var detail = 50, strhex = "0123456789abcdef", i, isMouseDown = false, isMouseOver = false;

var colors = new Array(
	"#000000","#000033","#000066","#000099","#0000cc","#0000ff","#330000","#330033",
	"#330066","#330099","#3300cc","#3300ff","#660000","#660033","#660066","#660099",
	"#6600cc","#6600ff","#990000","#990033","#990066","#990099","#9900cc","#9900ff",
	"#cc0000","#cc0033","#cc0066","#cc0099","#cc00cc","#cc00ff","#ff0000","#ff0033",
	"#ff0066","#ff0099","#ff00cc","#ff00ff","#003300","#003333","#003366","#003399",
	"#0033cc","#0033ff","#333300","#333333","#333366","#333399","#3333cc","#3333ff",
	"#663300","#663333","#663366","#663399","#6633cc","#6633ff","#993300","#993333",
	"#993366","#993399","#9933cc","#9933ff","#cc3300","#cc3333","#cc3366","#cc3399",
	"#cc33cc","#cc33ff","#ff3300","#ff3333","#ff3366","#ff3399","#ff33cc","#ff33ff",
	"#006600","#006633","#006666","#006699","#0066cc","#0066ff","#336600","#336633",
	"#336666","#336699","#3366cc","#3366ff","#666600","#666633","#666666","#666699",
	"#6666cc","#6666ff","#996600","#996633","#996666","#996699","#9966cc","#9966ff",
	"#cc6600","#cc6633","#cc6666","#cc6699","#cc66cc","#cc66ff","#ff6600","#ff6633",
	"#ff6666","#ff6699","#ff66cc","#ff66ff","#009900","#009933","#009966","#009999",
	"#0099cc","#0099ff","#339900","#339933","#339966","#339999","#3399cc","#3399ff",
	"#669900","#669933","#669966","#669999","#6699cc","#6699ff","#999900","#999933",
	"#999966","#999999","#9999cc","#9999ff","#cc9900","#cc9933","#cc9966","#cc9999",
	"#cc99cc","#cc99ff","#ff9900","#ff9933","#ff9966","#ff9999","#ff99cc","#ff99ff",
	"#00cc00","#00cc33","#00cc66","#00cc99","#00cccc","#00ccff","#33cc00","#33cc33",
	"#33cc66","#33cc99","#33cccc","#33ccff","#66cc00","#66cc33","#66cc66","#66cc99",
	"#66cccc","#66ccff","#99cc00","#99cc33","#99cc66","#99cc99","#99cccc","#99ccff",
	"#cccc00","#cccc33","#cccc66","#cccc99","#cccccc","#ccccff","#ffcc00","#ffcc33",
	"#ffcc66","#ffcc99","#ffcccc","#ffccff","#00ff00","#00ff33","#00ff66","#00ff99",
	"#00ffcc","#00ffff","#33ff00","#33ff33","#33ff66","#33ff99","#33ffcc","#33ffff",
	"#66ff00","#66ff33","#66ff66","#66ff99","#66ffcc","#66ffff","#99ff00","#99ff33",
	"#99ff66","#99ff99","#99ffcc","#99ffff","#ccff00","#ccff33","#ccff66","#ccff99",
	"#ccffcc","#ccffff","#ffff00","#ffff33","#ffff66","#ffff99","#ffffcc","#ffffff"
);

function init( selectedColor )
{
	var inputColor = convertRGBToHex( selectedColor );

	generatePicker();

	if (inputColor)
  {
		changeFinalColor(inputColor);

		col = convertHexToRGB(inputColor);

		if (col)
			updateLight(col.r, col.g, col.b);
	}
}

function insertAction() {
	var color = document.getElementById("color").value;

	tinyMCEPopup.execCommand(tinyMCE.getWindowArg('command'), false, color);
	tinyMCEPopup.close();
}

function showColor(color, name) {
	if (name)
		document.getElementById("colorname").innerHTML = name;

	document.getElementById("preview").style.backgroundColor = color;
	//document.getElementById("color").value = color;
}

function convertRGBToHex(col) {
	var re = new RegExp("rgb\\s*\\(\\s*([0-9]+).*,\\s*([0-9]+).*,\\s*([0-9]+).*\\)", "gi");

	if (!col)
		return col;

	var rgb = col.replace(re, "$1,$2,$3").split(',');
	if (rgb.length == 3) {
		r = parseInt(rgb[0]).toString(16);
		g = parseInt(rgb[1]).toString(16);
		b = parseInt(rgb[2]).toString(16);

		r = r.length == 1 ? '0' + r : r;
		g = g.length == 1 ? '0' + g : g;
		b = b.length == 1 ? '0' + b : b;

		return "#" + r + g + b;
	}

	return col;
}

function convertHexToRGB(col) {
	if (col.indexOf('#') != -1) {
		col = col.replace(new RegExp('[^0-9A-F]', 'gi'), '');

		r = parseInt(col.substring(0, 2), 16);
		g = parseInt(col.substring(2, 4), 16);
		b = parseInt(col.substring(4, 6), 16);

		return {r : r, g : g, b : b};
	}

	return null;
}

function generatePicker() {
	var el = document.getElementById('light'), h = '', i;

	for (i = 0; i < detail; i++){
		h += '<div id="gs'+i+'" style="background-color:#000000; width:15px; height:3px; border-style:none; border-width:0px;"'
		+ ' onclick="changeFinalColor(this.style.backgroundColor)"'
		+ ' onmousedown="isMouseDown = true; return false;"'
		+ ' onmouseup="isMouseDown = false;"'
		+ ' onmousemove="if (isMouseDown && isMouseOver) changeFinalColor(this.style.backgroundColor); return false;"'
		+ ' onmouseover="isMouseOver = true;"'
		+ ' onmouseout="isMouseOver = false;"'
		+ '></div>';
	}

	el.innerHTML = h;
}

function generateWebColors() {
	var el = document.getElementById('webcolors'), h = '', i;

	if (el.className == 'generated')
		return;

	h += '<table border="0" cellspacing="1" cellpadding="0">'
		+ '<tr>';

	for (i=0; i<colors.length; i++) {
		h += '<td bgcolor="' + colors[i] + '">'
			+ '<a href="javascript:selectColor();" onfocus="showColor(\'' + colors[i] +  '\');" onmouseover="showColor(\'' + colors[i] +  '\');">'
			+ '<img border="0" src="images/spacer.gif" width="10" height="10" title="' + colors[i] +  '" alt="' + colors[i] +  '" /></a></td>';
		if ((i+1) % 18 == 0)
			h += '</tr><tr>';
	}

	h += '</table>';

	el.innerHTML = h;
	el.className = 'generated';
}

function generateNamedColors() {
	var el = document.getElementById('namedcolors'), h = '', n, v, i = 0;

	if (el.className == 'generated')
		return;

	for (n in named) {
		v = named[n];
		h += '<a href="javascript:selectColor();" onmouseover="showColor(\'' + n +  '\',\'' + v + '\');" style="background-color: ' + n + '"><!-- IE --></a>'
	}

	el.innerHTML = h;
	el.className = 'generated';
}

function selectColor() {
	var color = document.getElementById("color").value;

	if(window.opener)
		window.opener.tinyMCE.execInstanceCommand(tinyMCE.getWindowArg('editor_id'),tinyMCE.getWindowArg('command'),false,color);

	window.close();
}

function dechex(n) {
	return strhex.charAt(Math.floor(n / 16)) + strhex.charAt(n % 16);
}

function computeColor(e)
{
	var x, y, partWidth, partDetail, imHeight, r, g, b, coef, i, finalCoef, finalR, finalG, finalB;

	x = e.offsetX ? e.offsetX : (e.target ? e.clientX - e.target.x : 0);
	y = e.offsetY ? e.offsetY : (e.target ? e.clientY - e.target.y : 0);
	
	if( !document.all )
	 x -= 159;

	partWidth = document.getElementById('colorpicker').width / 6;
	partDetail = detail / 2;
	imHeight = document.getElementById('colorpicker').height;

	r = (x >= 0)*(x < partWidth)*255 + (x >= partWidth)*(x < 2*partWidth)*(2*255 - x * 255 / partWidth) + (x >= 4*partWidth)*(x < 5*partWidth)*(-4*255 + x * 255 / partWidth) + (x >= 5*partWidth)*(x < 6*partWidth)*255;
	g = (x >= 0)*(x < partWidth)*(x * 255 / partWidth) + (x >= partWidth)*(x < 3*partWidth)*255	+ (x >= 3*partWidth)*(x < 4*partWidth)*(4*255 - x * 255 / partWidth);
	b = (x >= 2*partWidth)*(x < 3*partWidth)*(-2*255 + x * 255 / partWidth) + (x >= 3*partWidth)*(x < 5*partWidth)*255 + (x >= 5*partWidth)*(x < 6*partWidth)*(6*255 - x * 255 / partWidth);

	coef = (imHeight - y) / imHeight;
	r = 128 + (r - 128) * coef;
	g = 128 + (g - 128) * coef;
	b = 128 + (b - 128) * coef;

	changeFinalColor('#' + dechex(r) + dechex(g) + dechex(b));
	updateLight(r, g, b);
}

function updateLight(r, g, b) {
	var i, partDetail = detail / 2, finalCoef, finalR, finalG, finalB, color;

	for (i=0; i<detail; i++) {
		if ((i>=0) && (i<partDetail)) {
			finalCoef = i / partDetail;
			finalR = dechex(255 - (255 - r) * finalCoef);
			finalG = dechex(255 - (255 - g) * finalCoef);
			finalB = dechex(255 - (255 - b) * finalCoef);
		} else {
			finalCoef = 2 - i / partDetail;
			finalR = dechex(r * finalCoef);
			finalG = dechex(g * finalCoef);
			finalB = dechex(b * finalCoef);
		}

		color = finalR + finalG + finalB;

		document.getElementById('gs' + i).style.backgroundColor = '#'+color;
	}
}

function changeFinalColor(color) {
	if (color.indexOf('#') == -1)
		color = convertRGBToHex(color);

	document.getElementById('preview').style.backgroundColor = color;
	document.getElementById('color').value = color;
}

window.focus();