/*
	Ajax attachments processor
	rows must contain 6 character length hexidecimal strings for fades to work
*/
var row0 = '#EEEEEE';
var row1 = '#ffffff';
var nlbFadeColor = 'FFFF99';
var nlbFade_hextable = [ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' ]; // used for RGB to Hex and Hex to RGB conversions
var nlbFade_elemTable = new Array( ); // global array to keep track of faded elements
var nlbFade_t = new Array( ); // global array to keep track of fading timers


function Attach(qs,obj) {
	var url = obj.href + '&ajax=true';
	var req;
	
    try  {		
        req=new ActiveXObject("Msxml2.XMLHTTP");
    } catch(e) {
        try {
            req=new ActiveXObject("Microsoft.XMLHTTP");
        } catch(oc) {
            req=null;
        }
    }

    if(!req&&typeof XMLHttpRequest!="undefined") {
        req= new XMLHttpRequest();
	}
	
    if(req!=null) {
		var p = obj.parentNode;
		var a = p.childNodes[0];
		p.removeChild(a);
		var s = document.createElement('span');
		p.appendChild(s);
		setText(s,'Attaching');
		
        req.onreadystatechange = function() {
			if (req.readyState == 4) {
				// only if "OK" 				
				if (req.status == 200) {
					if(req.responseText.indexOf("update=true")>-1) {
						attUpdated(p,qs);				
					} else {
						alert('Unexpected response text');
					}
				} else {
					alert(req.status);
				}
			}
		}
        req.open("GET", url, true);
        req.send(null);
    }
}
function Detach(qs,obj) {
	var url = obj.href + '&ajax=true';
	var req;
	
    try  {		
        req=new ActiveXObject("Msxml2.XMLHTTP");
    } catch(e) {
        try {
            req=new ActiveXObject("Microsoft.XMLHTTP");
        } catch(oc) {
            req=null;
        }
    }

    if(!req&&typeof XMLHttpRequest!="undefined") {
        req= new XMLHttpRequest();
	}
	
    if(req!=null) {
		var p = obj.parentNode;
		var a = p.childNodes[0];
		p.removeChild(a);
		var s = document.createElement('span');
		p.appendChild(s);
		setText(s,'Detaching');
		
        req.onreadystatechange = function() {
			if (req.readyState == 4) {
				// only if "OK" 				
				if (req.status == 200) {
					if(req.responseText.indexOf("update=true")>-1) {
						detUpdated(p,qs);				
					} else {
						alert('Unexpected response text');
					}
				} else {
					alert(req.status);
				}
			}
		}
        req.open("GET", url, true);
        req.send(null);
    }
}


function attUpdated(l,qs) {
	var td = l;
	var tr = l.parentNode;
	
	var tds = tr.getElementsByTagName('td');
	var bgtmp;
	var image = '/admin/assets/gfx/updated.gif';
	
	var a = td.childNodes[0];
	td.removeChild(a);
	var s = document.createElement('span');
	td.appendChild(s);
	setText(s,'Attached');
	
	if (tr.className.indexOf('row0')>-1) {
		bgtmp = row0;
	} else {
		bgtmp = row1;		
	}
	
	for (i=0;i<=(tds.length-1);i++) {
		 NLBfadeBg(tds[i].id,nlbFadeColor,bgtmp,'1000');
	}
}

function detUpdated(l,qs) {
	var td = l;
	var tr = l.parentNode;
	
	var tds = tr.getElementsByTagName('td');
	var bgtmp;
	var image = '/admin/assets/gfx/updated.gif';
	
	var a = td.childNodes[0];
	td.removeChild(a);
	var s = document.createElement('span');
	td.appendChild(s);
	setText(s,'Detached');
	
	if (tr.className.indexOf('row0')>-1) {
		bgtmp = row0;
	} else {
		bgtmp = row1;		
	}
	
	for (i=0;i<=(tds.length-1);i++) {
		 NLBfadeBg(tds[i].id,nlbFadeColor,bgtmp,'1000');
	}
}
function setText(el,str)
{
	if ('string' == typeof el.textContent) {
		 el.textContent = str;
	} else if ('string' == typeof el.innerText) {
		el.innerText = str;
	}
}
function NLBfadeBg( elementId, startBgColor, endBgColor, fadeTime ) {
	var timeBetweenSteps = Math.round( Math.max( fadeTime / 300, 30 ) );
	var nlbFade_elemTableId = nlbFade_elemTable.indexOf( elementId );
	if( nlbFade_elemTableId > -1 ) {
		for( var i = 0; i < nlbFade_t[nlbFade_elemTableId].length; i++ )
			clearTimeout( nlbFade_t[nlbFade_elemTableId][i] );
	} else {
		nlbFade_elemTable.push( elementId );
		nlbFade_elemTableId = nlbFade_elemTable.indexOf( elementId );
	}
	var startBgColorRGB = hexToRGB( startBgColor );
	var endBgColorRGB = hexToRGB( endBgColor );
	var diffRGB = new Array( );
	for( var i = 0; i < 3; i++ )
		diffRGB[i] = endBgColorRGB[i] - startBgColorRGB[i];
	var steps = Math.ceil( fadeTime / timeBetweenSteps );
	var nlbFade_s = new Array( );
	for( var i = 1; i <= steps; i++ ) {
		var changes = new Array( );
		for( var j = 0; j < diffRGB.length; j++ )
			changes[j] = startBgColorRGB[j] + Math.round( ( diffRGB[j] / steps ) * i );
		if( i == steps )
			nlbFade_s[i - 1] = setTimeout( 'document.getElementById("'+elementId+'").style.backgroundColor = "'+endBgColor+'";', timeBetweenSteps*(i-1) );
		else
			nlbFade_s[i - 1] = setTimeout( 'document.getElementById("'+elementId+'").style.backgroundColor = "'+RGBToHex( changes )+'";', timeBetweenSteps*(i-1) );
	}
	nlbFade_t[nlbFade_elemTableId] = nlbFade_s;
}
function hexToRGB( hexVal ) {
	hexVal = hexVal.toUpperCase( );
	if( hexVal.substring( 0, 1 ) == '#' )
		hexVal = hexVal.substring( 1 );
	var hexArray = new Array( );
	var rgbArray = new Array( );
	hexArray[0] = hexVal.substring( 0, 2 );
	hexArray[1] = hexVal.substring( 2, 4 );
	hexArray[2] = hexVal.substring( 4, 6 );
	for( var k = 0; k < hexArray.length; k++ ) {
		var num = hexArray[k];
		var res = 0;
		var j = 0;
		for( var i = num.length - 1; i >= 0; i-- )
			res += parseInt( nlbFade_hextable.indexOf( num.charAt( i ) ) ) * Math.pow( 16, j++ );
		rgbArray[k] = res;
	}
	return rgbArray;
}
function RGBToHex( rgbArray ) {
	var retval = new Array( );
	for( var j = 0; j < rgbArray.length; j++ ) {
		var result = new Array( );
		var val = rgbArray[j];
		var i = 0;
		while( val > 16 ) {
			result[i++] = val%16;
			val = Math.floor( val/16 );
		}
		result[i++] = val%16;
		var out = '';
		for( var k = result.length - 1; k >= 0; k-- )
			out += nlbFade_hextable[result[k]];
		retval[j] = padLeft( out, '0', 2 );
	}
	out = '#';
	for( var i = 0; i < retval.length; i++ )
		out += retval[i];
	return out;
}
if (!Array.prototype.indexOf) {
	Array.prototype.indexOf = function( val, fromIndex ) {
		if( typeof( fromIndex ) != 'number' ) fromIndex = 0;
		for( var index = fromIndex, len = this.length; index < len; index++ )
			if( this[index] == val ) return index;
		return -1;
	}
}
function padLeft( string, character, paddedWidth ) {
	if( string.length >= paddedWidth )
		return string;
	else
	{
		while( string.length < paddedWidth )
			string = character + string;
	}
	return string;
}