vmap/include/preferencesystem.cpp

/*
   Copyright (C) 2001-2006, William Joseph.
   All Rights Reserved.

   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
 */

#if 0

#include "preferencesystem.h"
#include "preferencedictionary.h"

#include "xml/xmlparser.h"
#include "xml/xmlwriter.h"


void LoadPrefs( PreferenceDictionary& preferences, const char* filename ){
	TextFileInputStream file( filename );
	if ( !file.failed() ) {
		XMLStreamParser parser( file );
		XMLPreferenceDictionaryImporter importer( preferences );
		parser.exportXML( importer );
	}
	else
	{
		// error
	}
}

void SavePrefs( PreferenceDictionary& preferences, const char* filename ){
	TextFileOutputStream file( filename );
	if ( !file.failed() ) {
		XMLStreamWriter writer( file );
		XMLPreferenceDictionaryExporter exporter( preferences, "1" );
		exporter.exportXML( writer );
	}
	else
	{
		// error
	}
}


class StringPreference
{
public:
class Observer
{
public:
virtual void onChanged() = 0;
};

private:
CopiedString m_string;
Observer& m_observer;
public:
StringPreference( Observer& observer )
	: m_observer( observer ){
}
void importString( const char* value ){
	m_string = value;
	m_observer.onChanged();
}
typedef MemberCaller<StringPreference, void(const char*), &StringPreference::importString> ImportStringCaller;
void exportString( Callback<void(const char *)>& importer ){
	importer( m_string.c_str() );
}
typedef MemberCaller<StringPreference, void(Callback<void(const char *)>&), &StringPreference::exportString> ExportStringCaller;
};

inline void int_export( int i, Callback<void(const char *)>& importer ){
	char buffer[16];
	sprintf( buffer, "%d", i );
	importer( buffer );
}

inline int int_import( const char* value ){
	return atoi( value );
}

class IntPreference
{
public:
class Observer
{
public:
virtual void onChanged() = 0;
};

private:
int m_int;
Observer& m_observer;
public:

IntPreference( Observer& observer )
	: m_observer( observer ){
}
void importString( const char* value ){
	m_int = int_import( value );
	m_observer.onChanged();
}
typedef MemberCaller<IntPreference, void(const char*), &IntPreference::importString> ImportStringCaller;
void exportString( Callback<void(const char *)>& importer ){
	int_export( m_int, importer );
}
typedef MemberCaller<IntPreference, void(Callback<void(const char *)>&), &IntPreference::exportString> ExportStringCaller;
};

class IntPreferenceImporter
{
int& m_i;
public:

IntPreferenceImporter( int& i )
	: m_i( i ){
}
void importString( const char* value ){
	m_i = int_import( value );
}
};


class TestPrefs
{
public:
TestPrefs(){
	PreferenceDictionary preferences;

	class StringObserver : public StringPreference::Observer
	{
public:
	void onChanged(){
		int bleh = 0;
	}
	} string_observer;
	StringPreference string1( string_observer );
	string1.importString( "twenty-three" );

	class IntObserver : public IntPreference::Observer
	{
public:
	void onChanged(){
		int bleh = 0;
	}

	} int_observer;
	IntPreference int1( int_observer );
	int1.importString( "23" );

	preferences.registerPreference( "string1", StringPreference::ImportStringCaller( string1 ), StringPreference::ExportStringCaller( string1 ) );
	preferences.registerPreference( "int1", IntPreference::ImportStringCaller( int1 ), IntPreference::ExportStringCaller( int1 ) );

	LoadPrefs( preferences, "test.pref" );
	SavePrefs( preferences, "test.pref" );

}
};

#if 0
TestPrefs g_TestPrefs;
#endif

void readpref( PreferenceDictionary& preferences, int& int_variable ){
	PreferenceDictionary::iterator i = preferences.find( "int_variable" );
	IntPreferenceImporter importer( int_variable );
	( *i ).second.exporter().exportString( importer );
}

void writepref( PreferenceDictionary& preferences, int& int_variable ){
	PreferenceDictionary::iterator i = preferences.find( "int_variable" );
	int_export( int_variable, ( *i ).second.importer() );
}
#endif