
// derived from tinymce color_picker.js


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

var colors = [
	"#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"
];

var named = {
	'#F0F8FF':'Alice Blue','#FAEBD7':'Antique White','#00FFFF':'Aqua','#7FFFD4':'Aquamarine','#F0FFFF':'Azure','#F5F5DC':'Beige',
	'#FFE4C4':'Bisque','#000000':'Black','#FFEBCD':'Blanched Almond','#0000FF':'Blue','#8A2BE2':'Blue Violet','#A52A2A':'Brown',
	'#DEB887':'Burly Wood','#5F9EA0':'Cadet Blue','#7FFF00':'Chartreuse','#D2691E':'Chocolate','#FF7F50':'Coral','#6495ED':'Cornflower Blue',
	'#FFF8DC':'Cornsilk','#DC143C':'Crimson','#00FFFF':'Cyan','#00008B':'Dark Blue','#008B8B':'Dark Cyan','#B8860B':'Dark Golden Rod',
	'#A9A9A9':'Dark Gray','#A9A9A9':'Dark Grey','#006400':'Dark Green','#BDB76B':'Dark Khaki','#8B008B':'Dark Magenta','#556B2F':'Dark Olive Green',
	'#FF8C00':'Darkorange','#9932CC':'Dark Orchid','#8B0000':'Dark Red','#E9967A':'Dark Salmon','#8FBC8F':'Dark Sea Green','#483D8B':'Dark Slate Blue',
	'#2F4F4F':'Dark Slate Gray','#2F4F4F':'Dark Slate Grey','#00CED1':'Dark Turquoise','#9400D3':'Dark Violet','#FF1493':'Deep Pink','#00BFFF':'Deep Sky Blue',
	'#696969':'Dim Gray','#696969':'Dim Grey','#1E90FF':'Dodger Blue','#B22222':'Fire Brick','#FFFAF0':'Floral White','#228B22':'Forest Green',
	'#FF00FF':'Fuchsia','#DCDCDC':'Gainsboro','#F8F8FF':'Ghost White','#FFD700':'Gold','#DAA520':'Golden Rod','#808080':'Gray','#808080':'Grey',
	'#008000':'Green','#ADFF2F':'Green Yellow','#F0FFF0':'Honey Dew','#FF69B4':'Hot Pink','#CD5C5C':'Indian Red','#4B0082':'Indigo','#FFFFF0':'Ivory',
	'#F0E68C':'Khaki','#E6E6FA':'Lavender','#FFF0F5':'Lavender Blush','#7CFC00':'Lawn Green','#FFFACD':'Lemon Chiffon','#ADD8E6':'Light Blue',
	'#F08080':'Light Coral','#E0FFFF':'Light Cyan','#FAFAD2':'Light Golden Rod Yellow','#D3D3D3':'Light Gray','#D3D3D3':'Light Grey','#90EE90':'Light Green',
	'#FFB6C1':'Light Pink','#FFA07A':'Light Salmon','#20B2AA':'Light Sea Green','#87CEFA':'Light Sky Blue','#778899':'Light Slate Gray','#778899':'Light Slate Grey',
	'#B0C4DE':'Light Steel Blue','#FFFFE0':'Light Yellow','#00FF00':'Lime','#32CD32':'Lime Green','#FAF0E6':'Linen','#FF00FF':'Magenta','#800000':'Maroon',
	'#66CDAA':'Medium Aqua Marine','#0000CD':'Medium Blue','#BA55D3':'Medium Orchid','#9370D8':'Medium Purple','#3CB371':'Medium Sea Green','#7B68EE':'Medium Slate Blue',
	'#00FA9A':'Medium Spring Green','#48D1CC':'Medium Turquoise','#C71585':'Medium Violet Red','#191970':'Midnight Blue','#F5FFFA':'Mint Cream','#FFE4E1':'Misty Rose','#FFE4B5':'Moccasin',
	'#FFDEAD':'Navajo White','#000080':'Navy','#FDF5E6':'Old Lace','#808000':'Olive','#6B8E23':'Olive Drab','#FFA500':'Orange','#FF4500':'Orange Red','#DA70D6':'Orchid',
	'#EEE8AA':'Pale Golden Rod','#98FB98':'Pale Green','#AFEEEE':'Pale Turquoise','#D87093':'Pale Violet Red','#FFEFD5':'Papaya Whip','#FFDAB9':'Peach Puff',
	'#CD853F':'Peru','#FFC0CB':'Pink','#DDA0DD':'Plum','#B0E0E6':'Powder Blue','#800080':'Purple','#FF0000':'Red','#BC8F8F':'Rosy Brown','#4169E1':'Royal Blue',
	'#8B4513':'Saddle Brown','#FA8072':'Salmon','#F4A460':'Sandy Brown','#2E8B57':'Sea Green','#FFF5EE':'Sea Shell','#A0522D':'Sienna','#C0C0C0':'Silver',
	'#87CEEB':'Sky Blue','#6A5ACD':'Slate Blue','#708090':'Slate Gray','#708090':'Slate Grey','#FFFAFA':'Snow','#00FF7F':'Spring Green',
	'#4682B4':'Steel Blue','#D2B48C':'Tan','#008080':'Teal','#D8BFD8':'Thistle','#FF6347':'Tomato','#40E0D0':'Turquoise','#EE82EE':'Violet',
	'#F5DEB3':'Wheat','#FFFFFF':'White','#F5F5F5':'White Smoke','#FFFF00':'Yellow','#9ACD32':'Yellow Green', '#FF227A':'Hot Pink'
};

var namedLookup = {};

function init() {
	var inputColor = convertRGBToHex($("#color").val()), key, value;


	generatePicker();
	generateWebColors();
	generateNamedColors();

	if (inputColor) {
		changeFinalColor(inputColor);

		col = convertHexToRGB(inputColor);

		if (col)
			updateLight(col.r, col.g, col.b);
	}
	
	for (key in named) {
		value = named[key];
		namedLookup[value.replace(/\s+/, '').toLowerCase()] = key.replace(/#/, '').toLowerCase();
	}
}


function toHexColor(color) {
	var matches, red, green, blue, toInt = parseInt;

	function hex(value) {
		value = parseInt(value).toString(16);

		return value.length > 1 ? value : '0' + value; // Padd with leading zero
	};

	color = color.replace(/[\s#]+/g, '').toLowerCase();
	color = namedLookup[color] || color;
	matches = /^rgb\((\d{1,3}),(\d{1,3}),(\d{1,3})\)|([a-f0-9]{2})([a-f0-9]{2})([a-f0-9]{2})|([a-f0-9])([a-f0-9])([a-f0-9])$/.exec(color);

	if (matches) {
		if (matches[1]) {
			red = toInt(matches[1]);
			green = toInt(matches[2]);
			blue = toInt(matches[3]);
		} else if (matches[4]) {
			red = toInt(matches[4], 16);
			green = toInt(matches[5], 16);
			blue = toInt(matches[6], 16);
		} else if (matches[7]) {
			red = toInt(matches[7] + matches[7], 16);
			green = toInt(matches[8] + matches[8], 16);
			blue = toInt(matches[9] + matches[9], 16);
		}

		return '#' + hex(red) + hex(green) + hex(blue);
	}

	return '';
}


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

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

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;

	// TODO: VoiceOver doesn't seem to support legend as a label referenced by labelledby.
	h += '<div role="listbox" aria-labelledby="webcolors_title" tabindex="0"><table role="presentation" border="0" cellspacing="1" cellpadding="0">'
		+ '<tr>';

	for (i=0; i<colors.length; i++) {
		h += '<td bgcolor="' + colors[i] + '" width="10" height="10">'
			+ '<a href="javascript:;" role="option" onclick="taigachat.changeColor(); $(this).parents(\'.xenOverlay\').data(\'overlay\').close(); return false;" class="OverlayCloser" tabindex="-1" aria-labelledby="web_colors_' + i + '" onfocus="showColor(\'' + colors[i] + '\');" onmouseover="showColor(\'' + colors[i] + '\');" style="display:block;width:10px;height:10px;overflow:hidden;">';
		//if (tinyMCEPopup.editor.forcedHighContrastMode) {
			//h += '<canvas class="mceColorSwatch" height="10" width="10" data-color="' + colors[i] + '"></canvas>';
		//}
		h += '<span class="mceVoiceLabel" style="display:none;" id="web_colors_' + i + '">' + colors[i].toUpperCase() + '</span>';
		h += '</a></td>';
		if ((i+1) % 18 == 0)
			h += '</tr><tr>';
	}

	h += '</table></div>';

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

	paintCanvas(el);
}

function paintCanvas(el) {
	$(el).contents().find(('canvas.mceColorSwatch', el)).each(function() {
		var canvas = this;
		var context;
		if (canvas.getContext && (context = canvas.getContext("2d"))) {
			context.fillStyle = canvas.getAttribute('data-color');
			context.fillRect(0, 0, 10, 10);
		}
	});
}
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:;" role="option" onclick="taigachat.changeColor(); $(this).parents(\'.xenOverlay\').data(\'overlay\').close(); return false;" tabindex="-1" aria-labelledby="named_colors_' + i + '" onfocus="showColor(\'' + n + '\',\'' + v + '\');" onmouseover="showColor(\'' + n + '\',\'' + v + '\');" style="background-color: ' + n + '">';
		//if (tinyMCEPopup.editor.forcedHighContrastMode) {
			//h += '<canvas class="mceColorSwatch" height="10" width="10" data-color="' + colors[i] + '"></canvas>';
		//}
		h += '<span class="mceVoiceLabel" style="display:none;" id="named_colors_' + i + '">' + v + '</span>';
		h += '</a>';
		i++;
	}

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

	paintCanvas(el);
	//enableKeyboardNavigation(el);
}


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, pos = {};
	var offset = $(e.target).offset();
	pos.x = offset.left - $(window).scrollLeft();
	pos.y = offset.top - $(window).scrollTop();

	x = e.offsetX ? e.offsetX : (e.target ? e.clientX - pos.x : 0);
	y = e.offsetY ? e.offsetY : (e.target ? e.clientY - pos.y : 0);
	
	partWidth = document.getElementById('colors').width / 6;
	partDetail = detail / 2;
	imHeight = document.getElementById('colors').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;

		setCol('gs' + i, '#'+color);
	}
}

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

	setCol('preview', color);
	document.getElementById('color').value = color;
}

function setCol(e, c) {
	try {
		document.getElementById(e).style.backgroundColor = c;
	} catch (ex) {
		// Ignore IE warning
	}
}


var isMouseDown = false;
var isMouseOver = false;

var tccLoadDelay;
function finalLoad(){
	if(document.getElementById('light')){
		clearInterval(tccLoadDelay);
		
		init();
		
		$("#colors").click(function(event){
			computeColor(event);
		}).mousedown(function(){
			isMouseDown = true; 
			return false;
		}).mouseup(function(){
			isMouseDown = false;
		}).mousemove(function(event){
			if(isMouseDown && isMouseOver)
				computeColor(event); 
			return false;
		}).mouseover(function(){
			isMouseOver=true;
		}).mouseout(function(){
			isMouseOver=false;
		});
		
		$("#colorpicker > form").bind('AutoValidationComplete', function(e){
			taigachat.changeColor();
			$(this).parents('.xenOverlay').data('overlay').close();
			e.preventDefault();
			return true;
		});
		
	}
}

