/* Nifty for jQuery is a modified and optimized version of Nifty Corners Cube.
 * The new one has been programmed by Paul Bakaus (paul.bakaus@gmail.com), read below
 * for further copyright information.
 */

/* Nifty Corners Cube - rounded corners with CSS and Javascript
Copyright 2006 Alessandro Fulciniti (a.fulciniti@html.it)

This program 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.

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

jQuery.fn.nifty = function(options){
	if((document.getElementById && document.createElement && Array.prototype.push) == false) return;
	
	options = options || "";
	h = (options.indexOf("fixed-height") >= 0) ? this.offsetHeight : 0;
		
	this.each(function(){ 
		var i,top="",bottom="";
		if(options != ""){
		    options=options.replace("left","tl bl");
		    options=options.replace("right","tr br");
		    options=options.replace("top","tr tl");
		    options=options.replace("bottom","br bl");
		    options=options.replace("transparent","alias");
		    if(options.indexOf("tl") >= 0) { top="both"; if(options.indexOf("tr") == -1) top="left"; } else if(options.indexOf("tr") >= 0) top="right";
		    if(options.indexOf("bl") >= 0) { bottom="both"; if(options.indexOf("br") == -1) bottom="left"; } else if(options.indexOf("br") >= 0) bottom="right";
		}
		if(top=="" && bottom=="" && options.indexOf("none") == -1){top="both";bottom="both";}
		
	    // IE Fix
		if(this.currentStyle!=null && this.currentStyle.hasLayout!=null && this.currentStyle.hasLayout==false)
    		jQuery(this).css("display","inline-block");

	    if(top!="") {
			//add top		
			var d=document.createElement("b"),lim=4,border="",p,i,btype="r",bk,color;
			jQuery(d).css("marginLeft","-"+_niftyGP(this,"Left")+"px");
			jQuery(d).css("marginRight","-"+_niftyGP(this,"Right")+"px");
			if(options.indexOf("alias") >= 0 || (color=_niftyBC(this))=="transparent"){
			    color="transparent";bk="transparent"; border=_niftyPBC(this);btype="t";
			    }
			else{
			    bk=_niftyPBC(this); border=_niftyMix(color,bk);
			    }
			jQuery(d).css("background",bk);
			d.className="niftycorners";
			p=_niftyGP(this,"Top");
			if(options.indexOf("small") >= 0){
			    jQuery(d).css("marginBottom",(p-2)+"px");
			    btype+="s"; lim=2;
			    }
			else if(options.indexOf("big") >= 0){
			    jQuery(d).css("marginBottom",(p-10)+"px");
			    btype+="b"; lim=8;
			    }
			else jQuery(d).css("marginBottom",(p-5)+"px");
			for(i=1;i<=lim;i++)
			    jQuery(d).append(CreateStrip(i,top,color,border,btype));
			jQuery(this).css("paddingTop", "0px");
			jQuery(this).prepend(d);				
		}
	    if(bottom!="") {
			//add bottom
			var d=document.createElement("b"),lim=4,border="",p,i,btype="r",bk,color;
			jQuery(d).css("marginLeft","-"+_niftyGP(this,"Left")+"px");
			jQuery(d).css("marginRight","-"+_niftyGP(this,"Right")+"px");
			if(options.indexOf("alias") >= 0 || (color=_niftyBC(this))=="transparent"){ color="transparent";bk="transparent"; border=_niftyPBC(this);btype="t"; } else { bk=_niftyPBC(this); border=_niftyMix(color,bk); }
			jQuery(d).css("background",bk);
			d.className="niftycorners";
			p=_niftyGP(this,"Bottom");
			if(options.indexOf("small") >= 0){
			    jQuery(d).css("marginTop",(p-2)+"px");
			    btype+="s"; lim=2;
			    }
			else if(options.indexOf("big") >= 0){
			    jQuery(d).css("marginTop",(p-10)+"px");
			    btype+="b"; lim=8;
			    }
			else jQuery(d).css("marginTop",(p-5)+"px");
			for(i=lim;i>0;i--)
			    jQuery(d).append(CreateStrip(i,bottom,color,border,btype));
			jQuery(this).css("paddingBottom", "0");
			jQuery(this).append(d);			
		};
	});
   
	if(options.indexOf("height") >= 0)
	{		
		this.each(function(){
	    	if(this.offsetHeight>h) h=this.offsetHeight;
	    	jQuery(this).css("height", "auto");
	
	    	var gap=h-this.offsetHeight;
	    	if(gap>0)
			{
	        	var t=document.createElement("b");t.className="niftyfill";jQuery(t).css("height",gap+"px");
	        	nc=this.lastChild;
	        	nc.className=="niftycorners" ? this.insertBefore(t,nc) : jQuery(this).append(t);
	    	}		
		});
	}
        return this;
}

function CreateStrip(index,side,color,border,btype){
	var x=document.createElement("b");
	x.className=btype+index;
	jQuery(x).css("backgroundColor", color).css("borderColor", border);
	if(side=="left") jQuery(x).css("borderRightWidth", "0").css("marginRight", "0");
	else if(side=="right") jQuery(x).css("borderLeftWidth", "0").css("marginLeft", "0");
	return(x);
}

function _niftyPBC(x){
	var el=x.parentNode,c;
	while(el.tagName.toUpperCase()!="HTML" && (c=_niftyBC(el))=="transparent")
	    el=el.parentNode;
	if(c=="transparent") c="#FFFFFF";
	return(c);
}

function _niftyBC(x){
	var c=jQuery(x).css("backgroundColor");
	if(c==null || c=="transparent" || c.indexOf("rgba(0, 0, 0, 0)") >= 0) return("transparent");
	if(c.indexOf("rgb") >= 0) {
		var hex="";
		var regexp=/([0-9]+)[, ]+([0-9]+)[, ]+([0-9]+)/;
		var h=regexp.exec(c);
		for(var i=1;i<4;i++){
		    var v=parseInt(h[i]).toString(16);
		    if(v.length==1) hex+="0"+v; else hex+=v;
		}
		c = "#"+hex;	
	}
	return(c);
}

function _niftyGP(x,side){
	var p=jQuery(x).css("padding"+side);
	if(p==null || p.indexOf("px") == -1) return(0);
	return(parseInt(p));
}

function _niftyMix(c1,c2){
	var i,step1,step2,x,y,r=new Array(3);
	c1.length==4 ? step1=1 : step1=2;
	c2.length==4 ? step2=1 : step2=2;
        if (c1 == 'white') c1 = '#ffffff';
        if (c2 == 'white') c2 = '#ffffff';
        if (c1 == 'black') c1 = '#000000';
        if (c2 == 'black') c2 = '#000000';
	for(i=0;i<3;i++){
	    x=parseInt(c1.substr(1+step1*i,step1),16);
	    if(step1==1) x=16*x+x;
	    y=parseInt(c2.substr(1+step2*i,step2),16);
	    if(step2==1) y=16*y+y;
	    r[i]=Math.floor((x*50+y*50)/100);
	    r[i]=r[i].toString(16);
	    if(r[i].length==1) r[i]="0"+r[i];
	}
	return("#"+r[0]+r[1]+r[2]);
}
