/* 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
*/

var niftyOk=(document.getElementById && document.createElement && Array.prototype.push);
var niftyCss=false;

String.prototype.find=function(what){
return(this.indexOf(what)>=0 ? true : false);
};

function createEl(x){return(document.createElement(x));}

function addCSS(){
if (!niftyCss) {
niftyCss=true;
var l=createEl("link");
l.setAttribute("type","text/css");
l.setAttribute("rel","stylesheet");
l.setAttribute("href","css/niftyCorners.css");
l.setAttribute("media","screen");
document.getElementsByTagName("head")[0].appendChild(l);
}
}

var oldonload=window.onload;
if(typeof(niftyLoad)!='function') { niftyLoad=function(){}; }
if(typeof(oldonload)=='function') {
    window.onload=function(){oldonload();addCSS();niftyLoad();}; }
else { window.onload=function(){addCSS();niftyLoad();}; }

function fixIE(el){
if(el.currentStyle!=null && el.currentStyle.hasLayout!=null && el.currentStyle.hasLayout==false) {
    el.style.display="inline-block"; }
}

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

function getBk(x){
var c=getStyleProp(x,"backgroundColor");
if(c===null || c=="transparent" || c.find("rgba(0, 0, 0, 0)")) {
    return("transparent"); }
if(c.find("rgb")) { c=rgb2hex(c); }
return(c);
}

function mix(c1,c2){
var i,step1,step2,x,y,r=new Array(3);
if(c1.length==4) { step1=1;
} else { step1=2; }
if(c2.length==4) { step2=1;
} else { step2=2; }
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]);
}

function addTop(el,side,options){
var d=createEl("b"),lim=4,border="",p,i,btype="r",bk,color;
d.style.marginLeft="-"+getPadding(el,"Left")+"px";
d.style.marginRight="-"+getPadding(el,"Right")+"px";
if(options.find("alias") || (color=getBk(el))=="transparent"){
    color="transparent";bk="transparent"; border=getParentBk(el);btype="t";
    }
else{
    bk=getParentBk(el); border=mix(color,bk);
    }
d.style.background=bk;
d.className="niftycorners";
p=getPadding(el,"Top");
if(options.find("small")){
    d.style.marginBottom=(p-2)+"px";
    btype+="s"; lim=2;
    }
else if(options.find("big")){
    d.style.marginBottom=(p-10)+"px";
    btype+="b"; lim=8;
    }
else { d.style.marginBottom=(p-5)+"px"; }
for(i=1;i<=lim;++i) {
    d.appendChild(createStrip(i,side,color,border,btype)); }
el.style.paddingTop="0";
//$debug(color + " " + border + " " + bk + " -- \r\n");
el.insertBefore(d,el.firstChild);
}

function addBottom(el,side,options){
var d=createEl("b"),lim=4,border="",p,i,btype="r",bk,color;
d.style.marginLeft="-"+getPadding(el,"Left")+"px";
d.style.marginRight="-"+getPadding(el,"Right")+"px";
if(options.find("alias") || (color=getBk(el))=="transparent"){
    color="transparent";bk="transparent"; border=getParentBk(el);btype="t";
    }
else{
    bk=getParentBk(el); border=mix(color,bk);
    }
d.style.background=bk;
d.className="niftycorners";
p=getPadding(el,"Bottom");
if(options.find("small")){
    d.style.marginTop=(p-2)+"px";
    btype+="s"; lim=2;
    }
else if(options.find("big")){
    d.style.marginTop=(p-10)+"px";
    btype+="b"; lim=8;
    }
else { d.style.marginTop=(p-5)+"px"; }
for(i=lim;i>0;i--) {
    d.appendChild(createStrip(i,side,color,border,btype)); }
el.style.paddingBottom=0;
el.appendChild(d);
}

function toRounded(selector,options){
var i,top="",bottom="",v=new Array();
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.find("tl")){
        top="both";
        if(!options.find("tr")) { top="left"; }
        }
    else if(options.find("tr")) { top="right"; }
    if(options.find("bl")){
        bottom="both";
        if(!options.find("br")) { bottom="left"; }
        }
    else if(options.find("br")) { bottom="right"; }
    }
if(top==="" && bottom==="" && !options.find("none")){top="both";bottom="both";}
v=getElementsBySelector(selector);
for(i=0;i<v.length;i++){
    fixIE(v[i]);
    if(top!=="") { addTop(v[i],top,options); }
    if(bottom!=="") { addBottom(v[i],bottom,options); }
    }
}

function Nifty(selector,options){
//$debug(selector);
if(niftyOk===false) { return; }
if(niftyCss===false) { addCSS(); }
var i,v=selector.split(","),h=0;
if (options==null) { options=""; }
if (options.find("fixed-height")) {
    h=getElementsBySelector(v[0])[0].offsetHeight; }
for(i=0;i<v.length;i++) {
    toRounded(v[i],options); }
if(options.find("height")) { sameHeight(selector,h); }
}

function sameHeight(selector,maxh){
	//alert(maxh);
var i,v=selector.split(","),t,j,els=[],gap;
for(i=0;i<v.length;i++){
    t=getElementsBySelector(v[i]);
    els=els.concat(t);
    }
$('blah').innerHTML += maxh + " - ";
for(i=0;i<els.length;i++){
	$('blah').innerHTML += maxh + "," + els[i].offsetHeight + " - ";
    if(els[i].offsetHeight>maxh) { maxh=els[i].offsetHeight; }
    els[i].style.height="auto";
	$('blah').innerHTML += maxh + "," + els[i].offsetHeight + " - ";
    }
for(i=0;i<els.length;i++){
    gap=maxh-els[i].offsetHeight;
    if(gap>0){
		//alert(gap);
		
		$('blah').innerHTML += "gap: " + gap + " ";
        t = createEl("b");t.className="niftyfill";t.style.height=gap+"px";
        var nc = els[i].lastChild;
        if(nc.className=="niftycorners") {
            els[i].insertBefore(t,nc);
        } else { els[i].appendChild(t); }
        }
    }
$('blah').innerHTML += "<br />";
for(i=0;i<els.length;i++) {
	$('blah').innerHTML += els[i].offsetHeight + " ";
}
}

function getElementsBySelector(selector){
var v,i,j,selid="",selclass="",tag=selector,tag2="",v2,k,f,a,s=[],objlist=[],c;
if(selector.find("#")){ //id selector like "tag#id"
    if(selector.find(" ")){  //descendant selector like "tag#id tag"
        s=selector.split(" ");
        var fs=s[0].split("#");
        if(fs.length==1) { return(objlist); }
        f=document.getElementById(fs[1]);
        if(f){
            v=f.getElementsByTagName(s[1]);
            for(i=0;i<v.length;i++) { objlist.push(v[i]); }
            }
        return(objlist);
        }
    else{
        s=selector.split("#");
        tag=s[0];
        selid=s[1];
        if(selid!=""){
            f=document.getElementById(selid);
            if(f) { objlist.push(f); }
            return(objlist);
            }
        }
    }
if(selector.find(".")){      //class selector like "tag.class"
    s=selector.split(".");
    tag=s[0];
    selclass=s[1];
    if(selclass.find(" ")){   //descendant selector like tag1.classname tag2
        s=selclass.split(" ");
        selclass=s[0];
        tag2=s[1];
        }
    }
v=document.getElementsByTagName(tag);  // tag selector like "tag"
if(selclass==""){
    for(i=0;i<v.length;i++) { objlist.push(v[i]); }
    return(objlist);
    }
for(i=0;i<v.length;i++){
    c=v[i].className.split(" ");
    for(j=0;j<c.length;j++){
        if(c[j]==selclass){
            if(tag2=="") { objlist.push(v[i]);
            } else {
                v2=v[i].getElementsByTagName(tag2);
                for(k=0;k<v2.length;k++) { objlist.push(v2[k]); }
                }
            }
        }
    }
return(objlist);
}

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

function rgb2hex(value){
var hex="",v,h,i;
var regexp=/([0-9]+)[, ]+([0-9]+)[, ]+([0-9]+)/;
h=regexp.exec(value);
for(i=1;i<4;i++){
    v=parseInt(h[i],0).toString(16);
    if(v.length==1) { hex+="0"+v;
    } else { hex+=v; }
    }
return("#"+hex);
}

function getPadding(x,side){
var p=getStyleProp(x,"padding"+side);
if(p===null || !p.find("px")) { return(0); }
return(parseInt(p,0));
}

function getStyleProp(x,prop){
if(x.currentStyle) {
    return(x.currentStyle[prop]); }
if(document.defaultView.getComputedStyle) {
    return(document.defaultView.getComputedStyle(x,'')[prop]); }
return(null);
}