot key, or an accelerator , or sometimes just a comment
 * Hot keys can perform actions using the current mouse cursor position
 * Accelerators perform the same action as the associated menu
 * A comment is used in tool tips for some tools (zoom ..)
 *    to show the hot key that performs this action
 */
enum HOTKEY_ACTION_TYPE
{
    IS_HOTKEY,
    IS_ACCELERATOR,
    IS_COMMENT
};

/**
 * Function AddHotkeyName
 * Add the key name from the Command id value ( m_Idcommand member value)
 * @param aText = a wxString. returns aText + key name
 * @param aList = pointer to a EDA_HOTKEY list of commands
 * @param aCommandId = Command Id value
 * @param aShortCutType The #HOTKEY_ACTION_TYPE of the shortcut.
 * @return a wxString (aTest + key name) if key found or aText without modification
 */
wxString AddHotkeyName( const wxString& aText, EDA_HOTKEY** aList, int aCommandId,
                        HOTKEY_ACTION_TYPE aShortCutType = IS_HOTKEY);

/**
 * Function AddHotkeyName
 * Add the key name from the Command id value ( m_Idcommand member value)
 * @param aText = a wxString. returns aText + key name
 * @param aDescrList = pointer to a EDA_HOTKEY_CONFIG DescrList of commands
 * @param aCommandId = Command Id value
 * @param aShortCutType The #HOTKEY_ACTION_TYPE of the shortcut.
 * @return a wxString (aTest + key name) if key found or aText without modification
 */
wxString AddHotkeyName( const wxString&           aText,
                        struct EDA_HOTKEY_CONFIG* aDescrList,
                        int                       aCommandId,
                        HOTKEY_ACTION_TYPE        aShortCutType = IS_HOTKEY );

/**
 * Function DisplayHotkeyList
 * Displays the current hotkey list
 * @param aFrame = current active frame
 * @param aList = pointer to a EDA_HOTKEY_CONFIG list (Null terminated)
 */
void DisplayHotkeyList( EDA_BASE_FRAME* aFrame, struct EDA_HOTKEY_CONFIG* aList );

/**
 * Function GetDescriptorFromHotkey
 * Returns a EDA_HOTKEY* pointer from a key code for OnHotKey() function
 * @param aKey = key code (ascii value, or wxWidgets value for function keys
 * @param aList = pointer to a EDA_HOTKEY list of commands
 * @return the corresponding EDA_HOTKEY pointer from the EDA_HOTKEY List
 */
EDA_HOTKEY* GetDescriptorFromHotkey( int aKey, EDA_HOTKEY** aList );

/**
 * Function GetDescriptorFromCommand
 * Returns a EDA_HOTKEY* pointer from a hot key identifier.
 * @param aCommand = hot key identifier (@see hotkeys.h)
 * @param aList = pointer to a EDA_HOTKEY list of commands
 * @return the corresponding EDA_HOTKEY pointer from the EDA_HOTKEY List
 */
EDA_HOTKEY* GetDescriptorFromCommand( int aCommand, EDA_HOTKEY** aList );

/**
 * Function ReadHotkeyConfig
 * Read hotkey configuration for a given app,
 * possibly before the frame for that app has been created
 * @param Appname = the value of the app's m_FrameName
 * @param aDescList = the hotkey data
*/
void ReadHotkeyConfig( const wxString& Appname, struct EDA_HOTKEY_CONFIG* aDescList );

void ParseHotkeyConfig( const wxString& data, struct EDA_HOTKEY_CONFIG* aDescList );


// common hotkeys event id
// these hotkey ID are used in many files, so they are define here only once.
enum common_hotkey_id_commnand {
    HK_NOT_FOUND = 0,
    HK_RESET_LOCAL_COORD,
    HK_SET_GRID_ORIGIN,
    HK_RESET_GRID_ORIGIN,
    HK_HELP,
    HK_ZOOM_IN,
    HK_ZOOM_OUT,
    HK_ZOOM_REDRAW,
    HK_ZOOM_CENTER,
    HK_ZOOM_AUTO,
    HK_UNDO,
    HK_REDO,
    HK_COMMON_END
};

#endif // HOTKEYS_BASIC_H