/*
Copyright Scand LLC http://www.scbr.com
To use this component please contact info@scbr.com to obtain license

*/ 

document.write("<link rel='stylesheet' type='text/css' href='"+_css_prefix+"dhtmlXGrid_calck.css'></link>");
 
function eXcell_calck(cell){
 try{
 this.cell = cell;
 this.grid = this.cell.parentNode.grid;
}catch(er){}
 this.edit = function(){
 this.val = this.getValue();

 var arPos = this.grid.getPosition(this.cell);
 this.obj = new calcX(arPos[0],arPos[1]+this.cell.offsetHeight,this,this.val);

}
 this.getValue = function(){
 
 return this.grid._aplNFb(this.cell.innerHTML.toString()._dhx_trim(),this.cell._cellIndex);
}
 this.detach = function(){
 if(this.obj){
 this.setValue(this.obj.inputZone.value);
 this.obj.removeSelf();
}
 this.obj=null;
 return this.val!=this.getValue();
}
}
eXcell_calck.prototype = new eXcell;
eXcell_calck.prototype.setValue = function(val){
 if(!val || val.toString()._dhx_trim()=="")
 val="0"
 this.setCValue(this.grid._aplNF(val,this.cell._cellIndex),val);
}

function calcX(left,top,onReturnSub,val){
 this.top=top||0;
 this.left=left||0;
 this.onReturnSub=onReturnSub||null;

 this.operandA=0;
 this.operandB=0;
 this.operatorA="";
 this.state=0;
 this.dotState=0;


this.calckGo=function(){
 return(eval(this.operandA+"*1"+this.operatorA+this.operandB+"*1"));
};

this.isNumeric=function(str){
 return((str.search(/[^1234567890]/gi)==-1)?(true):(false));
};
this.isOperation=function(str){
 return((str.search(/[^\+\*\-\/]/gi)==-1)?(true):(false));
}
 this.onCalcKey=function(e)
{
 that=this.calk;
 var z=this.innerHTML;
 var rZone=that.inputZone;
 if(((that.state==0)||(that.state==2))&&(that.isNumeric(z)))if(rZone.value!="0")rZone.value+=z;else rZone.value=z;
 if((((that.state==0)||(that.state==2))&&(z=='.'))&&(that.dotState==0)){that.dotState=1;rZone.value+=z;}
 if((z=="C")){rZone.value=0;that.dotState=0;that.state=0;}
 if((that.state==0)&&(that.isOperation(z))){that.operatorA=z;that.operandA=rZone.value;that.state=1;}
 if((that.state==2)&&(that.isOperation(z))){that.operandB=rZone.value;rZone.value=that.calckGo();that.operatorA=z;that.operandA=rZone.value;that.state=1;}
 if((that.state==2)&&(z=="=")){that.operandB=rZone.value;rZone.value=that.calckGo();that.operatorA=z;that.operandA=rZone.value;that.state=3;}
 if((that.state==1)&&(that.isNumeric(z))){rZone.value=z;that.state=2;that.dotState=0}
 if((that.state==3)&&(that.isNumeric(z))){rZone.value=z;that.state=0;}
 if((that.state==3)&&(that.isOperation(z))){that.operatorA=z;that.operandA=rZone.value;that.state=1;}
 if(z=="e"){rZone.value=Math.E;if(that.state==1)that.state=2;that.dotState=0}
 if(z=="p"){rZone.value=Math.PI;if(that.state==1)that.state=2;that.dotState=0}
 if(z=="Off")that.topNod.removeNode(true);

 if(e||event)(e||event).cancelBubble=true;
}
 this.sendResult=function(){
 that=this.calk;
 if(that.state==2){
 var rZone=that.inputZone;
 that.operandB=rZone.value;
 rZone.value=that.calckGo();
 that.operatorA=z;
 that.operandA=rZone.value;
 that.state=3;}
 var z=that.inputZone.value;

 that.topNod.parentNode.removeChild(that.topNod);
 that.onReturnSub.grid.editStop(1,z);
};
 this.removeSelf=function(){
 if(this.topNod.parentNode)
 this.topNod.parentNode.removeChild(this.topNod);
}
 this.keyDown=function(){this.className="calcPressed";};
 this.keyUp=function(){this.className="calcButton";};
 this.init_table=function(){
 var table=this.topNod.childNodes[0];
 if((!table)||(table.tagName!="TABLE"))return;
 for(i=1;i<table.childNodes[0].childNodes.length;i++)
 for(j=0;j<table.childNodes[0].childNodes[i].childNodes.length;j++)
{
 table.childNodes[0].childNodes[i].childNodes[j].onclick=this.onCalcKey;
 table.childNodes[0].childNodes[i].childNodes[j].onmousedown=this.keyDown;
 table.childNodes[0].childNodes[i].childNodes[j].onmouseout=this.keyUp;
 table.childNodes[0].childNodes[i].childNodes[j].onmouseup=this.keyUp;
 table.childNodes[0].childNodes[i].childNodes[j].calk=this;
}
 this.inputZone=this.topNod.childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0];
 if(this.onReturnSub)
{
 this.topNod.childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[1].onclick=this.sendResult;
 this.topNod.childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[1].calk=this;
}
 else this.topNod.childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[0].childNodes[1].innerHTML="";
}
 this.drawSelf=function(){
 var div=document.createElement("div");
 div.className="calcTable";
 div.style.position="absolute";
 div.style.top=this.top+"px";
 div.style.left=this.left+"px";
 div.innerHTML="<table cellspacing='0' id='calc_01' class='calcTable'><tr><td colspan='4'><table cellpadding='1' cellspacing='0' width='100%'><tr><td width='100%'><input style='width:100%' class='calcInput' value='0' align='right' readonly='true' style='text-align:right'></td><td class='calkSubmit'>=</td></tr></table></td></tr><tr><td class='calcButton' width='25%'>Off</td><td class='calcButton' width='25%'>p</td><td class='calcButton' width='25%'>e</td><td class='calcButton' width='25%'>/</td></tr><tr><td class='calcButton'>7</td><td class='calcButton'>8</td><td class='calcButton'>9</td><td class='calcButton'>*</td></tr><tr><td class='calcButton'>4</td><td class='calcButton'>5</td><td class='calcButton'>6</td><td class='calcButton'>+</td></tr><tr><td class='calcButton'>1</td><td class='calcButton'>2</td><td class='calcButton'>3</td><td class='calcButton'>-</td></tr><tr><td class='calcButton'>0</td><td class='calcButton'>.</td><td class='calcButton'>C</td><td class='calcButton'>=</td></tr></table>";
 document.body.appendChild(div);
 this.topNod=div;
}

 this.drawSelf();
 this.init_table();

 if(val){
 var rZone=this.inputZone;
 rZone.value=val*1;
 this.operandA=val*1;
 this.state=3;
}
 return this;
};