// ===================================================================

// Author: Matt Kruse <matt@mattkruse.com>

// WWW: http://www.mattkruse.com/

//

// NOTICE: You may use this code for any purpose, commercial or

// private, without any further permission from the author. You may

// remove this notice from your final code if you wish, however it is

// appreciated by the author if at least my web site address is kept.

//

// You may *NOT* re-distribute this code in any way except through its

// use. That means, you can include it in your product, or your web

// site, or any other form where the code is actually being used. You

// may not put the plain javascript up on your site for download or

// include it in your javascript libraries for download. 

// If you wish to share this code with others, please just point them

// to the URL instead.

// Please DO NOT link directly to my .js files from your site. Copy

// the files to your server and use them there. Thank you.

// ===================================================================



/* 

Last modified: 02/24/2003



DESCRIPTION: This widget is used to select a color, in hexadecimal #RRGGBB 

form. It uses a color "swatch" to display the standard 216-color web-safe 

palette. The user can then click on a color to select it.



COMPATABILITY: See notes in AnchorPosition.js and PopupWindow.js.

Only the latest DHTML-capable browsers will show the color and hex values

at the bottom as your mouse goes over them.



USAGE:

// Create a new ColorPicker object using DHTML popup

var cp = new ColorPicker();



// Create a new ColorPicker object using Window Popup

var cp = new ColorPicker('window');



// Add a link in your page to trigger the popup. For example:

<A HREF="#" onClick="cp.show('pick');return false;" NAME="pick" ID="pick">Pick</A>



// Or use the built-in "select" function to do the dirty work for you:

<A HREF="#" onClick="cp.select(document.forms[0].color,'pick');return false;" NAME="pick" ID="pick">Pick</A>



// If using DHTML popup, write out the required DIV tag near the bottom

// of your page.

<SCRIPT LANGUAGE="JavaScript">cp.writeDiv()</SCRIPT>



// Write the 'pickColor' function that will be called when the user clicks

// a color and do something with the value. This is only required if you

// want to do something other than simply populate a form field, which is 

// what the 'select' function will give you.

function pickColor(color) {

	field.value = color;

	}



NOTES:

1) Requires the functions in AnchorPosition.js and PopupWindow.js



2) Your anchor tag MUST contain both NAME and ID attributes which are the 

   same. For example:

   <A NAME="test" ID="test"> </A>



3) There must be at least a space between <A> </A> for IE5.5 to see the 

   anchor tag correctly. Do not do <A></A> with no space.



4) When a ColorPicker object is created, a handler for 'onmouseup' is

   attached to any event handler you may have already defined. Do NOT define

   an event handler for 'onmouseup' after you define a ColorPicker object or

   the color picker will not hide itself correctly.

*/ 

ColorPicker_targetInput = null;

function ColorPicker_writeDiv() {

	document.writeln("<div id=\"colorPickerDiv\" style=\"position:absolute;visibility:hidden;\"> </div>");

	}



function ColorPicker_show(anchorname) {

	this.showPopup(anchorname);

	}



function ColorPicker_pickColor(color,obj) {

	obj.hidePopup();

	pickColor(color);

	}



// A Default "pickColor" function to accept the color passed back from popup.

// User can over-ride this with their own function.

function pickColor(color) {

	if (ColorPicker_targetInput==null) {

		alert("Target Input is null, which means you either didn't use the 'select' function or you have no defined your own 'pickColor' function to handle the picked color!");

		return;

		}

	ColorPicker_targetInput.value = color;



}



// This function is the easiest way to popup the window, select a color, and

// have the value populate a form field, which is what most people want to do.

function ColorPicker_select(inputobj,linkname) {

	if (inputobj.type!="text" && inputobj.type!="hidden" && inputobj.type!="textarea") { 

		alert("colorpicker.select: Input object passed is not a valid form input object"); 

		window.ColorPicker_targetInput=null;

		return;

		}

	window.ColorPicker_targetInput = inputobj;

	this.show(linkname);

	}

	

// This function runs when you move your mouse over a color block, if you have a newer browser

function ColorPicker_highlightColor(c) {

	var thedoc = (arguments.length>1)?arguments[1]:window.document;

	var d = thedoc.getElementById("colorPickerSelectedColor");

	d.style.backgroundColor = c;

	d = thedoc.getElementById("colorPickerSelectedColorValue");

	d.innerHTML = c;

	}



function ColorPicker() {

	var windowMode = false;

	// Create a new PopupWindow object

	if (arguments.length==0) {

		var divname = "colorPickerDiv";

		}

	else if (arguments[0] == "window") {

		var divname = '';

		windowMode = true;

		}

	else {

		var divname = arguments[0];

		}

	

	if (divname != "") {

		var cp = new PopupWindow(divname);

		}

	else {

		var cp = new PopupWindow();

		cp.setSize(225,250);

		}



	// Object variables

	cp.currentValue = "#FFFFFF";

	

	// Method Mappings

	cp.writeDiv = ColorPicker_writeDiv;

	cp.highlightColor = ColorPicker_highlightColor;

	cp.show = ColorPicker_show;

	cp.select = ColorPicker_select;



	// Code to populate color picker window

	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");

	var total = colors.length;

	var width = 18;

	var cp_contents = "";

	var windowRef = (windowMode)?"window.opener.":"";

	if (windowMode) {

		cp_contents += "<html><head><title>Select Color</title><style> body{ font-family:\"Trebuchet MS\", Arial, Helvetica, sans-serif};} </style></head>";

		cp_contents += "<body marginwidth=\"0\" marginheight=\"0\" leftmargin=\"0\" topmargin=\"0\"><center>";

		}

	cp_contents += "<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">";

	var use_highlight = (document.getElementById || document.all)?true:false;

	for (var i=0; i<total; i++) {

		if ((i % width) == 0) { cp_contents += "<tr>"; }

		if (use_highlight) { var mo = 'onMouseOver="'+windowRef+'ColorPicker_highlightColor(\''+colors[i]+'\',window.document)"'; }

		else { mo = ""; }

		cp_contents += '<td bgcolor="'+colors[i]+'"><font size="-3"><a href="#" onClick="'+windowRef+'ColorPicker_pickColor(\''+colors[i]+'\','+windowRef+'window.popupWindowObjects['+cp.index+']);return false;" '+mo+' style="text-decoration:none;">&nbsp;&nbsp;&nbsp;</a></font></td>';

		if ( ((i+1)>=total) || (((i+1) % width) == 0)) { 

			cp_contents += "</tr>";

			}

		}

	// If the browser supports dynamically changing TD cells, add the fancy stuff

	if (document.getElementById) {

		var width1 = Math.floor(width/2);

		var width2 = width = width1;

		cp_contents += "<tr><td colspan='"+width1+"' bgcolor='#ffffff' id='colorPickerSelectedColor'>&nbsp;</td><td colspan='"+width2+ "' align='center' id='colorPickerSelectedColorValue'><font face=Trebuchet MS, Arial, Helvetica, sans-serif>#FFFFFF</font></td></tr>";

		}

	cp_contents += "</table>";

	if (windowMode) {

		cp_contents += "</center></body></html>";

		}

	// end populate code



	// Write the contents to the popup object

	cp.populate(cp_contents+"\n");

	// Move the table down a bit so you can see it

	cp.offsetY = 25;

	cp.autoHide();

	return cp;

	}