(function($) {

    var langArray=new Array();
	var codes= new Array();
	var currEdit= null;
    var IsUrdu=1;
    var EditorId=0;
    var gOpts;
    var elName;
    var elIndex;
    var SrcElement;
    var Settings = {
        EditorFont:"Urdu Naskh Asiatype",
        EnglishColor: "#CCCCFF",
        UrduColor: "#99FF99"
      };
	
	codes['a']=0x0627;
	codes['b']=0x0628;
	codes['c']=0x0686;
	codes['d']=0x062F;
	codes['e']=0x0639;
	codes['f']=0x0641;
	codes['g']=0x06AF;
	codes['h']=0x06BE;
	codes['i']=0x06CC;
	codes['j']=0x062C;
	codes['k']=0x06A9;
	codes['l']=0x0644;
	codes['m']=0x0645;
	codes['n']=0x0646;
	codes['o']=0x06C1;
	codes['p']=0x067E;
	codes['q']=0x0642;
	codes['r']=0x0631;
	codes['s']=0x0633;
	codes['t']=0x062A;
	codes['u']=0x0626; 
	codes['v']=0x0637;
	codes['w']=0x0648;
	codes['x']=0x0634;
	codes['y']=0x06D2;
	codes['z']=0x0632;
	
	codes['A']=0x0622;	
	codes['C']=0x062B;
	codes['D']=0x0688;
	codes['E']=0x0651; 
	codes['F']=0x064D; 
	codes['G']=0x063A;
	codes['H']=0x062D;
	codes['I']=0x0670; 
	codes['J']=0x0636;
	codes['K']=0x062E;
	codes['L']=0x0628;
	codes['M']=0x064B; 
	codes['N']=0x06BA;
	codes['O']=0x06C3;
	codes['P']=0x064F; 	
	codes['R']=0x0691;
	codes['S']=0x0635;
	codes['T']=0x0679;
	codes['U']=0x0621;
	codes['V']=0x0638;
	codes['W']=0x0624;
	codes['X']=0x0698;
	codes['Y']=0x0656;
	codes['Z']=0x0630;
	
	codes['>']=0x0650; 
	codes['<']=0x064E; 
	codes[String.fromCharCode(32)]=32; 
	codes[String.fromCharCode(13)]=13;
	codes[':']=0x061B;
	codes[';']=0x061B;
	codes[String.fromCharCode(39)]=0x2018;
	codes[String.fromCharCode(34)]=0x201C;
	codes[String.fromCharCode(46)]=0x06D4;
	codes[String.fromCharCode(44)]=0x060C;
	codes['!']= 0x0021;
	codes['?']=0x061F;
	codes[':']=58;
	
	//codes['[']=0x0654; 
	//codes[']']=0x0655; 
	codes['[']=0x201C; 
	codes[']']=0x201D; 
	codes['{']=0x2018; 
	codes['}']=0x2019; 
	codes['~']=0x0653; 
	codes['^']=0x0652; 
	codes['/']=0x002F; 
	codes['\\']=0x060E; 
	codes['L']=0x064C; 
	codes['+']=0x002B;
	codes['-']=0x002D;
	codes['_']=0x0640;
	codes['*']=0x00D7;
	codes[String.fromCharCode(47)]=0x00F7;
	codes[String.fromCharCode(37)]=0x066A;
	codes['(']=0x0028;
	codes[')']=0x0029;
	codes['=']=0x003D;
	codes['´']=0x0657;

	codes['0']=0x30;
	codes['1']=0x31;
	codes['2']=0x32;
	codes['3']=0x33;
	codes['4']=0x34;
	codes['5']=0x35;
	codes['6']=0x36;
	codes['7']=0x37;
	codes['8']=0x38;
	codes['9']=0x39;

	var Diacritics='[]{}~';
	
    
    $.fn.UrduEditor = function(size, options)
    {
           
        var kbNormal=1;
        var kbShift=2;		
        var kbAlt=3;
        var kbCtrl=4;
        var kbAltGr=5;
        var bToggleFlag=0;
        var CurrentKeyboardState=1;
        SrcElement= $(this).get(0);
        //alert(SrcElement.id);
        //var opts = $.extend({}, $.fn.UrduEditor.defaults, options);
       
        return this.each(function() 
        {   
	  
            var el = this; 
            // set the unique identifier            
            $(el).attr("UrduEditorId", getId());
            setAttributes(el, size)
                        
            // keypress handler
            $(el).keypress(function(e)
            {
                //alert('test');
                //if (!IsUrdu) return;
                var editorId= $(el).attr("UrduEditorId");
                if (!langArray[editorId]) return;
                e = (e) ? e : (window.event) ? event : null;
                
                var charCode = (e.charCode) ? e.charCode :
                        ((e.keyCode) ? e.keyCode :
                       ((e.which) ? e.which : 0));
                var whichASC = charCode ; // key's ASCII code
                var whichChar = String.fromCharCode(whichASC); // key's character
                
                
                if($.browser.msie)
                {
                    if(codes[whichChar]!=null)
                    {
                        event.keyCode= codes[whichChar];
                    }
                }
                else if($.browser.mozilla)
                {
                    if((charCode==13) || (charCode==8)|| (charCode==37) || (charCode==39) ||  (charCode==38)|| (charCode==40)|| (charCode==33) || (charCode==34) || (charCode==46) || (charCode==50)  ) return;
        
                    if(!e.ctrlKey)
                    { 
                        
                        if(codes[whichChar]!=null)
                        {
                            var txt=String.fromCharCode(codes[whichChar]);
                            AddText(txt);		
                            e.preventDefault();
		                    e.stopPropagation();                    	
		                }		                
		            }
                }                                      
            });
                
            $(el).keydown(function(e)
            {
                e = (e) ? e : (window.event) ? event : null;
                if (e)
                {
                    var	charCode = (e.charCode) ?	e.charCode : e.keyCode;
                    
                    if(charCode	== 17)
                    {
                        CurrentKeyboardState = kbCtrl;
                    }
                    else if(CurrentKeyboardState ==	kbCtrl)
                    {
                        if(charCode==32)
                        {
					        $.fn.UrduEditor.ToggleLanguage();
    					    e.preventDefault();
                            e.stopPropagation();
                        }
                    }
                }
            });
            
            $(el).keyup(function(e)
            {
                 e = (e) ? e : (window.event) ? event : null;
                if (e)
                {
                    var	charCode = (e.charCode) ?	e.charCode : e.keyCode;
                    if(charCode	== 17)
                    {
                        CurrentKeyboardState = kbNormal;
                    }
                }                
            });
            
            $(el).focus(function(e)
            {
                if($.browser.mozilla)
                {
	                currEdit=e.target;		
                }
                else if ($.browser.msie)
	                currEdit=window.event.srcElement;
	        })     
        });
        
   
    function getId()
    {
        EditorId++;
        return "UrduEditor_"+EditorId;
    }
	
	function setEditor(e)
    {
	    if($.browser.mozilla)
	    {
		    currEdit=e.target;		
	    }
	    else if ($.browser.msie)
		    currEdit=window.event.srcElement;
    }
    
    function setAttributes(el, pt)
    {
        
	    el.lang="ur";
	    el.dir="rtl";
	    el.wrap="soft";
	    var editorId= $(el).attr("UrduEditorId");
	    langArray[editorId]=1;
	    IsUrdu=1;
    	
	    with(el.style)
	    {
		    fontFamily=$.fn.UrduEditor.defaults.EditorFont;
		    fontSize=pt;
		    backgroundColor=$.fn.UrduEditor.defaults.UrduColor;
	    }
    }
        
    };  
    
  
    $.fn.UrduEditor.SetDefaults=function(options)    
    {
        if(null!= options)
	    {		
		    if(options.EditorFont)
		    {
			    Settings.EditorFont = options.EditorFont;			
		    }		
    		
		    if(options.UrduColor)
		    {
			    Settings.UrduColor = options.UrduColor;			
		    }
    		
		    if(options.EnglishColor)
		    {
			    Settings.EnglishColor = options.EnglishColor;			
		    }
	    }
    };
    
    $.fn.UrduEditor.defaults = {
            EditorFont:"Urdu Naskh Asiatype",
            EnglishColor: "#CCCCFF",
            UrduColor: "#99FF99"
          };
          
    $.fn.UrduEditor.writeToggleControl=function(idx)
        {         
            var el = $("#"+idx)[0]; 
            //el.setAttribute("UrduEditorId", getId());
            var editorId= el.getAttribute("UrduEditorId");
            var strName= idx+"_toggle";    
            //alert(el.name);        
	        //document.writeln('<span class="smallfonteng10">English<input type="radio" value="English" name="'+strName+'"onclick=\'setEnglish($(\"#'+idx+'\")[0])\'>&#1575;&#1585;&#1583;&#1608;<input type="radio" value="Urdu" checked name="'+strName+'" onclick=\'setUrdu($(\"#'+idx+'\")[0])\'></span>'); 
			$("#"+idx).after('<br /><span class="smallfonteng10">English<input type="radio" value="English" name="'+strName+'"onclick=\'setEnglish(jQuery(\"#'+idx+'\")[0])\'>&#1575;&#1585;&#1583;&#1608;<input type="radio" value="Urdu" checked name="'+strName+'" onclick=\'setUrdu(jQuery(\"#'+idx+'\")[0])\'></span>');
        };
        
   $.fn.UrduEditor.ToggleLanguage=function()
    {
        var editorId= $(currEdit).attr("UrduEditorId");
        if(langArray[editorId]==1)        
	    {
		     setEnglish(currEdit);
	    }
	    else
	    {
		    setUrdu(currEdit);
	    }
    };
        
    AddText=function(text) 
	{
		if(!currEdit) return;
	 
		if (currEdit.createTextRange && currEdit.caretPos) {      
			var caretPos = currEdit.caretPos;      
			caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ?
			text + ' ' : text;
			currEdit.focus(caretPos);
		}
		else if (currEdit.selectionStart || currEdit.selectionStart == '0') 
		{ 
			var vTop=currEdit.scrollTop;			
			var startPos = currEdit.selectionStart; 
			var endPos = currEdit.selectionEnd; 
			currEdit.value = currEdit.value.substring(0, startPos) 
						  + text 
						  + currEdit.value.substring(endPos, currEdit.value.length); 
			currEdit.focus(); 
			currEdit.selectionStart = startPos + 1; 
			currEdit.selectionEnd = startPos + 1; 
			currEdit.scrollTop=vTop;
		}
		else 
		{
			currEdit.value += text;
			currEdit.focus(caretPos);	
		}
    }
    
    setUrdu=function(el)
    {
	    IsUrdu=1;
	     var editorId= jQuery(el).attr("UrduEditorId");
	    langArray[editorId]=1;
	    el.focus(1);
	    
	    el.style.backgroundColor=$.fn.UrduEditor.defaults.UrduColor;
	    if (el.createTextRange) 
	    {
		    var caretPos = el.caretPos;
		    el.focus(caretPos);
		    this.currEdit=el;
	    }
	    else if (el.selectionStart || el.selectionStart == '0')
	    {
		    var startPos = el.selectionStart; 
		    el.focus(); 
		    this.currEdit=el;
		    el.selectionStart = startPos + 1; 
		    el.selectionEnd = startPos + 1;
	    }
    };
    
    setEnglish=function(el)
    {

	    IsUrdu=0;
	    var editorId= jQuery(el).attr("UrduEditorId");
	    langArray[editorId]=0;
	    el.style.backgroundColor=$.fn.UrduEditor.defaults.EnglishColor;
	    if (el.createTextRange) 
	    {
		    var caretPos = el.caretPos;
		    el.focus(caretPos);
		    this.currEdit=el;
	    }
	    else if (el.selectionStart || el.selectionStart == '0')
	    {
		    var startPos = el.selectionStart; 
		    el.focus(); 
		    this.currEdit=el;
		    el.selectionStart = startPos + 1; 
		    el.selectionEnd = startPos + 1;
	    }
    };
    
    writeButton=function(caption, str)
	{
			document.writeln('<td class="btnFlat"  width=6% onclick="AddText(\''+ str+ '\');">'+caption+'</td>');
			//document.writeln('<td class="btnFlat"  width=6% onclick="alert(\''+ str+ '\');">'+caption+'</td>');

	};
	
    writeButton2=function(caption, str)
    {
			    document.writeln('<td class="btnFlat" onclick="AddText(\''+ str+ '\');">'+caption+'</td>');
    }

    $.fn.UrduEditor.writeKeyboard=function()
    {
	     document.writeln('<span dir="ltr">');
	     document.writeln('<table   width="100%" style="border: 1px solid #C0C0C0;">');

	     //start of keyboard	 
	     document.writeln('<tr>');
		    writeButton('ر', 'ر' );
		     writeButton('ذ', 'ذ');
		    writeButton('ڈ', 'ڈ' );
		     writeButton('د', 'د');
		     writeButton('خ', 'خ');
		    writeButton('ح', 'ح');
		     writeButton('چ', 'چ' );
		     writeButton('ج', 'ج' );
		    writeButton('ث', 'ث') ;
		     writeButton('ٹ', 'ٹ' );
		     writeButton('ت', 'ت' );
		     writeButton('پ', 'پ' );
		    writeButton('ب', 'ب');
		     writeButton('آ', 'آ' );
		     writeButton('ا', 'ا' );	     
	     document.writeln('</tr><tr>');
		    writeButton('گ', 'گ');
		     writeButton('ک', 'ک' );
		    writeButton('ق', 'ق' );
		     writeButton('ف', 'ف' );
		    writeButton('غ', 'غ' );
		     writeButton('ع', 'ع' );
		    writeButton('ظ', 'ظ' );
		     writeButton('ط', 'ط' );
		     writeButton('ض', 'ض' );
		    writeButton('ص', 'ص' );
		     writeButton('ش', 'ش' );
		     writeButton('س', 'س');
		    writeButton('ژ', 'ژ' );
	     writeButton('ز', 'ز');
	     writeButton('ڑ', 'ڑ');
	    document.writeln('</tr>');
	    document.writeln('<tr>');
	    document.writeln('<TD >&nbsp;</TD >');
		    writeButton('؟', '؟');
		    writeButton('۔', '۔');
		     writeButton('ے', 'ے');
		     writeButton('ی', 'ی');
		    writeButton('ئ', 'ئ');
		     writeButton('ء', 'ء');
		     writeButton('ھ', 'ھ');
		    writeButton('ہ', 'ہ');
		     writeButton('ؤ', 'ؤ');
		     writeButton('و', 'و');
		    writeButton('ں', 'ں');
		    writeButton('ن', 'ن');
		     writeButton('م', 'م');
		     writeButton('ل', 'ل');
	     document.writeln('</tr>');	
	     document.writeln('<tr>');		 
	     //last row for the diacritics
	     document.writeln('<td width="100%" colspan="15">');
	     document.writeln('<table align=right style="border: 1px solid #D3D3D3;" colspan="15">'); 
	    document.writeln('<tr>');
	 	    //writeButton2('  \"  ',String.fromCharCode(0x0022));
		    writeButton2( 'کوما',String.fromCharCode(0x060C));
		     writeButton2( 'تشدید' ,String.fromCharCode(0x0651));
		     writeButton2( 'کھڑی زبر' , String.fromCharCode(0x0670));
		    writeButton2( 'درمیانی حمزہ' ,String.fromCharCode(0x0626));
		     writeButton2( 'دو زیر' ,String.fromCharCode(0x064D));
		     writeButton2( 'دو زبر' ,String.fromCharCode(0x064B));
		    writeButton2( ' پیش ' ,String.fromCharCode(0x064F));
		     writeButton2( 'زبر' , String.fromCharCode(0x064E));
		     writeButton2( 'زیر' ,String.fromCharCode(0x0650));
	    document.writeln('</tr>');   
	    document.writeln('</table>');
	    //last row
	     document.writeln('</td>');
         	     document.writeln('</tr>');
	     document.writeln('</table>');
	     document.writeln('</span>');
	
	
    }


})(jQuery);