//
//  This script was created
//  by Mircho Mirev
//  mo /mo@momche.net/
//
//	:: feel free to use it for non-commercial use BUT
//	:: if you want to use this code PLEASE send me a note
//	:: and please keep this disclaimer intact
//

//translation routines
var cOffLang =
{
	sName : 'OFF',
	sDName : 'OFF', //display name
	sMap : '',
	sRData : ''
};
var cCyrPho =
{
	sName : 'Bulgarian Cyrillc Phonetic',
	sDName : 'PHO', //display name
	sMap : 'aAbBwWgGdDeEvVzZiIjJkKlLmMnNoOpPrRsStTuUfFhHcC`~[{]}yYxX\\|qQ',
	sRData : 'àÀáÁâÂãÃäÄåÅæÆçÇèÈéÉêÊëËìÌíÍîÎïÏðÐñÑòÒóÓôÔõÕöÖ÷×øØùÙúÚüÜþÞÿß'
};
var cCyrBds =
{
	sName : 'Bulgarian Cyrillc',
	sDName : 'BDS', //display name
	sMap : 'dD/?lLhHoOeEgGpPrRxXuU.>;:kKfFmM,<iIjJwWbBnN[{\'"tTyYcCaAzZsSvVqQ]}@#$^&*()_+`~',
	sRData : 'àÀáÁâÂãÃäÄåÅæÆçÇèÈéÉêÊëËìÌíÍîÎïÏðÐñÑòÒóÓôÔõÕöÖ÷×øØùÙúÚüÜþÞÿßýÝûÛ;§?+"=:/-#|V)('
};

var cTranslator = 
{
	bDisabled : false,
	bUseKeySwitch : true,
	sGlobalLangID : cOffLang.sDName,
	bHelp : true,
	hCurrentLang : '',
	hCurrentInput : null,
	aLanguages : [],
	onSwitchLang : null
};

cTranslator.registerLang = function( hLang )
{
	this.aLanguages[ hLang.sDName ] = hLang;
};

//change here to exclude some of the available languages
cTranslator.registerLang( cOffLang );
cTranslator.registerLang( cCyrPho );
cTranslator.registerLang( cCyrBds );

cTranslator.switchLang = function( sLang )
{
	if( typeof ( this.aLanguages[ sLang ] ) != 'undefined' )
	{
		this.hCurrentLang = this.aLanguages[ sLang ];
	}
	if( this.onSwitchLang != null )
	{
		this.onSwitchLang( sLang );
	}
	cTranslator.displayLanguage( sLang );	
	if( typeof CookieManager != 'undefined' )
	{
		CookieManager.setCookie( 'molang', sLang, 1 );
	}
};

cTranslator.getNextLang = function( sCL )
{
	var bFound = false;
	for( sKey in this.aLanguages  )
	{
		if( typeof this.aLanguages[ sKey ] == 'function' )
		{
			continue;
		}
		if( bFound )
		{
			return sKey;
		}
		if( sCL == sKey )
		{
			bFound = true;
		}
	}
	if( bFound )
	{
		return cOffLang.sDName;
	}
};

cTranslator.toggleLang = function( hElement )
{
	var sNewLangID = '';
	if( typeof hElement == 'undefined' || hElement === null )
	{
		sNewLangID = this.getNextLang( this.sGlobalLangID );
		this.sGlobalLangID = sNewLangID;
	}
	else
	{
		var sLangAtt = hElement.getAttribute( 'MOLANG' );
		if( sLangAtt != 'DEFAULT' )
		{
			sNewLangID = this.getNextLang( sLangAtt );
			hElement.setAttribute( 'MOLANG', sNewLangID );
		}
		else
		{
			sNewLangID = this.getNextLang( this.sGlobalLangID );
			this.sGlobalLangID = sNewLangID;
		}
		hElement.focus();
	}
	this.switchLang( sNewLangID );
};

cTranslator.initLanguage = function( hEvent )
{
 	if( hEvent === null )
	{
		hEvent = window.event;
	}
	hElement = ( hEvent.srcElement ) ? hEvent.srcElement : hEvent.originalTarget ;
	cTranslator.hCurrentInput = hElement;
	var sLangAtt = hElement.getAttribute( 'MOLANG' );
	if( sLangAtt != 'DEFAULT' )
	{
		cTranslator.switchLang( hElement.getAttribute( 'MOLANG' ) );
	}
	else
	{
		cTranslator.switchLang( cTranslator.sGlobalLangID );
	}
	return true;
};

cTranslator.processKey = function( hEvent )
{
	if( hEvent === null )
	{	
		hEvent = window.event;
	}
	hElement = ( hEvent.srcElement ) ? hEvent.srcElement : hEvent.originalTarget ;
	var nCode = hEvent.keyCode ? hEvent.keyCode : hEvent.charCode ? hEvent.charCode : hEvent.which ? hEvent.which : 0;
	if( ( hEvent.charCode != null ) && ( hEvent.charCode != nCode ) )
	{
		return;
	}
	var sCode = String.fromCharCode( nCode );
	var nPos = cTranslator.hCurrentLang.sMap.indexOf( sCode );
	var hE;
	if( nPos >= 0 && !hEvent.ctrlKey && !hEvent.altKey )
	{
		sRep = cTranslator.hCurrentLang.sRData.charAt( nPos );
		if( window.event ) //we have IE
		{
			window.event.keyCode = sRep.charCodeAt();
		}
		else //no we have some kind of moz
		{
			//https://bugzilla.mozilla.org/show_bug.cgi?id=289940
			if( this.ffVer < 1.5 && this.firefoxVersion != '1.0.6' && this.firefoxVersion != '1.0.5' )
			{
				if( window.KeyEvent ) 
				{
					hE = document.createEvent( 'KeyEvents' );
					hE.initKeyEvent( 'keypress', true, true, document.defaultView, hEvent.ctrlKey, hEvent.altKey, hEvent.shiftKey, hEvent.metaKey, 1, sRep.charCodeAt() );
				} 
				else
				{
					hE = document.createEvent( 'UIEvents' );
					hE.initUIEvent( 'keypress', true, true, document.defaultView, 1 );
					hE.keyCode = sRep.charCodeAt();
				}
				hE.preventDefault();
				hElement.dispatchEvent( hE );
			}
			else
			{
				var nScrollTop = hElement.scrollTop;
				var nScrollLeft = hElement.scrollLeft;
				var nScrollWidth = hElement.scrollWidth;
				var nScrollHeight = hElement.scrollHeight;
				var nSelectionStart = hElement.selectionStart;
				cTranslator.replaceSelection( hElement, sRep );
				var nW = hElement.scrollWidth - nScrollWidth;
				var nH = hElement.scrollHeight - nScrollHeight;
				
				if( hElement.scrollTop == 0 )
				{
					hElement.scrollTop = nScrollTop + nH;
				}
				
				hElement.selectionStart = nSelectionStart + sRep.length;
				hElement.selectionEnd = nSelectionStart + sRep.length;
			}
		}
		if( hEvent.preventDefault )
		{
			hEvent.preventDefault();
		}
	}
	hEvent.returnValue = true;
	return true;
};

cTranslator.install = function( hElement )
{
	if( document.attachEvent ) 
	{
		hElement.attachEvent( 'onfocus', cTranslator.initLanguage );
		hElement.attachEvent( 'onkeypress', cTranslator.processKey );
	}
	else if( document.addEventListener )
	{
		hElement.addEventListener( 'focus', cTranslator.initLanguage, false );
		hElement.addEventListener( 'keypress', cTranslator.processKey, false );
	}
};

cTranslator.init = function()
{
	var nI = 0;
	var sLangAtt;
	var aInputs = document.getElementsByTagName( 'INPUT' );
	for( nI = 0; nI < aInputs.length; nI ++ )
	{
		if( aInputs[ nI ].type.toLowerCase() == 'text' )
		{
		 	sLangAtt = aInputs[ nI ].getAttribute( 'MOLANG' );
			if( sLangAtt )
			{
				cTranslator.install( aInputs[ nI ] );
			}
		}
	}
	var aTextAreas = document.getElementsByTagName( 'TEXTAREA' );
	for( nI = 0; nI < aTextAreas.length; nI ++ )
	{
	 	sLangAtt = aTextAreas[ nI ].getAttribute( 'MOLANG' );
		if( sLangAtt )
		{
			cTranslator.install( aTextAreas[ nI ] );
		}
	}
	var sLang = null;
	if( typeof CookieManager != 'undefined' )
	{
		sLang = CookieManager.getCookie( 'molang' );
	}
	if( ( sLang != null ) && ( sLang != 'undefined' ) )
	{
		this.sGlobalLangID = sLang;
	}
	this.switchLang( this.sGlobalLangID );
	
	var hFireFoxVer =  new RegExp( 'Firefox/([0-9\.]*)', 'ig' );
	hFireFoxVer.exec( navigator.userAgent );
	this.firefoxVersion = RegExp.$1;
	this.ffVer = parseFloat( RegExp.$1 );
};

//replace incoming characters

//the functions used to translate
cTranslator.setSelectionRange = function( input, selectionStart, selectionEnd ) 
{
	if ( input.setSelectionRange )
	{
		input.focus();
		input.setSelectionRange(selectionStart, selectionEnd);
	}
	else if ( input.createTextRange )
	{
		var range = input.createTextRange();
		range.collapse(true);
		range.moveEnd('character', selectionEnd);
		range.moveStart('character', selectionStart);
		range.select();
	}
};

//mozilla only
cTranslator.replaceSelection = function( input, replaceString ) 
{
	if ( input.setSelectionRange )
	{
		var selectionStart = input.selectionStart;
		var selectionEnd = input.selectionEnd;
		input.value = 	[ input.value.substring(0, selectionStart), replaceString, input.value.substring(selectionEnd) ].join('');
		cTranslator.setSelectionRange(input, selectionStart + replaceString.length, selectionStart + replaceString.length);
	} 
};

//attach to onload event
cTranslator.onKeySwitch = function( hEvent )
{
	if( cTranslator.bUseKeySwitch )
	{
		if( hEvent === null ) 
		{
			hEvent = window.event;
		}
		var nCode = hEvent.keyCode ? hEvent.keyCode : hEvent.charCode ? hEvent.charCode : hEvent.which ? hEvent.which : 0;
		if( hEvent.shiftKey && hEvent.ctrlKey && ( nCode == 16 || nCode == 17 ) )
		{
			cTranslator.hKeySwitchTimeout = setTimeout( function() { cTranslator.doKeySwitch(); }, 500 );
		}
		else
		{
			clearTimeout( cTranslator.hKeySwitchTimeout );
		}
	}
};

cTranslator.onKeyUp = function( hEvent )
{
	if( hEvent === null )
	{
		hEvent = window.event;
	}
	var nCode = hEvent.keyCode ? hEvent.keyCode : hEvent.charCode ? hEvent.charCode : hEvent.which ? hEvent.which : 0;
	if( nCode == 0 )
	{
		clearTimeout( cTranslator.hKeySwitchTimeout );
	}
};

cTranslator.doKeySwitch = function()
{
	cTranslator.toggleLang( cTranslator.hCurrentInput );
};

cTranslator.onLoad = function()
{
	if( cTranslator.bDisabled ) 
	{
		cTranslator.displayLanguage( '...', 'disabled' );
		return;
	}
	cTranslator.onSwitchLang = cTranslator.displayLanguage;
	
	cTranslator.init();

	var hLink = document.getElementById( 'langLink' );
	if( hLink != null )
	{
		hLink.onclick = function() { cTranslator.toggleLang( cTranslator.hCurrentInput ); return false; };
		
		var hHelpLink = document.getElementById( 'langHelpLink' );
		if( hHelpLink != null )
		{
			hHelpLink.href = "http://momche.net/redir.php?page=inputlocalehelp";
		}
	}

	if( document.attachEvent )
	{
	   document.attachEvent( 'onkeydown', cTranslator.onKeySwitch );
	   document.attachEvent( 'onkeyup', cTranslator.onKeyUp );
	}
	else if( document.addEventListener )
	{
	   document.addEventListener( 'keydown', cTranslator.onKeySwitch, false );
	   document.addEventListener( 'keyup', cTranslator.onKeyUp, false );
	}

};
cTranslator.displayLanguage = function( sLang, sTitle )
{
	var hLink = document.getElementById( 'langLink' );
	if( typeof sTitle == 'undefined' )
	{
		sTitle = '';
	}
	if( hLink != null )
	{
		hLink.innerHTML = sLang;
		hLink.title = sTitle;
	}
};
if( window.attachEvent )
{
	window.attachEvent( 'onload', cTranslator.onLoad );
}
else if( window.addEventListener )
{
	window.addEventListener( 'load', cTranslator.onLoad, false );
}