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/*
Copyright (C) 1999-2006 Id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant 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.

GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/

/*
The following source code is licensed by Id Software and subject to the terms of
its LIMITED USE SOFTWARE LICENSE AGREEMENT, a copy of which is included with
GtkRadiant. If you did not receive a LIMITED USE SOFTWARE LICENSE AGREEMENT,
please contact Id Software immediately at info@idsoftware.com.
*/

#if !defined(INCLUDED_PREFERENCES_H)
#define INCLUDED_PREFERENCES_H

#include "libxml/parser.h"
#include "dialog.h"
#include <list>
#include <map>

void Widget_connectToggleDependency(GtkWidget* self, GtkWidget* toggleButton);

class PreferencesPage
{
  Dialog& m_dialog;
  GtkWidget* m_vbox;
public:
  PreferencesPage(Dialog& dialog, GtkWidget* vbox) : m_dialog(dialog), m_vbox(vbox)
  {
  }
  GtkWidget* appendCheckBox(const char* name, const char* flag, bool& data)
  {
    return m_dialog.addCheckBox(m_vbox, name, flag, data);
  }
  GtkWidget* appendCheckBox(const char* name, const char* flag, const BoolImportCallback& importCallback, const BoolExportCallback& exportCallback)
  {
    return m_dialog.addCheckBox(m_vbox, name, flag, importCallback, exportCallback);
  }
  void appendCombo(const char* name, StringArrayRange values, const IntImportCallback& importCallback, const IntExportCallback& exportCallback)
  {
    m_dialog.addCombo(m_vbox, name, values, importCallback, exportCallback);
  }
  void appendCombo(const char* name, int& data, StringArrayRange values)
  {
    m_dialog.addCombo(m_vbox, name, data, values);
  }
  void appendSlider(const char* name, int& data, gboolean draw_value, const char* low, const char* high, double value, double lower, double upper, double step_increment, double page_increment, double page_size)
  {
    m_dialog.addSlider(m_vbox, name, data, draw_value, low, high, value, lower, upper, step_increment, page_increment, page_size);
  }
  void appendRadio(const char* name, StringArrayRange names, const IntImportCallback& importCallback, const IntExportCallback& exportCallback)
  {
    m_dialog.addRadio(m_vbox, name, names, importCallback, exportCallback);
  }
  void appendRadio(const char* name, int& data, StringArrayRange names)
  {
    m_dialog.addRadio(m_vbox, name, data, names);
  }
  void appendRadioIcons(const char* name, StringArrayRange icons, const IntImportCallback& importCallback, const IntExportCallback& exportCallback)
  {
    m_dialog.addRadioIcons(m_vbox, name, icons, importCallback, exportCallback);
  }
  void appendRadioIcons(const char* name, int& data, StringArrayRange icons)
  {
    m_dialog.addRadioIcons(m_vbox, name, data, icons);
  }
  GtkWidget* appendEntry(const char* name, const IntImportCallback& importCallback, const IntExportCallback& exportCallback)
  {
    return m_dialog.addEntry(m_vbox, name, importCallback, exportCallback);
  }
  GtkWidget* appendEntry(const char* name, int& data)
  {
    return m_dialog.addEntry(m_vbox, name, data);
  }
  GtkWidget* appendEntry(const char* name, const SizeImportCallback& importCallback, const SizeExportCallback& exportCallback)
  {
    return m_dialog.addEntry(m_vbox, name, importCallback, exportCallback);
  }
  GtkWidget* appendEntry(const char* name, std::size_t& data)
  {
    return m_dialog.addEntry(m_vbox, name, data);
  }
  GtkWidget* appendEntry(const char* name, const FloatImportCallback& importCallback, const FloatExportCallback& exportCallback)
  {
    return m_dialog.addEntry(m_vbox, name, importCallback, exportCallback);
  }
  GtkWidget* appendEntry(const char* name, float& data)
  {
    return m_dialog.addEntry(m_vbox, name, data);
  }
  GtkWidget* appendPathEntry(const char* name, bool browse_directory, const StringImportCallback& importCallback, const StringExportCallback& exportCallback)
  {
    return m_dialog.addPathEntry(m_vbox, name, browse_directory, importCallback, exportCallback);
  }
  GtkWidget* appendPathEntry(const char* name, CopiedString& data, bool directory)
  {
    return m_dialog.addPathEntry(m_vbox, name, data, directory);
  }
  GtkWidget* appendSpinner(const char* name, int& data, double value, double lower, double upper)
  {
    return m_dialog.addSpinner(m_vbox, name, data, value, lower, upper);
  }
  GtkWidget* appendSpinner(const char* name, double value, double lower, double upper, const IntImportCallback& importCallback, const IntExportCallback& exportCallback)
  {
    return m_dialog.addSpinner(m_vbox, name, value, lower, upper, importCallback, exportCallback);
  }
  GtkWidget* appendSpinner(const char* name, double value, double lower, double upper, const FloatImportCallback& importCallback, const FloatExportCallback& exportCallback)
  {
    return m_dialog.addSpinner(m_vbox, name, value, lower, upper, importCallback, exportCallback);
  }
};

typedef Callback1<PreferencesPage&> PreferencesPageCallback;

class PreferenceGroup
{
public:
  virtual PreferencesPage createPage(const char* treeName, const char* frameName) = 0;
};

typedef Callback1<PreferenceGroup&> PreferenceGroupCallback;

void PreferencesDialog_addInterfacePreferences(const PreferencesPageCallback& callback);
void PreferencesDialog_addInterfacePage(const PreferenceGroupCallback& callback);
void PreferencesDialog_addDisplayPreferences(const PreferencesPageCallback& callback);
void PreferencesDialog_addDisplayPage(const PreferenceGroupCallback& callback);
void PreferencesDialog_addSettingsPreferences(const PreferencesPageCallback& callback);
void PreferencesDialog_addSettingsPage(const PreferenceGroupCallback& callback);

void PreferencesDialog_restartRequired(const char* staticName);

template<typename Value>
class LatchedValue
{
public:
  Value m_value;
  Value m_latched;
  const char* m_description;

  LatchedValue(Value value, const char* description) : m_latched(value), m_description(description)
  {
  }
  void useLatched()
  {
    m_value = m_latched;
  }
  void import(Value value)
  {
    m_latched = value;
    if(m_latched != m_value)
    {
      PreferencesDialog_restartRequired(m_description);
    }
  }
};

typedef LatchedValue<bool> LatchedBool;
typedef MemberCaller1<LatchedBool, bool, &LatchedBool::import> LatchedBoolImportCaller;

typedef LatchedValue<int> LatchedInt;
typedef MemberCaller1<LatchedInt, int, &LatchedInt::import> LatchedIntImportCaller;

/*!
holds information for a given game
I'm a bit unclear on that still
it holds game specific configuration stuff
such as base names, engine names, some game specific features to activate in the various modules
it is not strictly a prefs thing since the user is not supposed to edit that (unless he is hacking
support for a new game)

what we do now is fully generate the information for this during the setup. We might want to
generate a piece that just says "the game pack is there", but put the rest of the config somwhere
else (i.e. not generated, copied over during setup .. for instance in the game tools directory)
*/
class CGameDescription
{
typedef std::map<CopiedString, CopiedString> GameDescription;

public:
  CopiedString mGameFile; ///< the .game file that describes this game
  GameDescription m_gameDescription;

  CopiedString mGameToolsPath; ///< the explicit path to the game-dependent modules
  CopiedString mGameType; ///< the type of the engine

  const char* getKeyValue(const char* key) const
  {
    GameDescription::const_iterator i = m_gameDescription.find(key);
    if(i != m_gameDescription.end())
    {
      return (*i).second.c_str();
    }
    return "";
  }
  const char* getRequiredKeyValue(const char* key) const
  {
    GameDescription::const_iterator i = m_gameDescription.find(key);
    if(i != m_gameDescription.end())
    {
      return (*i).second.c_str();
    }
    ERROR_MESSAGE("game attribute " << makeQuoted(key) << " not found in " << makeQuoted(mGameFile.c_str()));
    return "";
  }

  CGameDescription(xmlDocPtr pDoc, const CopiedString &GameFile);

  void Dump();
};

extern CGameDescription *g_pGameDescription;

typedef struct _GtkWidget GtkWidget;
class PrefsDlg;

class PreferencesPage;

class StringOutputStream;

/*!
standalone dialog for games selection, and more generally global settings
*/
class CGameDialog : public Dialog
{
protected:
  
  mutable int m_nComboSelect; ///< intermediate int value for combo in dialog box

public:

  /*!
those settings are saved in the global prefs file
I'm too lazy to wrap behind protected access, not sure this needs to be public
NOTE: those are preference settings. if you change them it is likely that you would
have to restart the editor for them to take effect
*/
  /*@{*/
  /*!
what game has been selected
this is the name of the .game file
*/
  CopiedString m_sGameFile;
  /*!
prompt which game to load on startup
*/
  bool m_bGamePrompt;
  /*!
log console to radiant.log
m_bForceLogConsole is an obscure forced latching situation
*/
  bool m_bForceLogConsole;
  /*@}*/

  /*!
the list of game descriptions we scanned from the game/ dir
*/
  std::list<CGameDescription*> mGames;

  CGameDialog() :
    m_sGameFile(""),
    m_bGamePrompt(true),
    m_bForceLogConsole(false)
  {
  }
  virtual ~CGameDialog();

  void AddPacksURL(StringOutputStream &s);
    
  /*!
intialize the game dialog, called at CPrefsDlg::Init
will scan for games, load prefs, and do game selection dialog if needed
*/
  void Init();

  /*!
reset the global settings by removing the file
*/
  void Reset();

  /*!
run the dialog UI for the list of games
*/
  void DoGameDialog();

  /*!
Dialog API
this is only called when the dialog is built at startup for main engine select
*/
  GtkWindow* BuildDialog();

  void GameFileImport(int value);
  void GameFileExport(const IntImportCallback& importCallback) const;

  /*!
construction of the dialog frame
this is the part to be re-used in prefs dialog
for the standalone dialog, we include this in a modal box
for prefs, we hook the frame in the main notebook
build the frame on-demand (only once)
*/
  void CreateGlobalFrame(PreferencesPage& page);

  /*!
global preferences subsystem
XML-based this time, hopefully this will generalize to other prefs
LoadPrefs has hardcoded defaults
NOTE: it may not be strictly 'CGameDialog' to put the global prefs here
could have named the class differently I guess
*/
  /*@{*/
  void LoadPrefs(); ///< load from file into variables
  void SavePrefs(); ///< save pref variables to file
  /*@}*/

private:
  /*!
scan for .game files, load them
*/
  void ScanForGames();

  /*!
inits g_Preferences.m_global_rc_path
*/
  void InitGlobalPrefPath();

  /*!
uses m_nComboItem to find the right mGames
*/
  CGameDescription *GameDescriptionForComboItem();
};

/*!
this holds global level preferences
*/
extern CGameDialog g_GamesDialog;


class texdef_t;

class PrefsDlg : public Dialog
{
public:
protected:
  std::list<CGameDescription *> mGames;
  
public:
  
  GtkWidget *m_notebook;

  virtual ~PrefsDlg()
  {
    g_string_free (m_rc_path, true );
    g_string_free (m_inipath, true );
  }

  /*!
path for global settings
win32: AppPath
linux: ~/.radiant/[version]/
*/
  GString *m_global_rc_path;

  /*!
path to per-game settings
used for various game dependant storage
win32: GameToolsPath
linux: ~/.radiant/[version]/[gamename]/
*/
  GString *m_rc_path;

  /*!
holds per-game settings
m_rc_path+"local.pref"
\todo FIXME at some point this should become XML property bag code too
*/
  GString *m_inipath;

  // initialize the above paths
  void Init();

  /*! Utility function for swapping notebook pages for tree list selections */
  void showPrefPage(GtkWidget* prefpage);

protected:

  /*! Dialog API */
  GtkWindow* BuildDialog();
  void PostModal (EMessageBoxReturn code);
};

extern PrefsDlg g_Preferences;

struct preferences_globals_t
{
    // disabled all INI / registry read write .. used when shutting down after registry cleanup
  bool disable_ini;
  preferences_globals_t() : disable_ini(false)
  {
  }
};
extern preferences_globals_t g_preferences_globals;

typedef struct _GtkWindow GtkWindow;
void PreferencesDialog_constructWindow(GtkWindow* main_window);
void PreferencesDialog_destroyWindow();

void PreferencesDialog_showDialog();

void GlobalPreferences_Init();
void Preferences_Init();

void Preferences_Load();
void Preferences_Save();

void Preferences_Reset();


#endif
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